include(CheckHeader)
include(CheckCompiles)
include(CheckType)
-include(CheckAtomics)
include(TestBigEndian)
include(CheckByteswap)
## debug
check_debug()
-## memaslap
-if(ENABLE_MEMASLAP)
- check_atomics()
- check_dependency(LIBEVENT event event.h)
- check_decl(getline stdio.h)
- if(HAVE_LIBEVENT AND HAVE_C_STDATOMIC)
- set(HAVE_MEMASLAP 1)
- endif()
-endif()
-
## dtrace
include(EnableDtrace)
if(ENABLE_DTRACE)
)
add_subdirectory(src)
+ add_subdirectory(contrib)
add_subdirectory(include)
add_subdirectory(support)
add_subdirectory(test)
--- /dev/null
+add_subdirectory(bin)
--- /dev/null
+add_subdirectory(memaslap)
--- /dev/null
+if(ENABLE_MEMASLAP)
+ include(CheckAtomics)
+ check_atomics()
+ check_dependency(LIBEVENT event event.h)
+ check_decl(getline stdio.h)
+
+ if(HAVE_LIBEVENT AND HAVE_ATOMICS)
+ add_executable(memaslap
+ ms_main.c
+ ms_conn.c
+ ms_setting.c
+ ms_sigsegv.c
+ ms_stats.c
+ ms_task.c
+ ms_thread.c)
+ target_include_directories(memaslap PRIVATE
+ ${CMAKE_SOURCE_DIR}/include
+ ${CMAKE_BINARY_DIR}/include
+ ${CMAKE_SOURCE_DIR}/src
+ ${CMAKE_BINARY_DIR}/src
+ ${CMAKE_BINARY_DIR})
+ target_link_libraries(memaslap PUBLIC libmemcached Threads::Threads ${LIBEVENT} m)
+ set_property(TARGET memaslap PROPERTY C_STANDARD 11)
+ if(CMAKE_INSTALL_RPATH)
+ set_target_properties(${CLIENT} PROPERTIES
+ INSTALL_RPATH ${CMAKE_INSTALL_RPATH}/../${CMAKE_INSTALL_LIBDIR})
+ endif()
+ install(TARGETS memaslap
+ RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+ endif()
+
+endif()
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef CLIENTS_MS_ATOMIC_H
+#define CLIENTS_MS_ATOMIC_H
+
+#include "mem_config.h"
+
+#if defined(__SUNPRO_C) || defined(HAVE_ATOMIC_ADD_NV)
+# define ATOMIC volatile
+# define _KERNEL
+# include <atomic.h>
+# if SIZEOF_SIZE_T == 8
+# define atomic_add_size(X, Y) atomic_add_64((X), (Y))
+# else
+# define atomic_add_size(X, Y) atomic_add_32((X), (Y))
+# endif
+# undef _KERNEL
+
+#elif HAVE_C_STDATOMIC
+# define ATOMIC _Atomic
+# include <stdatomic.h>
+# define atomic_dec_32(X) atomic_fetch_sub(X,1)
+# define atomic_add_32 atomic_fetch_add
+# define atomic_add_32_nv(X,Y) (atomic_fetch_add(X,Y)+(Y))
+# define atomic_add_size atomic_fetch_add
+
+#elif HAVE_BUILTIN_ATOMIC
+# define ATOMIC
+# define atomic_dec_32(X) BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_sub(X,1)
+# define atomic_add_32 BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_add
+# define atomic_add_32_nv BUILTIN_ATOMIC_PREFIX ## _atomic_add_fetch(X,Y)
+# define atomic_add_size BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_add
+
+#elif HAVE_BUILTIN_SYNC
+# define ATOMIC
+# define atomic_dec_32(X) __sync_fetch_and_sub((X), 1)
+# define atomic_add_32 __sync_fetch_and_add
+# define atomic_add_32_nv __sync_add_and_fetch
+# define atomic_add_size __sync_fetch_and_add
+
+#else
+# warning "Atomic operators not found so memslap will not work correctly"
+# define ATOMIC
+# define atomic_dec_32(X) (--(*(X)))
+# define atomic_add_32(X,Y) ((*(X))+=(Y))
+# define atomic_add_32_nv atomic_add_32
+# define atomic_add_size atomic_add_32
+
+#endif
+
+#endif /* CLIENTS_MS_ATOMIC_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <sys/uio.h>
+#include <event.h>
+#include <fcntl.h>
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+
+#if defined(HAVE_ARPA_INET_H)
+# include <arpa/inet.h>
+#endif
+
+#if defined(HAVE_SYS_TIME_H)
+# include <sys/time.h>
+#endif
+
+#if defined(HAVE_TIME_H)
+# include <time.h>
+#endif
+
+#include "ms_setting.h"
+#include "ms_thread.h"
+#include "ms_atomic.h"
+
+#ifdef linux
+/* /usr/include/netinet/in.h defines macros from ntohs() to _bswap_nn to
+ * optimize the conversion functions, but the prototypes generate warnings
+ * from gcc. The conversion methods isn't the bottleneck for my app, so
+ * just remove the warnings by undef'ing the optimization ..
+ */
+# undef ntohs
+# undef ntohl
+# undef htons
+# undef htonl
+#endif
+
+/* for network write */
+#define TRANSMIT_COMPLETE 0
+#define TRANSMIT_INCOMPLETE 1
+#define TRANSMIT_SOFT_ERROR 2
+#define TRANSMIT_HARD_ERROR 3
+
+/* for generating key */
+#define KEY_PREFIX_BASE 0x1010101010101010 /* not include ' ' '\r' '\n' '\0' */
+#define KEY_PREFIX_MASK 0x1010101010101010
+
+/* For parse the value length return by server */
+#define KEY_TOKEN 1
+#define VALUELEN_TOKEN 3
+
+/* global increasing counter, to ensure the key prefix unique */
+static uint64_t key_prefix_seq = KEY_PREFIX_BASE;
+
+/* global increasing counter, generating request id for UDP */
+static ATOMIC uint32_t udp_request_id = 0;
+
+extern pthread_key_t ms_thread_key;
+
+/* generate upd request id */
+static uint32_t ms_get_udp_request_id(void);
+
+/* connect initialize */
+static void ms_task_init(ms_conn_t *c);
+static int ms_conn_udp_init(ms_conn_t *c, const bool is_udp);
+static int ms_conn_sock_init(ms_conn_t *c);
+static int ms_conn_event_init(ms_conn_t *c);
+static int ms_conn_init(ms_conn_t *c, const int init_state, const int read_buffer_size,
+ const bool is_udp);
+static void ms_warmup_num_init(ms_conn_t *c);
+static int ms_item_win_init(ms_conn_t *c);
+
+/* connection close */
+void ms_conn_free(ms_conn_t *c);
+static void ms_conn_close(ms_conn_t *c);
+
+/* create network connection */
+static int ms_new_socket(struct addrinfo *ai);
+static void ms_maximize_sndbuf(const int sfd);
+static int ms_network_connect(ms_conn_t *c, char *srv_host_name, const int srv_port,
+ const bool is_udp, int *ret_sfd);
+static int ms_reconn(ms_conn_t *c);
+
+/* read and parse */
+static int ms_tokenize_command(char *command, token_t *tokens, const int max_tokens);
+static int ms_ascii_process_line(ms_conn_t *c, char *command);
+static int ms_try_read_line(ms_conn_t *c);
+static int ms_sort_udp_packet(ms_conn_t *c, char *buf, int rbytes);
+static int ms_udp_read(ms_conn_t *c, char *buf, int len);
+static int ms_try_read_network(ms_conn_t *c);
+static void ms_verify_value(ms_conn_t *c, ms_mlget_task_item_t *mlget_item, char *value, int vlen);
+static void ms_ascii_complete_nread(ms_conn_t *c);
+static void ms_bin_complete_nread(ms_conn_t *c);
+static void ms_complete_nread(ms_conn_t *c);
+
+/* send functions */
+static int ms_add_msghdr(ms_conn_t *c);
+static int ms_ensure_iov_space(ms_conn_t *c);
+static int ms_add_iov(ms_conn_t *c, const void *buf, int len);
+static int ms_build_udp_headers(ms_conn_t *c);
+static int ms_transmit(ms_conn_t *c);
+
+/* status adjustment */
+static void ms_conn_shrink(ms_conn_t *c);
+static void ms_conn_set_state(ms_conn_t *c, int state);
+static bool ms_update_event(ms_conn_t *c, const int new_flags);
+static uint32_t ms_get_rep_sock_index(ms_conn_t *c, int cmd);
+static uint32_t ms_get_next_sock_index(ms_conn_t *c);
+static int ms_update_conn_sock_event(ms_conn_t *c);
+static bool ms_need_yield(ms_conn_t *c);
+static void ms_update_start_time(ms_conn_t *c);
+
+/* main loop */
+static void ms_drive_machine(ms_conn_t *c);
+void ms_event_handler(const int fd, const short which, void *arg);
+
+/* ascii protocol */
+static int ms_build_ascii_write_buf_set(ms_conn_t *c, ms_task_item_t *item);
+static int ms_build_ascii_write_buf_get(ms_conn_t *c, ms_task_item_t *item);
+static int ms_build_ascii_write_buf_mlget(ms_conn_t *c);
+
+/* binary protocol */
+static int ms_bin_process_response(ms_conn_t *c);
+static void ms_add_bin_header(ms_conn_t *c, uint8_t opcode, uint8_t hdr_len, uint16_t key_len,
+ uint32_t body_len);
+static void ms_add_key_to_iov(ms_conn_t *c, ms_task_item_t *item);
+static int ms_build_bin_write_buf_set(ms_conn_t *c, ms_task_item_t *item);
+static int ms_build_bin_write_buf_get(ms_conn_t *c, ms_task_item_t *item);
+static int ms_build_bin_write_buf_mlget(ms_conn_t *c);
+
+/**
+ * each key has two parts, prefix and suffix. The suffix is a
+ * string random get form the character table. The prefix is a
+ * uint64_t variable. And the prefix must be unique. we use the
+ * prefix to identify a key. And the prefix can't include
+ * character ' ' '\r' '\n' '\0'.
+ *
+ * @return uint64_t
+ */
+uint64_t ms_get_key_prefix(void) {
+ uint64_t key_prefix;
+
+ pthread_mutex_lock(&ms_global.seq_mutex);
+ key_prefix_seq |= KEY_PREFIX_MASK;
+ key_prefix = key_prefix_seq;
+ key_prefix_seq++;
+ pthread_mutex_unlock(&ms_global.seq_mutex);
+
+ return key_prefix;
+} /* ms_get_key_prefix */
+
+/**
+ * get an unique udp request id
+ *
+ * @return an unique UDP request id
+ */
+static uint32_t ms_get_udp_request_id(void) {
+ return atomic_add_32_nv(&udp_request_id, 1);
+}
+
+/**
+ * initialize current task structure
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_task_init(ms_conn_t *c) {
+ c->curr_task.cmd = CMD_NULL;
+ c->curr_task.item = 0;
+ c->curr_task.verify = false;
+ c->curr_task.finish_verify = true;
+ c->curr_task.get_miss = true;
+
+ c->curr_task.get_opt = 0;
+ c->curr_task.set_opt = 0;
+ c->curr_task.cycle_undo_get = 0;
+ c->curr_task.cycle_undo_set = 0;
+ c->curr_task.verified_get = 0;
+ c->curr_task.overwrite_set = 0;
+} /* ms_task_init */
+
+/**
+ * initialize udp for the connection structure
+ *
+ * @param c, pointer of the concurrency
+ * @param is_udp, whether it's udp
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_conn_udp_init(ms_conn_t *c, const bool is_udp) {
+ c->hdrbuf = 0;
+ c->rudpbuf = 0;
+ c->udppkt = 0;
+
+ c->rudpsize = UDP_DATA_BUFFER_SIZE;
+ c->hdrsize = 0;
+
+ c->rudpbytes = 0;
+ c->packets = 0;
+ c->recvpkt = 0;
+ c->pktcurr = 0;
+ c->ordcurr = 0;
+
+ c->udp = is_udp;
+
+ if (c->udp || (!c->udp && ms_setting.facebook_test)) {
+ c->rudpbuf = (char *) malloc((size_t) c->rudpsize);
+ c->udppkt = (ms_udppkt_t *) malloc(MAX_UDP_PACKET * sizeof(ms_udppkt_t));
+
+ if ((c->rudpbuf == NULL) || (c->udppkt == NULL)) {
+ if (c->rudpbuf)
+ free(c->rudpbuf);
+ if (c->udppkt)
+ free(c->udppkt);
+ fprintf(stderr, "malloc()\n");
+ return -1;
+ }
+ memset(c->udppkt, 0, MAX_UDP_PACKET * sizeof(ms_udppkt_t));
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_conn_udp_init */
+
+/**
+ * initialize the connection structure
+ *
+ * @param c, pointer of the concurrency
+ * @param init_state, (conn_read, conn_write, conn_closing)
+ * @param read_buffer_size
+ * @param is_udp, whether it's udp
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_conn_init(ms_conn_t *c, const int init_state, const int read_buffer_size,
+ const bool is_udp) {
+ assert(c);
+
+ c->rbuf = c->wbuf = 0;
+ c->iov = 0;
+ c->msglist = 0;
+
+ c->rsize = read_buffer_size;
+ c->wsize = WRITE_BUFFER_SIZE;
+ c->iovsize = IOV_LIST_INITIAL;
+ c->msgsize = MSG_LIST_INITIAL;
+
+ /* for replication, each connection need connect all the server */
+ if (ms_setting.rep_write_srv > 0) {
+ c->total_sfds = ms_setting.srv_cnt * ms_setting.sock_per_conn;
+ } else {
+ c->total_sfds = ms_setting.sock_per_conn;
+ }
+ c->alive_sfds = 0;
+
+ c->rbuf = (char *) malloc((size_t) c->rsize);
+ c->wbuf = (char *) malloc((size_t) c->wsize);
+ c->iov = (struct iovec *) malloc(sizeof(struct iovec) * (size_t) c->iovsize);
+ c->msglist = (struct msghdr *) malloc(sizeof(struct msghdr) * (size_t) c->msgsize);
+ if (ms_setting.mult_key_num > 1) {
+ c->mlget_task.mlget_item = (ms_mlget_task_item_t *) malloc(sizeof(ms_mlget_task_item_t)
+ * (size_t) ms_setting.mult_key_num);
+ }
+ c->tcpsfd = (int *) malloc((size_t) c->total_sfds * sizeof(int));
+
+ if ((c->rbuf == NULL) || (c->wbuf == NULL) || (c->iov == NULL) || (c->msglist == NULL)
+ || (c->tcpsfd == NULL)
+ || ((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_item == NULL)))
+ {
+ if (c->rbuf)
+ free(c->rbuf);
+ if (c->wbuf)
+ free(c->wbuf);
+ if (c->iov)
+ free(c->iov);
+ if (c->msglist)
+ free(c->msglist);
+ if (c->mlget_task.mlget_item)
+ free(c->mlget_task.mlget_item);
+ if (c->tcpsfd)
+ free(c->tcpsfd);
+ fprintf(stderr, "malloc()\n");
+ return -1;
+ }
+
+ c->state = init_state;
+ c->rvbytes = 0;
+ c->rbytes = 0;
+ c->rcurr = c->rbuf;
+ c->wcurr = c->wbuf;
+ c->iovused = 0;
+ c->msgcurr = 0;
+ c->msgused = 0;
+ c->cur_idx = c->total_sfds; /* default index is a invalid value */
+
+ c->ctnwrite = false;
+ c->readval = false;
+ c->change_sfd = false;
+
+ c->precmd.cmd = c->currcmd.cmd = CMD_NULL;
+ c->precmd.isfinish = true; /* default the previous command finished */
+ c->currcmd.isfinish = false;
+ c->precmd.retstat = c->currcmd.retstat = MCD_FAILURE;
+ c->precmd.key_prefix = c->currcmd.key_prefix = 0;
+
+ c->mlget_task.mlget_num = 0;
+ c->mlget_task.value_index = -1; /* default invalid value */
+
+ if (ms_setting.binary_prot_) {
+ c->protocol = binary_prot;
+ } else {
+ c->protocol = ascii_prot;
+ }
+
+ /* initialize udp */
+ if (ms_conn_udp_init(c, is_udp)) {
+ return -1;
+ }
+
+ /* initialize task */
+ ms_task_init(c);
+
+ if (!(ms_setting.facebook_test && is_udp)) {
+ atomic_add_32(&ms_stats.active_conns, 1);
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_conn_init */
+
+/**
+ * when doing 100% get operation, it could preset some objects
+ * to warmup the server. this function is used to initialize the
+ * number of the objects to preset.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_warmup_num_init(ms_conn_t *c) {
+ /* no set operation, preset all the items in the window */
+ if (ms_setting.cmd_distr[CMD_SET].cmd_prop < PROP_ERROR) {
+ c->warmup_num = c->win_size;
+ c->remain_warmup_num = c->warmup_num;
+ } else {
+ c->warmup_num = 0;
+ c->remain_warmup_num = c->warmup_num;
+ }
+} /* ms_warmup_num_init */
+
+/**
+ * each connection has an item window, this function initialize
+ * the window. The window is used to generate task.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_item_win_init(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ int exp_cnt = 0;
+
+ c->win_size = (int) ms_setting.win_size;
+ c->set_cursor = 0;
+ c->exec_num = ms_thread->thread_ctx->exec_num_perconn;
+ c->remain_exec_num = c->exec_num;
+
+ c->item_win = (ms_task_item_t *) malloc(sizeof(ms_task_item_t) * (size_t) c->win_size);
+ if (c->item_win == NULL) {
+ fprintf(stderr, "Can't allocate task item array for conn.\n");
+ return -1;
+ }
+ memset(c->item_win, 0, sizeof(ms_task_item_t) * (size_t) c->win_size);
+
+ for (int i = 0; i < c->win_size; i++) {
+ c->item_win[i].key_size = (int) ms_setting.distr[i].key_size;
+ c->item_win[i].key_prefix = ms_get_key_prefix();
+ c->item_win[i].key_suffix_offset = ms_setting.distr[i].key_offset;
+ c->item_win[i].value_size = (int) ms_setting.distr[i].value_size;
+ c->item_win[i].value_offset = INVALID_OFFSET; /* default in invalid offset */
+ c->item_win[i].client_time = 0;
+
+ /* set expire time base on the proportion */
+ if (exp_cnt < ms_setting.exp_ver_per * i) {
+ c->item_win[i].exp_time = FIXED_EXPIRE_TIME;
+ exp_cnt++;
+ } else {
+ c->item_win[i].exp_time = 0;
+ }
+ }
+
+ ms_warmup_num_init(c);
+
+ return EXIT_SUCCESS;
+} /* ms_item_win_init */
+
+/**
+ * each connection structure can include one or more sock
+ * handlers. this function create these socks and connect the
+ * server(s).
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_conn_sock_init(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ uint32_t i;
+ int ret_sfd;
+ uint32_t srv_idx = 0;
+
+ assert(c);
+ assert(c->tcpsfd);
+
+ for (i = 0; i < c->total_sfds; i++) {
+ ret_sfd = 0;
+ if (ms_setting.rep_write_srv > 0) {
+ /* for replication, each connection need connect all the server */
+ srv_idx = i % ms_setting.srv_cnt;
+ } else {
+ /* all the connections in a thread connects the same server */
+ srv_idx = ms_thread->thread_ctx->srv_idx;
+ }
+
+ if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
+ ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &ret_sfd)
+)
+ {
+ break;
+ }
+
+ if (i == 0) {
+ c->sfd = ret_sfd;
+ }
+
+ if (!ms_setting.udp) {
+ c->tcpsfd[i] = ret_sfd;
+ }
+
+ c->alive_sfds++;
+ }
+
+ /* initialize udp sock handler if necessary */
+ if (ms_setting.facebook_test) {
+ ret_sfd = 0;
+ if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
+ ms_setting.servers[srv_idx].srv_port, true, &ret_sfd)
+)
+ {
+ c->udpsfd = 0;
+ } else {
+ c->udpsfd = ret_sfd;
+ }
+ }
+
+ if ((i != c->total_sfds) || (ms_setting.facebook_test && (c->udpsfd == 0))) {
+ if (ms_setting.udp) {
+ close(c->sfd);
+ } else {
+ for (uint32_t j = 0; j < i; j++) {
+ close(c->tcpsfd[j]);
+ }
+ }
+
+ if (c->udpsfd) {
+ close(c->udpsfd);
+ }
+
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_conn_sock_init */
+
+/**
+ * each connection is managed by libevent, this function
+ * initialize the event of the connection structure.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_conn_event_init(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ short event_flags = EV_WRITE | EV_PERSIST;
+
+ event_set(&c->event, c->sfd, event_flags, ms_event_handler, (void *) c);
+ event_base_set(ms_thread->base, &c->event);
+ c->ev_flags = event_flags;
+
+ if (event_add(&c->event, NULL) == -1) {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_conn_event_init */
+
+/**
+ * setup a connection, each connection structure of each
+ * thread must call this function to initialize.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_setup_conn(ms_conn_t *c) {
+ if (ms_item_win_init(c)) {
+ return -1;
+ }
+
+ if (ms_conn_init(c, conn_write, DATA_BUFFER_SIZE, ms_setting.udp)) {
+ return -1;
+ }
+
+ if (ms_conn_sock_init(c)) {
+ return -1;
+ }
+
+ if (ms_conn_event_init(c)) {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_setup_conn */
+
+/**
+ * Frees a connection.
+ *
+ * @param c, pointer of the concurrency
+ */
+void ms_conn_free(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ if (c) {
+ if (c->hdrbuf)
+ free(c->hdrbuf);
+ if (c->msglist)
+ free(c->msglist);
+ if (c->rbuf)
+ free(c->rbuf);
+ if (c->wbuf)
+ free(c->wbuf);
+ if (c->iov)
+ free(c->iov);
+ if (c->mlget_task.mlget_item)
+ free(c->mlget_task.mlget_item);
+ if (c->rudpbuf)
+ free(c->rudpbuf);
+ if (c->udppkt)
+ free(c->udppkt);
+ if (c->item_win)
+ free(c->item_win);
+ if (c->tcpsfd)
+ free(c->tcpsfd);
+
+ if (--ms_thread->nactive_conn == 0) {
+ free(ms_thread->conn);
+ }
+ }
+} /* ms_conn_free */
+
+/**
+ * close a connection
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_conn_close(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ assert(c);
+
+ /* delete the event, the socket and the connection */
+ event_del(&c->event);
+
+ for (uint32_t i = 0; i < c->total_sfds; i++) {
+ if (c->tcpsfd[i] > 0) {
+ close(c->tcpsfd[i]);
+ }
+ }
+ c->sfd = 0;
+
+ if (ms_setting.facebook_test) {
+ close(c->udpsfd);
+ }
+
+ atomic_dec_32(&ms_stats.active_conns);
+
+ ms_conn_free(c);
+
+ if (ms_setting.run_time == 0) {
+ pthread_mutex_lock(&ms_global.run_lock.lock);
+ ms_global.run_lock.count++;
+ pthread_cond_signal(&ms_global.run_lock.cond);
+ pthread_mutex_unlock(&ms_global.run_lock.lock);
+ }
+
+ if (ms_thread->nactive_conn == 0) {
+ event_base_loopbreak(ms_thread->base);
+ }
+} /* ms_conn_close */
+
+/**
+ * create a new sock
+ *
+ * @param ai, server address information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_new_socket(struct addrinfo *ai) {
+ int sfd;
+
+ if ((sfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol)) == -1) {
+ fprintf(stderr, "socket() error: %s.\n", strerror(errno));
+ return -1;
+ }
+
+ return sfd;
+} /* ms_new_socket */
+
+/**
+ * Sets a socket's send buffer size to the maximum allowed by the system.
+ *
+ * @param sfd, file descriptor of socket
+ */
+static void ms_maximize_sndbuf(const int sfd) {
+ socklen_t intsize = sizeof(int);
+ unsigned int last_good = 0;
+ unsigned int min, max, avg;
+ unsigned int old_size;
+
+ /* Start with the default size. */
+ if (getsockopt(sfd, SOL_SOCKET, SO_SNDBUF, &old_size, &intsize)) {
+ fprintf(stderr, "getsockopt(SO_SNDBUF)\n");
+ return;
+ }
+
+ /* Binary-search for the real maximum. */
+ min = old_size;
+ max = MAX_SENDBUF_SIZE;
+
+ while (min <= max) {
+ avg = ((unsigned int) (min + max)) / 2;
+ if (setsockopt(sfd, SOL_SOCKET, SO_SNDBUF, (void *) &avg, intsize) == 0) {
+ last_good = avg;
+ min = avg + 1;
+ } else {
+ max = avg - 1;
+ }
+ }
+ (void) last_good;
+} /* ms_maximize_sndbuf */
+
+/**
+ * socket connects the server
+ *
+ * @param c, pointer of the concurrency
+ * @param srv_host_name, the host name of the server
+ * @param srv_port, port of server
+ * @param is_udp, whether it's udp
+ * @param ret_sfd, the connected socket file descriptor
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_network_connect(ms_conn_t *c, char *srv_host_name, const int srv_port,
+ const bool is_udp, int *ret_sfd) {
+ int sfd;
+ struct linger ling = {0, 0};
+ struct addrinfo *ai;
+ struct addrinfo *next;
+ struct addrinfo hints;
+ char port_buf[NI_MAXSERV];
+ int error;
+ int success = 0;
+
+ int flags = 1;
+
+ /*
+ * the memset call clears nonstandard fields in some impementations
+ * that otherwise mess things up.
+ */
+ memset(&hints, 0, sizeof(hints));
+#ifdef AI_ADDRCONFIG
+ hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
+#else
+ hints.ai_flags = AI_PASSIVE;
+#endif /* AI_ADDRCONFIG */
+ if (is_udp) {
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_family = AF_INET; /* This left here because of issues with OSX 10.5 */
+ } else {
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_protocol = IPPROTO_TCP;
+ hints.ai_socktype = SOCK_STREAM;
+ }
+
+ snprintf(port_buf, NI_MAXSERV, "%d", srv_port);
+ error = getaddrinfo(srv_host_name, port_buf, &hints, &ai);
+ if (error) {
+ if (error != EAI_SYSTEM)
+ fprintf(stderr, "getaddrinfo(): %s.\n", gai_strerror(error));
+ else
+ perror("getaddrinfo()");
+
+ return -1;
+ }
+
+ for (next = ai; next; next = next->ai_next) {
+ if ((sfd = ms_new_socket(next)) == -1) {
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, (void *) &flags, sizeof(flags));
+ if (is_udp) {
+ ms_maximize_sndbuf(sfd);
+ } else {
+ setsockopt(sfd, SOL_SOCKET, SO_KEEPALIVE, (void *) &flags, sizeof(flags));
+ setsockopt(sfd, SOL_SOCKET, SO_LINGER, (void *) &ling, sizeof(ling));
+ setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, (void *) &flags, sizeof(flags));
+ }
+
+ if (is_udp) {
+ c->srv_recv_addr_size = sizeof(struct sockaddr);
+ memcpy(&c->srv_recv_addr, next->ai_addr, c->srv_recv_addr_size);
+ } else {
+ if (connect(sfd, next->ai_addr, next->ai_addrlen) == -1) {
+ close(sfd);
+ freeaddrinfo(ai);
+ return -1;
+ }
+ }
+
+ if (((flags = fcntl(sfd, F_GETFL, 0)) < 0) || (fcntl(sfd, F_SETFL, flags | O_NONBLOCK) < 0)) {
+ fprintf(stderr, "setting O_NONBLOCK\n");
+ close(sfd);
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ if (ret_sfd) {
+ *ret_sfd = sfd;
+ }
+
+ success++;
+ }
+
+ freeaddrinfo(ai);
+
+ /* Return zero if we detected no errors in starting up connections */
+ return success == 0;
+} /* ms_network_connect */
+
+/**
+ * reconnect a disconnected sock
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_reconn(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ uint32_t srv_idx = 0;
+ uint32_t srv_conn_cnt = 0;
+
+ if (ms_setting.rep_write_srv > 0) {
+ srv_idx = c->cur_idx % ms_setting.srv_cnt;
+ srv_conn_cnt = ms_setting.sock_per_conn * ms_setting.nconns;
+ } else {
+ srv_idx = ms_thread->thread_ctx->srv_idx;
+ srv_conn_cnt = ms_setting.nconns / ms_setting.srv_cnt;
+ }
+
+ /* close the old socket handler */
+ close(c->sfd);
+ c->tcpsfd[c->cur_idx] = 0;
+
+ if (atomic_add_32_nv(&ms_setting.servers[srv_idx].disconn_cnt, 1) % srv_conn_cnt == 0) {
+ gettimeofday(&ms_setting.servers[srv_idx].disconn_time, NULL);
+ fprintf(stderr, "Server %s:%d disconnect\n", ms_setting.servers[srv_idx].srv_host_name,
+ ms_setting.servers[srv_idx].srv_port);
+ }
+
+ if (ms_setting.rep_write_srv > 0) {
+ uint32_t i = 0;
+
+ for (i = 0; i < c->total_sfds; i++) {
+ if (c->tcpsfd[i]) {
+ break;
+ }
+ }
+
+ /* all socks disconnect */
+ if (i == c->total_sfds) {
+ return -1;
+ }
+ } else {
+ do {
+ /* reconnect success, break the loop */
+ if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
+ ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &c->sfd)
+ == 0)
+ {
+ c->tcpsfd[c->cur_idx] = c->sfd;
+ if (atomic_add_32_nv(&ms_setting.servers[srv_idx].reconn_cnt, 1) % (uint32_t) srv_conn_cnt
+ == 0) {
+ gettimeofday(&ms_setting.servers[srv_idx].reconn_time, NULL);
+ int reconn_time = (int) (ms_setting.servers[srv_idx].reconn_time.tv_sec
+ - ms_setting.servers[srv_idx].disconn_time.tv_sec);
+ fprintf(stderr, "Server %s:%d reconnect after %ds\n",
+ ms_setting.servers[srv_idx].srv_host_name, ms_setting.servers[srv_idx].srv_port,
+ reconn_time);
+ }
+ break;
+ }
+
+ if (ms_setting.rep_write_srv == 0 && c->total_sfds > 0) {
+ /* wait a second and reconnect */
+ sleep(1);
+ }
+ } while (ms_setting.rep_write_srv == 0 && c->total_sfds > 0);
+ }
+
+ if ((c->total_sfds > 1) && (c->tcpsfd[c->cur_idx] == 0)) {
+ c->sfd = 0;
+ c->alive_sfds--;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_reconn */
+
+/**
+ * reconnect several disconnected socks in the connection
+ * structure, the ever-1-second timer of the thread will check
+ * whether some socks in the connections disconnect. if
+ * disconnect, reconnect the sock.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_reconn_socks(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ uint32_t srv_idx = 0;
+ int ret_sfd = 0;
+ uint32_t srv_conn_cnt = 0;
+ struct timeval cur_time;
+
+ assert(c);
+
+ if ((c->total_sfds == 1) || (c->total_sfds == c->alive_sfds)) {
+ return EXIT_SUCCESS;
+ }
+
+ for (uint32_t i = 0; i < c->total_sfds; i++) {
+ if (c->tcpsfd[i] == 0) {
+ gettimeofday(&cur_time, NULL);
+
+ /**
+ * For failover test of replication, reconnect the socks after
+ * it disconnects more than 5 seconds, Otherwise memslap will
+ * block at connect() function and the work threads can't work
+ * in this interval.
+ */
+ if (cur_time.tv_sec - ms_setting.servers[srv_idx].disconn_time.tv_sec < 5) {
+ break;
+ }
+
+ if (ms_setting.rep_write_srv > 0) {
+ srv_idx = i % ms_setting.srv_cnt;
+ srv_conn_cnt = ms_setting.sock_per_conn * ms_setting.nconns;
+ } else {
+ srv_idx = ms_thread->thread_ctx->srv_idx;
+ srv_conn_cnt = ms_setting.nconns / ms_setting.srv_cnt;
+ }
+
+ if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
+ ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &ret_sfd)
+ == 0)
+ {
+ c->tcpsfd[i] = ret_sfd;
+ c->alive_sfds++;
+
+ if (atomic_add_32_nv(&ms_setting.servers[srv_idx].reconn_cnt, 1) % (uint32_t) srv_conn_cnt
+ == 0) {
+ gettimeofday(&ms_setting.servers[srv_idx].reconn_time, NULL);
+ int reconn_time = (int) (ms_setting.servers[srv_idx].reconn_time.tv_sec
+ - ms_setting.servers[srv_idx].disconn_time.tv_sec);
+ fprintf(stderr, "Server %s:%d reconnect after %ds\n",
+ ms_setting.servers[srv_idx].srv_host_name, ms_setting.servers[srv_idx].srv_port,
+ reconn_time);
+ }
+ }
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_reconn_socks */
+
+/**
+ * Tokenize the command string by replacing whitespace with '\0' and update
+ * the token array tokens with pointer to start of each token and length.
+ * Returns total number of tokens. The last valid token is the terminal
+ * token (value points to the first unprocessed character of the string and
+ * length zero).
+ *
+ * Usage example:
+ *
+ * while(ms_tokenize_command(command, ncommand, tokens, max_tokens) > 0) {
+ * for(int ix = 0; tokens[ix].length; ix++) {
+ * ...
+ * }
+ * ncommand = tokens[ix].value - command;
+ * command = tokens[ix].value;
+ * }
+ *
+ * @param command, the command string to token
+ * @param tokens, array to store tokens
+ * @param max_tokens, maximum tokens number
+ *
+ * @return int, the number of tokens
+ */
+static int ms_tokenize_command(char *command, token_t *tokens, const int max_tokens) {
+ char *s, *e;
+ int ntokens = 0;
+
+ assert(command && tokens && max_tokens > 1);
+
+ for (s = e = command; ntokens < max_tokens - 1; ++e) {
+ if (*e == ' ') {
+ if (s != e) {
+ tokens[ntokens].value = s;
+ tokens[ntokens].length = (size_t)(e - s);
+ ntokens++;
+ *e = '\0';
+ }
+ s = e + 1;
+ } else if (*e == '\0') {
+ if (s != e) {
+ tokens[ntokens].value = s;
+ tokens[ntokens].length = (size_t)(e - s);
+ ntokens++;
+ }
+
+ break; /* string end */
+ }
+ }
+
+ return ntokens;
+} /* ms_tokenize_command */
+
+/**
+ * parse the response of server.
+ *
+ * @param c, pointer of the concurrency
+ * @param command, the string responded by server
+ *
+ * @return int, if the command completed return EXIT_SUCCESS, else return
+ * -1
+ */
+static int ms_ascii_process_line(ms_conn_t *c, char *command) {
+ int ret = 0;
+ int64_t value_len;
+ char *buffer = command;
+
+ assert(c);
+
+ /**
+ * for command get, we store the returned value into local buffer
+ * then continue in ms_complete_nread().
+ */
+
+ switch (buffer[0]) {
+ case 'V': /* VALUE || VERSION */
+ if (buffer[1] == 'A') /* VALUE */ {
+ token_t tokens[MAX_TOKENS];
+ ms_tokenize_command(command, tokens, MAX_TOKENS);
+ errno = 0;
+ value_len = strtol(tokens[VALUELEN_TOKEN].value, NULL, 10);
+ if (errno) {
+ printf("<%d ERROR %s\n", c->sfd, strerror(errno));
+ }
+ memcpy(&c->currcmd.key_prefix, tokens[KEY_TOKEN].value, sizeof(c->currcmd.key_prefix));
+
+ /*
+ * We read the \r\n into the string since not doing so is more
+ * cycles then the waster of memory to do so.
+ *
+ * We are null terminating through, which will most likely make
+ * some people lazy about using the return length.
+ */
+ c->rvbytes = (int) (value_len + 2);
+ c->readval = true;
+ ret = -1;
+ }
+
+ break;
+
+ case 'O': /* OK */
+ c->currcmd.retstat = MCD_SUCCESS;
+ break;
+
+ case 'S': /* STORED STATS SERVER_ERROR */
+ if (buffer[2] == 'A') /* STORED STATS */ { /* STATS*/
+ c->currcmd.retstat = MCD_STAT;
+ } else if (buffer[1] == 'E') {
+ /* SERVER_ERROR */
+ printf("<%d %s\n", c->sfd, buffer);
+
+ c->currcmd.retstat = MCD_SERVER_ERROR;
+ } else if (buffer[1] == 'T') {
+ /* STORED */
+ c->currcmd.retstat = MCD_STORED;
+ } else {
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ }
+ break;
+
+ case 'D': /* DELETED DATA */
+ if (buffer[1] == 'E') {
+ c->currcmd.retstat = MCD_DELETED;
+ } else {
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ }
+
+ break;
+
+ case 'N': /* NOT_FOUND NOT_STORED*/
+ if (buffer[4] == 'F') {
+ c->currcmd.retstat = MCD_NOTFOUND;
+ } else if (buffer[4] == 'S') {
+ printf("<%d %s\n", c->sfd, buffer);
+ c->currcmd.retstat = MCD_NOTSTORED;
+ } else {
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ }
+ break;
+
+ case 'E': /* PROTOCOL ERROR or END */
+ if (buffer[1] == 'N') {
+ /* END */
+ c->currcmd.retstat = MCD_END;
+ } else if (buffer[1] == 'R') {
+ printf("<%d ERROR\n", c->sfd);
+ c->currcmd.retstat = MCD_PROTOCOL_ERROR;
+ } else if (buffer[1] == 'X') {
+ c->currcmd.retstat = MCD_DATA_EXISTS;
+ printf("<%d %s\n", c->sfd, buffer);
+ } else {
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ }
+ break;
+
+ case 'C': /* CLIENT ERROR */
+ printf("<%d %s\n", c->sfd, buffer);
+ c->currcmd.retstat = MCD_CLIENT_ERROR;
+ break;
+
+ default:
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ break;
+ } /* switch */
+
+ return ret;
+} /* ms_ascii_process_line */
+
+/**
+ * after one operation completes, reset the concurrency
+ *
+ * @param c, pointer of the concurrency
+ * @param timeout, whether it's timeout
+ */
+void ms_reset_conn(ms_conn_t *c, bool timeout) {
+ assert(c);
+
+ if (c->udp) {
+ if ((c->packets > 0) && (c->packets < MAX_UDP_PACKET)) {
+ memset(c->udppkt, 0, sizeof(ms_udppkt_t) * (size_t) c->packets);
+ }
+
+ c->packets = 0;
+ c->recvpkt = 0;
+ c->pktcurr = 0;
+ c->ordcurr = 0;
+ c->rudpbytes = 0;
+ }
+ c->currcmd.isfinish = true;
+ c->ctnwrite = false;
+ c->rbytes = 0;
+ c->rcurr = c->rbuf;
+ c->msgcurr = 0;
+ c->msgused = 0;
+ c->iovused = 0;
+ ms_conn_set_state(c, conn_write);
+ memcpy(&c->precmd, &c->currcmd, sizeof(ms_cmdstat_t)); /* replicate command state */
+
+ if (timeout) {
+ ms_drive_machine(c);
+ }
+} /* ms_reset_conn */
+
+/**
+ * if we have a complete line in the buffer, process it.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_try_read_line(ms_conn_t *c) {
+ if (c->protocol == binary_prot) {
+ /* Do we have the complete packet header? */
+ if ((uint64_t) c->rbytes < sizeof(c->binary_header)) {
+ /* need more data! */
+ return EXIT_SUCCESS;
+ } else {
+#ifdef NEED_ALIGN
+ if (((long) (c->rcurr)) % 8) {
+ /* must realign input buffer */
+ memmove(c->rbuf, c->rcurr, c->rbytes);
+ c->rcurr = c->rbuf;
+ if (settings.verbose) {
+ fprintf(stderr, "%d: Realign input buffer.\n", c->sfd);
+ }
+ }
+#endif
+ protocol_binary_response_header *rsp;
+ rsp = (protocol_binary_response_header *) c->rcurr;
+
+ c->binary_header = *rsp;
+ c->binary_header.response.extlen = rsp->response.extlen;
+ c->binary_header.response.keylen = ntohs(rsp->response.keylen);
+ c->binary_header.response.bodylen = ntohl(rsp->response.bodylen);
+ c->binary_header.response.status = ntohs(rsp->response.status);
+
+ if (c->binary_header.response.magic != PROTOCOL_BINARY_RES) {
+ fprintf(stderr, "Invalid magic: %x\n", c->binary_header.response.magic);
+ ms_conn_set_state(c, conn_closing);
+ return EXIT_SUCCESS;
+ }
+
+ /* process this complete response */
+ if (ms_bin_process_response(c) == 0) {
+ /* current operation completed */
+ ms_reset_conn(c, false);
+ return -1;
+ } else {
+ c->rbytes -= (int32_t) sizeof(c->binary_header);
+ c->rcurr += sizeof(c->binary_header);
+ }
+ }
+ } else {
+ char *el, *cont;
+
+ assert(c);
+ assert(c->rcurr <= (c->rbuf + c->rsize));
+
+ if (c->rbytes == 0)
+ return EXIT_SUCCESS;
+
+ el = memchr(c->rcurr, '\n', (size_t) c->rbytes);
+ if (!el)
+ return EXIT_SUCCESS;
+
+ cont = el + 1;
+ if (((el - c->rcurr) > 1) && (*(el - 1) == '\r')) {
+ el--;
+ }
+ *el = '\0';
+
+ assert(cont <= (c->rcurr + c->rbytes));
+
+ /* process this complete line */
+ if (ms_ascii_process_line(c, c->rcurr) == 0) {
+ /* current operation completed */
+ ms_reset_conn(c, false);
+ return -1;
+ } else {
+ /* current operation didn't complete */
+ c->rbytes -= (int32_t)(cont - c->rcurr);
+ c->rcurr = cont;
+ }
+
+ assert(c->rcurr <= (c->rbuf + c->rsize));
+ }
+
+ return -1;
+} /* ms_try_read_line */
+
+/**
+ * because the packet of UDP can't ensure the order, the
+ * function is used to sort the received udp packet.
+ *
+ * @param c, pointer of the concurrency
+ * @param buf, the buffer to store the ordered packages data
+ * @param rbytes, the maximum capacity of the buffer
+ *
+ * @return int, if success, return the copy bytes, else return
+ * -1
+ */
+static int ms_sort_udp_packet(ms_conn_t *c, char *buf, int rbytes) {
+ int len = 0;
+ int wbytes = 0;
+ uint16_t req_id = 0;
+ uint16_t seq_num = 0;
+ uint16_t packets = 0;
+ unsigned char *header = NULL;
+
+ /* no enough data */
+ assert(c);
+ assert(buf);
+ assert(c->rudpbytes >= UDP_HEADER_SIZE);
+
+ /* calculate received packets count */
+ if (c->rudpbytes % UDP_MAX_PAYLOAD_SIZE >= UDP_HEADER_SIZE) {
+ /* the last packet has some data */
+ c->recvpkt = c->rudpbytes / UDP_MAX_PAYLOAD_SIZE + 1;
+ } else {
+ c->recvpkt = c->rudpbytes / UDP_MAX_PAYLOAD_SIZE;
+ }
+
+ /* get the total packets count if necessary */
+ if (c->packets == 0) {
+ c->packets = HEADER_TO_PACKETS((unsigned char *) c->rudpbuf);
+ }
+
+ /* build the ordered packet array */
+ for (int i = c->pktcurr; i < c->recvpkt; i++) {
+ header = (unsigned char *) c->rudpbuf + i * UDP_MAX_PAYLOAD_SIZE;
+ req_id = (uint16_t) HEADER_TO_REQID(header);
+ assert(req_id == c->request_id % (1 << 16));
+
+ packets = (uint16_t) HEADER_TO_PACKETS(header);
+ assert(c->packets == HEADER_TO_PACKETS(header));
+
+ seq_num = (uint16_t) HEADER_TO_SEQNUM(header);
+ c->udppkt[seq_num].header = header;
+ c->udppkt[seq_num].data = (char *) header + UDP_HEADER_SIZE;
+
+ if (i == c->recvpkt - 1) {
+ /* last received packet */
+ if (c->rudpbytes % UDP_MAX_PAYLOAD_SIZE == 0) {
+ c->udppkt[seq_num].rbytes = UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
+ c->pktcurr++;
+ } else {
+ c->udppkt[seq_num].rbytes = c->rudpbytes % UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
+ }
+ } else {
+ c->udppkt[seq_num].rbytes = UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
+ c->pktcurr++;
+ }
+ }
+
+ for (int i = c->ordcurr; i < c->recvpkt; i++) {
+ /* there is some data to copy */
+ if ((c->udppkt[i].data) && (c->udppkt[i].copybytes < c->udppkt[i].rbytes)) {
+ header = c->udppkt[i].header;
+ len = c->udppkt[i].rbytes - c->udppkt[i].copybytes;
+ if (len > rbytes - wbytes) {
+ len = rbytes - wbytes;
+ }
+
+ assert(len <= rbytes - wbytes);
+ assert(i == HEADER_TO_SEQNUM(header));
+
+ memcpy(buf + wbytes, c->udppkt[i].data + c->udppkt[i].copybytes, (size_t) len);
+ wbytes += len;
+ c->udppkt[i].copybytes += len;
+
+ if ((c->udppkt[i].copybytes == c->udppkt[i].rbytes)
+ && (c->udppkt[i].rbytes == UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE))
+ {
+ /* finish copying all the data of this packet, next */
+ c->ordcurr++;
+ }
+
+ /* last received packet, and finish copying all the data */
+ if ((c->recvpkt == c->packets) && (i == c->recvpkt - 1)
+ && (c->udppkt[i].copybytes == c->udppkt[i].rbytes))
+ {
+ break;
+ }
+
+ /* no space to copy data */
+ if (wbytes >= rbytes) {
+ break;
+ }
+
+ /* it doesn't finish reading all the data of the packet from network */
+ if ((i != c->recvpkt - 1) && (c->udppkt[i].rbytes < UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE)) {
+ break;
+ }
+ } else {
+ /* no data to copy */
+ break;
+ }
+ }
+ (void) packets;
+
+ return wbytes == 0 ? -1 : wbytes;
+} /* ms_sort_udp_packet */
+
+/**
+ * encapsulate upd read like tcp read
+ *
+ * @param c, pointer of the concurrency
+ * @param buf, read buffer
+ * @param len, length to read
+ *
+ * @return int, if success, return the read bytes, else return
+ * -1
+ */
+static int ms_udp_read(ms_conn_t *c, char *buf, int len) {
+ int res = 0;
+ int avail = 0;
+ int rbytes = 0;
+ int copybytes = 0;
+
+ assert(c->udp);
+
+ while (1) {
+ if (c->rudpbytes + UDP_MAX_PAYLOAD_SIZE > c->rudpsize) {
+ char *new_rbuf = realloc(c->rudpbuf, (size_t) c->rudpsize * 2);
+ if (!new_rbuf) {
+ fprintf(stderr, "Couldn't realloc input buffer.\n");
+ c->rudpbytes = 0; /* ignore what we read */
+ return -1;
+ }
+ c->rudpbuf = new_rbuf;
+ c->rudpsize *= 2;
+ }
+
+ avail = c->rudpsize - c->rudpbytes;
+ /* UDP each time read a packet, 1400 bytes */
+ res = (int) read(c->sfd, c->rudpbuf + c->rudpbytes, (size_t) avail);
+
+ if (res > 0) {
+ atomic_add_size(&ms_stats.bytes_read, res);
+ c->rudpbytes += res;
+ rbytes += res;
+ if (res == avail) {
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ if (res == 0) {
+ /* "connection" closed */
+ return res;
+ }
+
+ if (res == -1) {
+ /* no data to read */
+ return res;
+ }
+ }
+
+ /* copy data to read buffer */
+ if (rbytes > 0) {
+ copybytes = ms_sort_udp_packet(c, buf, len);
+ }
+
+ if (copybytes == -1) {
+ atomic_add_size(&ms_stats.pkt_disorder, 1);
+ }
+
+ return copybytes;
+} /* ms_udp_read */
+
+/*
+ * read from network as much as we can, handle buffer overflow and connection
+ * close.
+ * before reading, move the remaining incomplete fragment of a command
+ * (if any) to the beginning of the buffer.
+ * return EXIT_SUCCESS if there's nothing to read on the first read.
+ */
+
+/**
+ * read from network as much as we can, handle buffer overflow and connection
+ * close. before reading, move the remaining incomplete fragment of a command
+ * (if any) to the beginning of the buffer.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int,
+ * return EXIT_SUCCESS if there's nothing to read on the first read.
+ * return EXIT_FAILURE if get data
+ * return -1 if error happens
+ */
+static int ms_try_read_network(ms_conn_t *c) {
+ int gotdata = 0;
+ int res;
+ int64_t avail;
+
+ assert(c);
+
+ if ((c->rcurr != c->rbuf)
+ && (!c->readval || (c->rvbytes > c->rsize - (c->rcurr - c->rbuf))
+ || (c->readval && (c->rcurr - c->rbuf > c->rbytes))))
+ {
+ if (c->rbytes) /* otherwise there's nothing to copy */
+ memmove(c->rbuf, c->rcurr, (size_t) c->rbytes);
+ c->rcurr = c->rbuf;
+ }
+
+ while (1) {
+ if (c->rbytes >= c->rsize) {
+ char *new_rbuf = realloc(c->rbuf, (size_t) c->rsize * 2);
+ if (!new_rbuf) {
+ fprintf(stderr, "Couldn't realloc input buffer.\n");
+ c->rbytes = 0; /* ignore what we read */
+ return -1;
+ }
+ c->rcurr = c->rbuf = new_rbuf;
+ c->rsize *= 2;
+ }
+
+ avail = c->rsize - c->rbytes - (c->rcurr - c->rbuf);
+ if (avail == 0) {
+ break;
+ }
+
+ if (c->udp) {
+ res = (int32_t) ms_udp_read(c, c->rcurr + c->rbytes, (int32_t) avail);
+ } else {
+ res = (int) read(c->sfd, c->rcurr + c->rbytes, (size_t) avail);
+ }
+
+ if (res > 0) {
+ if (!c->udp) {
+ atomic_add_size(&ms_stats.bytes_read, res);
+ }
+ gotdata = 1;
+ c->rbytes += res;
+ if (res == avail) {
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (res == 0) {
+ /* connection closed */
+ ms_conn_set_state(c, conn_closing);
+ return -1;
+ }
+ if (res == -1) {
+ if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
+ break;
+ /* Should close on unhandled errors. */
+ ms_conn_set_state(c, conn_closing);
+ return -1;
+ }
+ }
+
+ return gotdata;
+} /* ms_try_read_network */
+
+/**
+ * after get the object from server, verify the value if
+ * necessary.
+ *
+ * @param c, pointer of the concurrency
+ * @param mlget_item, pointer of mulit-get task item structure
+ * @param value, received value string
+ * @param vlen, received value string length
+ */
+static void ms_verify_value(ms_conn_t *c, ms_mlget_task_item_t *mlget_item, char *value, int vlen) {
+ if (c->curr_task.verify) {
+ assert(c->curr_task.item->value_offset != INVALID_OFFSET);
+ char *orignval = &ms_setting.char_block[c->curr_task.item->value_offset];
+ char *orignkey = &ms_setting.char_block[c->curr_task.item->key_suffix_offset];
+
+ /* verify expire time if necessary */
+ if (c->curr_task.item->exp_time > 0) {
+ struct timeval curr_time;
+ gettimeofday(&curr_time, NULL);
+
+ /* object expired but get it now */
+ if (curr_time.tv_sec - c->curr_task.item->client_time
+ > c->curr_task.item->exp_time + EXPIRE_TIME_ERROR)
+ {
+ atomic_add_size(&ms_stats.exp_get, 1);
+
+ if (ms_setting.verbose) {
+ char set_time[64];
+ char cur_time[64];
+ strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&c->curr_task.item->client_time));
+ strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
+ fprintf(stderr,
+ "\n<%d expire time verification failed, "
+ "object expired but get it now\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\tset time: %s current time: %s "
+ "diff time: %d expire time: %d\n"
+ "\texpected data: \n"
+ "\treceived data len: %d\n"
+ "\treceived data: %.*s\n",
+ c->sfd, c->curr_task.item->key_size, c->curr_task.item->key_prefix,
+ c->curr_task.item->key_size - (int) KEY_PREFIX_SIZE, orignkey, set_time, cur_time,
+ (int) (curr_time.tv_sec - c->curr_task.item->client_time),
+ c->curr_task.item->exp_time, vlen, vlen, value);
+ fflush(stderr);
+ }
+ }
+ } else {
+ if ((c->curr_task.item->value_size != vlen) || (memcmp(orignval, value, (size_t) vlen)))
+ {
+ atomic_add_size(&ms_stats.vef_failed, 1);
+
+ if (ms_setting.verbose) {
+ fprintf(stderr,
+ "\n<%d data verification failed\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\texpected data len: %d\n"
+ "\texpected data: %.*s\n"
+ "\treceived data len: %d\n"
+ "\treceived data: %.*s\n",
+ c->sfd, c->curr_task.item->key_size, c->curr_task.item->key_prefix,
+ c->curr_task.item->key_size - (int) KEY_PREFIX_SIZE, orignkey,
+ c->curr_task.item->value_size, c->curr_task.item->value_size, orignval, vlen,
+ vlen, value);
+ fflush(stderr);
+ }
+ }
+ }
+
+ c->curr_task.finish_verify = true;
+
+ if (mlget_item) {
+ mlget_item->finish_verify = true;
+ }
+ }
+} /* ms_verify_value */
+
+/**
+ * For ASCII protocol, after store the data into the local
+ * buffer, run this function to handle the data.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_ascii_complete_nread(ms_conn_t *c) {
+ assert(c);
+ assert(c->rbytes >= c->rvbytes);
+ assert(c->protocol == ascii_prot);
+ if (c->rvbytes > 2) {
+ assert(c->rcurr[c->rvbytes - 1] == '\n' && c->rcurr[c->rvbytes - 2] == '\r');
+ }
+
+ /* multi-get */
+ ms_mlget_task_item_t *mlget_item = NULL;
+ if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
+ || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
+ {
+ c->mlget_task.value_index++;
+ mlget_item = &c->mlget_task.mlget_item[c->mlget_task.value_index];
+
+ if (mlget_item->item->key_prefix == c->currcmd.key_prefix) {
+ c->curr_task.item = mlget_item->item;
+ c->curr_task.verify = mlget_item->verify;
+ c->curr_task.finish_verify = mlget_item->finish_verify;
+ mlget_item->get_miss = false;
+ } else {
+ /* Try to find the task item in multi-get task array */
+ for (int i = 0; i < c->mlget_task.mlget_num; i++) {
+ mlget_item = &c->mlget_task.mlget_item[i];
+ if (mlget_item->item->key_prefix == c->currcmd.key_prefix) {
+ c->curr_task.item = mlget_item->item;
+ c->curr_task.verify = mlget_item->verify;
+ c->curr_task.finish_verify = mlget_item->finish_verify;
+ mlget_item->get_miss = false;
+
+ break;
+ }
+ }
+ }
+ }
+
+ ms_verify_value(c, mlget_item, c->rcurr, c->rvbytes - 2);
+
+ c->curr_task.get_miss = false;
+ c->rbytes -= c->rvbytes;
+ c->rcurr = c->rcurr + c->rvbytes;
+ assert(c->rcurr <= (c->rbuf + c->rsize));
+ c->readval = false;
+ c->rvbytes = 0;
+} /* ms_ascii_complete_nread */
+
+/**
+ * For binary protocol, after store the data into the local
+ * buffer, run this function to handle the data.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_bin_complete_nread(ms_conn_t *c) {
+ assert(c);
+ assert(c->rbytes >= c->rvbytes);
+ assert(c->protocol == binary_prot);
+
+ int extlen = c->binary_header.response.extlen;
+ int keylen = c->binary_header.response.keylen;
+ uint8_t opcode = c->binary_header.response.opcode;
+
+ /* not get command or not include value, just return */
+ if (((opcode != PROTOCOL_BINARY_CMD_GET) && (opcode != PROTOCOL_BINARY_CMD_GETQ))
+ || (c->rvbytes <= extlen + keylen))
+ {
+ /* get miss */
+ if (c->binary_header.response.opcode == PROTOCOL_BINARY_CMD_GET) {
+ c->currcmd.retstat = MCD_END;
+ c->curr_task.get_miss = true;
+ }
+
+ c->readval = false;
+ c->rvbytes = 0;
+ ms_reset_conn(c, false);
+ return;
+ }
+
+ /* multi-get */
+ ms_mlget_task_item_t *mlget_item = NULL;
+ if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
+ || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
+ {
+ c->mlget_task.value_index++;
+ mlget_item = &c->mlget_task.mlget_item[c->mlget_task.value_index];
+
+ c->curr_task.item = mlget_item->item;
+ c->curr_task.verify = mlget_item->verify;
+ c->curr_task.finish_verify = mlget_item->finish_verify;
+ mlget_item->get_miss = false;
+ }
+
+ ms_verify_value(c, mlget_item, c->rcurr + extlen + keylen, c->rvbytes - extlen - keylen);
+
+ c->currcmd.retstat = MCD_END;
+ c->curr_task.get_miss = false;
+ c->rbytes -= c->rvbytes;
+ c->rcurr = c->rcurr + c->rvbytes;
+ assert(c->rcurr <= (c->rbuf + c->rsize));
+ c->readval = false;
+ c->rvbytes = 0;
+
+ if (ms_setting.mult_key_num > 1) {
+ /* multi-get have check all the item */
+ if (c->mlget_task.value_index == c->mlget_task.mlget_num - 1) {
+ ms_reset_conn(c, false);
+ }
+ } else {
+ /* single get */
+ ms_reset_conn(c, false);
+ }
+} /* ms_bin_complete_nread */
+
+/**
+ * we get here after reading the value of get commands.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_complete_nread(ms_conn_t *c) {
+ assert(c);
+ assert(c->rbytes >= c->rvbytes);
+ assert(c->protocol == ascii_prot || c->protocol == binary_prot);
+
+ if (c->protocol == binary_prot) {
+ ms_bin_complete_nread(c);
+ } else {
+ ms_ascii_complete_nread(c);
+ }
+} /* ms_complete_nread */
+
+/**
+ * Adds a message header to a connection.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_add_msghdr(ms_conn_t *c) {
+ struct msghdr *msg;
+
+ assert(c);
+
+ if (c->msgsize == c->msgused) {
+ msg = realloc(c->msglist, (size_t) c->msgsize * 2 * sizeof(struct msghdr));
+ if (!msg)
+ return -1;
+
+ c->msglist = msg;
+ c->msgsize *= 2;
+ }
+
+ msg = c->msglist + c->msgused;
+
+ /**
+ * this wipes msg_iovlen, msg_control, msg_controllen, and
+ * msg_flags, the last 3 of which aren't defined on solaris:
+ */
+ memset(msg, 0, sizeof(struct msghdr));
+
+ msg->msg_iov = &c->iov[c->iovused];
+
+ if (c->udp && (c->srv_recv_addr_size > 0)) {
+ msg->msg_name = &c->srv_recv_addr;
+ msg->msg_namelen = c->srv_recv_addr_size;
+ }
+
+ c->msgbytes = 0;
+ c->msgused++;
+
+ if (c->udp) {
+ /* Leave room for the UDP header, which we'll fill in later. */
+ return ms_add_iov(c, NULL, UDP_HEADER_SIZE);
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_add_msghdr */
+
+/**
+ * Ensures that there is room for another structure iovec in a connection's
+ * iov list.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_ensure_iov_space(ms_conn_t *c) {
+ assert(c);
+
+ if (c->iovused >= c->iovsize) {
+ int i, iovnum;
+ struct iovec *new_iov =
+ (struct iovec *) realloc(c->iov, ((size_t) c->iovsize * 2) * sizeof(struct iovec));
+ if (!new_iov)
+ return -1;
+
+ c->iov = new_iov;
+ c->iovsize *= 2;
+
+ /* Point all the msghdr structures at the new list. */
+ for (i = 0, iovnum = 0; i < c->msgused; i++) {
+ c->msglist[i].msg_iov = &c->iov[iovnum];
+ iovnum += (int) c->msglist[i].msg_iovlen;
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_ensure_iov_space */
+
+/**
+ * Adds data to the list of pending data that will be written out to a
+ * connection.
+ *
+ * @param c, pointer of the concurrency
+ * @param buf, the buffer includes data to send
+ * @param len, the data length in the buffer
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_add_iov(ms_conn_t *c, const void *buf, int len) {
+ struct msghdr *m;
+ int leftover;
+ bool limit_to_mtu;
+
+ assert(c);
+
+ do {
+ m = &c->msglist[c->msgused - 1];
+
+ /*
+ * Limit UDP packets, to UDP_MAX_PAYLOAD_SIZE bytes.
+ */
+ limit_to_mtu = c->udp;
+
+#ifdef IOV_MAX
+ /* We may need to start a new msghdr if this one is full. */
+ if ((m->msg_iovlen == IOV_MAX) || (limit_to_mtu && (c->msgbytes >= UDP_MAX_SEND_PAYLOAD_SIZE)))
+ {
+ ms_add_msghdr(c);
+ m = &c->msglist[c->msgused - 1];
+ }
+#endif
+
+ if (ms_ensure_iov_space(c))
+ return -1;
+
+ /* If the fragment is too big to fit in the datagram, split it up */
+ if (limit_to_mtu && (len + c->msgbytes > UDP_MAX_SEND_PAYLOAD_SIZE)) {
+ leftover = len + c->msgbytes - UDP_MAX_SEND_PAYLOAD_SIZE;
+ len -= leftover;
+ } else {
+ leftover = 0;
+ }
+
+ m = &c->msglist[c->msgused - 1];
+ m->msg_iov[m->msg_iovlen].iov_base = (void *) buf;
+ m->msg_iov[m->msg_iovlen].iov_len = (size_t) len;
+
+ c->msgbytes += len;
+ c->iovused++;
+ m->msg_iovlen++;
+
+ buf = ((char *) buf) + len;
+ len = leftover;
+ } while (leftover > 0);
+
+ return EXIT_SUCCESS;
+} /* ms_add_iov */
+
+/**
+ * Constructs a set of UDP headers and attaches them to the outgoing messages.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_udp_headers(ms_conn_t *c) {
+ int i;
+ unsigned char *hdr;
+
+ assert(c);
+
+ c->request_id = ms_get_udp_request_id();
+
+ if (c->msgused > c->hdrsize) {
+ void *new_hdrbuf;
+ if (c->hdrbuf)
+ new_hdrbuf = realloc(c->hdrbuf, (size_t) c->msgused * 2 * UDP_HEADER_SIZE);
+ else
+ new_hdrbuf = malloc((size_t) c->msgused * 2 * UDP_HEADER_SIZE);
+ if (!new_hdrbuf)
+ return -1;
+
+ c->hdrbuf = (unsigned char *) new_hdrbuf;
+ c->hdrsize = c->msgused * 2;
+ }
+
+ /* If this is a multi-packet request, drop it. */
+ if (c->udp && (c->msgused > 1)) {
+ fprintf(stderr, "multi-packet request for UDP not supported.\n");
+ return -1;
+ }
+
+ hdr = c->hdrbuf;
+ for (i = 0; i < c->msgused; i++) {
+ c->msglist[i].msg_iov[0].iov_base = (void *) hdr;
+ c->msglist[i].msg_iov[0].iov_len = UDP_HEADER_SIZE;
+ *hdr++ = (unsigned char) (c->request_id / 256);
+ *hdr++ = (unsigned char) (c->request_id % 256);
+ *hdr++ = (unsigned char) (i / 256);
+ *hdr++ = (unsigned char) (i % 256);
+ *hdr++ = (unsigned char) (c->msgused / 256);
+ *hdr++ = (unsigned char) (c->msgused % 256);
+ *hdr++ = (unsigned char) 1; /* support facebook memcached */
+ *hdr++ = (unsigned char) 0;
+ assert(hdr == ((unsigned char *) c->msglist[i].msg_iov[0].iov_base + UDP_HEADER_SIZE));
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_build_udp_headers */
+
+/**
+ * Transmit the next chunk of data from our list of msgbuf structures.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return TRANSMIT_COMPLETE All done writing.
+ * TRANSMIT_INCOMPLETE More data remaining to write.
+ * TRANSMIT_SOFT_ERROR Can't write any more right now.
+ * TRANSMIT_HARD_ERROR Can't write (c->state is set to conn_closing)
+ */
+static int ms_transmit(ms_conn_t *c) {
+ assert(c);
+
+ if ((c->msgcurr < c->msgused) && (c->msglist[c->msgcurr].msg_iovlen == 0)) {
+ /* Finished writing the current msg; advance to the next. */
+ c->msgcurr++;
+ }
+
+ if (c->msgcurr < c->msgused) {
+ ssize_t res;
+ struct msghdr *m = &c->msglist[c->msgcurr];
+
+ res = sendmsg(c->sfd, m, 0);
+ if (res > 0) {
+ atomic_add_size(&ms_stats.bytes_written, res);
+
+ /* We've written some of the data. Remove the completed
+ * iovec entries from the list of pending writes. */
+ while (m->msg_iovlen > 0 && res >= (ssize_t) m->msg_iov->iov_len) {
+ res -= (ssize_t) m->msg_iov->iov_len;
+ m->msg_iovlen--;
+ m->msg_iov++;
+ }
+
+ /* Might have written just part of the last iovec entry;
+ * adjust it so the next write will do the rest. */
+ if (res > 0) {
+ m->msg_iov->iov_base = (void *) ((unsigned char *) m->msg_iov->iov_base + res);
+ m->msg_iov->iov_len -= (size_t) res;
+ }
+ return TRANSMIT_INCOMPLETE;
+ }
+ if ((res == -1) && ((errno == EAGAIN) || (errno == EWOULDBLOCK))) {
+ if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ return TRANSMIT_HARD_ERROR;
+ }
+ return TRANSMIT_SOFT_ERROR;
+ }
+
+ /* if res==0 or res==-1 and error is not EAGAIN or EWOULDBLOCK,
+ * we have a real error, on which we close the connection */
+ fprintf(stderr, "Failed to write, and not due to blocking.\n");
+
+ ms_conn_set_state(c, conn_closing);
+ return TRANSMIT_HARD_ERROR;
+ } else {
+ return TRANSMIT_COMPLETE;
+ }
+} /* ms_transmit */
+
+/**
+ * Shrinks a connection's buffers if they're too big. This prevents
+ * periodic large "mget" response from server chewing lots of client
+ * memory.
+ *
+ * This should only be called in between requests since it can wipe output
+ * buffers!
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_conn_shrink(ms_conn_t *c) {
+ assert(c);
+
+ if (c->udp)
+ return;
+
+ if ((c->rsize > READ_BUFFER_HIGHWAT) && (c->rbytes < DATA_BUFFER_SIZE)) {
+ char *newbuf;
+
+ if (c->rcurr != c->rbuf)
+ memmove(c->rbuf, c->rcurr, (size_t) c->rbytes);
+
+ newbuf = (char *) realloc((void *) c->rbuf, DATA_BUFFER_SIZE);
+
+ if (newbuf) {
+ c->rbuf = newbuf;
+ c->rsize = DATA_BUFFER_SIZE;
+ }
+ c->rcurr = c->rbuf;
+ }
+
+ if (c->udp && (c->rudpsize > UDP_DATA_BUFFER_HIGHWAT)
+ && (c->rudpbytes + UDP_MAX_PAYLOAD_SIZE < UDP_DATA_BUFFER_SIZE))
+ {
+ char *new_rbuf = (char *) realloc(c->rudpbuf, (size_t) c->rudpsize * 2);
+ if (new_rbuf) {
+ c->rudpbuf = new_rbuf;
+ c->rudpsize = UDP_DATA_BUFFER_SIZE;
+ }
+ /* TODO check error condition? */
+ }
+
+ if (c->msgsize > MSG_LIST_HIGHWAT) {
+ struct msghdr *newbuf =
+ (struct msghdr *) realloc((void *) c->msglist, MSG_LIST_INITIAL * sizeof(c->msglist[0]));
+ if (newbuf) {
+ c->msglist = newbuf;
+ c->msgsize = MSG_LIST_INITIAL;
+ }
+ /* TODO check error condition? */
+ }
+
+ if (c->iovsize > IOV_LIST_HIGHWAT) {
+ struct iovec *newbuf =
+ (struct iovec *) realloc((void *) c->iov, IOV_LIST_INITIAL * sizeof(c->iov[0]));
+ if (newbuf) {
+ c->iov = newbuf;
+ c->iovsize = IOV_LIST_INITIAL;
+ }
+ /* TODO check return value */
+ }
+} /* ms_conn_shrink */
+
+/**
+ * Sets a connection's current state in the state machine. Any special
+ * processing that needs to happen on certain state transitions can
+ * happen here.
+ *
+ * @param c, pointer of the concurrency
+ * @param state, connection state
+ */
+static void ms_conn_set_state(ms_conn_t *c, int state) {
+ assert(c);
+
+ if (state != c->state) {
+ if (state == conn_read) {
+ ms_conn_shrink(c);
+ }
+ c->state = state;
+ }
+} /* ms_conn_set_state */
+
+/**
+ * update the event if socks change state. for example: when
+ * change the listen scoket read event to sock write event, or
+ * change socket handler, we could call this function.
+ *
+ * @param c, pointer of the concurrency
+ * @param new_flags, new event flags
+ *
+ * @return bool, if success, return true, else return false
+ */
+static bool ms_update_event(ms_conn_t *c, const int new_flags) {
+ assert(c);
+
+ struct event_base *base = c->event.ev_base;
+ if ((c->ev_flags == new_flags) && (ms_setting.rep_write_srv == 0)
+ && (!ms_setting.facebook_test || (c->total_sfds == 1)))
+ {
+ return true;
+ }
+
+ if (event_del(&c->event) == -1) {
+ /* try to delete the event again */
+ if (event_del(&c->event) == -1) {
+ return false;
+ }
+ }
+
+ event_set(&c->event, c->sfd, (short) new_flags, ms_event_handler, (void *) c);
+ event_base_set(base, &c->event);
+ c->ev_flags = (short) new_flags;
+
+ if (event_add(&c->event, NULL) == -1) {
+ return false;
+ }
+
+ return true;
+} /* ms_update_event */
+
+/**
+ * If user want to get the expected throughput, we could limit
+ * the performance of memslap. we could give up some work and
+ * just wait a short time. The function is used to check this
+ * case.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return bool, if success, return true, else return false
+ */
+static bool ms_need_yield(ms_conn_t *c) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ int64_t tps = 0;
+ int64_t time_diff = 0;
+ struct timeval curr_time;
+ ms_task_t *task = &c->curr_task;
+
+ if (ms_setting.expected_tps > 0) {
+ gettimeofday(&curr_time, NULL);
+ time_diff = ms_time_diff(&ms_thread->startup_time, &curr_time);
+ tps = (int64_t)(((task->get_opt + task->set_opt) / (uint64_t) time_diff) * 1000000);
+
+ /* current throughput is greater than expected throughput */
+ if (tps > ms_thread->thread_ctx->tps_perconn) {
+ return true;
+ }
+ }
+
+ return false;
+} /* ms_need_yield */
+
+/**
+ * used to update the start time of each operation
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_update_start_time(ms_conn_t *c) {
+ ms_task_item_t *item = c->curr_task.item;
+
+ if ((ms_setting.stat_freq > 0) || c->udp || ((c->currcmd.cmd == CMD_SET) && (item->exp_time > 0)))
+ {
+ gettimeofday(&c->start_time, NULL);
+ if ((c->currcmd.cmd == CMD_SET) && (item->exp_time > 0)) {
+ /* record the current time */
+ item->client_time = c->start_time.tv_sec;
+ }
+ }
+} /* ms_update_start_time */
+
+/**
+ * run the state machine
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_drive_machine(ms_conn_t *c) {
+ bool stop = false;
+
+ assert(c);
+
+ while (!stop) {
+ switch (c->state) {
+ case conn_read:
+ if (c->readval) {
+ if (c->rbytes >= c->rvbytes) {
+ ms_complete_nread(c);
+ break;
+ }
+ } else {
+ if (ms_try_read_line(c)) {
+ break;
+ }
+ }
+
+ if (ms_try_read_network(c)) {
+ break;
+ }
+
+ /* doesn't read all the response data, wait event wake up */
+ if (!c->currcmd.isfinish) {
+ if (!ms_update_event(c, EV_READ | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ break;
+ }
+ stop = true;
+ break;
+ }
+
+ /* we have no command line and no data to read from network, next write */
+ ms_conn_set_state(c, conn_write);
+ memcpy(&c->precmd, &c->currcmd, sizeof(ms_cmdstat_t)); /* replicate command state */
+
+ break;
+
+ case conn_write:
+ if (!c->ctnwrite && ms_need_yield(c)) {
+ usleep(10);
+
+ if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ break;
+ }
+ stop = true;
+ break;
+ }
+
+ if (!c->ctnwrite && (ms_exec_task(c))) {
+ ms_conn_set_state(c, conn_closing);
+ break;
+ }
+
+ /* record the start time before starting to send data if necessary */
+ if (!c->ctnwrite || (c->change_sfd && c->ctnwrite)) {
+ if (c->change_sfd) {
+ c->change_sfd = false;
+ }
+ ms_update_start_time(c);
+ }
+
+ /* change sfd if necessary */
+ if (c->change_sfd) {
+ c->ctnwrite = true;
+ stop = true;
+ break;
+ }
+
+ /* execute task until nothing need be written to network */
+ if (!c->ctnwrite && (c->msgcurr == c->msgused)) {
+ if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ break;
+ }
+ stop = true;
+ break;
+ }
+
+ switch (ms_transmit(c)) {
+ case TRANSMIT_COMPLETE:
+ /* we have no data to write to network, next wait repose */
+ if (!ms_update_event(c, EV_READ | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ c->ctnwrite = false;
+ break;
+ }
+ ms_conn_set_state(c, conn_read);
+ c->ctnwrite = false;
+ stop = true;
+ break;
+
+ case TRANSMIT_INCOMPLETE:
+ c->ctnwrite = true;
+ break; /* Continue in state machine. */
+
+ case TRANSMIT_HARD_ERROR:
+ c->ctnwrite = false;
+ break;
+
+ case TRANSMIT_SOFT_ERROR:
+ c->ctnwrite = true;
+ stop = true;
+ break;
+
+ default:
+ break;
+ } /* switch */
+
+ break;
+
+ case conn_closing:
+ /* recovery mode, need reconnect if connection close */
+ if (ms_setting.reconnect
+ && (!ms_global.time_out || ((ms_setting.run_time == 0) && (c->remain_exec_num > 0))))
+ {
+ if (ms_reconn(c)) {
+ ms_conn_close(c);
+ stop = true;
+ break;
+ }
+
+ ms_reset_conn(c, false);
+
+ if (c->total_sfds == 1) {
+ if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ break;
+ }
+ }
+
+ break;
+ } else {
+ ms_conn_close(c);
+ stop = true;
+ break;
+ }
+
+ default:
+ assert(0);
+ } /* switch */
+ }
+} /* ms_drive_machine */
+
+/**
+ * the event handler of each thread
+ *
+ * @param fd, the file descriptor of socket
+ * @param which, event flag
+ * @param arg, argument
+ */
+void ms_event_handler(const int fd, const short which, void *arg) {
+ ms_conn_t *c = (ms_conn_t *) arg;
+
+ assert(c);
+
+ c->which = which;
+
+ /* sanity */
+ if (fd != c->sfd) {
+ fprintf(stderr, "Catastrophic: event fd: %d doesn't match conn fd: %d\n", fd, c->sfd);
+ ms_conn_close(c);
+ exit(1);
+ }
+ assert(fd == c->sfd);
+
+ ms_drive_machine(c);
+
+ /* wait for next event */
+} /* ms_event_handler */
+
+/**
+ * get the next socket descriptor index to run for replication
+ *
+ * @param c, pointer of the concurrency
+ * @param cmd, command(get or set )
+ *
+ * @return int, if success, return the index, else return EXIT_SUCCESS
+ */
+static uint32_t ms_get_rep_sock_index(ms_conn_t *c, int cmd) {
+ uint32_t sock_index = 0;
+ uint32_t i = 0;
+
+ if (c->total_sfds == 1) {
+ return EXIT_SUCCESS;
+ }
+
+ if (ms_setting.rep_write_srv == 0) {
+ return sock_index;
+ }
+
+ do {
+ if (cmd == CMD_SET) {
+ for (i = 0; i < ms_setting.rep_write_srv; i++) {
+ if (c->tcpsfd[i] > 0) {
+ break;
+ }
+ }
+
+ if (i == ms_setting.rep_write_srv) {
+ /* random get one replication server to read */
+ sock_index = (uint32_t) random() % c->total_sfds;
+ } else {
+ /* random get one replication writing server to write */
+ sock_index = (uint32_t) random() % ms_setting.rep_write_srv;
+ }
+ } else if (cmd == CMD_GET) {
+ /* random get one replication server to read */
+ sock_index = (uint32_t) random() % c->total_sfds;
+ }
+ } while (c->tcpsfd[sock_index] == 0);
+
+ return sock_index;
+} /* ms_get_rep_sock_index */
+
+/**
+ * get the next socket descriptor index to run
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, return the index
+ */
+static uint32_t ms_get_next_sock_index(ms_conn_t *c) {
+ uint32_t sock_index = 0;
+
+ do {
+ sock_index = (++c->cur_idx == c->total_sfds) ? 0 : c->cur_idx;
+ } while (c->tcpsfd[sock_index] == 0);
+
+ return sock_index;
+} /* ms_get_next_sock_index */
+
+/**
+ * update socket event of the connections
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_update_conn_sock_event(ms_conn_t *c) {
+ assert(c);
+
+ switch (c->currcmd.cmd) {
+ case CMD_SET:
+ if (ms_setting.facebook_test && c->udp) {
+ c->sfd = c->tcpsfd[0];
+ c->udp = false;
+ c->change_sfd = true;
+ }
+ break;
+
+ case CMD_GET:
+ if (ms_setting.facebook_test && !c->udp) {
+ c->sfd = c->udpsfd;
+ c->udp = true;
+ c->change_sfd = true;
+ }
+ break;
+
+ default:
+ break;
+ } /* switch */
+
+ if (!c->udp && (c->total_sfds > 1)) {
+ if (c->cur_idx != c->total_sfds) {
+ if (ms_setting.rep_write_srv == 0) {
+ c->cur_idx = ms_get_next_sock_index(c);
+ } else {
+ c->cur_idx = ms_get_rep_sock_index(c, c->currcmd.cmd);
+ }
+ } else {
+ /* must select the first sock of the connection at the beginning */
+ c->cur_idx = 0;
+ }
+
+ c->sfd = c->tcpsfd[c->cur_idx];
+ assert(c->sfd);
+ c->change_sfd = true;
+ }
+
+ if (c->change_sfd) {
+ if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
+ fprintf(stderr, "Couldn't update event.\n");
+ ms_conn_set_state(c, conn_closing);
+ return -1;
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_update_conn_sock_event */
+
+/**
+ * for ASCII protocol, this function build the set command
+ * string and send the command.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_ascii_write_buf_set(ms_conn_t *c, ms_task_item_t *item) {
+ int value_offset;
+ int write_len;
+ char *buffer = c->wbuf;
+
+ write_len = snprintf(buffer, c->wsize, " %u %d %d\r\n", 0, item->exp_time, item->value_size);
+
+ if (write_len > c->wsize || write_len < 0) {
+ /* ought to be always enough. just fail for simplicity */
+ fprintf(stderr, "output command line too long.\n");
+ return -1;
+ }
+
+ if (item->value_offset == INVALID_OFFSET) {
+ value_offset = item->key_suffix_offset;
+ } else {
+ value_offset = item->value_offset;
+ }
+
+ if ((ms_add_iov(c, "set ", 4))
+ || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
+ || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
+ item->key_size - (int) KEY_PREFIX_SIZE)
+)
+ || (ms_add_iov(c, buffer, write_len))
+ || (ms_add_iov(c, &ms_setting.char_block[value_offset], item->value_size))
+ || (ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c))))
+ {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_build_ascii_write_buf_set */
+
+/**
+ * used to send set command to server
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_mcd_set(ms_conn_t *c, ms_task_item_t *item) {
+ assert(c);
+
+ c->currcmd.cmd = CMD_SET;
+ c->currcmd.isfinish = false;
+ c->currcmd.retstat = MCD_FAILURE;
+
+ if (ms_update_conn_sock_event(c)) {
+ return -1;
+ }
+
+ c->msgcurr = 0;
+ c->msgused = 0;
+ c->iovused = 0;
+ if (ms_add_msghdr(c)) {
+ fprintf(stderr, "Out of memory preparing request.");
+ return -1;
+ }
+
+ /* binary protocol */
+ if (c->protocol == binary_prot) {
+ if (ms_build_bin_write_buf_set(c, item)) {
+ return -1;
+ }
+ } else {
+ if (ms_build_ascii_write_buf_set(c, item)) {
+ return -1;
+ }
+ }
+
+ atomic_add_size(&ms_stats.obj_bytes, item->key_size + item->value_size);
+ atomic_add_size(&ms_stats.cmd_set, 1);
+
+ return EXIT_SUCCESS;
+} /* ms_mcd_set */
+
+/**
+ * for ASCII protocol, this function build the get command
+ * string and send the command.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_ascii_write_buf_get(ms_conn_t *c, ms_task_item_t *item) {
+ if ((ms_add_iov(c, "get ", 4))
+ || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
+ || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
+ item->key_size - (int) KEY_PREFIX_SIZE)
+)
+ || (ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c))))
+ {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_build_ascii_write_buf_get */
+
+/**
+ * used to send the get command to server
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_mcd_get(ms_conn_t *c, ms_task_item_t *item) {
+ assert(c);
+
+ c->currcmd.cmd = CMD_GET;
+ c->currcmd.isfinish = false;
+ c->currcmd.retstat = MCD_FAILURE;
+
+ if (ms_update_conn_sock_event(c)) {
+ return -1;
+ }
+
+ c->msgcurr = 0;
+ c->msgused = 0;
+ c->iovused = 0;
+ if (ms_add_msghdr(c)) {
+ fprintf(stderr, "Out of memory preparing request.");
+ return -1;
+ }
+
+ /* binary protocol */
+ if (c->protocol == binary_prot) {
+ if (ms_build_bin_write_buf_get(c, item)) {
+ return -1;
+ }
+ } else {
+ if (ms_build_ascii_write_buf_get(c, item)) {
+ return -1;
+ }
+ }
+
+ atomic_add_size(&ms_stats.cmd_get, 1);
+
+ return EXIT_SUCCESS;
+} /* ms_mcd_get */
+
+/**
+ * for ASCII protocol, this function build the multi-get command
+ * string and send the command.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_ascii_write_buf_mlget(ms_conn_t *c) {
+ ms_task_item_t *item;
+
+ if (ms_add_iov(c, "get", 3)) {
+ return -1;
+ }
+
+ for (int i = 0; i < c->mlget_task.mlget_num; i++) {
+ item = c->mlget_task.mlget_item[i].item;
+ assert(item);
+ if ((ms_add_iov(c, " ", 1))
+ || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
+ || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
+ item->key_size - (int) KEY_PREFIX_SIZE)
+))
+ {
+ return -1;
+ }
+ }
+
+ if ((ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c)))) {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_build_ascii_write_buf_mlget */
+
+/**
+ * used to send the multi-get command to server
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_mcd_mlget(ms_conn_t *c) {
+ ms_task_item_t *item;
+
+ assert(c);
+ assert(c->mlget_task.mlget_num >= 1);
+
+ c->currcmd.cmd = CMD_GET;
+ c->currcmd.isfinish = false;
+ c->currcmd.retstat = MCD_FAILURE;
+
+ if (ms_update_conn_sock_event(c)) {
+ return -1;
+ }
+
+ c->msgcurr = 0;
+ c->msgused = 0;
+ c->iovused = 0;
+ if (ms_add_msghdr(c)) {
+ fprintf(stderr, "Out of memory preparing request.");
+ return -1;
+ }
+
+ /* binary protocol */
+ if (c->protocol == binary_prot) {
+ if (ms_build_bin_write_buf_mlget(c)) {
+ return -1;
+ }
+ } else {
+ if (ms_build_ascii_write_buf_mlget(c)) {
+ return -1;
+ }
+ }
+
+ /* decrease operation time of each item */
+ for (int i = 0; i < c->mlget_task.mlget_num; i++) {
+ item = c->mlget_task.mlget_item[i].item;
+ atomic_add_size(&ms_stats.cmd_get, 1);
+ }
+
+ (void) item;
+
+ return EXIT_SUCCESS;
+} /* ms_mcd_mlget */
+
+/**
+ * binary protocol support
+ */
+
+/**
+ * for binary protocol, parse the response of server
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_bin_process_response(ms_conn_t *c) {
+ const char *errstr = NULL;
+
+ assert(c);
+
+ uint32_t bodylen = c->binary_header.response.bodylen;
+ uint8_t opcode = c->binary_header.response.opcode;
+ uint16_t status = c->binary_header.response.status;
+
+ if (bodylen > 0) {
+ c->rvbytes = (int32_t) bodylen;
+ c->readval = true;
+ return EXIT_FAILURE;
+ } else {
+ switch (status) {
+ case PROTOCOL_BINARY_RESPONSE_SUCCESS:
+ if (opcode == PROTOCOL_BINARY_CMD_SET) {
+ c->currcmd.retstat = MCD_STORED;
+ } else if (opcode == PROTOCOL_BINARY_CMD_DELETE) {
+ c->currcmd.retstat = MCD_DELETED;
+ } else if (opcode == PROTOCOL_BINARY_CMD_GET) {
+ c->currcmd.retstat = MCD_END;
+ }
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_ENOMEM:
+ errstr = "Out of memory";
+ c->currcmd.retstat = MCD_SERVER_ERROR;
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND:
+ errstr = "Unknown command";
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_KEY_ENOENT:
+ errstr = "Not found";
+ c->currcmd.retstat = MCD_NOTFOUND;
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_EINVAL:
+ errstr = "Invalid arguments";
+ c->currcmd.retstat = MCD_PROTOCOL_ERROR;
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS:
+ errstr = "Data exists for key.";
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_E2BIG:
+ errstr = "Too large.";
+ c->currcmd.retstat = MCD_SERVER_ERROR;
+ break;
+
+ case PROTOCOL_BINARY_RESPONSE_NOT_STORED:
+ errstr = "Not stored.";
+ c->currcmd.retstat = MCD_NOTSTORED;
+ break;
+
+ default:
+ errstr = "Unknown error";
+ c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
+ break;
+ } /* switch */
+
+ if (errstr) {
+ fprintf(stderr, "%s\n", errstr);
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_bin_process_response */
+
+/* build binary header and add the header to the buffer to send */
+
+/**
+ * build binary header and add the header to the buffer to send
+ *
+ * @param c, pointer of the concurrency
+ * @param opcode, operation code
+ * @param hdr_len, length of header
+ * @param key_len, length of key
+ * @param body_len. length of body
+ */
+static void ms_add_bin_header(ms_conn_t *c, uint8_t opcode, uint8_t hdr_len, uint16_t key_len,
+ uint32_t body_len) {
+ protocol_binary_request_header *header;
+
+ assert(c);
+
+ header = (protocol_binary_request_header *) c->wcurr;
+
+ header->request.magic = (uint8_t) PROTOCOL_BINARY_REQ;
+ header->request.opcode = (uint8_t) opcode;
+ header->request.keylen = htons(key_len);
+
+ header->request.extlen = (uint8_t) hdr_len;
+ header->request.datatype = (uint8_t) PROTOCOL_BINARY_RAW_BYTES;
+ header->request.vbucket = 0;
+
+ header->request.bodylen = htonl(body_len);
+ header->request.opaque = 0;
+ header->request.cas = 0;
+
+ ms_add_iov(c, c->wcurr, sizeof(header->request));
+} /* ms_add_bin_header */
+
+/**
+ * add the key to the socket write buffer array
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ */
+static void ms_add_key_to_iov(ms_conn_t *c, ms_task_item_t *item) {
+ ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE);
+ ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
+ item->key_size - (int) KEY_PREFIX_SIZE);
+}
+
+/**
+ * for binary protocol, this function build the set command
+ * and add the command to send buffer array.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_bin_write_buf_set(ms_conn_t *c, ms_task_item_t *item) {
+ assert(c->wbuf == c->wcurr);
+
+ int value_offset;
+ protocol_binary_request_set *rep = (protocol_binary_request_set *) c->wcurr;
+ uint16_t keylen = (uint16_t) item->key_size;
+ uint32_t bodylen =
+ (uint32_t) sizeof(rep->message.body) + (uint32_t) keylen + (uint32_t) item->value_size;
+
+ ms_add_bin_header(c, PROTOCOL_BINARY_CMD_SET, sizeof(rep->message.body), keylen, bodylen);
+ rep->message.body.flags = 0;
+ rep->message.body.expiration = htonl((uint32_t) item->exp_time);
+ ms_add_iov(c, &rep->message.body, sizeof(rep->message.body));
+ ms_add_key_to_iov(c, item);
+
+ if (item->value_offset == INVALID_OFFSET) {
+ value_offset = item->key_suffix_offset;
+ } else {
+ value_offset = item->value_offset;
+ }
+ ms_add_iov(c, &ms_setting.char_block[value_offset], item->value_size);
+
+ return EXIT_SUCCESS;
+} /* ms_build_bin_write_buf_set */
+
+/**
+ * for binary protocol, this function build the get command and
+ * add the command to send buffer array.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_bin_write_buf_get(ms_conn_t *c, ms_task_item_t *item) {
+ assert(c->wbuf == c->wcurr);
+
+ ms_add_bin_header(c, PROTOCOL_BINARY_CMD_GET, 0, (uint16_t) item->key_size,
+ (uint32_t) item->key_size);
+ ms_add_key_to_iov(c, item);
+
+ return EXIT_SUCCESS;
+} /* ms_build_bin_write_buf_get */
+
+/**
+ * for binary protocol, this function build the multi-get
+ * command and add the command to send buffer array.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_build_bin_write_buf_mlget(ms_conn_t *c) {
+ ms_task_item_t *item;
+
+ assert(c->wbuf == c->wcurr);
+
+ for (int i = 0; i < c->mlget_task.mlget_num; i++) {
+ item = c->mlget_task.mlget_item[i].item;
+ assert(item);
+
+ ms_add_bin_header(c, PROTOCOL_BINARY_CMD_GET, 0, (uint16_t) item->key_size,
+ (uint32_t) item->key_size);
+ ms_add_key_to_iov(c, item);
+ c->wcurr += sizeof(protocol_binary_request_get);
+ }
+
+ c->wcurr = c->wbuf;
+
+ return EXIT_SUCCESS;
+} /* ms_build_bin_write_buf_mlget */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_CONN_H
+#define MS_CONN_H
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <event.h>
+#include <netdb.h>
+
+#include "ms_task.h"
+#include "libmemcachedprotocol-0.0/binary.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define DATA_BUFFER_SIZE \
+ (1024 * 1024 + 2048) /* read buffer, 1M + 2k, enough for the max value(1M) */
+#define WRITE_BUFFER_SIZE (32 * 1024) /* write buffer, 32k */
+#define UDP_DATA_BUFFER_SIZE (1 * 1024 * 1024) /* read buffer for UDP, 1M */
+#define UDP_MAX_PAYLOAD_SIZE 1400 /* server limit UDP payload size */
+#define UDP_MAX_SEND_PAYLOAD_SIZE 1400 /* mtu size is 1500 */
+#define UDP_HEADER_SIZE 8 /* UDP header size */
+#define MAX_SENDBUF_SIZE (256 * 1024 * 1024) /* Maximum socket buffer size */
+#define SOCK_WAIT_TIMEOUT 30 /* maximum waiting time of UDP, 30s */
+#define MAX_UDP_PACKET (1 << 16) /* maximum UDP packets, 65536 */
+
+/* Initial size of the sendmsg() scatter/gather array. */
+#define IOV_LIST_INITIAL 400
+
+/* Initial number of sendmsg() argument structures to allocate. */
+#define MSG_LIST_INITIAL 10
+
+/* High water marks for buffer shrinking */
+#define READ_BUFFER_HIGHWAT (2 * DATA_BUFFER_SIZE)
+#define UDP_DATA_BUFFER_HIGHWAT (4 * UDP_DATA_BUFFER_SIZE)
+#define IOV_LIST_HIGHWAT 600
+#define MSG_LIST_HIGHWAT 100
+
+/* parse udp header */
+#define HEADER_TO_REQID(ptr) ((uint16_t) *ptr * 256 + (uint16_t) * (ptr + 1))
+#define HEADER_TO_SEQNUM(ptr) ((uint16_t) * (ptr + 2) * 256 + (uint16_t) * (ptr + 3))
+#define HEADER_TO_PACKETS(ptr) ((uint16_t) * (ptr + 4) * 256 + (uint16_t) * (ptr + 5))
+
+/* states of connection */
+enum conn_states {
+ conn_read, /* reading in a command line */
+ conn_write, /* writing out a simple response */
+ conn_closing /* closing this connection */
+};
+
+/* returned states of memcached command */
+enum mcd_ret {
+ MCD_SUCCESS, /* command success */
+ MCD_FAILURE, /* command failure */
+ MCD_UNKNOWN_READ_FAILURE, /* unknown read failure */
+ MCD_PROTOCOL_ERROR, /* protocol error */
+ MCD_CLIENT_ERROR, /* client error, wrong command */
+ MCD_SERVER_ERROR, /* server error, server run command failed */
+ MCD_DATA_EXISTS, /* object is existent in server */
+ MCD_NOTSTORED, /* server doesn't set the object successfully */
+ MCD_STORED, /* server set the object successfully */
+ MCD_NOTFOUND, /* server not find the object */
+ MCD_END, /* end of the response of get command */
+ MCD_DELETED, /* server delete the object successfully */
+ MCD_STAT /* response of stats command */
+};
+
+/* used to store the current or previous running command state */
+typedef struct cmdstat {
+ int cmd; /* command name */
+ int retstat; /* return state of this command */
+ bool isfinish; /* if it read all the response data */
+ uint64_t key_prefix; /* key prefix */
+} ms_cmdstat_t;
+
+/* udp packet structure */
+typedef struct udppkt {
+ uint8_t *header; /* udp header of the packet */
+ char *data; /* udp data of the packet */
+ int rbytes; /* number of data in the packet */
+ int copybytes; /* number of copied data in the packet */
+} ms_udppkt_t;
+
+/* three protocols supported */
+enum protocol {
+ ascii_prot = 3, /* ASCII protocol */
+ binary_prot /* binary protocol */
+};
+
+/**
+ * concurrency structure
+ *
+ * Each thread has a libevent to manage the events of network.
+ * Each thread has one or more self-governed concurrencies;
+ * each concurrency has one or more socket connections. This
+ * concurrency structure includes all the private variables of
+ * the concurrency.
+ */
+typedef struct conn {
+ uint32_t conn_idx; /* connection index in the thread */
+ int sfd; /* current tcp sock handler of the connection structure */
+ int udpsfd; /* current udp sock handler of the connection structure*/
+ int state; /* state of the connection */
+ struct event event; /* event for libevent */
+ short ev_flags; /* event flag for libevent */
+ short which; /* which events were just triggered */
+ bool change_sfd; /* whether change sfd */
+
+ int *tcpsfd; /* TCP sock array */
+ uint32_t total_sfds; /* how many socks in the tcpsfd array */
+ uint32_t alive_sfds; /* alive socks */
+ uint32_t cur_idx; /* current sock index in tcpsfd array */
+
+ ms_cmdstat_t precmd; /* previous command state */
+ ms_cmdstat_t currcmd; /* current command state */
+
+ char *rbuf; /* buffer to read commands into */
+ char *rcurr; /* but if we parsed some already, this is where we stopped */
+ int rsize; /* total allocated size of rbuf */
+ int rbytes; /* how much data, starting from rcur, do we have unparsed */
+
+ bool readval; /* read value state, read known data size */
+ int rvbytes; /* total value size need to read */
+
+ char *wbuf; /* buffer to write commands out */
+ char *wcurr; /* for multi-get, where we stopped */
+ int wsize; /* total allocated size of wbuf */
+ bool ctnwrite; /* continue to write */
+
+ /* data for the mwrite state */
+ struct iovec *iov;
+ int iovsize; /* number of elements allocated in iov[] */
+ int iovused; /* number of elements used in iov[] */
+
+ struct msghdr *msglist;
+ int msgsize; /* number of elements allocated in msglist[] */
+ int msgused; /* number of elements used in msglist[] */
+ int msgcurr; /* element in msglist[] being transmitted now */
+ int msgbytes; /* number of bytes in current msg */
+
+ /* data for UDP clients */
+ bool udp; /* is this is a UDP "connection" */
+ uint32_t request_id; /* UDP request ID of current operation, if this is a UDP "connection" */
+ uint8_t *hdrbuf; /* udp packet headers */
+ int hdrsize; /* number of headers' worth of space is allocated */
+ struct sockaddr srv_recv_addr; /* Sent the most recent request to which server */
+ socklen_t srv_recv_addr_size;
+
+ /* udp read buffer */
+ char *rudpbuf; /* buffer to read commands into for udp */
+ int rudpsize; /* total allocated size of rudpbuf */
+ int rudpbytes; /* how much data, starting from rudpbuf */
+
+ /* order udp packet */
+ ms_udppkt_t *udppkt; /* the offset of udp packet in rudpbuf */
+ int packets; /* number of total packets need to read */
+ int recvpkt; /* number of received packets */
+ int pktcurr; /* current packet in rudpbuf being ordered */
+ int ordcurr; /* current ordered packet */
+
+ ms_task_item_t *item_win; /* task sequence */
+ int win_size; /* current task window size */
+ uint64_t set_cursor; /* current set item index in the item window */
+ ms_task_t curr_task; /* current running task */
+ ms_mlget_task_t mlget_task; /* multi-get task */
+
+ int warmup_num; /* to run how many warm up operations*/
+ int remain_warmup_num; /* left how many warm up operations to run */
+ int64_t exec_num; /* to run how many task operations */
+ int64_t remain_exec_num; /* how many remained task operations to run */
+
+ /* response time statistic and time out control */
+ struct timeval start_time; /* start time of current operation(s) */
+ struct timeval end_time; /* end time of current operation(s) */
+
+ /* Binary protocol stuff */
+ protocol_binary_response_header binary_header; /* local temporary binary header */
+ enum protocol protocol; /* which protocol this connection speaks */
+} ms_conn_t;
+
+/* used to generate the key prefix */
+uint64_t ms_get_key_prefix(void);
+
+/**
+ * setup a connection, each connection structure of each
+ * thread must call this function to initialize.
+ */
+int ms_setup_conn(ms_conn_t *c);
+
+/* after one operation completes, reset the connection */
+void ms_reset_conn(ms_conn_t *c, bool timeout);
+
+/**
+ * reconnect several disconnected socks in the connection
+ * structure, the ever-1-second timer of the thread will check
+ * whether some socks in the connections disconnect. if
+ * disconnect, reconnect the sock.
+ */
+int ms_reconn_socks(ms_conn_t *c);
+
+/* used to send set command to server */
+int ms_mcd_set(ms_conn_t *c, ms_task_item_t *item);
+
+/* used to send the get command to server */
+int ms_mcd_get(ms_conn_t *c, ms_task_item_t *item);
+
+/* used to send the multi-get command to server */
+int ms_mcd_mlget(ms_conn_t *c);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_CONN_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <limits.h>
+
+#if defined(HAVE_SYS_TIME_H)
+# include <sys/time.h>
+#endif
+
+#if defined(HAVE_TIME_H)
+# include <time.h>
+#endif
+
+#include "ms_atomic.h"
+#include "ms_sigsegv.h"
+#include "ms_setting.h"
+#include "ms_thread.h"
+
+/* global structure */
+ms_global_t ms_global;
+
+/* global stats information structure */
+ms_stats_t ms_stats;
+
+/* global statistic structure */
+ms_statistic_t ms_statistic;
+
+#define PROGRAM_NAME "memaslap"
+#define PROGRAM_DESCRIPTION "Generates workload against memcached servers."
+
+#ifdef __sun
+/* For some odd reason the option struct on solaris defines the argument
+ * as char* and not const char*
+ */
+# define OPTIONSTRING char *
+#else
+# define OPTIONSTRING const char *
+#endif
+
+/* options */
+static struct option long_options[] = {
+ {(OPTIONSTRING) "servers", required_argument, NULL, OPT_SERVERS},
+ {(OPTIONSTRING) "threads", required_argument, NULL, OPT_THREAD_NUMBER},
+ {(OPTIONSTRING) "concurrency", required_argument, NULL, OPT_CONCURRENCY},
+ {(OPTIONSTRING) "conn_sock", required_argument, NULL, OPT_SOCK_PER_CONN},
+ {(OPTIONSTRING) "execute_number", required_argument, NULL, OPT_EXECUTE_NUMBER},
+ {(OPTIONSTRING) "time", required_argument, NULL, OPT_TIME},
+ {(OPTIONSTRING) "cfg_cmd", required_argument, NULL, OPT_CONFIG_CMD},
+ {(OPTIONSTRING) "win_size", required_argument, NULL, OPT_WINDOW_SIZE},
+ {(OPTIONSTRING) "fixed_size", required_argument, NULL, OPT_FIXED_LTH},
+ {(OPTIONSTRING) "verify", required_argument, NULL, OPT_VERIFY},
+ {(OPTIONSTRING) "division", required_argument, NULL, OPT_GETS_DIVISION},
+ {(OPTIONSTRING) "stat_freq", required_argument, NULL, OPT_STAT_FREQ},
+ {(OPTIONSTRING) "exp_verify", required_argument, NULL, OPT_EXPIRE},
+ {(OPTIONSTRING) "overwrite", required_argument, NULL, OPT_OVERWRITE},
+ {(OPTIONSTRING) "reconnect", no_argument, NULL, OPT_RECONNECT},
+ {(OPTIONSTRING) "udp", no_argument, NULL, OPT_UDP},
+ {(OPTIONSTRING) "facebook", no_argument, NULL, OPT_FACEBOOK_TEST},
+ {(OPTIONSTRING) "binary", no_argument, NULL, OPT_BINARY_PROTOCOL},
+ {(OPTIONSTRING) "tps", required_argument, NULL, OPT_TPS},
+ {(OPTIONSTRING) "rep_write", required_argument, NULL, OPT_REP_WRITE_SRV},
+ {(OPTIONSTRING) "verbose", no_argument, NULL, OPT_VERBOSE},
+ {(OPTIONSTRING) "help", no_argument, NULL, OPT_HELP},
+ {(OPTIONSTRING) "version", no_argument, NULL, OPT_VERSION},
+ {0, 0, 0, 0},
+};
+
+/* Prototypes */
+static void ms_sync_lock_init(void);
+static void ms_sync_lock_destroy(void);
+static void ms_global_struct_init(void);
+static void ms_global_struct_destroy(void);
+static void ms_version_command(const char *command_name);
+static const char *ms_lookup_help(ms_options_t option);
+static int64_t ms_parse_time(void);
+static int64_t ms_parse_size(void);
+static void ms_options_parse(int argc, char *argv[]);
+static int ms_check_para(void);
+static void ms_statistic_init(void);
+static void ms_stats_init(void);
+static void ms_print_statistics(int in_time);
+static void ms_print_memaslap_stats(struct timeval *start_time, struct timeval *end_time);
+static void ms_monitor_slap_mode(void);
+
+/**
+ * output the help information
+ *
+ * @param command_name, the string of this process
+ * @param description, description of this process
+ * @param long_options, global options array
+ */
+static void ms_help_command(const char *command_name, const char *description) {
+ char *help_message = NULL;
+
+ printf("%s v%u.%u\n", command_name, 1U, 0U);
+ printf(" %s\n\n", description);
+ printf("Usage:\n"
+ " memaslap -hV | -s servers [-F config_file] [-t time | -x exe_num] [...]\n\n"
+ "Options:\n");
+
+ for (int x = 0; long_options[x].name; x++) {
+ printf(" -%c, --%s%c\n", long_options[x].val, long_options[x].name,
+ long_options[x].has_arg ? '=' : ' ');
+
+ if ((help_message = (char *) ms_lookup_help(long_options[x].val))) {
+ printf(" %s\n", help_message);
+ }
+ }
+
+ printf("\nExamples:\n"
+ " memaslap -s 127.0.0.1:11211 -S 5s\n"
+ " memaslap -s 127.0.0.1:11211 -t 2m -v 0.2 -e 0.05 -b\n"
+ " memaslap -s 127.0.0.1:11211 -F config -t 2m -w 40k -S 20s -o 0.2\n"
+ " memaslap -s 127.0.0.1:11211 -F config -t 2m -T 4 -c 128 -d 20 -P 40k\n"
+ " memaslap -s 127.0.0.1:11211 -F config -t 2m -d 50 -a -n 40\n"
+ " memaslap -s 127.0.0.1:11211,127.0.0.1:11212 -F config -t 2m\n"
+ " memaslap -s 127.0.0.1:11211,127.0.0.1:11212 -F config -t 2m -p 2\n\n");
+} /* ms_help_command */
+
+/* initialize the global locks */
+static void ms_sync_lock_init() {
+ ms_global.init_lock.count = 0;
+ pthread_mutex_init(&ms_global.init_lock.lock, NULL);
+ pthread_cond_init(&ms_global.init_lock.cond, NULL);
+
+ ms_global.warmup_lock.count = 0;
+ pthread_mutex_init(&ms_global.warmup_lock.lock, NULL);
+ pthread_cond_init(&ms_global.warmup_lock.cond, NULL);
+
+ ms_global.run_lock.count = 0;
+ pthread_mutex_init(&ms_global.run_lock.lock, NULL);
+ pthread_cond_init(&ms_global.run_lock.cond, NULL);
+
+ pthread_mutex_init(&ms_global.quit_mutex, NULL);
+ pthread_mutex_init(&ms_global.seq_mutex, NULL);
+} /* ms_sync_lock_init */
+
+/* destroy the global locks */
+static void ms_sync_lock_destroy() {
+ pthread_mutex_destroy(&ms_global.init_lock.lock);
+ pthread_cond_destroy(&ms_global.init_lock.cond);
+
+ pthread_mutex_destroy(&ms_global.warmup_lock.lock);
+ pthread_cond_destroy(&ms_global.warmup_lock.cond);
+
+ pthread_mutex_destroy(&ms_global.run_lock.lock);
+ pthread_cond_destroy(&ms_global.run_lock.cond);
+
+ pthread_mutex_destroy(&ms_global.quit_mutex);
+ pthread_mutex_destroy(&ms_global.seq_mutex);
+
+ if (ms_setting.stat_freq > 0) {
+ pthread_mutex_destroy(&ms_statistic.stat_mutex);
+ }
+} /* ms_sync_lock_destroy */
+
+/* initialize the global structure */
+static void ms_global_struct_init() {
+ ms_sync_lock_init();
+ ms_global.finish_warmup = false;
+ ms_global.time_out = false;
+}
+
+/* destroy the global structure */
+static void ms_global_struct_destroy() {
+ ms_sync_lock_destroy();
+}
+
+/**
+ * output the version information
+ *
+ * @param command_name, the string of this process
+ */
+static void ms_version_command(const char *command_name) {
+ printf("%s v%u.%u\n", command_name, 1U, 0U);
+ exit(0);
+}
+
+/**
+ * get the description of the option
+ *
+ * @param option, option of command line
+ *
+ * @return char*, description of the command option
+ */
+static const char *ms_lookup_help(ms_options_t option) {
+ switch (option) {
+ case OPT_SERVERS:
+ return "List one or more servers to connect. Servers count must be less than\n"
+ " threads count. e.g.: --servers=localhost:1234,localhost:11211";
+
+ case OPT_VERSION:
+ return "Display the version of the application and then exit.";
+
+ case OPT_HELP:
+ return "Display this message and then exit.";
+
+ case OPT_EXECUTE_NUMBER:
+ return "Number of operations(get and set) to execute for the\n"
+ " given test. Default 1000000.";
+
+ case OPT_THREAD_NUMBER:
+ return "Number of threads to startup, better equal to CPU numbers. Default 8.";
+
+ case OPT_CONCURRENCY:
+ return "Number of concurrency to simulate with load. Default 128.";
+
+ case OPT_FIXED_LTH:
+ return "Fixed length of value.";
+
+ case OPT_VERIFY:
+ return "The proportion of date verification, e.g.: --verify=0.01";
+
+ case OPT_GETS_DIVISION:
+ return "Number of keys to multi-get once. Default 1, means single get.";
+
+ case OPT_TIME:
+ return "How long the test to run, suffix: s-seconds, m-minutes, h-hours,\n"
+ " d-days e.g.: --time=2h.";
+
+ case OPT_CONFIG_CMD:
+ return "Load the configure file to get command,key and value distribution list.";
+
+ case OPT_WINDOW_SIZE:
+ return "Task window size of each concurrency, suffix: K, M e.g.: --win_size=10k.\n"
+ " Default 10k.";
+
+ case OPT_UDP:
+ return "UDP support, by default memaslap uses TCP; TCP port and UDP port of\n"
+ " server must be same.";
+
+ case OPT_EXPIRE:
+ return "The proportion of objects with expire time, e.g.: --exp_verify=0.01.\n"
+ " Default no object with expire time";
+
+ case OPT_OVERWRITE:
+ return "The proportion of objects need overwrite, e.g.: --overwrite=0.01.\n"
+ " Default never overwrite object.";
+
+ case OPT_STAT_FREQ:
+ return "Frequency of dumping statistic information. suffix: s-seconds,\n"
+ " m-minutes, e.g.: --resp_freq=10s.";
+
+ case OPT_SOCK_PER_CONN:
+ return "Number of TCP socks per concurrency. Default 1.";
+
+ case OPT_RECONNECT:
+ return "Reconnect support, when connection is closed it will be reconnected.";
+
+ case OPT_VERBOSE:
+ return "Whether it outputs detailed information when verification fails.";
+
+ case OPT_FACEBOOK_TEST:
+ return "Whether it enables facebook test feature, set with TCP and multi-get with UDP.";
+
+ case OPT_BINARY_PROTOCOL:
+ return "Whether it enables binary protocol. Default with ASCII protocol.";
+
+ case OPT_TPS:
+ return "Expected throughput, suffix: K, e.g.: --tps=10k.";
+
+ case OPT_REP_WRITE_SRV:
+ return "The first nth servers can write data, e.g.: --rep_write=2.";
+
+ default:
+ return "Forgot to document this option :)";
+ } /* switch */
+} /* ms_lookup_help */
+
+/* used to parse the time string */
+static int64_t ms_parse_time() {
+ int64_t ret = 0;
+ char unit = optarg[strlen(optarg) - 1];
+
+ optarg[strlen(optarg) - 1] = '\0';
+ ret = atoi(optarg);
+
+ switch (unit) {
+ case 'd':
+ case 'D':
+ ret *= 24;
+ /* fall through */
+ case 'h':
+ case 'H':
+ ret *= 60;
+ /* fall through */
+ case 'm':
+ case 'M':
+ ret *= 60;
+ /* fall through */
+ case 's':
+ case 'S':
+ break;
+
+ default:
+ ret = -1;
+ break;
+ } /* switch */
+
+ return ret;
+} /* ms_parse_time */
+
+/* used to parse the size string */
+static int64_t ms_parse_size() {
+ int64_t ret = -1;
+ char unit = optarg[strlen(optarg) - 1];
+
+ optarg[strlen(optarg) - 1] = '\0';
+ errno = 0;
+ ret = strtoll(optarg, (char **) NULL, 10);
+ if (errno) {
+ fprintf(stderr, "strtoll(optarg,..): %s\n", strerror(errno));
+ exit(1);
+ }
+
+ switch (unit) {
+ case 'k':
+ case 'K':
+ ret *= 1024;
+ break;
+
+ case 'm':
+ case 'M':
+ ret *= 1024 * 1024;
+ break;
+
+ case 'g':
+ case 'G':
+ ret *= 1024 * 1024 * 1024;
+ break;
+
+ default:
+ ret = -1;
+ break;
+ } /* switch */
+
+ return ret;
+} /* ms_parse_size */
+
+/* used to parse the options of command line */
+static void ms_options_parse(int argc, char *argv[]) {
+ int option_index = 0;
+ int option_rv;
+
+ while ((option_rv = getopt_long(argc, argv,
+ "VhURbaBs:x:T:c:X:v:d:"
+ "t:S:F:w:e:o:n:P:p:",
+ long_options, &option_index))
+ != -1)
+ {
+ switch (option_rv) {
+ case 0:
+ break;
+
+ case OPT_VERSION: /* --version or -V */
+ ms_version_command(PROGRAM_NAME);
+ break;
+
+ case OPT_HELP: /* --help or -h */
+ ms_help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION);
+ exit(0);
+ break;
+
+ case OPT_SERVERS: /* --servers or -s */
+ ms_setting.srv_str = strdup(optarg);
+ break;
+
+ case OPT_CONCURRENCY: /* --concurrency or -c */
+ errno = 0;
+ ms_setting.nconns = (uint32_t) strtoul(optarg, (char **) NULL, 10);
+ if (ms_setting.nconns <= 0 || errno) {
+ fprintf(stderr, "Concurrency must be greater than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_EXECUTE_NUMBER: /* --execute_number or -x */
+ errno = 0;
+ ms_setting.exec_num = (int) strtol(optarg, (char **) NULL, 10);
+ if (ms_setting.exec_num <= 0 || errno) {
+ fprintf(stderr, "Execute number must be greater than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_THREAD_NUMBER: /* --threads or -T */
+ errno = 0;
+ ms_setting.nthreads = (uint32_t) strtoul(optarg, (char **) NULL, 10);
+ if (ms_setting.nthreads <= 0 || errno) {
+ fprintf(stderr, "Threads number must be greater than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_FIXED_LTH: /* --fixed_size or -X */
+ errno = 0;
+ ms_setting.fixed_value_size = (size_t) strtoull(optarg, (char **) NULL, 10);
+ if ((ms_setting.fixed_value_size <= 0 || errno)
+ || (ms_setting.fixed_value_size > MAX_VALUE_SIZE))
+ {
+ fprintf(stderr, "Value size must be between 0 and 1M.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_VERIFY: /* --verify or -v */
+ ms_setting.verify_percent = atof(optarg);
+ if ((ms_setting.verify_percent <= 0) || (ms_setting.verify_percent > 1.0)) {
+ fprintf(stderr,
+ "Data verification rate must be "
+ "greater than 0 and less than 1.0. :-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_GETS_DIVISION: /* --division or -d */
+ errno = 0;
+ ms_setting.mult_key_num = (int) strtol(optarg, (char **) NULL, 10);
+ if (ms_setting.mult_key_num <= 0 || errno) {
+ fprintf(stderr, "Multi-get key number must be greater than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_TIME: /* --time or -t */
+ ms_setting.run_time = (int) ms_parse_time();
+ if (ms_setting.run_time == -1) {
+ fprintf(stderr,
+ "Please specify the run time. :-)\n"
+ "'s' for second, 'm' for minute, 'h' for hour, "
+ "'d' for day. e.g.: --time=24h (means 24 hours).\n");
+ exit(1);
+ }
+
+ if (ms_setting.run_time == 0) {
+ fprintf(stderr, "Running time can not be 0. :-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_CONFIG_CMD: /* --cfg_cmd or -F */
+ ms_setting.cfg_file = strdup(optarg);
+ break;
+
+ case OPT_WINDOW_SIZE: /* --win_size or -w */
+ ms_setting.win_size = (size_t) ms_parse_size();
+ if (ms_setting.win_size == (size_t) -1) {
+ fprintf(stderr,
+ "Please specify the item window size. :-)\n"
+ "e.g.: --win_size=10k (means 10k task window size).\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_UDP: /* --udp or -U*/
+ ms_setting.udp = true;
+ break;
+
+ case OPT_EXPIRE: /* --exp_verify or -e */
+ ms_setting.exp_ver_per = atof(optarg);
+ if ((ms_setting.exp_ver_per <= 0) || (ms_setting.exp_ver_per > 1.0)) {
+ fprintf(stderr,
+ "Expire time verification rate must be "
+ "greater than 0 and less than 1.0. :-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_OVERWRITE: /* --overwrite or -o */
+ ms_setting.overwrite_percent = atof(optarg);
+ if ((ms_setting.overwrite_percent <= 0) || (ms_setting.overwrite_percent > 1.0)) {
+ fprintf(stderr,
+ "Objects overwrite rate must be "
+ "greater than 0 and less than 1.0. :-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_STAT_FREQ: /* --stat_freq or -S */
+ ms_setting.stat_freq = (int) ms_parse_time();
+ if (ms_setting.stat_freq == -1) {
+ fprintf(stderr,
+ "Please specify the frequency of dumping "
+ "statistic information. :-)\n"
+ "'s' for second, 'm' for minute, 'h' for hour, "
+ "'d' for day. e.g.: --time=24h (means 24 hours).\n");
+ exit(1);
+ }
+
+ if (ms_setting.stat_freq == 0) {
+ fprintf(stderr,
+ "The frequency of dumping statistic information "
+ "can not be 0. :-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_SOCK_PER_CONN: /* --conn_sock or -n */
+ errno = 0;
+ ms_setting.sock_per_conn = (uint32_t) strtoul(optarg, (char **) NULL, 10);
+ if (ms_setting.sock_per_conn <= 0 || errno) {
+ fprintf(stderr,
+ "Number of socks of each concurrency "
+ "must be greater than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_RECONNECT: /* --reconnect or -R */
+ ms_setting.reconnect = true;
+ break;
+
+ case OPT_VERBOSE: /* --verbose or -b */
+ ms_setting.verbose = true;
+ break;
+
+ case OPT_FACEBOOK_TEST: /* --facebook or -a */
+ ms_setting.facebook_test = true;
+ break;
+
+ case OPT_BINARY_PROTOCOL: /* --binary or -B */
+ ms_setting.binary_prot_ = true;
+ break;
+
+ case OPT_TPS: /* --tps or -P */
+ ms_setting.expected_tps = (int) ms_parse_size();
+ if (ms_setting.expected_tps == -1) {
+ fprintf(stderr,
+ "Please specify the item expected throughput. :-)\n"
+ "e.g.: --tps=10k (means 10k throughput).\n");
+ exit(1);
+ }
+ break;
+
+ case OPT_REP_WRITE_SRV: /* --rep_write or -p */
+ errno = 0;
+ ms_setting.rep_write_srv = (uint32_t) strtoul(optarg, (char **) NULL, 10);
+ if (ms_setting.rep_write_srv <= 0 || errno) {
+ fprintf(stderr,
+ "Number of replication writing server must be greater "
+ "than 0.:-)\n");
+ exit(1);
+ }
+ break;
+
+ case '?':
+ /* getopt_long already printed an error message. */
+ exit(1);
+
+ default:
+ abort();
+ } /* switch */
+ }
+} /* ms_options_parse */
+
+static int ms_check_para() {
+ if (ms_setting.srv_str == NULL) {
+ char *temp;
+
+ if ((temp = getenv("MEMCACHED_SERVERS"))) {
+ ms_setting.srv_str = strdup(temp);
+ } else {
+ fprintf(stderr, "No servers provided\n\n");
+ return -1;
+ }
+ }
+
+ if (ms_setting.nconns % (uint32_t) ms_setting.nthreads) {
+ fprintf(stderr, "Concurrency must be the multiples of threads count.\n");
+ return -1;
+ }
+
+ if (ms_setting.win_size % UNIT_ITEMS_COUNT) {
+ fprintf(stderr, "Window size must be the multiples of 1024.\n\n");
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_check_para */
+
+/* initialize the statistic structure */
+static void ms_statistic_init() {
+ pthread_mutex_init(&ms_statistic.stat_mutex, NULL);
+ ms_init_stats(&ms_statistic.get_stat, "Get");
+ ms_init_stats(&ms_statistic.set_stat, "Set");
+ ms_init_stats(&ms_statistic.total_stat, "Total");
+} /* ms_statistic_init */
+
+/* initialize the global state structure */
+static void ms_stats_init() {
+ memset(&ms_stats, 0, sizeof(ms_stats_t));
+ if (ms_setting.stat_freq > 0) {
+ ms_statistic_init();
+ }
+} /* ms_stats_init */
+
+/* use to output the statistic */
+static void ms_print_statistics(int in_time) {
+ int obj_size = (int) (ms_setting.avg_key_size + ms_setting.avg_val_size);
+
+ printf("\033[1;1H\033[2J\n");
+ ms_dump_format_stats(&ms_statistic.get_stat, in_time, ms_setting.stat_freq, obj_size);
+ ms_dump_format_stats(&ms_statistic.set_stat, in_time, ms_setting.stat_freq, obj_size);
+ ms_dump_format_stats(&ms_statistic.total_stat, in_time, ms_setting.stat_freq, obj_size);
+} /* ms_print_statistics */
+
+/* used to print the states of memaslap */
+static void ms_print_memaslap_stats(struct timeval *start_time, struct timeval *end_time) {
+ char buf[0x2000];
+ char *pos = buf;
+
+ pos += snprintf(pos, sizeof(buf), "cmd_get: %lu\n", (unsigned long) ms_stats.cmd_get);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "cmd_set: %lu\n",
+ (unsigned long) ms_stats.cmd_set);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "get_misses: %lu\n",
+ (unsigned long) ms_stats.get_misses);
+
+ if (ms_setting.verify_percent > 0) {
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "verify_misses: %lu\n",
+ (unsigned long) ms_stats.vef_miss);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "verify_failed: %lu\n",
+ (unsigned long) ms_stats.vef_failed);
+ }
+
+ if (ms_setting.exp_ver_per > 0) {
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "expired_get: %lu\n",
+ (unsigned long) ms_stats.exp_get);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "unexpired_unget: %lu\n",
+ (unsigned long) ms_stats.unexp_unget);
+ }
+
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "written_bytes: %lu\n",
+ (unsigned long) ms_stats.bytes_written);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "read_bytes: %lu\n",
+ (unsigned long) ms_stats.bytes_read);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "object_bytes: %lu\n",
+ (unsigned long) ms_stats.obj_bytes);
+
+ if (ms_setting.udp || ms_setting.facebook_test) {
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "packet_disorder: %lu\n",
+ (unsigned long) ms_stats.pkt_disorder);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "packet_drop: %lu\n",
+ (unsigned long) ms_stats.pkt_drop);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "udp_timeout: %lu\n",
+ (unsigned long) ms_stats.udp_timeout);
+ }
+
+ if (ms_setting.stat_freq > 0) {
+ ms_dump_stats(&ms_statistic.get_stat);
+ ms_dump_stats(&ms_statistic.set_stat);
+ ms_dump_stats(&ms_statistic.total_stat);
+ }
+
+ int64_t time_diff = ms_time_diff(start_time, end_time);
+ pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf),
+ "\nRun time: %.1fs Ops: %llu TPS: %.0Lf Net_rate: %.1fM/s\n",
+ (double) time_diff / 1000000,
+ (unsigned long long) (ms_stats.cmd_get + ms_stats.cmd_set),
+ (ms_stats.cmd_get + ms_stats.cmd_set) / ((long double) time_diff / 1000000),
+ (double) (ms_stats.bytes_written + ms_stats.bytes_read) / 1024 / 1024
+ / ((double) time_diff / 1000000));
+ assert(pos <= (buf + sizeof(buf)));
+
+ fwrite(buf, 1, pos - buf, stdout);
+ fflush(stdout);
+} /* ms_print_memaslap_stats */
+
+/* the loop of the main thread, wait the work threads to complete */
+static void ms_monitor_slap_mode() {
+ struct timeval start_time, end_time;
+
+ /* Wait all the threads complete initialization. */
+ pthread_mutex_lock(&ms_global.init_lock.lock);
+ while (ms_global.init_lock.count < ms_setting.nthreads) {
+ pthread_cond_wait(&ms_global.init_lock.cond, &ms_global.init_lock.lock);
+ }
+ pthread_mutex_unlock(&ms_global.init_lock.lock);
+
+ /* only when there is no set operation it need warm up */
+ if (ms_setting.cmd_distr[CMD_SET].cmd_prop < PROP_ERROR) {
+ /* Wait all the connects complete warm up. */
+ pthread_mutex_lock(&ms_global.warmup_lock.lock);
+ while (ms_global.warmup_lock.count < ms_setting.nconns) {
+ pthread_cond_wait(&ms_global.warmup_lock.cond, &ms_global.warmup_lock.lock);
+ }
+ pthread_mutex_unlock(&ms_global.warmup_lock.lock);
+ }
+ ms_global.finish_warmup = true;
+
+ /* running in "run time" mode, user specify run time */
+ if (ms_setting.run_time > 0) {
+ int second = 0;
+ gettimeofday(&start_time, NULL);
+ while (1) {
+ sleep(1);
+ second++;
+
+ if ((ms_setting.stat_freq > 0) && (second % ms_setting.stat_freq == 0)
+ && (ms_stats.active_conns >= ms_setting.nconns) && (ms_stats.active_conns <= INT_MAX))
+ {
+ ms_print_statistics(second);
+ }
+
+ if (ms_setting.run_time <= second) {
+ ms_global.time_out = true;
+ break;
+ }
+
+ /* all connections disconnect */
+ if ((second > 5) && (ms_stats.active_conns == 0)) {
+ break;
+ }
+ }
+ gettimeofday(&end_time, NULL);
+ sleep(1); /* wait all threads clean up */
+ } else {
+ /* running in "execute number" mode, user specify execute number */
+ gettimeofday(&start_time, NULL);
+
+ /*
+ * We loop until we know that all connects have cleaned up.
+ */
+ pthread_mutex_lock(&ms_global.run_lock.lock);
+ while (ms_global.run_lock.count < ms_setting.nconns) {
+ pthread_cond_wait(&ms_global.run_lock.cond, &ms_global.run_lock.lock);
+ }
+ pthread_mutex_unlock(&ms_global.run_lock.lock);
+
+ gettimeofday(&end_time, NULL);
+ }
+
+ ms_print_memaslap_stats(&start_time, &end_time);
+} /* ms_monitor_slap_mode */
+
+/* the main function */
+int main(int argc, char *argv[]) {
+ srandom((unsigned int) time(NULL));
+ ms_global_struct_init();
+
+ /* initialization */
+ ms_setting_init_pre();
+ ms_options_parse(argc, argv);
+ if (ms_check_para()) {
+ ms_help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION);
+ exit(1);
+ }
+ ms_setting_init_post();
+ ms_stats_init();
+ ms_thread_init();
+
+ /* waiting work thread complete its task */
+ ms_monitor_slap_mode();
+
+ /* clean up */
+ ms_thread_cleanup();
+ ms_global_struct_destroy();
+ ms_setting_cleanup();
+
+ return EXIT_SUCCESS;
+} /* main */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_MEMSLAP_H
+#define MS_MEMSLAP_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <pthread.h>
+#if !defined(__cplusplus)
+# include <stdbool.h>
+#endif
+#include <math.h>
+
+#include "ms_stats.h"
+#include "ms_atomic.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* command line option */
+typedef enum {
+ OPT_VERSION = 'V',
+ OPT_HELP = 'h',
+ OPT_UDP = 'U',
+ OPT_SERVERS = 's',
+ OPT_EXECUTE_NUMBER = 'x',
+ OPT_THREAD_NUMBER = 'T',
+ OPT_CONCURRENCY = 'c',
+ OPT_FIXED_LTH = 'X',
+ OPT_VERIFY = 'v',
+ OPT_GETS_DIVISION = 'd',
+ OPT_TIME = 't',
+ OPT_CONFIG_CMD = 'F',
+ OPT_WINDOW_SIZE = 'w',
+ OPT_EXPIRE = 'e',
+ OPT_STAT_FREQ = 'S',
+ OPT_RECONNECT = 'R',
+ OPT_VERBOSE = 'b',
+ OPT_FACEBOOK_TEST = 'a',
+ OPT_SOCK_PER_CONN = 'n',
+ OPT_BINARY_PROTOCOL = 'B',
+ OPT_OVERWRITE = 'o',
+ OPT_TPS = 'P',
+ OPT_REP_WRITE_SRV = 'p'
+} ms_options_t;
+
+/* global statistic of response time */
+typedef struct statistic {
+ pthread_mutex_t stat_mutex; /* synchronize the following members */
+
+ ms_stat_t get_stat; /* statistics of get command */
+ ms_stat_t set_stat; /* statistics of set command */
+ ms_stat_t total_stat; /* statistics of both get and set commands */
+} ms_statistic_t;
+
+/* global status statistic structure */
+typedef struct stats {
+ ATOMIC uint32_t active_conns; /* active connections */
+ ATOMIC size_t bytes_read; /* read bytes */
+ ATOMIC size_t bytes_written; /* written bytes */
+ ATOMIC size_t obj_bytes; /* object bytes */
+ ATOMIC size_t pre_cmd_get; /* previous total get command count */
+ ATOMIC size_t pre_cmd_set; /* previous total set command count */
+ ATOMIC size_t cmd_get; /* current total get command count */
+ ATOMIC size_t cmd_set; /* current total set command count */
+ ATOMIC size_t get_misses; /* total objects of get miss */
+ ATOMIC size_t vef_miss; /* total objects of verification miss */
+ ATOMIC size_t vef_failed; /* total objects of verification failed */
+ ATOMIC size_t unexp_unget; /* total objects which is unexpired but not get */
+ ATOMIC size_t exp_get; /* total objects which is expired but get */
+ ATOMIC size_t pkt_disorder; /* disorder packages of UDP */
+ ATOMIC size_t pkt_drop; /* packages dropped of UDP */
+ ATOMIC size_t udp_timeout; /* how many times timeout of UDP happens */
+} ms_stats_t;
+
+/* lock adapter */
+typedef struct sync_lock {
+ uint32_t count;
+ pthread_mutex_t lock;
+ pthread_cond_t cond;
+} ms_sync_lock_t;
+
+/* global variable structure */
+typedef struct global {
+ /* synchronize lock */
+ ms_sync_lock_t init_lock;
+ ms_sync_lock_t warmup_lock;
+ ms_sync_lock_t run_lock;
+
+ /* mutex for outputing error log synchronously when memslap crashes */
+ pthread_mutex_t quit_mutex;
+
+ /* mutex for generating key prefix */
+ pthread_mutex_t seq_mutex;
+
+ /* global synchronous flags for slap mode */
+ bool finish_warmup;
+ bool time_out;
+} ms_global_t;
+
+/* global structure */
+extern ms_global_t ms_global;
+
+/* global stats information structure */
+extern ms_stats_t ms_stats;
+
+/* global statistic structure */
+extern ms_statistic_t ms_statistic;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_MEMSLAP_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#include "libmemcached/memcached.h"
+
+#include <ctype.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <pwd.h>
+#include <strings.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "ms_setting.h"
+#include "ms_conn.h"
+
+#define MAX_EXEC_NUM 0x4000000000000000 /* 1 << 62 */
+#define ADDR_ALIGN(addr) ((addr + 15) & ~(16 - 1)) /* 16 bytes aligned */
+#define RAND_CHAR_SIZE (10 * 1024 * 1024) /* 10M character table */
+#define RESERVED_RAND_CHAR_SIZE (2 * 1024 * 1024) /* reserved 2M to avoid pointer sloping over */
+
+#define DEFAULT_CONFIG_NAME ".memslap.cnf"
+
+#define DEFAULT_THREADS_NUM 1 /* default start one thread */
+#define DEFAULT_CONNS_NUM 16 /* default each thread with 16 connections */
+#define DEFAULT_EXE_NUM 0 /* default execute number is 0 */
+#define DEFAULT_VERIFY_RATE 0.0 /* default it doesn't do data verification */
+#define DEFAULT_OVERWRITE_RATE 0.0 /* default it doesn't do overwrite */
+#define DEFAULT_DIV 1 /* default it runs single get */
+#define DEFAULT_RUN_TIME 600 /* default run time 10 minutes */
+#define DEFAULT_WINDOW_SIZE (10 * UNIT_ITEMS_COUNT) /* default window size is 10k */
+#define DEFAULT_SOCK_PER_CONN 1 /* default socks per connection is 1 */
+
+/* Use this for string generation */
+#define CHAR_COUNT 64 /* number of characters used to generate character table */
+const char ALPHANUMBERICS[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-";
+
+ms_setting_st ms_setting; /* store the settings specified by user */
+
+/* read setting from configuration file */
+static void ms_get_serverlist(char *str);
+static uint32_t ms_get_cpu_count(void);
+ms_conf_type_t ms_get_conf_type(char *line);
+static int ms_is_line_data(char *line);
+static int ms_read_is_data(char *line, ssize_t nread);
+static void ms_no_config_file(void);
+static void ms_parse_cfg_file(char *cfg_file);
+
+/* initialize setting structure */
+static void ms_init_random_block(void);
+static void ms_calc_avg_size(void);
+static int ms_shuffle_distr(ms_distr_t *distr, int length);
+static void ms_build_distr(void);
+static void ms_print_setting(void);
+static void ms_setting_slapmode_init_pre(void);
+static void ms_setting_slapmode_init_post(void);
+
+#if !defined(HAVE_GETLINE)
+# include <limits.h>
+static ssize_t getline(char **line, size_t *line_size, FILE *fp) {
+ char delim = '\n';
+ ssize_t result = 0;
+ size_t cur_len = 0;
+
+ if (line == NULL || line_size == NULL || fp == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (*line == NULL || *line_size == 0) {
+ char *new_line;
+ *line_size = 120;
+ new_line = (char *) realloc(*line, *line_size);
+ if (new_line == NULL) {
+ result = -1;
+ return result;
+ }
+ *line = new_line;
+ }
+
+ for (;;) {
+ int i = getc(fp);
+ if (i == EOF) {
+ result = -1;
+ break;
+ }
+
+ /* Make enough space for len+1 (for final NUL) bytes. */
+ if (cur_len + 1 >= *line_size) {
+ size_t needed_max = SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
+ size_t needed = (2 * (*line_size)) + 1;
+ char *new_line;
+
+ if (needed_max < needed)
+ needed = needed_max;
+ if (cur_len + 1 >= needed) {
+ result = -1;
+ errno = EOVERFLOW;
+ return result;
+ }
+
+ new_line = (char *) realloc(*line, needed);
+ if (new_line == NULL) {
+ result = -1;
+ return result;
+ }
+
+ *line = new_line;
+ *line_size = needed;
+ }
+
+ (*line)[cur_len] = (char) i;
+ cur_len++;
+
+ if (i == delim)
+ break;
+ }
+ (*line)[cur_len] = '\0';
+ if (cur_len)
+ return (ssize_t) cur_len;
+ return result;
+}
+#endif
+
+/**
+ * parse the server list string, and build the servers
+ * information structure array. this function is used to parse
+ * the command line options specified by user.
+ *
+ * @param str, the string of server list
+ */
+static void ms_get_serverlist(char *str) {
+ ms_mcd_server_t *srvs = NULL;
+
+ /**
+ * Servers list format is like this. For example:
+ * "localhost:11108, localhost:11109"
+ */
+ memcached_server_st *server_pool;
+ server_pool = memcached_servers_parse(str);
+
+ for (uint32_t loop = 0; loop < memcached_server_list_count(server_pool); loop++) {
+ assert(ms_setting.srv_cnt < ms_setting.total_srv_cnt);
+ strcpy(ms_setting.servers[ms_setting.srv_cnt].srv_host_name, server_pool[loop].hostname);
+ ms_setting.servers[ms_setting.srv_cnt].srv_port = server_pool[loop].port;
+ ms_setting.servers[ms_setting.srv_cnt].disconn_cnt = 0;
+ ms_setting.servers[ms_setting.srv_cnt].reconn_cnt = 0;
+ ms_setting.srv_cnt++;
+
+ if (ms_setting.srv_cnt >= ms_setting.total_srv_cnt) {
+ srvs = (ms_mcd_server_t *) realloc(
+ ms_setting.servers, (size_t) ms_setting.total_srv_cnt * sizeof(ms_mcd_server_t) * 2);
+ if (srvs == NULL) {
+ fprintf(stderr, "Can't reallocate servers structure.\n");
+ exit(1);
+ }
+ ms_setting.servers = srvs;
+ ms_setting.total_srv_cnt *= 2;
+ }
+ }
+
+ memcached_server_free(server_pool);
+} /* ms_get_serverlist */
+
+/**
+ * used to get the CPU count of the current system
+ *
+ * @return return the cpu count if get, else return EXIT_FAILURE
+ */
+static uint32_t ms_get_cpu_count() {
+#ifdef HAVE__SC_NPROCESSORS_ONLN
+ return sysconf(_SC_NPROCESSORS_CONF);
+
+#else
+# ifdef HAVE_CPU_SET_T
+ int cpu_count = 0;
+ cpu_set_t cpu_set;
+
+ sched_getaffinity(0, sizeof(cpu_set_t), &cpu_set);
+
+ for (int i = 0; i < (sizeof(cpu_set_t) * 8); i++) {
+ if (CPU_ISSET(i, &cpu_set)) {
+ cpu_count++;
+ }
+ }
+
+ return cpu_count;
+
+# endif
+#endif
+
+ /* the system with one cpu at least */
+ return EXIT_FAILURE;
+} /* ms_get_cpu_count */
+
+/**
+ * used to get the configure type based on the type string read
+ * from the configuration file.
+ *
+ * @param line, string of one line
+ *
+ * @return ms_conf_type_t
+ */
+ms_conf_type_t ms_get_conf_type(char *line) {
+ if (!memcmp(line, "key", strlen("key"))) {
+ return CONF_KEY;
+ } else if (!memcmp(line, "value", strlen("value"))) {
+ return CONF_VALUE;
+ } else if (!memcmp(line, "cmd", strlen("cmd"))) {
+ return CONF_CMD;
+ } else {
+ return CONF_NULL;
+ }
+} /* ms_get_conf_type */
+
+/**
+ * judge whether the line is a line with useful data. used to
+ * parse the configuration file.
+ *
+ * @param line, string of one line
+ *
+ * @return if success, return EXIT_FAILURE, else return EXIT_SUCCESS
+ */
+static int ms_is_line_data(char *line) {
+ assert(line);
+
+ char *begin_ptr = line;
+
+ while (isspace(*begin_ptr)) {
+ begin_ptr++;
+ }
+ if ((begin_ptr[0] == '\0') || (begin_ptr[0] == '#'))
+ return EXIT_SUCCESS;
+
+ return EXIT_FAILURE;
+} /* ms_is_line_data */
+
+/**
+ * function to bypass blank line and comments
+ *
+ * @param line, string of one line
+ * @param nread, length of the line
+ *
+ * @return if it's EOF or not line data, return EXIT_SUCCESS, else return EXIT_FAILURE
+ */
+static int ms_read_is_data(char *line, ssize_t nread) {
+ if ((nread == EOF) || !ms_is_line_data(line))
+ return EXIT_SUCCESS;
+
+ return EXIT_FAILURE;
+} /* ms_read_is_data */
+
+/**
+ * if no configuration file, use this function to create the default
+ * configuration file.
+ */
+static void ms_no_config_file() {
+ char userpath[PATH_MAX];
+ struct passwd *usr = NULL;
+ FILE *fd;
+
+ usr = getpwuid(getuid());
+
+ snprintf(userpath, PATH_MAX, "%s/%s", usr->pw_dir, DEFAULT_CONFIG_NAME);
+
+ if (access(userpath, F_OK | R_OK) == 0)
+ goto exit;
+
+ fd = fopen(userpath, "w+");
+
+ if (fd == NULL) {
+ fprintf(stderr, "Could not create default configure file %s\n", userpath);
+ perror("fopen");
+ exit(1);
+ }
+ fprintf(fd, "%s", DEFAULT_CONGIF_STR);
+ fclose(fd);
+
+exit:
+ ms_setting.cfg_file = strdup(userpath);
+} /* ms_no_config_file */
+
+/**
+ * parse the configuration file
+ *
+ * @param cfg_file, the configuration file name
+ */
+static void ms_parse_cfg_file(char *cfg_file) {
+ FILE *f;
+ size_t start_len, end_len;
+ double proportion;
+ char *line = NULL;
+ size_t read_len;
+ ssize_t nread;
+ int cmd_type;
+ ms_conf_type_t conf_type;
+ int end_of_file = 0;
+ ms_key_distr_t *key_distr = NULL;
+ ms_value_distr_t *val_distr = NULL;
+
+ if (cfg_file == NULL) {
+ ms_no_config_file();
+ cfg_file = ms_setting.cfg_file;
+ }
+
+ /*read key value configure file*/
+ if ((f = fopen(cfg_file, "r")) == NULL) {
+ fprintf(stderr, "Can not open file: '%s'.\n", cfg_file);
+ exit(1);
+ }
+
+ while (1) {
+ if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
+ && (nread != EOF)) /* bypass blank line */
+ continue;
+
+ if (nread == EOF) {
+ fprintf(stderr, "Bad configuration file, no configuration find.\n");
+ exit(1);
+ }
+ conf_type = ms_get_conf_type(line);
+ break;
+ }
+
+ while (!end_of_file) {
+ switch (conf_type) {
+ case CONF_KEY:
+ while (1) {
+ if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
+ && (nread != EOF)) /* bypass blank line */
+ continue;
+
+ if (nread != EOF) {
+ if (sscanf(line, "%zu %zu %lf ", &start_len, &end_len, &proportion) != 3) {
+ conf_type = ms_get_conf_type(line);
+ break;
+ }
+ ms_setting.key_distr[ms_setting.key_rng_cnt].start_len = start_len;
+ ms_setting.key_distr[ms_setting.key_rng_cnt].end_len = end_len;
+ ms_setting.key_distr[ms_setting.key_rng_cnt].key_prop = proportion;
+ ms_setting.key_rng_cnt++;
+
+ if (ms_setting.key_rng_cnt >= ms_setting.total_key_rng_cnt) {
+ key_distr = (ms_key_distr_t *) realloc(ms_setting.key_distr,
+ (size_t) ms_setting.total_key_rng_cnt
+ * sizeof(ms_key_distr_t) * 2);
+ if (key_distr == NULL) {
+ fprintf(stderr, "Can't reallocate key distribution structure.\n");
+ exit(1);
+ }
+ ms_setting.key_distr = key_distr;
+ ms_setting.total_key_rng_cnt *= 2;
+ }
+ continue;
+ }
+ end_of_file = 1;
+ break;
+ }
+ break;
+
+ case CONF_VALUE:
+ while (1) {
+ if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
+ && (nread != EOF)) /* bypass blank line */
+ continue;
+
+ if (nread != EOF) {
+ if (sscanf(line, "%zu %zu %lf", &start_len, &end_len, &proportion) != 3) {
+ conf_type = ms_get_conf_type(line);
+ break;
+ }
+ ms_setting.value_distr[ms_setting.val_rng_cnt].start_len = start_len;
+ ms_setting.value_distr[ms_setting.val_rng_cnt].end_len = end_len;
+ ms_setting.value_distr[ms_setting.val_rng_cnt].value_prop = proportion;
+ ms_setting.val_rng_cnt++;
+
+ if (ms_setting.val_rng_cnt >= ms_setting.total_val_rng_cnt) {
+ val_distr = (ms_value_distr_t *) realloc(ms_setting.value_distr,
+ (size_t) ms_setting.total_val_rng_cnt
+ * sizeof(ms_value_distr_t) * 2);
+ if (val_distr == NULL) {
+ fprintf(stderr, "Can't reallocate key distribution structure.\n");
+ exit(1);
+ }
+ ms_setting.value_distr = val_distr;
+ ms_setting.total_val_rng_cnt *= 2;
+ }
+ continue;
+ }
+ end_of_file = 1;
+ break;
+ }
+ break;
+
+ case CONF_CMD:
+ while (1) {
+ if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
+ && (nread != EOF)) /* bypass blank line */
+ continue;
+
+ if (nread != EOF) {
+ if (sscanf(line, "%d %lf", &cmd_type, &proportion) != 2) {
+ conf_type = ms_get_conf_type(line);
+ break;
+ }
+ if (cmd_type >= CMD_NULL) {
+ continue;
+ }
+ ms_setting.cmd_distr[ms_setting.cmd_used_count].cmd_type = cmd_type;
+ ms_setting.cmd_distr[ms_setting.cmd_used_count].cmd_prop = proportion;
+ ms_setting.cmd_used_count++;
+ continue;
+ }
+ end_of_file = 1;
+ break;
+ }
+
+ case CONF_NULL:
+ while (1) {
+ if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
+ && (nread != EOF)) /* bypass blank line */
+ continue;
+
+ if (nread != EOF) {
+ if ((conf_type = ms_get_conf_type(line)) != CONF_NULL) {
+ break;
+ }
+ continue;
+ }
+ end_of_file = 1;
+ break;
+ }
+ break;
+
+ default:
+ assert(0);
+ break;
+ } /* switch */
+ }
+
+ fclose(f);
+
+ if (line) {
+ free(line);
+ }
+} /* ms_parse_cfg_file */
+
+/* calculate the average size of key and value */
+static void ms_calc_avg_size() {
+ double avg_val_size = 0.0;
+ double avg_key_size = 0.0;
+ double val_pro = 0.0;
+ double key_pro = 0.0;
+ double averge_len = 0.0;
+ size_t start_len = 0;
+ size_t end_len = 0;
+
+ for (int j = 0; j < ms_setting.val_rng_cnt; j++) {
+ val_pro = ms_setting.value_distr[j].value_prop;
+ start_len = ms_setting.value_distr[j].start_len;
+ end_len = ms_setting.value_distr[j].end_len;
+
+ averge_len = val_pro * ((double) (start_len + end_len)) / 2;
+ avg_val_size += averge_len;
+ }
+
+ for (int j = 0; j < ms_setting.key_rng_cnt; j++) {
+ key_pro = ms_setting.key_distr[j].key_prop;
+ start_len = ms_setting.key_distr[j].start_len;
+ end_len = ms_setting.key_distr[j].end_len;
+
+ averge_len = key_pro * ((double) (start_len + end_len)) / 2;
+ avg_key_size += averge_len;
+ }
+
+ ms_setting.avg_val_size = (size_t) avg_val_size;
+ ms_setting.avg_key_size = (size_t) avg_key_size;
+} /* ms_calc_avg_size */
+
+/**
+ * used to shuffle key and value distribution array to ensure
+ * (key, value) pair with different set.
+ *
+ * @param distr, pointer of distribution structure array
+ * @param length, length of the array
+ *
+ * @return always return EXIT_SUCCESS
+ */
+static int ms_shuffle_distr(ms_distr_t *distr, int length) {
+ int i, j;
+ int tmp_offset;
+ size_t tmp_size;
+ int64_t rnd;
+
+ for (i = 0; i < length; i++) {
+ rnd = random();
+ j = (int) (rnd % (length - i)) + i;
+
+ switch (rnd % 3) {
+ case 0:
+ tmp_size = distr[j].key_size;
+ distr[j].key_size = distr[i].key_size;
+ distr[i].key_size = tmp_size;
+ break;
+
+ case 1:
+ tmp_offset = distr[j].key_offset;
+ distr[j].key_offset = distr[i].key_offset;
+ distr[i].key_offset = tmp_offset;
+ break;
+
+ case 2:
+ tmp_size = distr[j].value_size;
+ distr[j].value_size = distr[i].value_size;
+ distr[i].value_size = tmp_size;
+ break;
+
+ default:
+ break;
+ } /* switch */
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_shuffle_distr */
+
+/**
+ * according to the key and value distribution, to build the
+ * (key, value) pair distribution. the (key, value) pair
+ * distribution array is global, each connection set or get
+ * object keeping this distribution, for the final result, we
+ * can reach the expected key and value distribution.
+ */
+static void ms_build_distr() {
+ int offset = 0;
+ int end = 0;
+ int key_cnt = 0;
+ int value_cnt = 0;
+ size_t average_len = 0;
+ size_t diff_len = 0;
+ size_t start_len = 0;
+ size_t end_len = 0;
+ int rnd = 0;
+ ms_distr_t *distr = NULL;
+ int units = (int) ms_setting.win_size / UNIT_ITEMS_COUNT;
+
+ /* calculate average value size and key size */
+ ms_calc_avg_size();
+
+ ms_setting.char_blk_size = RAND_CHAR_SIZE;
+ int key_scope_size =
+ (int) ((ms_setting.char_blk_size - RESERVED_RAND_CHAR_SIZE) / UNIT_ITEMS_COUNT);
+
+ ms_setting.distr = (ms_distr_t *) malloc(sizeof(ms_distr_t) * ms_setting.win_size);
+ if (ms_setting.distr == NULL) {
+ fprintf(stderr, "Can't allocate distribution array.");
+ exit(1);
+ }
+
+ /**
+ * character block is divided by how many different key
+ * size, each different key size has the same size character
+ * range.
+ */
+ for (int m = 0; m < units; m++) {
+ for (int i = 0; i < UNIT_ITEMS_COUNT; i++) {
+ ms_setting.distr[m * UNIT_ITEMS_COUNT + i].key_offset = ADDR_ALIGN(key_scope_size * i);
+ }
+ }
+
+ /* initialize key size distribution */
+ for (int m = 0; m < units; m++) {
+ for (int j = 0; j < ms_setting.key_rng_cnt; j++) {
+ key_cnt = (int) (UNIT_ITEMS_COUNT * ms_setting.key_distr[j].key_prop);
+ start_len = ms_setting.key_distr[j].start_len;
+ end_len = ms_setting.key_distr[j].end_len;
+ if ((start_len < MIN_KEY_SIZE) || (end_len < MIN_KEY_SIZE)) {
+ fprintf(stderr, "key length must be greater than 16 bytes.\n");
+ exit(1);
+ }
+
+ if (!ms_setting.binary_prot_ && ((start_len > MAX_KEY_SIZE) || (end_len > MAX_KEY_SIZE))) {
+ fprintf(stderr, "key length must be less than 250 bytes.\n");
+ exit(1);
+ }
+
+ average_len = (start_len + end_len) / 2;
+ diff_len = (end_len - start_len) / 2;
+ for (int k = 0; k < key_cnt; k++) {
+ if (offset >= (m + 1) * UNIT_ITEMS_COUNT) {
+ break;
+ }
+ rnd = (int) random();
+ if (k % 2 == 0) {
+ ms_setting.distr[offset].key_size =
+ (diff_len == 0) ? average_len : average_len + (size_t) rnd % diff_len;
+ } else {
+ ms_setting.distr[offset].key_size =
+ (diff_len == 0) ? average_len : average_len - (size_t) rnd % diff_len;
+ }
+ offset++;
+ }
+ }
+
+ if (offset < (m + 1) * UNIT_ITEMS_COUNT) {
+ end = (m + 1) * UNIT_ITEMS_COUNT - offset;
+ for (int i = 0; i < end; i++) {
+ ms_setting.distr[offset].key_size = ms_setting.avg_key_size;
+ offset++;
+ }
+ }
+ }
+ offset = 0;
+
+ /* initialize value distribution */
+ if (ms_setting.fixed_value_size) {
+ for (int i = 0; i < units * UNIT_ITEMS_COUNT; i++) {
+ ms_setting.distr[i].value_size = ms_setting.fixed_value_size;
+ }
+ } else {
+ for (int m = 0; m < units; m++) {
+ for (int j = 0; j < ms_setting.val_rng_cnt; j++) {
+ value_cnt = (int) (UNIT_ITEMS_COUNT * ms_setting.value_distr[j].value_prop);
+ start_len = ms_setting.value_distr[j].start_len;
+ end_len = ms_setting.value_distr[j].end_len;
+ if ((start_len <= 0) || (end_len <= 0)) {
+ fprintf(stderr, "value length must be greater than 0 bytes.\n");
+ exit(1);
+ }
+
+ if ((start_len > MAX_VALUE_SIZE) || (end_len > MAX_VALUE_SIZE)) {
+ fprintf(stderr, "key length must be less than or equal to 1M.\n");
+ exit(1);
+ }
+
+ average_len = (start_len + end_len) / 2;
+ diff_len = (end_len - start_len) / 2;
+ for (int k = 0; k < value_cnt; k++) {
+ if (offset >= (m + 1) * UNIT_ITEMS_COUNT) {
+ break;
+ }
+ rnd = (int) random();
+ if (k % 2 == 0) {
+ ms_setting.distr[offset].value_size =
+ (diff_len == 0) ? average_len : average_len + (size_t) rnd % diff_len;
+ } else {
+ ms_setting.distr[offset].value_size =
+ (diff_len == 0) ? average_len : average_len - (size_t) rnd % diff_len;
+ }
+ offset++;
+ }
+ }
+
+ if (offset < (m + 1) * UNIT_ITEMS_COUNT) {
+ end = (m + 1) * UNIT_ITEMS_COUNT - offset;
+ for (int i = 0; i < end; i++) {
+ ms_setting.distr[offset++].value_size = ms_setting.avg_val_size;
+ }
+ }
+ }
+ }
+
+ /* shuffle distribution */
+ for (int i = 0; i < units; i++) {
+ distr = &ms_setting.distr[i * UNIT_ITEMS_COUNT];
+ for (int j = 0; j < 4; j++) {
+ ms_shuffle_distr(distr, UNIT_ITEMS_COUNT);
+ }
+ }
+} /* ms_build_distr */
+
+/**
+ * used to initialize the global character block. The character
+ * block is used to generate the suffix of the key and value. we
+ * only store a pointer in the character block for each key
+ * suffix or value string. It can save much memory to store key
+ * or value string.
+ */
+static void ms_init_random_block() {
+ char *ptr = NULL;
+
+ assert(ms_setting.char_blk_size > 0);
+
+ ms_setting.char_block = (char *) malloc(ms_setting.char_blk_size);
+ if (ms_setting.char_block == NULL) {
+ fprintf(stderr, "Can't allocate global char block.");
+ exit(1);
+ }
+ ptr = ms_setting.char_block;
+
+ for (int i = 0; (size_t) i < ms_setting.char_blk_size; i++) {
+ *(ptr++) = ALPHANUMBERICS[random() % CHAR_COUNT];
+ }
+} /* ms_init_random_block */
+
+/**
+ * after initialization, call this function to output the main
+ * configuration user specified.
+ */
+static void ms_print_setting() {
+ fprintf(stdout, "servers: %s\n", ms_setting.srv_str);
+ fprintf(stdout, "threads count: %d\n", ms_setting.nthreads);
+ fprintf(stdout, "concurrency: %d\n", ms_setting.nconns);
+ if (ms_setting.run_time > 0) {
+ fprintf(stdout, "run time: %ds\n", ms_setting.run_time);
+ } else {
+ fprintf(stdout, "execute number: %" PRId64 "\n", ms_setting.exec_num);
+ }
+ fprintf(stdout, "windows size: %" PRId64 "k\n", (int64_t)(ms_setting.win_size / 1024));
+ fprintf(stdout, "set proportion: set_prop=%.2f\n", ms_setting.cmd_distr[CMD_SET].cmd_prop);
+ fprintf(stdout, "get proportion: get_prop=%.2f\n", ms_setting.cmd_distr[CMD_GET].cmd_prop);
+ fflush(stdout);
+} /* ms_print_setting */
+
+/**
+ * previous part of slap mode initialization of setting structure
+ */
+static void ms_setting_slapmode_init_pre() {
+ ms_setting.exec_num = DEFAULT_EXE_NUM;
+ ms_setting.verify_percent = DEFAULT_VERIFY_RATE;
+ ms_setting.exp_ver_per = DEFAULT_VERIFY_RATE;
+ ms_setting.overwrite_percent = DEFAULT_OVERWRITE_RATE;
+ ms_setting.mult_key_num = DEFAULT_DIV;
+ ms_setting.fixed_value_size = 0;
+ ms_setting.win_size = DEFAULT_WINDOW_SIZE;
+ ms_setting.udp = false;
+ ms_setting.reconnect = false;
+ ms_setting.verbose = false;
+ ms_setting.facebook_test = false;
+ ms_setting.binary_prot_ = false;
+ ms_setting.stat_freq = 0;
+ ms_setting.srv_str = NULL;
+ ms_setting.cfg_file = NULL;
+ ms_setting.sock_per_conn = DEFAULT_SOCK_PER_CONN;
+ ms_setting.expected_tps = 0;
+ ms_setting.rep_write_srv = 0;
+} /* ms_setting_slapmode_init_pre */
+
+/**
+ * previous part of initialization of setting structure
+ */
+void ms_setting_init_pre() {
+ memset(&ms_setting, 0, sizeof(ms_setting));
+
+ /* common initialize */
+ ms_setting.ncpu = ms_get_cpu_count();
+ ms_setting.nthreads = DEFAULT_THREADS_NUM;
+ ms_setting.nconns = DEFAULT_CONNS_NUM;
+ ms_setting.run_time = DEFAULT_RUN_TIME;
+ ms_setting.total_srv_cnt = MCD_SRVS_NUM_INIT;
+ ms_setting.servers =
+ (ms_mcd_server_t *) malloc((size_t) ms_setting.total_srv_cnt * sizeof(ms_mcd_server_t));
+ if (ms_setting.servers == NULL) {
+ fprintf(stderr, "Can't allocate servers structure.\n");
+ exit(1);
+ }
+
+ ms_setting_slapmode_init_pre();
+} /* ms_setting_init_pre */
+
+/**
+ * post part of slap mode initialization of setting structure
+ */
+static void ms_setting_slapmode_init_post() {
+ ms_setting.total_key_rng_cnt = KEY_RANGE_COUNT_INIT;
+ ms_setting.key_distr =
+ (ms_key_distr_t *) malloc((size_t) ms_setting.total_key_rng_cnt * sizeof(ms_key_distr_t));
+
+ if (ms_setting.key_distr == NULL) {
+ fprintf(stderr, "Can't allocate key distribution structure.\n");
+ exit(1);
+ }
+
+ ms_setting.total_val_rng_cnt = VALUE_RANGE_COUNT_INIT;
+
+ ms_setting.value_distr =
+ (ms_value_distr_t *) malloc((size_t) ms_setting.total_val_rng_cnt * sizeof(ms_value_distr_t));
+
+ if (ms_setting.value_distr == NULL) {
+ fprintf(stderr, "Can't allocate value distribution structure.\n");
+ exit(1);
+ }
+
+ ms_parse_cfg_file(ms_setting.cfg_file);
+
+ /* run time mode */
+ if ((ms_setting.exec_num == 0) && (ms_setting.run_time)) {
+ ms_setting.exec_num = (int64_t) MAX_EXEC_NUM;
+ } else {
+ /* execute number mode */
+ ms_setting.run_time = 0;
+ }
+
+ if (ms_setting.rep_write_srv > 0) {
+ /* for replication test, need enable reconnect feature */
+ ms_setting.reconnect = true;
+ }
+
+ if (ms_setting.facebook_test && (ms_setting.mult_key_num < 2)) {
+ fprintf(stderr,
+ "facebook test must work with multi-get, "
+ "please specify multi-get key number "
+ "with '--division' option.\n");
+ exit(1);
+ }
+
+ if (ms_setting.facebook_test && ms_setting.udp) {
+ fprintf(stderr, "facebook test couldn't work with UDP.\n");
+ exit(1);
+ }
+
+ if (ms_setting.udp && (ms_setting.sock_per_conn > 1)) {
+ fprintf(stderr,
+ "UDP doesn't support multi-socks "
+ "in one connection structure.\n");
+ exit(1);
+ }
+
+ if ((ms_setting.rep_write_srv > 0) && (ms_setting.srv_cnt < 2)) {
+ fprintf(stderr, "Please specify 2 servers at least for replication\n");
+ exit(1);
+ }
+
+ if ((ms_setting.rep_write_srv > 0) && (ms_setting.srv_cnt < ms_setting.rep_write_srv)) {
+ fprintf(stderr,
+ "Servers to do replication writing "
+ "is larger than the total servers\n");
+ exit(1);
+ }
+
+ if (ms_setting.udp && (ms_setting.rep_write_srv > 0)) {
+ fprintf(stderr, "UDP doesn't support replication.\n");
+ exit(1);
+ }
+
+ if (ms_setting.facebook_test && (ms_setting.rep_write_srv > 0)) {
+ fprintf(stderr, "facebook test couldn't work with replication.\n");
+ exit(1);
+ }
+
+ ms_build_distr();
+
+ /* initialize global character block */
+ ms_init_random_block();
+ ms_print_setting();
+} /* ms_setting_slapmode_init_post */
+
+/**
+ * post part of initialization of setting structure
+ */
+void ms_setting_init_post() {
+ ms_get_serverlist(ms_setting.srv_str);
+ ms_setting_slapmode_init_post();
+}
+
+/**
+ * clean up the global setting structure
+ */
+void ms_setting_cleanup() {
+ if (ms_setting.distr) {
+ free(ms_setting.distr);
+ }
+
+ if (ms_setting.char_block) {
+ free(ms_setting.char_block);
+ }
+
+ if (ms_setting.srv_str) {
+ free(ms_setting.srv_str);
+ }
+
+ if (ms_setting.cfg_file) {
+ free(ms_setting.cfg_file);
+ }
+
+ if (ms_setting.servers) {
+ free(ms_setting.servers);
+ }
+
+ if (ms_setting.key_distr) {
+ free(ms_setting.key_distr);
+ }
+
+ if (ms_setting.value_distr) {
+ free(ms_setting.value_distr);
+ }
+} /* ms_setting_cleanup */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_SETTING_H
+#define MS_SETTING_H
+
+#include "ms_memslap.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MCD_SRVS_NUM_INIT 8
+#define MCD_HOST_LENGTH 64
+#define KEY_RANGE_COUNT_INIT 8
+#define VALUE_RANGE_COUNT_INIT 8
+#define PROP_ERROR 0.001
+
+#define MIN_KEY_SIZE 16
+#define MAX_KEY_SIZE 250
+#define MAX_VALUE_SIZE (1024 * 1024)
+
+/* the content of the configuration file for memslap running without configuration file */
+#define DEFAULT_CONGIF_STR \
+ "key\n" \
+ "64 64 1\n" \
+ "value\n" \
+ "1024 1024 1\n" \
+ "cmd\n" \
+ "0 0.1\n" \
+ "1 0.9"
+
+/* Used to parse the value length return by server and path string */
+typedef struct token_s {
+ char *value;
+ size_t length;
+} token_t;
+
+#define MAX_TOKENS 10
+
+/* server information */
+typedef struct mcd_server {
+ char srv_host_name[MCD_HOST_LENGTH]; /* host name of server */
+ int srv_port; /* server port */
+
+ /* for calculating how long the server disconnects */
+ ATOMIC uint32_t disconn_cnt; /* number of disconnections count */
+ ATOMIC uint32_t reconn_cnt; /* number of reconnections count */
+ struct timeval disconn_time; /* start time of disconnection */
+ struct timeval reconn_time; /* end time of reconnection */
+} ms_mcd_server_t;
+
+/* information of an item distribution including key and value */
+typedef struct distr {
+ size_t key_size; /* size of key */
+ int key_offset; /* offset of one key in character block */
+ size_t value_size; /* size of value */
+} ms_distr_t;
+
+/* information of key distribution */
+typedef struct key_distr {
+ size_t start_len; /* start of the key length range */
+ size_t end_len; /* end of the key length range */
+ double key_prop; /* key proportion */
+} ms_key_distr_t;
+
+/* information of value distribution */
+typedef struct value_distr {
+ size_t start_len; /* start of the value length range */
+ size_t end_len; /* end of the value length range */
+ double value_prop; /* value proportion */
+} ms_value_distr_t;
+
+/* memcached command types */
+typedef enum cmd_type { CMD_SET, CMD_GET, CMD_NULL } ms_cmd_type_t;
+
+/* types in the configuration file */
+typedef enum conf_type { CONF_KEY, CONF_VALUE, CONF_CMD, CONF_NULL } ms_conf_type_t;
+
+/* information of command distribution */
+typedef struct cmd_distr {
+ ms_cmd_type_t cmd_type; /* command type */
+ double cmd_prop; /* proportion of the command */
+} ms_cmd_distr_t;
+
+/* global setting structure */
+typedef struct setting {
+ uint32_t ncpu; /* cpu count of this system */
+ uint32_t nthreads; /* total thread count, must equal or less than cpu cores */
+ uint32_t nconns; /* total conn count, must multiply by total thread count */
+ int64_t exec_num; /* total execute number */
+ int run_time; /* total run time */
+
+ uint32_t char_blk_size; /* global character block size */
+ char *char_block; /* global character block with random character */
+ ms_distr_t *distr; /* distribution from configure file */
+
+ char *srv_str; /* string includes servers information */
+ char *cfg_file; /* configure file name */
+
+ ms_mcd_server_t *servers; /* servers array */
+ uint32_t total_srv_cnt; /* total servers count of the servers array */
+ uint32_t srv_cnt; /* servers count */
+
+ ms_key_distr_t *key_distr; /* array of key distribution */
+ int total_key_rng_cnt; /* total key range count of the array */
+ int key_rng_cnt; /* actual key range count */
+
+ ms_value_distr_t *value_distr; /* array of value distribution */
+ int total_val_rng_cnt; /* total value range count of the array */
+ int val_rng_cnt; /* actual value range count */
+
+ ms_cmd_distr_t cmd_distr[CMD_NULL]; /* total we have CMD_NULL commands */
+ int cmd_used_count; /* supported command count */
+
+ size_t fixed_value_size; /* fixed value size */
+ size_t avg_val_size; /* average value size */
+ size_t avg_key_size; /* average value size */
+
+ double verify_percent; /* percent of data verification */
+ double exp_ver_per; /* percent of data verification with expire time */
+ double overwrite_percent; /* percent of overwrite */
+ int mult_key_num; /* number of keys used by multi-get once */
+ size_t win_size; /* item window size per connection */
+ bool udp; /* whether or not use UDP */
+ int stat_freq; /* statistic frequency second */
+ bool reconnect; /* whether it reconnect when connection close */
+ bool verbose; /* whether it outputs detailed information when verification */
+ bool facebook_test; /* facebook test, TCP set and multi-get with UDP */
+ uint32_t sock_per_conn; /* number of socks per connection structure */
+ bool binary_prot_; /* whether it use binary protocol */
+ int expected_tps; /* expected throughput */
+ uint32_t rep_write_srv; /* which servers are used to do replication writing */
+} ms_setting_st;
+
+extern ms_setting_st ms_setting;
+
+/* previous part of initialization of setting structure */
+void ms_setting_init_pre(void);
+
+/* post part of initialization of setting structure */
+void ms_setting_init_post(void);
+
+/* clean up the global setting structure */
+void ms_setting_cleanup(void);
+
+#define UNUSED_ARGUMENT(x) (void) x
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_SETTING_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#include <memory.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <pthread.h>
+
+#include "ms_memslap.h"
+#include "ms_setting.h"
+
+/* prototypes */
+int ms_setup_sigsegv(void);
+int ms_setup_sigpipe(void);
+int ms_setup_sigint(void);
+
+/* signal seg reaches, this function will run */
+static void ms_signal_segv(int signum, siginfo_t *info, void *ptr) {
+ UNUSED_ARGUMENT(signum);
+ UNUSED_ARGUMENT(info);
+ UNUSED_ARGUMENT(ptr);
+
+ pthread_mutex_lock(&ms_global.quit_mutex);
+ fprintf(stderr, "Segmentation fault occurred.\nStack trace:\n");
+#if 0
+ pandora_print_callstack(stderr);
+#endif
+ fprintf(stderr, "End of stack trace\n");
+ pthread_mutex_unlock(&ms_global.quit_mutex);
+ abort();
+}
+
+/* signal int reaches, this function will run */
+static void ms_signal_int(int signum, siginfo_t *info, void *ptr) {
+ UNUSED_ARGUMENT(signum);
+ UNUSED_ARGUMENT(info);
+ UNUSED_ARGUMENT(ptr);
+
+ pthread_mutex_lock(&ms_global.quit_mutex);
+ fprintf(stderr, "SIGINT handled.\n");
+ pthread_mutex_unlock(&ms_global.quit_mutex);
+ exit(1);
+} /* ms_signal_int */
+
+/**
+ * redirect signal seg
+ *
+ * @return if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_setup_sigsegv(void) {
+ struct sigaction action;
+
+ memset(&action, 0, sizeof(action));
+ action.sa_sigaction = ms_signal_segv;
+ action.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGSEGV, &action, NULL) < 0) {
+ perror("sigaction");
+ return EXIT_SUCCESS;
+ }
+
+ return -1;
+} /* ms_setup_sigsegv */
+
+/**
+ * redirect signal pipe
+ *
+ * @return if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_setup_sigpipe(void) {
+ /* ignore the SIGPIPE signal */
+ signal(SIGPIPE, SIG_IGN);
+
+ return -1;
+} /* ms_setup_sigpipe */
+
+/**
+ * redirect signal int
+ *
+ * @return if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_setup_sigint(void) {
+ struct sigaction action_3;
+
+ memset(&action_3, 0, sizeof(action_3));
+ action_3.sa_sigaction = ms_signal_int;
+ action_3.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGINT, &action_3, NULL) < 0) {
+ perror("sigaction");
+ return EXIT_SUCCESS;
+ }
+
+ return -1;
+} /* ms_setup_sigint */
+
+#ifndef SIGSEGV_NO_AUTO_INIT
+static void __attribute((constructor)) ms_init(void) {
+ ms_setup_sigsegv();
+ ms_setup_sigpipe();
+ ms_setup_sigint();
+}
+#endif
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_SIGSEGV_H
+#define MS_SIGSEGV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* redirect signal seg */
+int ms_setup_sigsegv(void);
+
+/* redirect signal pipe */
+int ms_setup_sigpipe(void);
+
+/* redirect signal int */
+int ms_setup_sigint(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_SIGSEGV_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#include <inttypes.h>
+#include "ms_stats.h"
+
+#define array_size(x) (sizeof(x) / sizeof((x)[0]))
+
+static int ms_local_log2(uint64_t value);
+static uint64_t ms_get_events(ms_stat_t *stat);
+
+/**
+ * get the index of local log2 array
+ *
+ * @param value
+ *
+ * @return return the index of local log2 array
+ */
+static int ms_local_log2(uint64_t value) {
+ int result = 0;
+
+ while (result <= 63 && ((uint64_t) 1 << result) < value) {
+ result++;
+ }
+
+ return result;
+} /* ms_local_log2 */
+
+/**
+ * initialize statistic structure
+ *
+ * @param stat, pointer of the statistic structure
+ * @param name, name of the statistic
+ */
+void ms_init_stats(ms_stat_t *stat, const char *name) {
+ memset(stat, 0, sizeof(*stat));
+
+ stat->name = (char *) name;
+ stat->min_time = (uint64_t) -1;
+ stat->max_time = 0;
+ stat->period_min_time = (uint64_t) -1;
+ stat->period_max_time = 0;
+ stat->log_product = 0;
+ stat->total_time = 0;
+ stat->pre_total_time = 0;
+ stat->squares = 0;
+ stat->pre_squares = 0;
+ stat->pre_events = 0;
+ stat->pre_log_product = 0;
+ stat->get_miss = 0;
+ stat->pre_get_miss = 0;
+} /* ms_init_stats */
+
+/**
+ * record one event
+ *
+ * @param stat, pointer of the statistic structure
+ * @param total_time, response time of the command
+ * @param get_miss, whether it gets miss
+ */
+void ms_record_event(ms_stat_t *stat, uint64_t total_time, int get_miss) {
+ stat->total_time += total_time;
+
+ if (total_time < stat->min_time) {
+ stat->min_time = total_time;
+ }
+
+ if (total_time > stat->max_time) {
+ stat->max_time = total_time;
+ }
+
+ if (total_time < stat->period_min_time) {
+ stat->period_min_time = total_time;
+ }
+
+ if (total_time > stat->period_max_time) {
+ stat->period_max_time = total_time;
+ }
+
+ if (get_miss) {
+ stat->get_miss++;
+ }
+
+ stat->dist[ms_local_log2(total_time)]++;
+ stat->squares += (double) (total_time * total_time);
+
+ if (total_time) {
+ stat->log_product += log((double) total_time);
+ }
+} /* ms_record_event */
+
+/**
+ * get the events count
+ *
+ * @param stat, pointer of the statistic structure
+ *
+ * @return total events recorded
+ */
+static uint64_t ms_get_events(ms_stat_t *stat) {
+ uint64_t events = 0;
+
+ for (uint32_t i = 0; i < array_size(stat->dist); i++) {
+ events += stat->dist[i];
+ }
+
+ return events;
+} /* ms_get_events */
+
+/**
+ * dump the statistics
+ *
+ * @param stat, pointer of the statistic structure
+ */
+void ms_dump_stats(ms_stat_t *stat) {
+ uint64_t events = 0;
+ int max_non_zero = 0;
+ int min_non_zero = 0;
+ double average = 0;
+
+ for (uint32_t i = 0; i < array_size(stat->dist); i++) {
+ events += stat->dist[i];
+ if (stat->dist[i]) {
+ max_non_zero = (int) i;
+ }
+ }
+
+ if (events == 0) {
+ return;
+ }
+ average = (double) (stat->total_time / events);
+
+ printf("%s Statistics (%lld events)\n", stat->name, (long long) events);
+ printf(" Min: %8lld\n", (long long) stat->min_time);
+ printf(" Max: %8lld\n", (long long) stat->max_time);
+ printf(" Avg: %8lld\n", (long long) (stat->total_time / events));
+ printf(" Geo: %8.2lf\n", exp(stat->log_product / (double) events));
+
+ if (events > 1) {
+ printf(" Std: %8.2lf\n",
+ sqrt((stat->squares - (double) events * average * average) / ((double) events - 1)));
+ }
+ printf(" Log2 Dist:");
+
+ for (int i = 0; i <= max_non_zero - 4; i += 4) {
+ if ((stat->dist[i + 0]) || (stat->dist[i + 1]) || (stat->dist[i + 2])
+ || (stat->dist[i + 3]))
+ {
+ min_non_zero = i;
+ break;
+ }
+ }
+
+ for (int i = min_non_zero; i <= max_non_zero; i++) {
+ if ((i % 4) == 0) {
+ printf("\n %2d:", (int) i);
+ }
+ printf(" %6" PRIu64, stat->dist[i]);
+ }
+
+ printf("\n\n");
+} /* ms_dump_stats */
+
+/**
+ * dump the format statistics
+ *
+ * @param stat, pointer of the statistic structure
+ * @param run_time, the total run time
+ * @param freq, statistic frequency
+ * @param obj_size, average object size
+ */
+void ms_dump_format_stats(ms_stat_t *stat, int run_time, int freq, int obj_size) {
+ uint64_t events = 0;
+ double global_average = 0;
+ uint64_t global_tps = 0;
+ double global_rate = 0;
+ double global_std = 0;
+ double global_log = 0;
+
+ double period_average = 0;
+ uint64_t period_tps = 0;
+ double period_rate = 0;
+ double period_std = 0;
+ double period_log = 0;
+
+ if ((events = ms_get_events(stat)) == 0) {
+ return;
+ }
+
+ global_average = (double) (stat->total_time / events);
+ global_tps = events / (uint64_t) run_time;
+ global_rate = (double) events * obj_size / 1024 / 1024 / run_time;
+ global_std = sqrt((stat->squares - (double) events * global_average * global_average)
+ / (double) (events - 1));
+ global_log = exp(stat->log_product / (double) events);
+
+ uint64_t diff_time = stat->total_time - stat->pre_total_time;
+ uint64_t diff_events = events - stat->pre_events;
+ if (diff_events >= 1) {
+ period_average = (double) (diff_time / diff_events);
+ period_tps = diff_events / (uint64_t) freq;
+ period_rate = (double) diff_events * obj_size / 1024 / 1024 / freq;
+ double diff_squares = (double) stat->squares - (double) stat->pre_squares;
+ period_std = sqrt((diff_squares - (double) diff_events * period_average * period_average)
+ / (double) (diff_events - 1));
+ double diff_log_product = stat->log_product - stat->pre_log_product;
+ period_log = exp(diff_log_product / (double) diff_events);
+ }
+
+ printf("%s Statistics\n", stat->name);
+ printf("%-8s %-8s %-12s %-12s %-10s %-10s %-8s %-10s %-10s %-10s %-10s\n", "Type", "Time(s)",
+ "Ops", "TPS(ops/s)", "Net(M/s)", "Get_miss", "Min(us)", "Max(us)", "Avg(us)", "Std_dev",
+ "Geo_dist");
+
+ printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n",
+ "Period", freq, (long long) diff_events, (long long) period_tps, global_rate,
+ (long long) (stat->get_miss - stat->pre_get_miss), (long long) stat->period_min_time,
+ (long long) stat->period_max_time, (long long) period_average, period_std, period_log);
+
+ printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n\n",
+ "Global", run_time, (long long) events, (long long) global_tps, period_rate,
+ (long long) stat->get_miss, (long long) stat->min_time, (long long) stat->max_time,
+ (long long) global_average, global_std, global_log);
+
+ stat->pre_events = events;
+ stat->pre_squares = (uint64_t) stat->squares;
+ stat->pre_total_time = stat->total_time;
+ stat->pre_log_product = stat->log_product;
+ stat->period_min_time = (uint64_t) -1;
+ stat->period_max_time = 0;
+ stat->pre_get_miss = stat->get_miss;
+} /* ms_dump_format_stats */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_STAT_H
+#define MS_STAT_H
+
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* statistic structure of response time */
+typedef struct {
+ char *name;
+ uint64_t total_time;
+ uint64_t min_time;
+ uint64_t max_time;
+ uint64_t get_miss;
+ uint64_t dist[65];
+ double squares;
+ double log_product;
+
+ uint64_t period_min_time;
+ uint64_t period_max_time;
+ uint64_t pre_get_miss;
+ uint64_t pre_events;
+ uint64_t pre_total_time;
+ uint64_t pre_squares;
+ double pre_log_product;
+} ms_stat_t;
+
+/* initialize statistic */
+void ms_init_stats(ms_stat_t *stat, const char *name);
+
+/* record one event */
+void ms_record_event(ms_stat_t *stat, uint64_t time, int get_miss);
+
+/* dump the statistics */
+void ms_dump_stats(ms_stat_t *stat);
+
+/* dump the format statistics */
+void ms_dump_format_stats(ms_stat_t *stat, int run_time, int freq, int obj_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MS_STAT_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#if defined(HAVE_SYS_TIME_H)
+# include <sys/time.h>
+#endif
+
+#if defined(HAVE_TIME_H)
+# include <time.h>
+#endif
+
+#include "ms_thread.h"
+#include "ms_setting.h"
+#include "ms_atomic.h"
+
+/* command distribution adjustment cycle */
+#define CMD_DISTR_ADJUST_CYCLE 1000
+#define DISADJUST_FACTOR \
+ 0.03 /** \
+ * In one adjustment cycle, if undo set or get \
+ * operations proportion is more than 3% , means \
+ * there are too many new item or need more new \
+ * item in the window. This factor shows it. \
+ */
+
+/* get item from task window */
+static ms_task_item_t *ms_get_cur_opt_item(ms_conn_t *c);
+static ms_task_item_t *ms_get_next_get_item(ms_conn_t *c);
+static ms_task_item_t *ms_get_next_set_item(ms_conn_t *c);
+static ms_task_item_t *ms_get_random_overwrite_item(ms_conn_t *c);
+
+/* select next operation to do */
+static void ms_select_opt(ms_conn_t *c, ms_task_t *task);
+
+/* set and get speed estimate for controlling and adjustment */
+static bool ms_is_set_too_fast(ms_task_t *task);
+static bool ms_is_get_too_fast(ms_task_t *task);
+static void ms_kick_out_item(ms_task_item_t *item);
+
+/* miss rate adjustment */
+static bool ms_need_overwrite_item(ms_task_t *task);
+static bool ms_adjust_opt(ms_conn_t *c, ms_task_t *task);
+
+/* deal with data verification initialization */
+static void ms_task_data_verify_init(ms_task_t *task);
+static void ms_task_expire_verify_init(ms_task_t *task);
+
+/* select a new task to do */
+static ms_task_t *ms_get_task(ms_conn_t *c, bool warmup);
+
+/* run the selected task */
+static void ms_update_set_result(ms_conn_t *c, ms_task_item_t *item);
+static void ms_update_stat_result(ms_conn_t *c);
+static void ms_update_multi_get_result(ms_conn_t *c);
+static void ms_update_single_get_result(ms_conn_t *c, ms_task_item_t *item);
+static void ms_update_task_result(ms_conn_t *c);
+static void ms_single_getset_task_sch(ms_conn_t *c);
+static void ms_multi_getset_task_sch(ms_conn_t *c);
+static void ms_send_signal(ms_sync_lock_t *sync_lock);
+static void ms_warmup_server(ms_conn_t *c);
+static int ms_run_getset_task(ms_conn_t *c);
+
+/**
+ * used to get the current operation item(object)
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return ms_task_item_t*, current operating item
+ */
+static ms_task_item_t *ms_get_cur_opt_item(ms_conn_t *c) {
+ return c->curr_task.item;
+}
+
+/**
+ * used to get the next item to do get operation
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return ms_task_item_t*, the pointer of the next item to do
+ * get operation
+ */
+static ms_task_item_t *ms_get_next_get_item(ms_conn_t *c) {
+ ms_task_item_t *item = NULL;
+
+ if (c->set_cursor <= 0) {
+ /* the first item in the window */
+ item = &c->item_win[0];
+ } else if (c->set_cursor > 0 && c->set_cursor < (uint32_t) c->win_size) {
+ /* random get one item set before */
+ item = &c->item_win[random() % (int64_t) c->set_cursor];
+ } else {
+ /* random get one item from the window */
+ item = &c->item_win[random() % c->win_size];
+ }
+
+ return item;
+} /* ms_get_next_get_item */
+
+/**
+ * used to get the next item to do set operation
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return ms_task_item_t*, the pointer of the next item to do
+ * set operation
+ */
+static ms_task_item_t *ms_get_next_set_item(ms_conn_t *c) {
+ /**
+ * when a set command successes, the cursor will plus 1. If set
+ * fails, the cursor doesn't change. it isn't necessary to
+ * increase the cursor here.
+ */
+ return &c->item_win[(int64_t) c->set_cursor % c->win_size];
+}
+
+/**
+ * If we need do overwrite, we could select a item set before.
+ * This function is used to get a item set before to do
+ * overwrite.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return ms_task_item_t*, the pointer of the previous item of
+ * set operation
+ */
+static ms_task_item_t *ms_get_random_overwrite_item(ms_conn_t *c) {
+ return ms_get_next_get_item(c);
+} /* ms_get_random_overwrite_item */
+
+/**
+ * According to the proportion of operations(get or set), select
+ * an operation to do.
+ *
+ * @param c, pointer of the concurrency
+ * @param task, pointer of current task in the concurrency
+ */
+static void ms_select_opt(ms_conn_t *c, ms_task_t *task) {
+ double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
+ double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
+
+ /* update cycle operation number if necessary */
+ if ((task->cycle_undo_get == 0) || (task->cycle_undo_set == 0)) {
+ task->cycle_undo_get += (int) (CMD_DISTR_ADJUST_CYCLE * get_prop);
+ task->cycle_undo_set += (int) (CMD_DISTR_ADJUST_CYCLE * set_prop);
+ }
+
+ /**
+ * According to operation distribution to choose doing which
+ * operation. If it can't set new object to sever, just change
+ * to do get operation.
+ */
+ if ((set_prop > PROP_ERROR)
+ && ((double) task->get_opt * set_prop >= (double) task->set_opt * get_prop))
+ {
+ task->cmd = CMD_SET;
+ task->item = ms_get_next_set_item(c);
+ } else {
+ task->cmd = CMD_GET;
+ task->item = ms_get_next_get_item(c);
+ }
+} /* ms_select_opt */
+
+/**
+ * used to judge whether the number of get operations done is
+ * more than expected number of get operations to do right now.
+ *
+ * @param task, pointer of current task in the concurrency
+ *
+ * @return bool, if get too fast, return true, else return false
+ */
+static bool ms_is_get_too_fast(ms_task_t *task) {
+ double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
+ double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
+
+ /* no get operation */
+ if (get_prop < PROP_ERROR) {
+ return false;
+ }
+
+ int max_undo_set = (int) (set_prop / get_prop * (1.0 + DISADJUST_FACTOR)) * task->cycle_undo_get;
+
+ if (((double) task->get_opt * set_prop > (double) task->set_opt * get_prop)
+ && (task->cycle_undo_set > max_undo_set))
+ {
+ return true;
+ }
+
+ return false;
+} /* ms_is_get_too_fast */
+
+/**
+ * used to judge whether the number of set operations done is
+ * more than expected number of set operations to do right now.
+ *
+ * @param task, pointer of current task in the concurrency
+ *
+ * @return bool, if set too fast, return true, else return false
+ */
+static bool ms_is_set_too_fast(ms_task_t *task) {
+ double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
+ double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
+
+ /* no set operation */
+ if (set_prop < PROP_ERROR) {
+ return false;
+ }
+
+ /* If it does set operation too fast, skip some */
+ int max_undo_get =
+ (int) ((get_prop / set_prop * (1.0 + DISADJUST_FACTOR)) * (double) task->cycle_undo_set);
+
+ if (((double) task->get_opt * set_prop < (double) task->set_opt * get_prop)
+ && (task->cycle_undo_get > max_undo_get))
+ {
+ return true;
+ }
+
+ return false;
+} /* ms_is_set_too_fast */
+
+/**
+ * kick out the old item in the window, and add a new item to
+ * overwrite the old item. When we don't want to do overwrite
+ * object, and the current item to do set operation is an old
+ * item, we could kick out the old item and add a new item. Then
+ * we can ensure we set new object every time.
+ *
+ * @param item, pointer of task item which includes the object
+ * information
+ */
+static void ms_kick_out_item(ms_task_item_t *item) {
+ /* allocate a new item */
+ item->key_prefix = ms_get_key_prefix();
+
+ item->key_suffix_offset++;
+ item->value_offset = INVALID_OFFSET; /* new item use invalid value offset */
+ item->client_time = 0;
+} /* ms_kick_out_item */
+
+/**
+ * used to judge whether we need overwrite object based on the
+ * options user specified
+ *
+ * @param task, pointer of current task in the concurrency
+ *
+ * @return bool, if need overwrite, return true, else return
+ * false
+ */
+static bool ms_need_overwrite_item(ms_task_t *task) {
+ ms_task_item_t *item = task->item;
+
+ assert(item);
+ assert(task->cmd == CMD_SET);
+
+ /**
+ * according to data overwrite percent to determine if do data
+ * overwrite.
+ */
+ if (task->overwrite_set < (double) task->set_opt * ms_setting.overwrite_percent) {
+ return true;
+ }
+
+ return false;
+} /* ms_need_overwirte_item */
+
+/**
+ * used to adjust operation. the function must be called after
+ * select operation. the function change get operation to set
+ * operation, or set operation to get operation based on the
+ * current case.
+ *
+ * @param c, pointer of the concurrency
+ * @param task, pointer of current task in the concurrency
+ *
+ * @return bool, if success, return true, else return false
+ */
+static bool ms_adjust_opt(ms_conn_t *c, ms_task_t *task) {
+ ms_task_item_t *item = task->item;
+
+ assert(item);
+
+ if (task->cmd == CMD_SET) {
+ /* If did set operation too fast, skip some */
+ if (ms_is_set_too_fast(task)) {
+ /* get the item instead */
+ if (item->value_offset != INVALID_OFFSET) {
+ task->cmd = CMD_GET;
+ return true;
+ }
+ }
+
+ /* If the current item is not a new item, kick it out */
+ if (item->value_offset != INVALID_OFFSET) {
+ if (ms_need_overwrite_item(task)) {
+ /* overwrite */
+ task->overwrite_set++;
+ } else {
+ /* kick out the current item to do set operation */
+ ms_kick_out_item(item);
+ }
+ } else /* it's a new item */ {
+ /* need overwrite */
+ if (ms_need_overwrite_item(task)) {
+ /**
+ * overwrite not use the item with current set cursor, revert
+ * set cursor.
+ */
+ c->set_cursor--;
+
+ item = ms_get_random_overwrite_item(c);
+ if (item->value_offset != INVALID_OFFSET) {
+ task->item = item;
+ task->overwrite_set++;
+ } else /* item is a new item */ {
+ /* select the item to run, and cancel overwrite */
+ task->item = item;
+ }
+ }
+ }
+ task->cmd = CMD_SET;
+ return true;
+ } else {
+ if (item->value_offset == INVALID_OFFSET) {
+ task->cmd = CMD_SET;
+ return true;
+ }
+
+ /**
+ * If It does get operation too fast, it will change the
+ * operation to set.
+ */
+ if (ms_is_get_too_fast(task)) {
+ /* don't kick out the first item in the window */
+ if (!ms_is_set_too_fast(task)) {
+ ms_kick_out_item(item);
+ task->cmd = CMD_SET;
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ assert(item->value_offset != INVALID_OFFSET);
+
+ task->cmd = CMD_GET;
+ return true;
+ }
+} /* ms_adjust_opt */
+
+/**
+ * used to initialize the task which need verify data.
+ *
+ * @param task, pointer of current task in the concurrency
+ */
+static void ms_task_data_verify_init(ms_task_t *task) {
+ ms_task_item_t *item = task->item;
+
+ assert(item);
+ assert(task->cmd == CMD_GET);
+
+ /**
+ * according to data verification percent to determine if do
+ * data verification.
+ */
+ if (task->verified_get < (double) task->get_opt * ms_setting.verify_percent) {
+ /**
+ * currently it doesn't do verify, just increase the counter,
+ * and do verification next proper get command
+ */
+ if ((task->item->value_offset != INVALID_OFFSET) && (item->exp_time == 0)) {
+ task->verify = true;
+ task->finish_verify = false;
+ task->verified_get++;
+ }
+ }
+} /* ms_task_data_verify_init */
+
+/**
+ * used to initialize the task which need verify expire time.
+ *
+ * @param task, pointer of current task in the concurrency
+ */
+static void ms_task_expire_verify_init(ms_task_t *task) {
+ ms_task_item_t *item = task->item;
+
+ assert(item);
+ assert(task->cmd == CMD_GET);
+ assert(item->exp_time > 0);
+
+ task->verify = true;
+ task->finish_verify = false;
+} /* ms_task_expire_verify_init */
+
+/**
+ * used to get one task, the function initializes the task
+ * structure.
+ *
+ * @param c, pointer of the concurrency
+ * @param warmup, whether it need warmup
+ *
+ * @return ms_task_t*, pointer of current task in the
+ * concurrency
+ */
+static ms_task_t *ms_get_task(ms_conn_t *c, bool warmup) {
+ ms_task_t *task = &c->curr_task;
+
+ while (1) {
+ task->verify = false;
+ task->finish_verify = true;
+ task->get_miss = true;
+
+ if (warmup) {
+ task->cmd = CMD_SET;
+ task->item = ms_get_next_set_item(c);
+
+ return task;
+ }
+
+ /* according to operation distribution to choose doing which operation */
+ ms_select_opt(c, task);
+
+ if (!ms_adjust_opt(c, task)) {
+ continue;
+ }
+
+ if ((ms_setting.verify_percent > 0) && (task->cmd == CMD_GET)) {
+ ms_task_data_verify_init(task);
+ }
+
+ if ((ms_setting.exp_ver_per > 0) && (task->cmd == CMD_GET) && (task->item->exp_time > 0)) {
+ ms_task_expire_verify_init(task);
+ }
+
+ break;
+ }
+
+ /**
+ * Only update get and delete counter, set counter will be
+ * updated after set operation successes.
+ */
+ if (task->cmd == CMD_GET) {
+ task->get_opt++;
+ task->cycle_undo_get--;
+ }
+
+ return task;
+} /* ms_get_task */
+
+/**
+ * send a signal to the main monitor thread
+ *
+ * @param sync_lock, pointer of the lock
+ */
+static void ms_send_signal(ms_sync_lock_t *sync_lock) {
+ pthread_mutex_lock(&sync_lock->lock);
+ sync_lock->count++;
+ pthread_cond_signal(&sync_lock->cond);
+ pthread_mutex_unlock(&sync_lock->lock);
+} /* ms_send_signal */
+
+/**
+ * If user only want to do get operation, but there is no object
+ * in server , so we use this function to warmup the server, and
+ * set some objects to server. It runs at the beginning of task.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_warmup_server(ms_conn_t *c) {
+ ms_task_t *task;
+ ms_task_item_t *item;
+
+ /**
+ * Extra one loop to get the last command returned state.
+ * Normally it gets the previous command returned state.
+ */
+ if ((c->remain_warmup_num >= 0) && (c->remain_warmup_num != c->warmup_num)) {
+ item = ms_get_cur_opt_item(c);
+ /* only update the set command result state for data verification */
+ if ((c->precmd.cmd == CMD_SET) && (c->precmd.retstat == MCD_STORED)) {
+ item->value_offset = item->key_suffix_offset;
+ /* set success, update counter */
+ c->set_cursor++;
+ } else if (c->precmd.cmd == CMD_SET && c->precmd.retstat != MCD_STORED) {
+ printf("key: %" PRIx64 " didn't set success\n", item->key_prefix);
+ }
+ }
+
+ /* the last time don't run a task */
+ if (c->remain_warmup_num-- > 0) {
+ /* operate next task item */
+ task = ms_get_task(c, true);
+ item = task->item;
+ ms_mcd_set(c, item);
+ }
+
+ /**
+ * finish warming up server, wait all connects initialize
+ * complete. Then all connects can start do task at the same
+ * time.
+ */
+ if (c->remain_warmup_num == -1) {
+ ms_send_signal(&ms_global.warmup_lock);
+ c->remain_warmup_num--; /* never run the if branch */
+ }
+} /* ms_warmup_server */
+
+/**
+ * dispatch single get and set task
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_single_getset_task_sch(ms_conn_t *c) {
+ ms_task_t *task;
+ ms_task_item_t *item;
+
+ /* the last time don't run a task */
+ if (c->remain_exec_num-- > 0) {
+ task = ms_get_task(c, false);
+ item = task->item;
+ if (task->cmd == CMD_SET) {
+ ms_mcd_set(c, item);
+ } else if (task->cmd == CMD_GET) {
+ assert(task->cmd == CMD_GET);
+ ms_mcd_get(c, item);
+ }
+ }
+} /* ms_single_getset_task_sch */
+
+/**
+ * dispatch multi-get and set task
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_multi_getset_task_sch(ms_conn_t *c) {
+ ms_task_t *task;
+ ms_mlget_task_item_t *mlget_item;
+
+ while (1) {
+ if (c->remain_exec_num-- > 0) {
+ task = ms_get_task(c, false);
+ if (task->cmd == CMD_SET) /* just do it */ {
+ ms_mcd_set(c, task->item);
+ break;
+ } else {
+ assert(task->cmd == CMD_GET);
+ mlget_item = &c->mlget_task.mlget_item[c->mlget_task.mlget_num];
+ mlget_item->item = task->item;
+ mlget_item->verify = task->verify;
+ mlget_item->finish_verify = task->finish_verify;
+ mlget_item->get_miss = task->get_miss;
+ c->mlget_task.mlget_num++;
+
+ /* enough multi-get task items can be done */
+ if ((c->mlget_task.mlget_num >= ms_setting.mult_key_num)
+ || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
+ {
+ ms_mcd_mlget(c);
+ break;
+ }
+ }
+ } else {
+ if ((c->remain_exec_num <= 0) && (c->mlget_task.mlget_num > 0)) {
+ ms_mcd_mlget(c);
+ }
+ break;
+ }
+ }
+} /* ms_multi_getset_task_sch */
+
+/**
+ * calculate the difference value of two time points
+ *
+ * @param start_time, the start time
+ * @param end_time, the end time
+ *
+ * @return uint64_t, the difference value between start_time and end_time in us
+ */
+int64_t ms_time_diff(struct timeval *start_time, struct timeval *end_time) {
+ int64_t endtime = end_time->tv_sec * 1000000 + end_time->tv_usec;
+ int64_t starttime = start_time->tv_sec * 1000000 + start_time->tv_usec;
+
+ assert(endtime >= starttime);
+
+ return endtime - starttime;
+} /* ms_time_diff */
+
+/**
+ * after get the response from server for multi-get, the
+ * function update the state of the task and do data verify if
+ * necessary.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_update_multi_get_result(ms_conn_t *c) {
+ ms_mlget_task_item_t *mlget_item;
+ ms_task_item_t *item;
+ char *orignval = NULL;
+ char *orignkey = NULL;
+
+ if (c == NULL) {
+ return;
+ }
+ assert(c);
+
+ for (int i = 0; i < c->mlget_task.mlget_num; i++) {
+ mlget_item = &c->mlget_task.mlget_item[i];
+ item = mlget_item->item;
+ orignval = &ms_setting.char_block[item->value_offset];
+ orignkey = &ms_setting.char_block[item->key_suffix_offset];
+
+ /* update get miss counter */
+ if (mlget_item->get_miss) {
+ atomic_add_size(&ms_stats.get_misses, 1);
+ }
+
+ /* get nothing from server for this task item */
+ if (mlget_item->verify && !mlget_item->finish_verify) {
+ /* verify expire time if necessary */
+ if (item->exp_time > 0) {
+ struct timeval curr_time;
+ gettimeofday(&curr_time, NULL);
+
+ /* object doesn't expire but can't get it now */
+ if (curr_time.tv_sec - item->client_time < item->exp_time - EXPIRE_TIME_ERROR) {
+ atomic_add_size(&ms_stats.unexp_unget, 1);
+
+ if (ms_setting.verbose) {
+ char set_time[64];
+ char cur_time[64];
+ strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&item->client_time));
+ strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
+ fprintf(stderr,
+ "\n\t<%d expire time verification failed, object "
+ "doesn't expire but can't get it now\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\tset time: %s current time: %s "
+ "diff time: %d expire time: %d\n"
+ "\texpected data len: %d\n"
+ "\texpected data: %.*s\n"
+ "\treceived data: \n",
+ c->sfd, item->key_size, item->key_prefix,
+ item->key_size - (int) KEY_PREFIX_SIZE, orignkey, set_time, cur_time,
+ (int) (curr_time.tv_sec - item->client_time), item->exp_time, item->value_size,
+ item->value_size, orignval);
+ fflush(stderr);
+ }
+ }
+ } else {
+ atomic_add_size(&ms_stats.vef_miss, 1);
+
+ if (ms_setting.verbose) {
+ fprintf(stderr,
+ "\n<%d data verification failed\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\texpected data len: %d\n"
+ "\texpected data: %.*s\n"
+ "\treceived data: \n",
+ c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
+ orignkey, item->value_size, item->value_size, orignval);
+ fflush(stderr);
+ }
+ }
+ }
+ }
+ c->mlget_task.mlget_num = 0;
+ c->mlget_task.value_index = INVALID_OFFSET;
+} /* ms_update_multi_get_result */
+
+/**
+ * after get the response from server for single get, the
+ * function update the state of the task and do data verify if
+ * necessary.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ */
+static void ms_update_single_get_result(ms_conn_t *c, ms_task_item_t *item) {
+ char *orignval = NULL;
+ char *orignkey = NULL;
+
+ if ((c == NULL) || (item == NULL)) {
+ return;
+ }
+ assert(c);
+ assert(item);
+
+ orignval = &ms_setting.char_block[item->value_offset];
+ orignkey = &ms_setting.char_block[item->key_suffix_offset];
+
+ /* update get miss counter */
+ if ((c->precmd.cmd == CMD_GET) && c->curr_task.get_miss) {
+ atomic_add_size(&ms_stats.get_misses, 1);
+ }
+
+ /* get nothing from server for this task item */
+ if ((c->precmd.cmd == CMD_GET) && c->curr_task.verify && !c->curr_task.finish_verify) {
+ /* verify expire time if necessary */
+ if (item->exp_time > 0) {
+ struct timeval curr_time;
+ gettimeofday(&curr_time, NULL);
+
+ /* object doesn't expire but can't get it now */
+ if (curr_time.tv_sec - item->client_time < item->exp_time - EXPIRE_TIME_ERROR) {
+ atomic_add_size(&ms_stats.unexp_unget, 1);
+
+ if (ms_setting.verbose) {
+ char set_time[64];
+ char cur_time[64];
+ strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&item->client_time));
+ strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
+ fprintf(stderr,
+ "\n\t<%d expire time verification failed, object "
+ "doesn't expire but can't get it now\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\tset time: %s current time: %s "
+ "diff time: %d expire time: %d\n"
+ "\texpected data len: %d\n"
+ "\texpected data: %.*s\n"
+ "\treceived data: \n",
+ c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
+ orignkey, set_time, cur_time, (int) (curr_time.tv_sec - item->client_time),
+ item->exp_time, item->value_size, item->value_size, orignval);
+ fflush(stderr);
+ }
+ }
+ } else {
+ atomic_add_size(&ms_stats.vef_miss, 1);
+
+ if (ms_setting.verbose) {
+ fprintf(stderr,
+ "\n<%d data verification failed\n"
+ "\tkey len: %d\n"
+ "\tkey: %" PRIx64 " %.*s\n"
+ "\texpected data len: %d\n"
+ "\texpected data: %.*s\n"
+ "\treceived data: \n",
+ c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
+ orignkey, item->value_size, item->value_size, orignval);
+ fflush(stderr);
+ }
+ }
+ }
+} /* ms_update_single_get_result */
+
+/**
+ * after get the response from server for set the function
+ * update the state of the task and do data verify if necessary.
+ *
+ * @param c, pointer of the concurrency
+ * @param item, pointer of task item which includes the object
+ * information
+ */
+static void ms_update_set_result(ms_conn_t *c, ms_task_item_t *item) {
+ if ((c == NULL) || (item == NULL)) {
+ return;
+ }
+ assert(c);
+ assert(item);
+
+ if (c->precmd.cmd == CMD_SET) {
+ switch (c->precmd.retstat) {
+ case MCD_STORED:
+ if (item->value_offset == INVALID_OFFSET) {
+ /* first set with the same offset of key suffix */
+ item->value_offset = item->key_suffix_offset;
+ } else {
+ /* not first set, just increase the value offset */
+ item->value_offset += 1;
+ }
+
+ /* set successes, update counter */
+ c->set_cursor++;
+ c->curr_task.set_opt++;
+ c->curr_task.cycle_undo_set--;
+ break;
+
+ case MCD_SERVER_ERROR:
+ default:
+ break;
+ } /* switch */
+ }
+} /* ms_update_set_result */
+
+/**
+ * update the response time result
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_update_stat_result(ms_conn_t *c) {
+ bool get_miss = false;
+
+ if (c == NULL) {
+ return;
+ }
+ assert(c);
+
+ gettimeofday(&c->end_time, NULL);
+ uint64_t time_diff = (uint64_t) ms_time_diff(&c->start_time, &c->end_time);
+
+ pthread_mutex_lock(&ms_statistic.stat_mutex);
+
+ switch (c->precmd.cmd) {
+ case CMD_SET:
+ ms_record_event(&ms_statistic.set_stat, time_diff, false);
+ break;
+
+ case CMD_GET:
+ if (c->curr_task.get_miss) {
+ get_miss = true;
+ }
+ ms_record_event(&ms_statistic.get_stat, time_diff, get_miss);
+ break;
+
+ default:
+ break;
+ } /* switch */
+
+ ms_record_event(&ms_statistic.total_stat, time_diff, get_miss);
+ pthread_mutex_unlock(&ms_statistic.stat_mutex);
+} /* ms_update_stat_result */
+
+/**
+ * after get response from server for the current operation, and
+ * before doing the next operation, update the state of the
+ * current operation.
+ *
+ * @param c, pointer of the concurrency
+ */
+static void ms_update_task_result(ms_conn_t *c) {
+ ms_task_item_t *item;
+
+ if (c == NULL) {
+ return;
+ }
+ assert(c);
+
+ item = ms_get_cur_opt_item(c);
+ if (item == NULL) {
+ return;
+ }
+ assert(item);
+
+ ms_update_set_result(c, item);
+
+ if ((ms_setting.stat_freq > 0) && ((c->precmd.cmd == CMD_SET) || (c->precmd.cmd == CMD_GET))) {
+ ms_update_stat_result(c);
+ }
+
+ /* update multi-get task item */
+ if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
+ || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
+ {
+ ms_update_multi_get_result(c);
+ } else {
+ ms_update_single_get_result(c, item);
+ }
+} /* ms_update_task_result */
+
+/**
+ * run get and set operation
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_run_getset_task(ms_conn_t *c) {
+ /**
+ * extra one loop to get the last command return state. get the
+ * last command return state.
+ */
+ if ((c->remain_exec_num >= 0) && (c->remain_exec_num != c->exec_num)) {
+ ms_update_task_result(c);
+ }
+
+ /* multi-get */
+ if (ms_setting.mult_key_num > 1) {
+ /* operate next task item */
+ ms_multi_getset_task_sch(c);
+ } else {
+ /* operate next task item */
+ ms_single_getset_task_sch(c);
+ }
+
+ /* no task to do, exit */
+ if ((c->remain_exec_num == -1) || ms_global.time_out) {
+ return -1;
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_run_getset_task */
+
+/**
+ * the state machine call the function to execute task.
+ *
+ * @param c, pointer of the concurrency
+ *
+ * @return int, if success, return EXIT_SUCCESS, else return -1
+ */
+int ms_exec_task(struct conn *c) {
+ if (!ms_global.finish_warmup) {
+ ms_warmup_server(c);
+ } else {
+ if (ms_run_getset_task(c)) {
+ return -1;
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_exec_task */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_TASK_H
+#define MS_TASK_H
+
+#include <sys/types.h>
+#include <stdint.h>
+#if !defined(__cplusplus)
+# include <stdbool.h>
+#endif
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define UNIT_ITEMS_COUNT 1024 /* each window unit has 1024 items */
+#define KEY_PREFIX_SIZE (sizeof(uint64_t)) /* key prefix length: 8 bytes */
+#define INVALID_OFFSET (-1) /* invalid offset in the character table */
+#define FIXED_EXPIRE_TIME 60 /* default expire time is 60s */
+#define EXPIRE_TIME_ERROR 5 /* default expire time error is 5s */
+
+/* information of a task item(object) */
+typedef struct task_item {
+ uint64_t key_prefix; /* prefix of the key, 8 bytes, binary */
+ int key_size; /* key size */
+ int key_suffix_offset; /* suffix offset in the global character table */
+
+ int value_size; /* data size */
+ int value_offset; /* data offset in the global character table */
+
+ time_t client_time; /* the current client time */
+ int exp_time; /* expire time */
+} ms_task_item_t;
+
+/* task item for multi-get */
+typedef struct mlget_task_item {
+ ms_task_item_t *item; /* task item */
+ bool verify; /* whether verify data or not */
+ bool finish_verify; /* whether finish data verify or not */
+ bool get_miss; /* whether get miss or not */
+} ms_mlget_task_item_t;
+
+/* information of multi-get task */
+typedef struct mlget_task {
+ ms_mlget_task_item_t *mlget_item; /* multi-get task array */
+ int mlget_num; /* how many tasks in mlget_task array */
+ int value_index; /* the nth value received by the connect, for multi-get */
+} ms_mlget_task_t;
+
+/* structure used to store the state of the running task */
+typedef struct task {
+ int cmd; /* command name */
+ bool verify; /* whether verify data or not */
+ bool finish_verify; /* whether finish data verify or not */
+ bool get_miss; /* whether get miss or not */
+ ms_task_item_t *item; /* task item */
+
+ /* counter for command distribution adjustment */
+ uint64_t get_opt; /* number of total get operations */
+ uint64_t set_opt; /* number of total set operations, no including warmup set count */
+ int cycle_undo_get; /* number of undo get in an adjustment cycle */
+ int cycle_undo_set; /* number of undo set in an adjustment cycle */
+ uint64_t verified_get; /* number of total verified get operations */
+ uint64_t overwrite_set; /* number of total overwrite set operations */
+} ms_task_t;
+
+struct conn;
+
+/* the state machine call the function to execute task.*/
+int ms_exec_task(struct conn *c);
+
+/* calculate the difference value of two time points */
+int64_t ms_time_diff(struct timeval *start_time, struct timeval *end_time);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_TASK_H */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "mem_config.h"
+
+#if defined(HAVE_SYS_TIME_H)
+# include <sys/time.h>
+#endif
+
+#if defined(HAVE_TIME_H)
+# include <time.h>
+#endif
+
+#include "ms_thread.h"
+#include "ms_setting.h"
+#include "ms_atomic.h"
+
+/* global variable */
+pthread_key_t ms_thread_key;
+
+/* array of thread context structure, each thread has a thread context structure */
+static ms_thread_ctx_t *ms_thread_ctx;
+
+/* functions */
+static void ms_set_current_time(void);
+static void ms_check_sock_timeout(void);
+static void ms_clock_handler(const int fd, const short which, void *arg);
+static uint32_t ms_set_thread_cpu_affinity(uint32_t cpu);
+static int ms_setup_thread(ms_thread_ctx_t *thread_ctx);
+static void *ms_worker_libevent(void *arg);
+static void ms_create_worker(void *(*func)(void *), ms_thread_ctx_t *arg);
+
+/**
+ * time-sensitive callers can call it by hand with this,
+ * outside the normal ever-1-second timer
+ */
+static void ms_set_current_time() {
+ struct timeval timer;
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+
+ gettimeofday(&timer, NULL);
+ ms_thread->curr_time = (rel_time_t) timer.tv_sec;
+} /* ms_set_current_time */
+
+/**
+ * used to check whether UDP of command are waiting timeout
+ * by the ever-1-second timer
+ */
+static void ms_check_sock_timeout(void) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ ms_conn_t *c = NULL;
+ int time_diff = 0;
+
+ for (uint32_t i = 0; i < ms_thread->thread_ctx->nconns; i++) {
+ c = &ms_thread->conn[i];
+
+ if (c->udp) {
+ time_diff = (int) (ms_thread->curr_time - (rel_time_t) c->start_time.tv_sec);
+
+ /* wait time out */
+ if (time_diff > SOCK_WAIT_TIMEOUT) {
+ /* calculate dropped packets count */
+ if (c->recvpkt > 0) {
+ atomic_add_size(&ms_stats.pkt_drop, c->packets - c->recvpkt);
+ }
+
+ atomic_add_size(&ms_stats.udp_timeout, 1);
+ ms_reset_conn(c, true);
+ }
+ }
+ }
+} /* ms_check_sock_timeout */
+
+/* if disconnect, the ever-1-second timer will call this function to reconnect */
+static void ms_reconn_thread_socks(void) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ for (uint32_t i = 0; i < ms_thread->thread_ctx->nconns; i++) {
+ ms_reconn_socks(&ms_thread->conn[i]);
+ }
+} /* ms_reconn_thread_socks */
+
+/**
+ * the handler of the ever-1-second timer
+ *
+ * @param fd, the descriptors of the socket
+ * @param which, event flags
+ * @param arg, argument
+ */
+static void ms_clock_handler(const int fd, const short which, void *arg) {
+ ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
+ struct timeval t = {.tv_sec = 1, .tv_usec = 0};
+
+ UNUSED_ARGUMENT(fd);
+ UNUSED_ARGUMENT(which);
+ UNUSED_ARGUMENT(arg);
+
+ ms_set_current_time();
+
+ if (ms_thread->initialized) {
+ /* only delete the event if it's actually there. */
+ evtimer_del(&ms_thread->clock_event);
+ ms_check_sock_timeout();
+ } else {
+ ms_thread->initialized = true;
+ }
+
+ ms_reconn_thread_socks();
+
+ evtimer_set(&ms_thread->clock_event, ms_clock_handler, 0);
+ event_base_set(ms_thread->base, &ms_thread->clock_event);
+ evtimer_add(&ms_thread->clock_event, &t);
+} /* ms_clock_handler */
+
+/**
+ * used to bind thread to CPU if the system supports
+ *
+ * @param cpu, cpu index
+ *
+ * @return if success, return EXIT_SUCCESS, else return -1
+ */
+static uint32_t ms_set_thread_cpu_affinity(uint32_t cpu) {
+ uint32_t ret = 0;
+
+#ifdef HAVE_CPU_SET_T
+ cpu_set_t cpu_set;
+ CPU_ZERO(&cpu_set);
+ CPU_SET(cpu, &cpu_set);
+
+ if (sched_setaffinity(0, sizeof(cpu_set_t), &cpu_set) == -1) {
+ fprintf(stderr, "WARNING: Could not set CPU Affinity, continuing...\n");
+ ret = 1;
+ }
+#else
+ UNUSED_ARGUMENT(cpu);
+#endif
+
+ return ret;
+} /* ms_set_thread_cpu_affinity */
+
+/**
+ * Set up a thread's information.
+ *
+ * @param thread_ctx, pointer of the thread context structure
+ *
+ * @return if success, return EXIT_SUCCESS, else return -1
+ */
+static int ms_setup_thread(ms_thread_ctx_t *thread_ctx) {
+ ms_thread_t *ms_thread = (ms_thread_t *) calloc(sizeof(*ms_thread), 1);
+ pthread_setspecific(ms_thread_key, (void *) ms_thread);
+
+ ms_thread->thread_ctx = thread_ctx;
+ ms_thread->nactive_conn = thread_ctx->nconns;
+ ms_thread->initialized = false;
+ static ATOMIC uint32_t cnt = 0;
+
+ gettimeofday(&ms_thread->startup_time, NULL);
+
+ ms_thread->base = event_base_new();
+ if (ms_thread->base == NULL) {
+ if (atomic_add_32_nv(&cnt, 1) == 0) {
+ fprintf(stderr, "Can't allocate event base.\n");
+ }
+
+ return -1;
+ }
+
+ ms_thread->conn = (ms_conn_t *) malloc((size_t) thread_ctx->nconns * sizeof(ms_conn_t));
+ if (ms_thread->conn == NULL) {
+ if (atomic_add_32_nv(&cnt, 1) == 0) {
+ fprintf(stderr, "Can't allocate concurrency structure for thread descriptors.");
+ }
+
+ return -1;
+ }
+ memset(ms_thread->conn, 0, (size_t) thread_ctx->nconns * sizeof(ms_conn_t));
+
+ for (uint32_t i = 0; i < thread_ctx->nconns; i++) {
+ ms_thread->conn[i].conn_idx = i;
+ if (ms_setup_conn(&ms_thread->conn[i])) {
+ /* only output this error once */
+ if (atomic_add_32_nv(&cnt, 1) == 0) {
+ fprintf(stderr, "Initializing connection failed.\n");
+ }
+
+ return -1;
+ }
+ }
+
+ return EXIT_SUCCESS;
+} /* ms_setup_thread */
+
+/**
+ * Worker thread: main event loop
+ *
+ * @param arg, the pointer of argument
+ *
+ * @return void*
+ */
+static void *ms_worker_libevent(void *arg) {
+ ms_thread_t *ms_thread = NULL;
+ ms_thread_ctx_t *thread_ctx = (ms_thread_ctx_t *) arg;
+
+ /**
+ * If system has more than one cpu and supports set cpu
+ * affinity, try to bind each thread to a cpu core;
+ */
+ if (ms_setting.ncpu > 1) {
+ ms_set_thread_cpu_affinity(thread_ctx->thd_idx % ms_setting.ncpu);
+ }
+
+ if (ms_setup_thread(thread_ctx)) {
+ exit(1);
+ }
+
+ /* each thread with a timer */
+ ms_clock_handler(0, 0, 0);
+
+ pthread_mutex_lock(&ms_global.init_lock.lock);
+ ms_global.init_lock.count++;
+ pthread_cond_signal(&ms_global.init_lock.cond);
+ pthread_mutex_unlock(&ms_global.init_lock.lock);
+
+ ms_thread = pthread_getspecific(ms_thread_key);
+ event_base_loop(ms_thread->base, 0);
+ event_base_free(ms_thread->base);
+ free(ms_thread);
+
+ return NULL;
+} /* ms_worker_libevent */
+
+/**
+ * Creates a worker thread.
+ *
+ * @param func, the callback function
+ * @param arg, the argument to pass to the callback function
+ */
+static void ms_create_worker(void *(*func)(void *), ms_thread_ctx_t *arg) {
+ pthread_attr_t attr;
+ int ret;
+
+ pthread_attr_init(&attr);
+
+ if ((ret = pthread_create(&arg->pth_id, &attr, func, arg))) {
+ fprintf(stderr, "Can't create thread: %s.\n", strerror(ret));
+ exit(1);
+ }
+} /* ms_create_worker */
+
+/* initialize threads */
+void ms_thread_init() {
+ ms_thread_ctx =
+ (ms_thread_ctx_t *) malloc(sizeof(ms_thread_ctx_t) * (size_t) ms_setting.nthreads);
+ if (ms_thread_ctx == NULL) {
+ fprintf(stderr, "Can't allocate thread descriptors.");
+ exit(1);
+ }
+
+ for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
+ ms_thread_ctx[i].thd_idx = i;
+ ms_thread_ctx[i].nconns = ms_setting.nconns / ms_setting.nthreads;
+
+ /**
+ * If only one server, all the connections in all threads
+ * connects the same server. For support multi-servers, simple
+ * distribute thread to server.
+ */
+ ms_thread_ctx[i].srv_idx = i % ms_setting.srv_cnt;
+ ms_thread_ctx[i].tps_perconn = ms_setting.expected_tps / (int) ms_setting.nconns;
+ ms_thread_ctx[i].exec_num_perconn = ms_setting.exec_num / ms_setting.nconns;
+ }
+
+ if (pthread_key_create(&ms_thread_key, NULL)) {
+ fprintf(stderr, "Can't create pthread keys. Major malfunction!\n");
+ exit(1);
+ }
+ /* Create threads after we've done all the epoll setup. */
+ for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
+ ms_create_worker(ms_worker_libevent, &ms_thread_ctx[i]);
+ }
+} /* ms_thread_init */
+
+/* cleanup some resource of threads when all the threads exit */
+void ms_thread_cleanup() {
+ for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
+ pthread_join(ms_thread_ctx[i].pth_id, NULL);
+ }
+ if (ms_thread_ctx) {
+ free(ms_thread_ctx);
+ }
+ pthread_key_delete(ms_thread_key);
+} /* ms_thread_cleanup */
--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef MS_THREAD_H
+#define MS_THREAD_H
+
+#include <pthread.h>
+#include <sched.h>
+#include "ms_conn.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Time relative to server start. Smaller than time_t on 64-bit systems. */
+typedef unsigned int rel_time_t;
+
+/* Used to store the context of each thread */
+typedef struct thread_ctx {
+ uint32_t thd_idx; /* the thread index */
+ uint32_t nconns; /* how many connections included by the thread */
+ uint32_t srv_idx; /* index of the thread */
+ int tps_perconn; /* expected throughput per connection */
+ int64_t exec_num_perconn; /* execute number per connection */
+ pthread_t pth_id;
+} ms_thread_ctx_t;
+
+/* Used to store the private variables of each thread */
+typedef struct thread {
+ ms_conn_t *conn; /* conn array to store all the conn in the thread */
+ uint32_t nactive_conn; /* how many connects are active */
+
+ ms_thread_ctx_t *thread_ctx; /* thread context from the caller */
+ struct event_base *base; /* libevent handler created by this thread */
+
+ rel_time_t curr_time; /* current time */
+ struct event clock_event; /* clock event to time each one second */
+ bool initialized; /* whether clock_event has been initialized */
+
+ struct timeval startup_time; /* start time of the thread */
+} ms_thread_t;
+
+/* initialize threads */
+void ms_thread_init(void);
+
+/* cleanup some resource of threads when all the threads exit */
+void ms_thread_cleanup(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of MS_THREAD_H */
target_link_libraries(memcapable PRIVATE Threads::Threads)
target_link_libraries(memping PRIVATE libmemcachedutil)
target_link_libraries(memslap PRIVATE Threads::Threads)
-
-# contrib
-
-add_subdirectory(contrib)
+++ /dev/null
-if(HAVE_MEMASLAP)
- add_executable(memaslap memaslap.c
- memaslap/ms_conn.c
- memaslap/ms_setting.c
- memaslap/ms_sigsegv.c
- memaslap/ms_stats.c
- memaslap/ms_task.c
- memaslap/ms_thread.c)
- target_include_directories(memaslap PRIVATE
- memaslap
- ${CMAKE_SOURCE_DIR}/include
- ${CMAKE_BINARY_DIR}/include
- ${CMAKE_SOURCE_DIR}/src
- ${CMAKE_BINARY_DIR}/src
- ${CMAKE_BINARY_DIR})
- target_link_libraries(memaslap PUBLIC libmemcached Threads::Threads ${LIBEVENT} m)
- set_property(TARGET memaslap PROPERTY C_STANDARD 11)
- if(CMAKE_INSTALL_RPATH)
- set_target_properties(${CLIENT} PROPERTIES
- INSTALL_RPATH ${CMAKE_INSTALL_RPATH}/../${CMAKE_INSTALL_LIBDIR})
- endif()
- install(TARGETS memaslap
- RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-endif()
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <getopt.h>
-#include <limits.h>
-
-#if defined(HAVE_SYS_TIME_H)
-# include <sys/time.h>
-#endif
-
-#if defined(HAVE_TIME_H)
-# include <time.h>
-#endif
-
-#include "ms_atomic.h"
-#include "ms_sigsegv.h"
-#include "ms_setting.h"
-#include "ms_thread.h"
-
-/* global structure */
-ms_global_t ms_global;
-
-/* global stats information structure */
-ms_stats_t ms_stats;
-
-/* global statistic structure */
-ms_statistic_t ms_statistic;
-
-#define PROGRAM_NAME "memaslap"
-#define PROGRAM_DESCRIPTION "Generates workload against memcached servers."
-
-#ifdef __sun
-/* For some odd reason the option struct on solaris defines the argument
- * as char* and not const char*
- */
-# define OPTIONSTRING char *
-#else
-# define OPTIONSTRING const char *
-#endif
-
-/* options */
-static struct option long_options[] = {
- {(OPTIONSTRING) "servers", required_argument, NULL, OPT_SERVERS},
- {(OPTIONSTRING) "threads", required_argument, NULL, OPT_THREAD_NUMBER},
- {(OPTIONSTRING) "concurrency", required_argument, NULL, OPT_CONCURRENCY},
- {(OPTIONSTRING) "conn_sock", required_argument, NULL, OPT_SOCK_PER_CONN},
- {(OPTIONSTRING) "execute_number", required_argument, NULL, OPT_EXECUTE_NUMBER},
- {(OPTIONSTRING) "time", required_argument, NULL, OPT_TIME},
- {(OPTIONSTRING) "cfg_cmd", required_argument, NULL, OPT_CONFIG_CMD},
- {(OPTIONSTRING) "win_size", required_argument, NULL, OPT_WINDOW_SIZE},
- {(OPTIONSTRING) "fixed_size", required_argument, NULL, OPT_FIXED_LTH},
- {(OPTIONSTRING) "verify", required_argument, NULL, OPT_VERIFY},
- {(OPTIONSTRING) "division", required_argument, NULL, OPT_GETS_DIVISION},
- {(OPTIONSTRING) "stat_freq", required_argument, NULL, OPT_STAT_FREQ},
- {(OPTIONSTRING) "exp_verify", required_argument, NULL, OPT_EXPIRE},
- {(OPTIONSTRING) "overwrite", required_argument, NULL, OPT_OVERWRITE},
- {(OPTIONSTRING) "reconnect", no_argument, NULL, OPT_RECONNECT},
- {(OPTIONSTRING) "udp", no_argument, NULL, OPT_UDP},
- {(OPTIONSTRING) "facebook", no_argument, NULL, OPT_FACEBOOK_TEST},
- {(OPTIONSTRING) "binary", no_argument, NULL, OPT_BINARY_PROTOCOL},
- {(OPTIONSTRING) "tps", required_argument, NULL, OPT_TPS},
- {(OPTIONSTRING) "rep_write", required_argument, NULL, OPT_REP_WRITE_SRV},
- {(OPTIONSTRING) "verbose", no_argument, NULL, OPT_VERBOSE},
- {(OPTIONSTRING) "help", no_argument, NULL, OPT_HELP},
- {(OPTIONSTRING) "version", no_argument, NULL, OPT_VERSION},
- {0, 0, 0, 0},
-};
-
-/* Prototypes */
-static void ms_sync_lock_init(void);
-static void ms_sync_lock_destroy(void);
-static void ms_global_struct_init(void);
-static void ms_global_struct_destroy(void);
-static void ms_version_command(const char *command_name);
-static const char *ms_lookup_help(ms_options_t option);
-static int64_t ms_parse_time(void);
-static int64_t ms_parse_size(void);
-static void ms_options_parse(int argc, char *argv[]);
-static int ms_check_para(void);
-static void ms_statistic_init(void);
-static void ms_stats_init(void);
-static void ms_print_statistics(int in_time);
-static void ms_print_memaslap_stats(struct timeval *start_time, struct timeval *end_time);
-static void ms_monitor_slap_mode(void);
-
-/**
- * output the help information
- *
- * @param command_name, the string of this process
- * @param description, description of this process
- * @param long_options, global options array
- */
-static void ms_help_command(const char *command_name, const char *description) {
- char *help_message = NULL;
-
- printf("%s v%u.%u\n", command_name, 1U, 0U);
- printf(" %s\n\n", description);
- printf("Usage:\n"
- " memaslap -hV | -s servers [-F config_file] [-t time | -x exe_num] [...]\n\n"
- "Options:\n");
-
- for (int x = 0; long_options[x].name; x++) {
- printf(" -%c, --%s%c\n", long_options[x].val, long_options[x].name,
- long_options[x].has_arg ? '=' : ' ');
-
- if ((help_message = (char *) ms_lookup_help(long_options[x].val))) {
- printf(" %s\n", help_message);
- }
- }
-
- printf("\nExamples:\n"
- " memaslap -s 127.0.0.1:11211 -S 5s\n"
- " memaslap -s 127.0.0.1:11211 -t 2m -v 0.2 -e 0.05 -b\n"
- " memaslap -s 127.0.0.1:11211 -F config -t 2m -w 40k -S 20s -o 0.2\n"
- " memaslap -s 127.0.0.1:11211 -F config -t 2m -T 4 -c 128 -d 20 -P 40k\n"
- " memaslap -s 127.0.0.1:11211 -F config -t 2m -d 50 -a -n 40\n"
- " memaslap -s 127.0.0.1:11211,127.0.0.1:11212 -F config -t 2m\n"
- " memaslap -s 127.0.0.1:11211,127.0.0.1:11212 -F config -t 2m -p 2\n\n");
-} /* ms_help_command */
-
-/* initialize the global locks */
-static void ms_sync_lock_init() {
- ms_global.init_lock.count = 0;
- pthread_mutex_init(&ms_global.init_lock.lock, NULL);
- pthread_cond_init(&ms_global.init_lock.cond, NULL);
-
- ms_global.warmup_lock.count = 0;
- pthread_mutex_init(&ms_global.warmup_lock.lock, NULL);
- pthread_cond_init(&ms_global.warmup_lock.cond, NULL);
-
- ms_global.run_lock.count = 0;
- pthread_mutex_init(&ms_global.run_lock.lock, NULL);
- pthread_cond_init(&ms_global.run_lock.cond, NULL);
-
- pthread_mutex_init(&ms_global.quit_mutex, NULL);
- pthread_mutex_init(&ms_global.seq_mutex, NULL);
-} /* ms_sync_lock_init */
-
-/* destroy the global locks */
-static void ms_sync_lock_destroy() {
- pthread_mutex_destroy(&ms_global.init_lock.lock);
- pthread_cond_destroy(&ms_global.init_lock.cond);
-
- pthread_mutex_destroy(&ms_global.warmup_lock.lock);
- pthread_cond_destroy(&ms_global.warmup_lock.cond);
-
- pthread_mutex_destroy(&ms_global.run_lock.lock);
- pthread_cond_destroy(&ms_global.run_lock.cond);
-
- pthread_mutex_destroy(&ms_global.quit_mutex);
- pthread_mutex_destroy(&ms_global.seq_mutex);
-
- if (ms_setting.stat_freq > 0) {
- pthread_mutex_destroy(&ms_statistic.stat_mutex);
- }
-} /* ms_sync_lock_destroy */
-
-/* initialize the global structure */
-static void ms_global_struct_init() {
- ms_sync_lock_init();
- ms_global.finish_warmup = false;
- ms_global.time_out = false;
-}
-
-/* destroy the global structure */
-static void ms_global_struct_destroy() {
- ms_sync_lock_destroy();
-}
-
-/**
- * output the version information
- *
- * @param command_name, the string of this process
- */
-static void ms_version_command(const char *command_name) {
- printf("%s v%u.%u\n", command_name, 1U, 0U);
- exit(0);
-}
-
-/**
- * get the description of the option
- *
- * @param option, option of command line
- *
- * @return char*, description of the command option
- */
-static const char *ms_lookup_help(ms_options_t option) {
- switch (option) {
- case OPT_SERVERS:
- return "List one or more servers to connect. Servers count must be less than\n"
- " threads count. e.g.: --servers=localhost:1234,localhost:11211";
-
- case OPT_VERSION:
- return "Display the version of the application and then exit.";
-
- case OPT_HELP:
- return "Display this message and then exit.";
-
- case OPT_EXECUTE_NUMBER:
- return "Number of operations(get and set) to execute for the\n"
- " given test. Default 1000000.";
-
- case OPT_THREAD_NUMBER:
- return "Number of threads to startup, better equal to CPU numbers. Default 8.";
-
- case OPT_CONCURRENCY:
- return "Number of concurrency to simulate with load. Default 128.";
-
- case OPT_FIXED_LTH:
- return "Fixed length of value.";
-
- case OPT_VERIFY:
- return "The proportion of date verification, e.g.: --verify=0.01";
-
- case OPT_GETS_DIVISION:
- return "Number of keys to multi-get once. Default 1, means single get.";
-
- case OPT_TIME:
- return "How long the test to run, suffix: s-seconds, m-minutes, h-hours,\n"
- " d-days e.g.: --time=2h.";
-
- case OPT_CONFIG_CMD:
- return "Load the configure file to get command,key and value distribution list.";
-
- case OPT_WINDOW_SIZE:
- return "Task window size of each concurrency, suffix: K, M e.g.: --win_size=10k.\n"
- " Default 10k.";
-
- case OPT_UDP:
- return "UDP support, by default memaslap uses TCP; TCP port and UDP port of\n"
- " server must be same.";
-
- case OPT_EXPIRE:
- return "The proportion of objects with expire time, e.g.: --exp_verify=0.01.\n"
- " Default no object with expire time";
-
- case OPT_OVERWRITE:
- return "The proportion of objects need overwrite, e.g.: --overwrite=0.01.\n"
- " Default never overwrite object.";
-
- case OPT_STAT_FREQ:
- return "Frequency of dumping statistic information. suffix: s-seconds,\n"
- " m-minutes, e.g.: --resp_freq=10s.";
-
- case OPT_SOCK_PER_CONN:
- return "Number of TCP socks per concurrency. Default 1.";
-
- case OPT_RECONNECT:
- return "Reconnect support, when connection is closed it will be reconnected.";
-
- case OPT_VERBOSE:
- return "Whether it outputs detailed information when verification fails.";
-
- case OPT_FACEBOOK_TEST:
- return "Whether it enables facebook test feature, set with TCP and multi-get with UDP.";
-
- case OPT_BINARY_PROTOCOL:
- return "Whether it enables binary protocol. Default with ASCII protocol.";
-
- case OPT_TPS:
- return "Expected throughput, suffix: K, e.g.: --tps=10k.";
-
- case OPT_REP_WRITE_SRV:
- return "The first nth servers can write data, e.g.: --rep_write=2.";
-
- default:
- return "Forgot to document this option :)";
- } /* switch */
-} /* ms_lookup_help */
-
-/* used to parse the time string */
-static int64_t ms_parse_time() {
- int64_t ret = 0;
- char unit = optarg[strlen(optarg) - 1];
-
- optarg[strlen(optarg) - 1] = '\0';
- ret = atoi(optarg);
-
- switch (unit) {
- case 'd':
- case 'D':
- ret *= 24;
- /* fall through */
- case 'h':
- case 'H':
- ret *= 60;
- /* fall through */
- case 'm':
- case 'M':
- ret *= 60;
- /* fall through */
- case 's':
- case 'S':
- break;
-
- default:
- ret = -1;
- break;
- } /* switch */
-
- return ret;
-} /* ms_parse_time */
-
-/* used to parse the size string */
-static int64_t ms_parse_size() {
- int64_t ret = -1;
- char unit = optarg[strlen(optarg) - 1];
-
- optarg[strlen(optarg) - 1] = '\0';
- errno = 0;
- ret = strtoll(optarg, (char **) NULL, 10);
- if (errno) {
- fprintf(stderr, "strtoll(optarg,..): %s\n", strerror(errno));
- exit(1);
- }
-
- switch (unit) {
- case 'k':
- case 'K':
- ret *= 1024;
- break;
-
- case 'm':
- case 'M':
- ret *= 1024 * 1024;
- break;
-
- case 'g':
- case 'G':
- ret *= 1024 * 1024 * 1024;
- break;
-
- default:
- ret = -1;
- break;
- } /* switch */
-
- return ret;
-} /* ms_parse_size */
-
-/* used to parse the options of command line */
-static void ms_options_parse(int argc, char *argv[]) {
- int option_index = 0;
- int option_rv;
-
- while ((option_rv = getopt_long(argc, argv,
- "VhURbaBs:x:T:c:X:v:d:"
- "t:S:F:w:e:o:n:P:p:",
- long_options, &option_index))
- != -1)
- {
- switch (option_rv) {
- case 0:
- break;
-
- case OPT_VERSION: /* --version or -V */
- ms_version_command(PROGRAM_NAME);
- break;
-
- case OPT_HELP: /* --help or -h */
- ms_help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION);
- exit(0);
- break;
-
- case OPT_SERVERS: /* --servers or -s */
- ms_setting.srv_str = strdup(optarg);
- break;
-
- case OPT_CONCURRENCY: /* --concurrency or -c */
- errno = 0;
- ms_setting.nconns = (uint32_t) strtoul(optarg, (char **) NULL, 10);
- if (ms_setting.nconns <= 0 || errno) {
- fprintf(stderr, "Concurrency must be greater than 0.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_EXECUTE_NUMBER: /* --execute_number or -x */
- errno = 0;
- ms_setting.exec_num = (int) strtol(optarg, (char **) NULL, 10);
- if (ms_setting.exec_num <= 0 || errno) {
- fprintf(stderr, "Execute number must be greater than 0.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_THREAD_NUMBER: /* --threads or -T */
- errno = 0;
- ms_setting.nthreads = (uint32_t) strtoul(optarg, (char **) NULL, 10);
- if (ms_setting.nthreads <= 0 || errno) {
- fprintf(stderr, "Threads number must be greater than 0.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_FIXED_LTH: /* --fixed_size or -X */
- errno = 0;
- ms_setting.fixed_value_size = (size_t) strtoull(optarg, (char **) NULL, 10);
- if ((ms_setting.fixed_value_size <= 0 || errno)
- || (ms_setting.fixed_value_size > MAX_VALUE_SIZE))
- {
- fprintf(stderr, "Value size must be between 0 and 1M.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_VERIFY: /* --verify or -v */
- ms_setting.verify_percent = atof(optarg);
- if ((ms_setting.verify_percent <= 0) || (ms_setting.verify_percent > 1.0)) {
- fprintf(stderr,
- "Data verification rate must be "
- "greater than 0 and less than 1.0. :-)\n");
- exit(1);
- }
- break;
-
- case OPT_GETS_DIVISION: /* --division or -d */
- errno = 0;
- ms_setting.mult_key_num = (int) strtol(optarg, (char **) NULL, 10);
- if (ms_setting.mult_key_num <= 0 || errno) {
- fprintf(stderr, "Multi-get key number must be greater than 0.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_TIME: /* --time or -t */
- ms_setting.run_time = (int) ms_parse_time();
- if (ms_setting.run_time == -1) {
- fprintf(stderr,
- "Please specify the run time. :-)\n"
- "'s' for second, 'm' for minute, 'h' for hour, "
- "'d' for day. e.g.: --time=24h (means 24 hours).\n");
- exit(1);
- }
-
- if (ms_setting.run_time == 0) {
- fprintf(stderr, "Running time can not be 0. :-)\n");
- exit(1);
- }
- break;
-
- case OPT_CONFIG_CMD: /* --cfg_cmd or -F */
- ms_setting.cfg_file = strdup(optarg);
- break;
-
- case OPT_WINDOW_SIZE: /* --win_size or -w */
- ms_setting.win_size = (size_t) ms_parse_size();
- if (ms_setting.win_size == (size_t) -1) {
- fprintf(stderr,
- "Please specify the item window size. :-)\n"
- "e.g.: --win_size=10k (means 10k task window size).\n");
- exit(1);
- }
- break;
-
- case OPT_UDP: /* --udp or -U*/
- ms_setting.udp = true;
- break;
-
- case OPT_EXPIRE: /* --exp_verify or -e */
- ms_setting.exp_ver_per = atof(optarg);
- if ((ms_setting.exp_ver_per <= 0) || (ms_setting.exp_ver_per > 1.0)) {
- fprintf(stderr,
- "Expire time verification rate must be "
- "greater than 0 and less than 1.0. :-)\n");
- exit(1);
- }
- break;
-
- case OPT_OVERWRITE: /* --overwrite or -o */
- ms_setting.overwrite_percent = atof(optarg);
- if ((ms_setting.overwrite_percent <= 0) || (ms_setting.overwrite_percent > 1.0)) {
- fprintf(stderr,
- "Objects overwrite rate must be "
- "greater than 0 and less than 1.0. :-)\n");
- exit(1);
- }
- break;
-
- case OPT_STAT_FREQ: /* --stat_freq or -S */
- ms_setting.stat_freq = (int) ms_parse_time();
- if (ms_setting.stat_freq == -1) {
- fprintf(stderr,
- "Please specify the frequency of dumping "
- "statistic information. :-)\n"
- "'s' for second, 'm' for minute, 'h' for hour, "
- "'d' for day. e.g.: --time=24h (means 24 hours).\n");
- exit(1);
- }
-
- if (ms_setting.stat_freq == 0) {
- fprintf(stderr,
- "The frequency of dumping statistic information "
- "can not be 0. :-)\n");
- exit(1);
- }
- break;
-
- case OPT_SOCK_PER_CONN: /* --conn_sock or -n */
- errno = 0;
- ms_setting.sock_per_conn = (uint32_t) strtoul(optarg, (char **) NULL, 10);
- if (ms_setting.sock_per_conn <= 0 || errno) {
- fprintf(stderr,
- "Number of socks of each concurrency "
- "must be greater than 0.:-)\n");
- exit(1);
- }
- break;
-
- case OPT_RECONNECT: /* --reconnect or -R */
- ms_setting.reconnect = true;
- break;
-
- case OPT_VERBOSE: /* --verbose or -b */
- ms_setting.verbose = true;
- break;
-
- case OPT_FACEBOOK_TEST: /* --facebook or -a */
- ms_setting.facebook_test = true;
- break;
-
- case OPT_BINARY_PROTOCOL: /* --binary or -B */
- ms_setting.binary_prot_ = true;
- break;
-
- case OPT_TPS: /* --tps or -P */
- ms_setting.expected_tps = (int) ms_parse_size();
- if (ms_setting.expected_tps == -1) {
- fprintf(stderr,
- "Please specify the item expected throughput. :-)\n"
- "e.g.: --tps=10k (means 10k throughput).\n");
- exit(1);
- }
- break;
-
- case OPT_REP_WRITE_SRV: /* --rep_write or -p */
- errno = 0;
- ms_setting.rep_write_srv = (uint32_t) strtoul(optarg, (char **) NULL, 10);
- if (ms_setting.rep_write_srv <= 0 || errno) {
- fprintf(stderr,
- "Number of replication writing server must be greater "
- "than 0.:-)\n");
- exit(1);
- }
- break;
-
- case '?':
- /* getopt_long already printed an error message. */
- exit(1);
-
- default:
- abort();
- } /* switch */
- }
-} /* ms_options_parse */
-
-static int ms_check_para() {
- if (ms_setting.srv_str == NULL) {
- char *temp;
-
- if ((temp = getenv("MEMCACHED_SERVERS"))) {
- ms_setting.srv_str = strdup(temp);
- } else {
- fprintf(stderr, "No servers provided\n\n");
- return -1;
- }
- }
-
- if (ms_setting.nconns % (uint32_t) ms_setting.nthreads) {
- fprintf(stderr, "Concurrency must be the multiples of threads count.\n");
- return -1;
- }
-
- if (ms_setting.win_size % UNIT_ITEMS_COUNT) {
- fprintf(stderr, "Window size must be the multiples of 1024.\n\n");
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_check_para */
-
-/* initialize the statistic structure */
-static void ms_statistic_init() {
- pthread_mutex_init(&ms_statistic.stat_mutex, NULL);
- ms_init_stats(&ms_statistic.get_stat, "Get");
- ms_init_stats(&ms_statistic.set_stat, "Set");
- ms_init_stats(&ms_statistic.total_stat, "Total");
-} /* ms_statistic_init */
-
-/* initialize the global state structure */
-static void ms_stats_init() {
- memset(&ms_stats, 0, sizeof(ms_stats_t));
- if (ms_setting.stat_freq > 0) {
- ms_statistic_init();
- }
-} /* ms_stats_init */
-
-/* use to output the statistic */
-static void ms_print_statistics(int in_time) {
- int obj_size = (int) (ms_setting.avg_key_size + ms_setting.avg_val_size);
-
- printf("\033[1;1H\033[2J\n");
- ms_dump_format_stats(&ms_statistic.get_stat, in_time, ms_setting.stat_freq, obj_size);
- ms_dump_format_stats(&ms_statistic.set_stat, in_time, ms_setting.stat_freq, obj_size);
- ms_dump_format_stats(&ms_statistic.total_stat, in_time, ms_setting.stat_freq, obj_size);
-} /* ms_print_statistics */
-
-/* used to print the states of memaslap */
-static void ms_print_memaslap_stats(struct timeval *start_time, struct timeval *end_time) {
- char buf[0x2000];
- char *pos = buf;
-
- pos += snprintf(pos, sizeof(buf), "cmd_get: %lu\n", (unsigned long) ms_stats.cmd_get);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "cmd_set: %lu\n",
- (unsigned long) ms_stats.cmd_set);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "get_misses: %lu\n",
- (unsigned long) ms_stats.get_misses);
-
- if (ms_setting.verify_percent > 0) {
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "verify_misses: %lu\n",
- (unsigned long) ms_stats.vef_miss);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "verify_failed: %lu\n",
- (unsigned long) ms_stats.vef_failed);
- }
-
- if (ms_setting.exp_ver_per > 0) {
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "expired_get: %lu\n",
- (unsigned long) ms_stats.exp_get);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "unexpired_unget: %lu\n",
- (unsigned long) ms_stats.unexp_unget);
- }
-
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "written_bytes: %lu\n",
- (unsigned long) ms_stats.bytes_written);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "read_bytes: %lu\n",
- (unsigned long) ms_stats.bytes_read);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "object_bytes: %lu\n",
- (unsigned long) ms_stats.obj_bytes);
-
- if (ms_setting.udp || ms_setting.facebook_test) {
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "packet_disorder: %lu\n",
- (unsigned long) ms_stats.pkt_disorder);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "packet_drop: %lu\n",
- (unsigned long) ms_stats.pkt_drop);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf), "udp_timeout: %lu\n",
- (unsigned long) ms_stats.udp_timeout);
- }
-
- if (ms_setting.stat_freq > 0) {
- ms_dump_stats(&ms_statistic.get_stat);
- ms_dump_stats(&ms_statistic.set_stat);
- ms_dump_stats(&ms_statistic.total_stat);
- }
-
- int64_t time_diff = ms_time_diff(start_time, end_time);
- pos += snprintf(pos, sizeof(buf) - (size_t)(pos - buf),
- "\nRun time: %.1fs Ops: %llu TPS: %.0Lf Net_rate: %.1fM/s\n",
- (double) time_diff / 1000000,
- (unsigned long long) (ms_stats.cmd_get + ms_stats.cmd_set),
- (ms_stats.cmd_get + ms_stats.cmd_set) / ((long double) time_diff / 1000000),
- (double) (ms_stats.bytes_written + ms_stats.bytes_read) / 1024 / 1024
- / ((double) time_diff / 1000000));
- assert(pos <= (buf + sizeof(buf)));
-
- fwrite(buf, 1, pos - buf, stdout);
- fflush(stdout);
-} /* ms_print_memaslap_stats */
-
-/* the loop of the main thread, wait the work threads to complete */
-static void ms_monitor_slap_mode() {
- struct timeval start_time, end_time;
-
- /* Wait all the threads complete initialization. */
- pthread_mutex_lock(&ms_global.init_lock.lock);
- while (ms_global.init_lock.count < ms_setting.nthreads) {
- pthread_cond_wait(&ms_global.init_lock.cond, &ms_global.init_lock.lock);
- }
- pthread_mutex_unlock(&ms_global.init_lock.lock);
-
- /* only when there is no set operation it need warm up */
- if (ms_setting.cmd_distr[CMD_SET].cmd_prop < PROP_ERROR) {
- /* Wait all the connects complete warm up. */
- pthread_mutex_lock(&ms_global.warmup_lock.lock);
- while (ms_global.warmup_lock.count < ms_setting.nconns) {
- pthread_cond_wait(&ms_global.warmup_lock.cond, &ms_global.warmup_lock.lock);
- }
- pthread_mutex_unlock(&ms_global.warmup_lock.lock);
- }
- ms_global.finish_warmup = true;
-
- /* running in "run time" mode, user specify run time */
- if (ms_setting.run_time > 0) {
- int second = 0;
- gettimeofday(&start_time, NULL);
- while (1) {
- sleep(1);
- second++;
-
- if ((ms_setting.stat_freq > 0) && (second % ms_setting.stat_freq == 0)
- && (ms_stats.active_conns >= ms_setting.nconns) && (ms_stats.active_conns <= INT_MAX))
- {
- ms_print_statistics(second);
- }
-
- if (ms_setting.run_time <= second) {
- ms_global.time_out = true;
- break;
- }
-
- /* all connections disconnect */
- if ((second > 5) && (ms_stats.active_conns == 0)) {
- break;
- }
- }
- gettimeofday(&end_time, NULL);
- sleep(1); /* wait all threads clean up */
- } else {
- /* running in "execute number" mode, user specify execute number */
- gettimeofday(&start_time, NULL);
-
- /*
- * We loop until we know that all connects have cleaned up.
- */
- pthread_mutex_lock(&ms_global.run_lock.lock);
- while (ms_global.run_lock.count < ms_setting.nconns) {
- pthread_cond_wait(&ms_global.run_lock.cond, &ms_global.run_lock.lock);
- }
- pthread_mutex_unlock(&ms_global.run_lock.lock);
-
- gettimeofday(&end_time, NULL);
- }
-
- ms_print_memaslap_stats(&start_time, &end_time);
-} /* ms_monitor_slap_mode */
-
-/* the main function */
-int main(int argc, char *argv[]) {
- srandom((unsigned int) time(NULL));
- ms_global_struct_init();
-
- /* initialization */
- ms_setting_init_pre();
- ms_options_parse(argc, argv);
- if (ms_check_para()) {
- ms_help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION);
- exit(1);
- }
- ms_setting_init_post();
- ms_stats_init();
- ms_thread_init();
-
- /* waiting work thread complete its task */
- ms_monitor_slap_mode();
-
- /* clean up */
- ms_thread_cleanup();
- ms_global_struct_destroy();
- ms_setting_cleanup();
-
- return EXIT_SUCCESS;
-} /* main */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef CLIENTS_MS_ATOMIC_H
-#define CLIENTS_MS_ATOMIC_H
-
-#include "mem_config.h"
-
-#if defined(__SUNPRO_C) || defined(HAVE_ATOMIC_ADD_NV)
-# define ATOMIC volatile
-# define _KERNEL
-# include <atomic.h>
-# if SIZEOF_SIZE_T == 8
-# define atomic_add_size(X, Y) atomic_add_64((X), (Y))
-# else
-# define atomic_add_size(X, Y) atomic_add_32((X), (Y))
-# endif
-# undef _KERNEL
-
-#elif HAVE_C_STDATOMIC
-# define ATOMIC _Atomic
-# include <stdatomic.h>
-# define atomic_dec_32(X) atomic_fetch_sub(X,1)
-# define atomic_add_32 atomic_fetch_add
-# define atomic_add_32_nv(X,Y) (atomic_fetch_add(X,Y)+(Y))
-# define atomic_add_size atomic_fetch_add
-
-#elif HAVE_BUILTIN_ATOMIC
-# define ATOMIC
-# define atomic_dec_32(X) BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_sub(X,1)
-# define atomic_add_32 BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_add
-# define atomic_add_32_nv BUILTIN_ATOMIC_PREFIX ## _atomic_add_fetch(X,Y)
-# define atomic_add_size BUILTIN_ATOMIC_PREFIX ## _atomic_fetch_add
-
-#elif HAVE_BUILTIN_SYNC
-# define ATOMIC
-# define atomic_dec_32(X) __sync_fetch_and_sub((X), 1)
-# define atomic_add_32 __sync_fetch_and_add
-# define atomic_add_32_nv __sync_add_and_fetch
-# define atomic_add_size __sync_fetch_and_add
-
-#else
-# warning "Atomic operators not found so memslap will not work correctly"
-# define ATOMIC
-# define atomic_dec_32(X) (--(*(X)))
-# define atomic_add_32(X,Y) ((*(X))+=(Y))
-# define atomic_add_32_nv atomic_add_32
-# define atomic_add_size atomic_add_32
-
-#endif
-
-#endif /* CLIENTS_MS_ATOMIC_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#include <stdio.h>
-#include <inttypes.h>
-#include <limits.h>
-#include <sys/uio.h>
-#include <event.h>
-#include <fcntl.h>
-#include <netinet/tcp.h>
-#include <netinet/in.h>
-
-#if defined(HAVE_ARPA_INET_H)
-# include <arpa/inet.h>
-#endif
-
-#if defined(HAVE_SYS_TIME_H)
-# include <sys/time.h>
-#endif
-
-#if defined(HAVE_TIME_H)
-# include <time.h>
-#endif
-
-#include "ms_setting.h"
-#include "ms_thread.h"
-#include "ms_atomic.h"
-
-#ifdef linux
-/* /usr/include/netinet/in.h defines macros from ntohs() to _bswap_nn to
- * optimize the conversion functions, but the prototypes generate warnings
- * from gcc. The conversion methods isn't the bottleneck for my app, so
- * just remove the warnings by undef'ing the optimization ..
- */
-# undef ntohs
-# undef ntohl
-# undef htons
-# undef htonl
-#endif
-
-/* for network write */
-#define TRANSMIT_COMPLETE 0
-#define TRANSMIT_INCOMPLETE 1
-#define TRANSMIT_SOFT_ERROR 2
-#define TRANSMIT_HARD_ERROR 3
-
-/* for generating key */
-#define KEY_PREFIX_BASE 0x1010101010101010 /* not include ' ' '\r' '\n' '\0' */
-#define KEY_PREFIX_MASK 0x1010101010101010
-
-/* For parse the value length return by server */
-#define KEY_TOKEN 1
-#define VALUELEN_TOKEN 3
-
-/* global increasing counter, to ensure the key prefix unique */
-static uint64_t key_prefix_seq = KEY_PREFIX_BASE;
-
-/* global increasing counter, generating request id for UDP */
-static ATOMIC uint32_t udp_request_id = 0;
-
-extern pthread_key_t ms_thread_key;
-
-/* generate upd request id */
-static uint32_t ms_get_udp_request_id(void);
-
-/* connect initialize */
-static void ms_task_init(ms_conn_t *c);
-static int ms_conn_udp_init(ms_conn_t *c, const bool is_udp);
-static int ms_conn_sock_init(ms_conn_t *c);
-static int ms_conn_event_init(ms_conn_t *c);
-static int ms_conn_init(ms_conn_t *c, const int init_state, const int read_buffer_size,
- const bool is_udp);
-static void ms_warmup_num_init(ms_conn_t *c);
-static int ms_item_win_init(ms_conn_t *c);
-
-/* connection close */
-void ms_conn_free(ms_conn_t *c);
-static void ms_conn_close(ms_conn_t *c);
-
-/* create network connection */
-static int ms_new_socket(struct addrinfo *ai);
-static void ms_maximize_sndbuf(const int sfd);
-static int ms_network_connect(ms_conn_t *c, char *srv_host_name, const int srv_port,
- const bool is_udp, int *ret_sfd);
-static int ms_reconn(ms_conn_t *c);
-
-/* read and parse */
-static int ms_tokenize_command(char *command, token_t *tokens, const int max_tokens);
-static int ms_ascii_process_line(ms_conn_t *c, char *command);
-static int ms_try_read_line(ms_conn_t *c);
-static int ms_sort_udp_packet(ms_conn_t *c, char *buf, int rbytes);
-static int ms_udp_read(ms_conn_t *c, char *buf, int len);
-static int ms_try_read_network(ms_conn_t *c);
-static void ms_verify_value(ms_conn_t *c, ms_mlget_task_item_t *mlget_item, char *value, int vlen);
-static void ms_ascii_complete_nread(ms_conn_t *c);
-static void ms_bin_complete_nread(ms_conn_t *c);
-static void ms_complete_nread(ms_conn_t *c);
-
-/* send functions */
-static int ms_add_msghdr(ms_conn_t *c);
-static int ms_ensure_iov_space(ms_conn_t *c);
-static int ms_add_iov(ms_conn_t *c, const void *buf, int len);
-static int ms_build_udp_headers(ms_conn_t *c);
-static int ms_transmit(ms_conn_t *c);
-
-/* status adjustment */
-static void ms_conn_shrink(ms_conn_t *c);
-static void ms_conn_set_state(ms_conn_t *c, int state);
-static bool ms_update_event(ms_conn_t *c, const int new_flags);
-static uint32_t ms_get_rep_sock_index(ms_conn_t *c, int cmd);
-static uint32_t ms_get_next_sock_index(ms_conn_t *c);
-static int ms_update_conn_sock_event(ms_conn_t *c);
-static bool ms_need_yield(ms_conn_t *c);
-static void ms_update_start_time(ms_conn_t *c);
-
-/* main loop */
-static void ms_drive_machine(ms_conn_t *c);
-void ms_event_handler(const int fd, const short which, void *arg);
-
-/* ascii protocol */
-static int ms_build_ascii_write_buf_set(ms_conn_t *c, ms_task_item_t *item);
-static int ms_build_ascii_write_buf_get(ms_conn_t *c, ms_task_item_t *item);
-static int ms_build_ascii_write_buf_mlget(ms_conn_t *c);
-
-/* binary protocol */
-static int ms_bin_process_response(ms_conn_t *c);
-static void ms_add_bin_header(ms_conn_t *c, uint8_t opcode, uint8_t hdr_len, uint16_t key_len,
- uint32_t body_len);
-static void ms_add_key_to_iov(ms_conn_t *c, ms_task_item_t *item);
-static int ms_build_bin_write_buf_set(ms_conn_t *c, ms_task_item_t *item);
-static int ms_build_bin_write_buf_get(ms_conn_t *c, ms_task_item_t *item);
-static int ms_build_bin_write_buf_mlget(ms_conn_t *c);
-
-/**
- * each key has two parts, prefix and suffix. The suffix is a
- * string random get form the character table. The prefix is a
- * uint64_t variable. And the prefix must be unique. we use the
- * prefix to identify a key. And the prefix can't include
- * character ' ' '\r' '\n' '\0'.
- *
- * @return uint64_t
- */
-uint64_t ms_get_key_prefix(void) {
- uint64_t key_prefix;
-
- pthread_mutex_lock(&ms_global.seq_mutex);
- key_prefix_seq |= KEY_PREFIX_MASK;
- key_prefix = key_prefix_seq;
- key_prefix_seq++;
- pthread_mutex_unlock(&ms_global.seq_mutex);
-
- return key_prefix;
-} /* ms_get_key_prefix */
-
-/**
- * get an unique udp request id
- *
- * @return an unique UDP request id
- */
-static uint32_t ms_get_udp_request_id(void) {
- return atomic_add_32_nv(&udp_request_id, 1);
-}
-
-/**
- * initialize current task structure
- *
- * @param c, pointer of the concurrency
- */
-static void ms_task_init(ms_conn_t *c) {
- c->curr_task.cmd = CMD_NULL;
- c->curr_task.item = 0;
- c->curr_task.verify = false;
- c->curr_task.finish_verify = true;
- c->curr_task.get_miss = true;
-
- c->curr_task.get_opt = 0;
- c->curr_task.set_opt = 0;
- c->curr_task.cycle_undo_get = 0;
- c->curr_task.cycle_undo_set = 0;
- c->curr_task.verified_get = 0;
- c->curr_task.overwrite_set = 0;
-} /* ms_task_init */
-
-/**
- * initialize udp for the connection structure
- *
- * @param c, pointer of the concurrency
- * @param is_udp, whether it's udp
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_conn_udp_init(ms_conn_t *c, const bool is_udp) {
- c->hdrbuf = 0;
- c->rudpbuf = 0;
- c->udppkt = 0;
-
- c->rudpsize = UDP_DATA_BUFFER_SIZE;
- c->hdrsize = 0;
-
- c->rudpbytes = 0;
- c->packets = 0;
- c->recvpkt = 0;
- c->pktcurr = 0;
- c->ordcurr = 0;
-
- c->udp = is_udp;
-
- if (c->udp || (!c->udp && ms_setting.facebook_test)) {
- c->rudpbuf = (char *) malloc((size_t) c->rudpsize);
- c->udppkt = (ms_udppkt_t *) malloc(MAX_UDP_PACKET * sizeof(ms_udppkt_t));
-
- if ((c->rudpbuf == NULL) || (c->udppkt == NULL)) {
- if (c->rudpbuf)
- free(c->rudpbuf);
- if (c->udppkt)
- free(c->udppkt);
- fprintf(stderr, "malloc()\n");
- return -1;
- }
- memset(c->udppkt, 0, MAX_UDP_PACKET * sizeof(ms_udppkt_t));
- }
-
- return EXIT_SUCCESS;
-} /* ms_conn_udp_init */
-
-/**
- * initialize the connection structure
- *
- * @param c, pointer of the concurrency
- * @param init_state, (conn_read, conn_write, conn_closing)
- * @param read_buffer_size
- * @param is_udp, whether it's udp
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_conn_init(ms_conn_t *c, const int init_state, const int read_buffer_size,
- const bool is_udp) {
- assert(c);
-
- c->rbuf = c->wbuf = 0;
- c->iov = 0;
- c->msglist = 0;
-
- c->rsize = read_buffer_size;
- c->wsize = WRITE_BUFFER_SIZE;
- c->iovsize = IOV_LIST_INITIAL;
- c->msgsize = MSG_LIST_INITIAL;
-
- /* for replication, each connection need connect all the server */
- if (ms_setting.rep_write_srv > 0) {
- c->total_sfds = ms_setting.srv_cnt * ms_setting.sock_per_conn;
- } else {
- c->total_sfds = ms_setting.sock_per_conn;
- }
- c->alive_sfds = 0;
-
- c->rbuf = (char *) malloc((size_t) c->rsize);
- c->wbuf = (char *) malloc((size_t) c->wsize);
- c->iov = (struct iovec *) malloc(sizeof(struct iovec) * (size_t) c->iovsize);
- c->msglist = (struct msghdr *) malloc(sizeof(struct msghdr) * (size_t) c->msgsize);
- if (ms_setting.mult_key_num > 1) {
- c->mlget_task.mlget_item = (ms_mlget_task_item_t *) malloc(sizeof(ms_mlget_task_item_t)
- * (size_t) ms_setting.mult_key_num);
- }
- c->tcpsfd = (int *) malloc((size_t) c->total_sfds * sizeof(int));
-
- if ((c->rbuf == NULL) || (c->wbuf == NULL) || (c->iov == NULL) || (c->msglist == NULL)
- || (c->tcpsfd == NULL)
- || ((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_item == NULL)))
- {
- if (c->rbuf)
- free(c->rbuf);
- if (c->wbuf)
- free(c->wbuf);
- if (c->iov)
- free(c->iov);
- if (c->msglist)
- free(c->msglist);
- if (c->mlget_task.mlget_item)
- free(c->mlget_task.mlget_item);
- if (c->tcpsfd)
- free(c->tcpsfd);
- fprintf(stderr, "malloc()\n");
- return -1;
- }
-
- c->state = init_state;
- c->rvbytes = 0;
- c->rbytes = 0;
- c->rcurr = c->rbuf;
- c->wcurr = c->wbuf;
- c->iovused = 0;
- c->msgcurr = 0;
- c->msgused = 0;
- c->cur_idx = c->total_sfds; /* default index is a invalid value */
-
- c->ctnwrite = false;
- c->readval = false;
- c->change_sfd = false;
-
- c->precmd.cmd = c->currcmd.cmd = CMD_NULL;
- c->precmd.isfinish = true; /* default the previous command finished */
- c->currcmd.isfinish = false;
- c->precmd.retstat = c->currcmd.retstat = MCD_FAILURE;
- c->precmd.key_prefix = c->currcmd.key_prefix = 0;
-
- c->mlget_task.mlget_num = 0;
- c->mlget_task.value_index = -1; /* default invalid value */
-
- if (ms_setting.binary_prot_) {
- c->protocol = binary_prot;
- } else {
- c->protocol = ascii_prot;
- }
-
- /* initialize udp */
- if (ms_conn_udp_init(c, is_udp)) {
- return -1;
- }
-
- /* initialize task */
- ms_task_init(c);
-
- if (!(ms_setting.facebook_test && is_udp)) {
- atomic_add_32(&ms_stats.active_conns, 1);
- }
-
- return EXIT_SUCCESS;
-} /* ms_conn_init */
-
-/**
- * when doing 100% get operation, it could preset some objects
- * to warmup the server. this function is used to initialize the
- * number of the objects to preset.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_warmup_num_init(ms_conn_t *c) {
- /* no set operation, preset all the items in the window */
- if (ms_setting.cmd_distr[CMD_SET].cmd_prop < PROP_ERROR) {
- c->warmup_num = c->win_size;
- c->remain_warmup_num = c->warmup_num;
- } else {
- c->warmup_num = 0;
- c->remain_warmup_num = c->warmup_num;
- }
-} /* ms_warmup_num_init */
-
-/**
- * each connection has an item window, this function initialize
- * the window. The window is used to generate task.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_item_win_init(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- int exp_cnt = 0;
-
- c->win_size = (int) ms_setting.win_size;
- c->set_cursor = 0;
- c->exec_num = ms_thread->thread_ctx->exec_num_perconn;
- c->remain_exec_num = c->exec_num;
-
- c->item_win = (ms_task_item_t *) malloc(sizeof(ms_task_item_t) * (size_t) c->win_size);
- if (c->item_win == NULL) {
- fprintf(stderr, "Can't allocate task item array for conn.\n");
- return -1;
- }
- memset(c->item_win, 0, sizeof(ms_task_item_t) * (size_t) c->win_size);
-
- for (int i = 0; i < c->win_size; i++) {
- c->item_win[i].key_size = (int) ms_setting.distr[i].key_size;
- c->item_win[i].key_prefix = ms_get_key_prefix();
- c->item_win[i].key_suffix_offset = ms_setting.distr[i].key_offset;
- c->item_win[i].value_size = (int) ms_setting.distr[i].value_size;
- c->item_win[i].value_offset = INVALID_OFFSET; /* default in invalid offset */
- c->item_win[i].client_time = 0;
-
- /* set expire time base on the proportion */
- if (exp_cnt < ms_setting.exp_ver_per * i) {
- c->item_win[i].exp_time = FIXED_EXPIRE_TIME;
- exp_cnt++;
- } else {
- c->item_win[i].exp_time = 0;
- }
- }
-
- ms_warmup_num_init(c);
-
- return EXIT_SUCCESS;
-} /* ms_item_win_init */
-
-/**
- * each connection structure can include one or more sock
- * handlers. this function create these socks and connect the
- * server(s).
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_conn_sock_init(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- uint32_t i;
- int ret_sfd;
- uint32_t srv_idx = 0;
-
- assert(c);
- assert(c->tcpsfd);
-
- for (i = 0; i < c->total_sfds; i++) {
- ret_sfd = 0;
- if (ms_setting.rep_write_srv > 0) {
- /* for replication, each connection need connect all the server */
- srv_idx = i % ms_setting.srv_cnt;
- } else {
- /* all the connections in a thread connects the same server */
- srv_idx = ms_thread->thread_ctx->srv_idx;
- }
-
- if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
- ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &ret_sfd)
-)
- {
- break;
- }
-
- if (i == 0) {
- c->sfd = ret_sfd;
- }
-
- if (!ms_setting.udp) {
- c->tcpsfd[i] = ret_sfd;
- }
-
- c->alive_sfds++;
- }
-
- /* initialize udp sock handler if necessary */
- if (ms_setting.facebook_test) {
- ret_sfd = 0;
- if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
- ms_setting.servers[srv_idx].srv_port, true, &ret_sfd)
-)
- {
- c->udpsfd = 0;
- } else {
- c->udpsfd = ret_sfd;
- }
- }
-
- if ((i != c->total_sfds) || (ms_setting.facebook_test && (c->udpsfd == 0))) {
- if (ms_setting.udp) {
- close(c->sfd);
- } else {
- for (uint32_t j = 0; j < i; j++) {
- close(c->tcpsfd[j]);
- }
- }
-
- if (c->udpsfd) {
- close(c->udpsfd);
- }
-
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_conn_sock_init */
-
-/**
- * each connection is managed by libevent, this function
- * initialize the event of the connection structure.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_conn_event_init(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- short event_flags = EV_WRITE | EV_PERSIST;
-
- event_set(&c->event, c->sfd, event_flags, ms_event_handler, (void *) c);
- event_base_set(ms_thread->base, &c->event);
- c->ev_flags = event_flags;
-
- if (event_add(&c->event, NULL) == -1) {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_conn_event_init */
-
-/**
- * setup a connection, each connection structure of each
- * thread must call this function to initialize.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_setup_conn(ms_conn_t *c) {
- if (ms_item_win_init(c)) {
- return -1;
- }
-
- if (ms_conn_init(c, conn_write, DATA_BUFFER_SIZE, ms_setting.udp)) {
- return -1;
- }
-
- if (ms_conn_sock_init(c)) {
- return -1;
- }
-
- if (ms_conn_event_init(c)) {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_setup_conn */
-
-/**
- * Frees a connection.
- *
- * @param c, pointer of the concurrency
- */
-void ms_conn_free(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- if (c) {
- if (c->hdrbuf)
- free(c->hdrbuf);
- if (c->msglist)
- free(c->msglist);
- if (c->rbuf)
- free(c->rbuf);
- if (c->wbuf)
- free(c->wbuf);
- if (c->iov)
- free(c->iov);
- if (c->mlget_task.mlget_item)
- free(c->mlget_task.mlget_item);
- if (c->rudpbuf)
- free(c->rudpbuf);
- if (c->udppkt)
- free(c->udppkt);
- if (c->item_win)
- free(c->item_win);
- if (c->tcpsfd)
- free(c->tcpsfd);
-
- if (--ms_thread->nactive_conn == 0) {
- free(ms_thread->conn);
- }
- }
-} /* ms_conn_free */
-
-/**
- * close a connection
- *
- * @param c, pointer of the concurrency
- */
-static void ms_conn_close(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- assert(c);
-
- /* delete the event, the socket and the connection */
- event_del(&c->event);
-
- for (uint32_t i = 0; i < c->total_sfds; i++) {
- if (c->tcpsfd[i] > 0) {
- close(c->tcpsfd[i]);
- }
- }
- c->sfd = 0;
-
- if (ms_setting.facebook_test) {
- close(c->udpsfd);
- }
-
- atomic_dec_32(&ms_stats.active_conns);
-
- ms_conn_free(c);
-
- if (ms_setting.run_time == 0) {
- pthread_mutex_lock(&ms_global.run_lock.lock);
- ms_global.run_lock.count++;
- pthread_cond_signal(&ms_global.run_lock.cond);
- pthread_mutex_unlock(&ms_global.run_lock.lock);
- }
-
- if (ms_thread->nactive_conn == 0) {
- event_base_loopbreak(ms_thread->base);
- }
-} /* ms_conn_close */
-
-/**
- * create a new sock
- *
- * @param ai, server address information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_new_socket(struct addrinfo *ai) {
- int sfd;
-
- if ((sfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol)) == -1) {
- fprintf(stderr, "socket() error: %s.\n", strerror(errno));
- return -1;
- }
-
- return sfd;
-} /* ms_new_socket */
-
-/**
- * Sets a socket's send buffer size to the maximum allowed by the system.
- *
- * @param sfd, file descriptor of socket
- */
-static void ms_maximize_sndbuf(const int sfd) {
- socklen_t intsize = sizeof(int);
- unsigned int last_good = 0;
- unsigned int min, max, avg;
- unsigned int old_size;
-
- /* Start with the default size. */
- if (getsockopt(sfd, SOL_SOCKET, SO_SNDBUF, &old_size, &intsize)) {
- fprintf(stderr, "getsockopt(SO_SNDBUF)\n");
- return;
- }
-
- /* Binary-search for the real maximum. */
- min = old_size;
- max = MAX_SENDBUF_SIZE;
-
- while (min <= max) {
- avg = ((unsigned int) (min + max)) / 2;
- if (setsockopt(sfd, SOL_SOCKET, SO_SNDBUF, (void *) &avg, intsize) == 0) {
- last_good = avg;
- min = avg + 1;
- } else {
- max = avg - 1;
- }
- }
- (void) last_good;
-} /* ms_maximize_sndbuf */
-
-/**
- * socket connects the server
- *
- * @param c, pointer of the concurrency
- * @param srv_host_name, the host name of the server
- * @param srv_port, port of server
- * @param is_udp, whether it's udp
- * @param ret_sfd, the connected socket file descriptor
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_network_connect(ms_conn_t *c, char *srv_host_name, const int srv_port,
- const bool is_udp, int *ret_sfd) {
- int sfd;
- struct linger ling = {0, 0};
- struct addrinfo *ai;
- struct addrinfo *next;
- struct addrinfo hints;
- char port_buf[NI_MAXSERV];
- int error;
- int success = 0;
-
- int flags = 1;
-
- /*
- * the memset call clears nonstandard fields in some impementations
- * that otherwise mess things up.
- */
- memset(&hints, 0, sizeof(hints));
-#ifdef AI_ADDRCONFIG
- hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
-#else
- hints.ai_flags = AI_PASSIVE;
-#endif /* AI_ADDRCONFIG */
- if (is_udp) {
- hints.ai_protocol = IPPROTO_UDP;
- hints.ai_socktype = SOCK_DGRAM;
- hints.ai_family = AF_INET; /* This left here because of issues with OSX 10.5 */
- } else {
- hints.ai_family = AF_UNSPEC;
- hints.ai_protocol = IPPROTO_TCP;
- hints.ai_socktype = SOCK_STREAM;
- }
-
- snprintf(port_buf, NI_MAXSERV, "%d", srv_port);
- error = getaddrinfo(srv_host_name, port_buf, &hints, &ai);
- if (error) {
- if (error != EAI_SYSTEM)
- fprintf(stderr, "getaddrinfo(): %s.\n", gai_strerror(error));
- else
- perror("getaddrinfo()");
-
- return -1;
- }
-
- for (next = ai; next; next = next->ai_next) {
- if ((sfd = ms_new_socket(next)) == -1) {
- freeaddrinfo(ai);
- return -1;
- }
-
- setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, (void *) &flags, sizeof(flags));
- if (is_udp) {
- ms_maximize_sndbuf(sfd);
- } else {
- setsockopt(sfd, SOL_SOCKET, SO_KEEPALIVE, (void *) &flags, sizeof(flags));
- setsockopt(sfd, SOL_SOCKET, SO_LINGER, (void *) &ling, sizeof(ling));
- setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, (void *) &flags, sizeof(flags));
- }
-
- if (is_udp) {
- c->srv_recv_addr_size = sizeof(struct sockaddr);
- memcpy(&c->srv_recv_addr, next->ai_addr, c->srv_recv_addr_size);
- } else {
- if (connect(sfd, next->ai_addr, next->ai_addrlen) == -1) {
- close(sfd);
- freeaddrinfo(ai);
- return -1;
- }
- }
-
- if (((flags = fcntl(sfd, F_GETFL, 0)) < 0) || (fcntl(sfd, F_SETFL, flags | O_NONBLOCK) < 0)) {
- fprintf(stderr, "setting O_NONBLOCK\n");
- close(sfd);
- freeaddrinfo(ai);
- return -1;
- }
-
- if (ret_sfd) {
- *ret_sfd = sfd;
- }
-
- success++;
- }
-
- freeaddrinfo(ai);
-
- /* Return zero if we detected no errors in starting up connections */
- return success == 0;
-} /* ms_network_connect */
-
-/**
- * reconnect a disconnected sock
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_reconn(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- uint32_t srv_idx = 0;
- uint32_t srv_conn_cnt = 0;
-
- if (ms_setting.rep_write_srv > 0) {
- srv_idx = c->cur_idx % ms_setting.srv_cnt;
- srv_conn_cnt = ms_setting.sock_per_conn * ms_setting.nconns;
- } else {
- srv_idx = ms_thread->thread_ctx->srv_idx;
- srv_conn_cnt = ms_setting.nconns / ms_setting.srv_cnt;
- }
-
- /* close the old socket handler */
- close(c->sfd);
- c->tcpsfd[c->cur_idx] = 0;
-
- if (atomic_add_32_nv(&ms_setting.servers[srv_idx].disconn_cnt, 1) % srv_conn_cnt == 0) {
- gettimeofday(&ms_setting.servers[srv_idx].disconn_time, NULL);
- fprintf(stderr, "Server %s:%d disconnect\n", ms_setting.servers[srv_idx].srv_host_name,
- ms_setting.servers[srv_idx].srv_port);
- }
-
- if (ms_setting.rep_write_srv > 0) {
- uint32_t i = 0;
-
- for (i = 0; i < c->total_sfds; i++) {
- if (c->tcpsfd[i]) {
- break;
- }
- }
-
- /* all socks disconnect */
- if (i == c->total_sfds) {
- return -1;
- }
- } else {
- do {
- /* reconnect success, break the loop */
- if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
- ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &c->sfd)
- == 0)
- {
- c->tcpsfd[c->cur_idx] = c->sfd;
- if (atomic_add_32_nv(&ms_setting.servers[srv_idx].reconn_cnt, 1) % (uint32_t) srv_conn_cnt
- == 0) {
- gettimeofday(&ms_setting.servers[srv_idx].reconn_time, NULL);
- int reconn_time = (int) (ms_setting.servers[srv_idx].reconn_time.tv_sec
- - ms_setting.servers[srv_idx].disconn_time.tv_sec);
- fprintf(stderr, "Server %s:%d reconnect after %ds\n",
- ms_setting.servers[srv_idx].srv_host_name, ms_setting.servers[srv_idx].srv_port,
- reconn_time);
- }
- break;
- }
-
- if (ms_setting.rep_write_srv == 0 && c->total_sfds > 0) {
- /* wait a second and reconnect */
- sleep(1);
- }
- } while (ms_setting.rep_write_srv == 0 && c->total_sfds > 0);
- }
-
- if ((c->total_sfds > 1) && (c->tcpsfd[c->cur_idx] == 0)) {
- c->sfd = 0;
- c->alive_sfds--;
- }
-
- return EXIT_SUCCESS;
-} /* ms_reconn */
-
-/**
- * reconnect several disconnected socks in the connection
- * structure, the ever-1-second timer of the thread will check
- * whether some socks in the connections disconnect. if
- * disconnect, reconnect the sock.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_reconn_socks(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- uint32_t srv_idx = 0;
- int ret_sfd = 0;
- uint32_t srv_conn_cnt = 0;
- struct timeval cur_time;
-
- assert(c);
-
- if ((c->total_sfds == 1) || (c->total_sfds == c->alive_sfds)) {
- return EXIT_SUCCESS;
- }
-
- for (uint32_t i = 0; i < c->total_sfds; i++) {
- if (c->tcpsfd[i] == 0) {
- gettimeofday(&cur_time, NULL);
-
- /**
- * For failover test of replication, reconnect the socks after
- * it disconnects more than 5 seconds, Otherwise memslap will
- * block at connect() function and the work threads can't work
- * in this interval.
- */
- if (cur_time.tv_sec - ms_setting.servers[srv_idx].disconn_time.tv_sec < 5) {
- break;
- }
-
- if (ms_setting.rep_write_srv > 0) {
- srv_idx = i % ms_setting.srv_cnt;
- srv_conn_cnt = ms_setting.sock_per_conn * ms_setting.nconns;
- } else {
- srv_idx = ms_thread->thread_ctx->srv_idx;
- srv_conn_cnt = ms_setting.nconns / ms_setting.srv_cnt;
- }
-
- if (ms_network_connect(c, ms_setting.servers[srv_idx].srv_host_name,
- ms_setting.servers[srv_idx].srv_port, ms_setting.udp, &ret_sfd)
- == 0)
- {
- c->tcpsfd[i] = ret_sfd;
- c->alive_sfds++;
-
- if (atomic_add_32_nv(&ms_setting.servers[srv_idx].reconn_cnt, 1) % (uint32_t) srv_conn_cnt
- == 0) {
- gettimeofday(&ms_setting.servers[srv_idx].reconn_time, NULL);
- int reconn_time = (int) (ms_setting.servers[srv_idx].reconn_time.tv_sec
- - ms_setting.servers[srv_idx].disconn_time.tv_sec);
- fprintf(stderr, "Server %s:%d reconnect after %ds\n",
- ms_setting.servers[srv_idx].srv_host_name, ms_setting.servers[srv_idx].srv_port,
- reconn_time);
- }
- }
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_reconn_socks */
-
-/**
- * Tokenize the command string by replacing whitespace with '\0' and update
- * the token array tokens with pointer to start of each token and length.
- * Returns total number of tokens. The last valid token is the terminal
- * token (value points to the first unprocessed character of the string and
- * length zero).
- *
- * Usage example:
- *
- * while(ms_tokenize_command(command, ncommand, tokens, max_tokens) > 0) {
- * for(int ix = 0; tokens[ix].length; ix++) {
- * ...
- * }
- * ncommand = tokens[ix].value - command;
- * command = tokens[ix].value;
- * }
- *
- * @param command, the command string to token
- * @param tokens, array to store tokens
- * @param max_tokens, maximum tokens number
- *
- * @return int, the number of tokens
- */
-static int ms_tokenize_command(char *command, token_t *tokens, const int max_tokens) {
- char *s, *e;
- int ntokens = 0;
-
- assert(command && tokens && max_tokens > 1);
-
- for (s = e = command; ntokens < max_tokens - 1; ++e) {
- if (*e == ' ') {
- if (s != e) {
- tokens[ntokens].value = s;
- tokens[ntokens].length = (size_t)(e - s);
- ntokens++;
- *e = '\0';
- }
- s = e + 1;
- } else if (*e == '\0') {
- if (s != e) {
- tokens[ntokens].value = s;
- tokens[ntokens].length = (size_t)(e - s);
- ntokens++;
- }
-
- break; /* string end */
- }
- }
-
- return ntokens;
-} /* ms_tokenize_command */
-
-/**
- * parse the response of server.
- *
- * @param c, pointer of the concurrency
- * @param command, the string responded by server
- *
- * @return int, if the command completed return EXIT_SUCCESS, else return
- * -1
- */
-static int ms_ascii_process_line(ms_conn_t *c, char *command) {
- int ret = 0;
- int64_t value_len;
- char *buffer = command;
-
- assert(c);
-
- /**
- * for command get, we store the returned value into local buffer
- * then continue in ms_complete_nread().
- */
-
- switch (buffer[0]) {
- case 'V': /* VALUE || VERSION */
- if (buffer[1] == 'A') /* VALUE */ {
- token_t tokens[MAX_TOKENS];
- ms_tokenize_command(command, tokens, MAX_TOKENS);
- errno = 0;
- value_len = strtol(tokens[VALUELEN_TOKEN].value, NULL, 10);
- if (errno) {
- printf("<%d ERROR %s\n", c->sfd, strerror(errno));
- }
- memcpy(&c->currcmd.key_prefix, tokens[KEY_TOKEN].value, sizeof(c->currcmd.key_prefix));
-
- /*
- * We read the \r\n into the string since not doing so is more
- * cycles then the waster of memory to do so.
- *
- * We are null terminating through, which will most likely make
- * some people lazy about using the return length.
- */
- c->rvbytes = (int) (value_len + 2);
- c->readval = true;
- ret = -1;
- }
-
- break;
-
- case 'O': /* OK */
- c->currcmd.retstat = MCD_SUCCESS;
- break;
-
- case 'S': /* STORED STATS SERVER_ERROR */
- if (buffer[2] == 'A') /* STORED STATS */ { /* STATS*/
- c->currcmd.retstat = MCD_STAT;
- } else if (buffer[1] == 'E') {
- /* SERVER_ERROR */
- printf("<%d %s\n", c->sfd, buffer);
-
- c->currcmd.retstat = MCD_SERVER_ERROR;
- } else if (buffer[1] == 'T') {
- /* STORED */
- c->currcmd.retstat = MCD_STORED;
- } else {
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- }
- break;
-
- case 'D': /* DELETED DATA */
- if (buffer[1] == 'E') {
- c->currcmd.retstat = MCD_DELETED;
- } else {
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- }
-
- break;
-
- case 'N': /* NOT_FOUND NOT_STORED*/
- if (buffer[4] == 'F') {
- c->currcmd.retstat = MCD_NOTFOUND;
- } else if (buffer[4] == 'S') {
- printf("<%d %s\n", c->sfd, buffer);
- c->currcmd.retstat = MCD_NOTSTORED;
- } else {
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- }
- break;
-
- case 'E': /* PROTOCOL ERROR or END */
- if (buffer[1] == 'N') {
- /* END */
- c->currcmd.retstat = MCD_END;
- } else if (buffer[1] == 'R') {
- printf("<%d ERROR\n", c->sfd);
- c->currcmd.retstat = MCD_PROTOCOL_ERROR;
- } else if (buffer[1] == 'X') {
- c->currcmd.retstat = MCD_DATA_EXISTS;
- printf("<%d %s\n", c->sfd, buffer);
- } else {
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- }
- break;
-
- case 'C': /* CLIENT ERROR */
- printf("<%d %s\n", c->sfd, buffer);
- c->currcmd.retstat = MCD_CLIENT_ERROR;
- break;
-
- default:
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- break;
- } /* switch */
-
- return ret;
-} /* ms_ascii_process_line */
-
-/**
- * after one operation completes, reset the concurrency
- *
- * @param c, pointer of the concurrency
- * @param timeout, whether it's timeout
- */
-void ms_reset_conn(ms_conn_t *c, bool timeout) {
- assert(c);
-
- if (c->udp) {
- if ((c->packets > 0) && (c->packets < MAX_UDP_PACKET)) {
- memset(c->udppkt, 0, sizeof(ms_udppkt_t) * (size_t) c->packets);
- }
-
- c->packets = 0;
- c->recvpkt = 0;
- c->pktcurr = 0;
- c->ordcurr = 0;
- c->rudpbytes = 0;
- }
- c->currcmd.isfinish = true;
- c->ctnwrite = false;
- c->rbytes = 0;
- c->rcurr = c->rbuf;
- c->msgcurr = 0;
- c->msgused = 0;
- c->iovused = 0;
- ms_conn_set_state(c, conn_write);
- memcpy(&c->precmd, &c->currcmd, sizeof(ms_cmdstat_t)); /* replicate command state */
-
- if (timeout) {
- ms_drive_machine(c);
- }
-} /* ms_reset_conn */
-
-/**
- * if we have a complete line in the buffer, process it.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_try_read_line(ms_conn_t *c) {
- if (c->protocol == binary_prot) {
- /* Do we have the complete packet header? */
- if ((uint64_t) c->rbytes < sizeof(c->binary_header)) {
- /* need more data! */
- return EXIT_SUCCESS;
- } else {
-#ifdef NEED_ALIGN
- if (((long) (c->rcurr)) % 8) {
- /* must realign input buffer */
- memmove(c->rbuf, c->rcurr, c->rbytes);
- c->rcurr = c->rbuf;
- if (settings.verbose) {
- fprintf(stderr, "%d: Realign input buffer.\n", c->sfd);
- }
- }
-#endif
- protocol_binary_response_header *rsp;
- rsp = (protocol_binary_response_header *) c->rcurr;
-
- c->binary_header = *rsp;
- c->binary_header.response.extlen = rsp->response.extlen;
- c->binary_header.response.keylen = ntohs(rsp->response.keylen);
- c->binary_header.response.bodylen = ntohl(rsp->response.bodylen);
- c->binary_header.response.status = ntohs(rsp->response.status);
-
- if (c->binary_header.response.magic != PROTOCOL_BINARY_RES) {
- fprintf(stderr, "Invalid magic: %x\n", c->binary_header.response.magic);
- ms_conn_set_state(c, conn_closing);
- return EXIT_SUCCESS;
- }
-
- /* process this complete response */
- if (ms_bin_process_response(c) == 0) {
- /* current operation completed */
- ms_reset_conn(c, false);
- return -1;
- } else {
- c->rbytes -= (int32_t) sizeof(c->binary_header);
- c->rcurr += sizeof(c->binary_header);
- }
- }
- } else {
- char *el, *cont;
-
- assert(c);
- assert(c->rcurr <= (c->rbuf + c->rsize));
-
- if (c->rbytes == 0)
- return EXIT_SUCCESS;
-
- el = memchr(c->rcurr, '\n', (size_t) c->rbytes);
- if (!el)
- return EXIT_SUCCESS;
-
- cont = el + 1;
- if (((el - c->rcurr) > 1) && (*(el - 1) == '\r')) {
- el--;
- }
- *el = '\0';
-
- assert(cont <= (c->rcurr + c->rbytes));
-
- /* process this complete line */
- if (ms_ascii_process_line(c, c->rcurr) == 0) {
- /* current operation completed */
- ms_reset_conn(c, false);
- return -1;
- } else {
- /* current operation didn't complete */
- c->rbytes -= (int32_t)(cont - c->rcurr);
- c->rcurr = cont;
- }
-
- assert(c->rcurr <= (c->rbuf + c->rsize));
- }
-
- return -1;
-} /* ms_try_read_line */
-
-/**
- * because the packet of UDP can't ensure the order, the
- * function is used to sort the received udp packet.
- *
- * @param c, pointer of the concurrency
- * @param buf, the buffer to store the ordered packages data
- * @param rbytes, the maximum capacity of the buffer
- *
- * @return int, if success, return the copy bytes, else return
- * -1
- */
-static int ms_sort_udp_packet(ms_conn_t *c, char *buf, int rbytes) {
- int len = 0;
- int wbytes = 0;
- uint16_t req_id = 0;
- uint16_t seq_num = 0;
- uint16_t packets = 0;
- unsigned char *header = NULL;
-
- /* no enough data */
- assert(c);
- assert(buf);
- assert(c->rudpbytes >= UDP_HEADER_SIZE);
-
- /* calculate received packets count */
- if (c->rudpbytes % UDP_MAX_PAYLOAD_SIZE >= UDP_HEADER_SIZE) {
- /* the last packet has some data */
- c->recvpkt = c->rudpbytes / UDP_MAX_PAYLOAD_SIZE + 1;
- } else {
- c->recvpkt = c->rudpbytes / UDP_MAX_PAYLOAD_SIZE;
- }
-
- /* get the total packets count if necessary */
- if (c->packets == 0) {
- c->packets = HEADER_TO_PACKETS((unsigned char *) c->rudpbuf);
- }
-
- /* build the ordered packet array */
- for (int i = c->pktcurr; i < c->recvpkt; i++) {
- header = (unsigned char *) c->rudpbuf + i * UDP_MAX_PAYLOAD_SIZE;
- req_id = (uint16_t) HEADER_TO_REQID(header);
- assert(req_id == c->request_id % (1 << 16));
-
- packets = (uint16_t) HEADER_TO_PACKETS(header);
- assert(c->packets == HEADER_TO_PACKETS(header));
-
- seq_num = (uint16_t) HEADER_TO_SEQNUM(header);
- c->udppkt[seq_num].header = header;
- c->udppkt[seq_num].data = (char *) header + UDP_HEADER_SIZE;
-
- if (i == c->recvpkt - 1) {
- /* last received packet */
- if (c->rudpbytes % UDP_MAX_PAYLOAD_SIZE == 0) {
- c->udppkt[seq_num].rbytes = UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
- c->pktcurr++;
- } else {
- c->udppkt[seq_num].rbytes = c->rudpbytes % UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
- }
- } else {
- c->udppkt[seq_num].rbytes = UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE;
- c->pktcurr++;
- }
- }
-
- for (int i = c->ordcurr; i < c->recvpkt; i++) {
- /* there is some data to copy */
- if ((c->udppkt[i].data) && (c->udppkt[i].copybytes < c->udppkt[i].rbytes)) {
- header = c->udppkt[i].header;
- len = c->udppkt[i].rbytes - c->udppkt[i].copybytes;
- if (len > rbytes - wbytes) {
- len = rbytes - wbytes;
- }
-
- assert(len <= rbytes - wbytes);
- assert(i == HEADER_TO_SEQNUM(header));
-
- memcpy(buf + wbytes, c->udppkt[i].data + c->udppkt[i].copybytes, (size_t) len);
- wbytes += len;
- c->udppkt[i].copybytes += len;
-
- if ((c->udppkt[i].copybytes == c->udppkt[i].rbytes)
- && (c->udppkt[i].rbytes == UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE))
- {
- /* finish copying all the data of this packet, next */
- c->ordcurr++;
- }
-
- /* last received packet, and finish copying all the data */
- if ((c->recvpkt == c->packets) && (i == c->recvpkt - 1)
- && (c->udppkt[i].copybytes == c->udppkt[i].rbytes))
- {
- break;
- }
-
- /* no space to copy data */
- if (wbytes >= rbytes) {
- break;
- }
-
- /* it doesn't finish reading all the data of the packet from network */
- if ((i != c->recvpkt - 1) && (c->udppkt[i].rbytes < UDP_MAX_PAYLOAD_SIZE - UDP_HEADER_SIZE)) {
- break;
- }
- } else {
- /* no data to copy */
- break;
- }
- }
- (void) packets;
-
- return wbytes == 0 ? -1 : wbytes;
-} /* ms_sort_udp_packet */
-
-/**
- * encapsulate upd read like tcp read
- *
- * @param c, pointer of the concurrency
- * @param buf, read buffer
- * @param len, length to read
- *
- * @return int, if success, return the read bytes, else return
- * -1
- */
-static int ms_udp_read(ms_conn_t *c, char *buf, int len) {
- int res = 0;
- int avail = 0;
- int rbytes = 0;
- int copybytes = 0;
-
- assert(c->udp);
-
- while (1) {
- if (c->rudpbytes + UDP_MAX_PAYLOAD_SIZE > c->rudpsize) {
- char *new_rbuf = realloc(c->rudpbuf, (size_t) c->rudpsize * 2);
- if (!new_rbuf) {
- fprintf(stderr, "Couldn't realloc input buffer.\n");
- c->rudpbytes = 0; /* ignore what we read */
- return -1;
- }
- c->rudpbuf = new_rbuf;
- c->rudpsize *= 2;
- }
-
- avail = c->rudpsize - c->rudpbytes;
- /* UDP each time read a packet, 1400 bytes */
- res = (int) read(c->sfd, c->rudpbuf + c->rudpbytes, (size_t) avail);
-
- if (res > 0) {
- atomic_add_size(&ms_stats.bytes_read, res);
- c->rudpbytes += res;
- rbytes += res;
- if (res == avail) {
- continue;
- } else {
- break;
- }
- }
-
- if (res == 0) {
- /* "connection" closed */
- return res;
- }
-
- if (res == -1) {
- /* no data to read */
- return res;
- }
- }
-
- /* copy data to read buffer */
- if (rbytes > 0) {
- copybytes = ms_sort_udp_packet(c, buf, len);
- }
-
- if (copybytes == -1) {
- atomic_add_size(&ms_stats.pkt_disorder, 1);
- }
-
- return copybytes;
-} /* ms_udp_read */
-
-/*
- * read from network as much as we can, handle buffer overflow and connection
- * close.
- * before reading, move the remaining incomplete fragment of a command
- * (if any) to the beginning of the buffer.
- * return EXIT_SUCCESS if there's nothing to read on the first read.
- */
-
-/**
- * read from network as much as we can, handle buffer overflow and connection
- * close. before reading, move the remaining incomplete fragment of a command
- * (if any) to the beginning of the buffer.
- *
- * @param c, pointer of the concurrency
- *
- * @return int,
- * return EXIT_SUCCESS if there's nothing to read on the first read.
- * return EXIT_FAILURE if get data
- * return -1 if error happens
- */
-static int ms_try_read_network(ms_conn_t *c) {
- int gotdata = 0;
- int res;
- int64_t avail;
-
- assert(c);
-
- if ((c->rcurr != c->rbuf)
- && (!c->readval || (c->rvbytes > c->rsize - (c->rcurr - c->rbuf))
- || (c->readval && (c->rcurr - c->rbuf > c->rbytes))))
- {
- if (c->rbytes) /* otherwise there's nothing to copy */
- memmove(c->rbuf, c->rcurr, (size_t) c->rbytes);
- c->rcurr = c->rbuf;
- }
-
- while (1) {
- if (c->rbytes >= c->rsize) {
- char *new_rbuf = realloc(c->rbuf, (size_t) c->rsize * 2);
- if (!new_rbuf) {
- fprintf(stderr, "Couldn't realloc input buffer.\n");
- c->rbytes = 0; /* ignore what we read */
- return -1;
- }
- c->rcurr = c->rbuf = new_rbuf;
- c->rsize *= 2;
- }
-
- avail = c->rsize - c->rbytes - (c->rcurr - c->rbuf);
- if (avail == 0) {
- break;
- }
-
- if (c->udp) {
- res = (int32_t) ms_udp_read(c, c->rcurr + c->rbytes, (int32_t) avail);
- } else {
- res = (int) read(c->sfd, c->rcurr + c->rbytes, (size_t) avail);
- }
-
- if (res > 0) {
- if (!c->udp) {
- atomic_add_size(&ms_stats.bytes_read, res);
- }
- gotdata = 1;
- c->rbytes += res;
- if (res == avail) {
- continue;
- } else {
- break;
- }
- }
- if (res == 0) {
- /* connection closed */
- ms_conn_set_state(c, conn_closing);
- return -1;
- }
- if (res == -1) {
- if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
- break;
- /* Should close on unhandled errors. */
- ms_conn_set_state(c, conn_closing);
- return -1;
- }
- }
-
- return gotdata;
-} /* ms_try_read_network */
-
-/**
- * after get the object from server, verify the value if
- * necessary.
- *
- * @param c, pointer of the concurrency
- * @param mlget_item, pointer of mulit-get task item structure
- * @param value, received value string
- * @param vlen, received value string length
- */
-static void ms_verify_value(ms_conn_t *c, ms_mlget_task_item_t *mlget_item, char *value, int vlen) {
- if (c->curr_task.verify) {
- assert(c->curr_task.item->value_offset != INVALID_OFFSET);
- char *orignval = &ms_setting.char_block[c->curr_task.item->value_offset];
- char *orignkey = &ms_setting.char_block[c->curr_task.item->key_suffix_offset];
-
- /* verify expire time if necessary */
- if (c->curr_task.item->exp_time > 0) {
- struct timeval curr_time;
- gettimeofday(&curr_time, NULL);
-
- /* object expired but get it now */
- if (curr_time.tv_sec - c->curr_task.item->client_time
- > c->curr_task.item->exp_time + EXPIRE_TIME_ERROR)
- {
- atomic_add_size(&ms_stats.exp_get, 1);
-
- if (ms_setting.verbose) {
- char set_time[64];
- char cur_time[64];
- strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&c->curr_task.item->client_time));
- strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
- fprintf(stderr,
- "\n<%d expire time verification failed, "
- "object expired but get it now\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\tset time: %s current time: %s "
- "diff time: %d expire time: %d\n"
- "\texpected data: \n"
- "\treceived data len: %d\n"
- "\treceived data: %.*s\n",
- c->sfd, c->curr_task.item->key_size, c->curr_task.item->key_prefix,
- c->curr_task.item->key_size - (int) KEY_PREFIX_SIZE, orignkey, set_time, cur_time,
- (int) (curr_time.tv_sec - c->curr_task.item->client_time),
- c->curr_task.item->exp_time, vlen, vlen, value);
- fflush(stderr);
- }
- }
- } else {
- if ((c->curr_task.item->value_size != vlen) || (memcmp(orignval, value, (size_t) vlen)))
- {
- atomic_add_size(&ms_stats.vef_failed, 1);
-
- if (ms_setting.verbose) {
- fprintf(stderr,
- "\n<%d data verification failed\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\texpected data len: %d\n"
- "\texpected data: %.*s\n"
- "\treceived data len: %d\n"
- "\treceived data: %.*s\n",
- c->sfd, c->curr_task.item->key_size, c->curr_task.item->key_prefix,
- c->curr_task.item->key_size - (int) KEY_PREFIX_SIZE, orignkey,
- c->curr_task.item->value_size, c->curr_task.item->value_size, orignval, vlen,
- vlen, value);
- fflush(stderr);
- }
- }
- }
-
- c->curr_task.finish_verify = true;
-
- if (mlget_item) {
- mlget_item->finish_verify = true;
- }
- }
-} /* ms_verify_value */
-
-/**
- * For ASCII protocol, after store the data into the local
- * buffer, run this function to handle the data.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_ascii_complete_nread(ms_conn_t *c) {
- assert(c);
- assert(c->rbytes >= c->rvbytes);
- assert(c->protocol == ascii_prot);
- if (c->rvbytes > 2) {
- assert(c->rcurr[c->rvbytes - 1] == '\n' && c->rcurr[c->rvbytes - 2] == '\r');
- }
-
- /* multi-get */
- ms_mlget_task_item_t *mlget_item = NULL;
- if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
- || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
- {
- c->mlget_task.value_index++;
- mlget_item = &c->mlget_task.mlget_item[c->mlget_task.value_index];
-
- if (mlget_item->item->key_prefix == c->currcmd.key_prefix) {
- c->curr_task.item = mlget_item->item;
- c->curr_task.verify = mlget_item->verify;
- c->curr_task.finish_verify = mlget_item->finish_verify;
- mlget_item->get_miss = false;
- } else {
- /* Try to find the task item in multi-get task array */
- for (int i = 0; i < c->mlget_task.mlget_num; i++) {
- mlget_item = &c->mlget_task.mlget_item[i];
- if (mlget_item->item->key_prefix == c->currcmd.key_prefix) {
- c->curr_task.item = mlget_item->item;
- c->curr_task.verify = mlget_item->verify;
- c->curr_task.finish_verify = mlget_item->finish_verify;
- mlget_item->get_miss = false;
-
- break;
- }
- }
- }
- }
-
- ms_verify_value(c, mlget_item, c->rcurr, c->rvbytes - 2);
-
- c->curr_task.get_miss = false;
- c->rbytes -= c->rvbytes;
- c->rcurr = c->rcurr + c->rvbytes;
- assert(c->rcurr <= (c->rbuf + c->rsize));
- c->readval = false;
- c->rvbytes = 0;
-} /* ms_ascii_complete_nread */
-
-/**
- * For binary protocol, after store the data into the local
- * buffer, run this function to handle the data.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_bin_complete_nread(ms_conn_t *c) {
- assert(c);
- assert(c->rbytes >= c->rvbytes);
- assert(c->protocol == binary_prot);
-
- int extlen = c->binary_header.response.extlen;
- int keylen = c->binary_header.response.keylen;
- uint8_t opcode = c->binary_header.response.opcode;
-
- /* not get command or not include value, just return */
- if (((opcode != PROTOCOL_BINARY_CMD_GET) && (opcode != PROTOCOL_BINARY_CMD_GETQ))
- || (c->rvbytes <= extlen + keylen))
- {
- /* get miss */
- if (c->binary_header.response.opcode == PROTOCOL_BINARY_CMD_GET) {
- c->currcmd.retstat = MCD_END;
- c->curr_task.get_miss = true;
- }
-
- c->readval = false;
- c->rvbytes = 0;
- ms_reset_conn(c, false);
- return;
- }
-
- /* multi-get */
- ms_mlget_task_item_t *mlget_item = NULL;
- if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
- || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
- {
- c->mlget_task.value_index++;
- mlget_item = &c->mlget_task.mlget_item[c->mlget_task.value_index];
-
- c->curr_task.item = mlget_item->item;
- c->curr_task.verify = mlget_item->verify;
- c->curr_task.finish_verify = mlget_item->finish_verify;
- mlget_item->get_miss = false;
- }
-
- ms_verify_value(c, mlget_item, c->rcurr + extlen + keylen, c->rvbytes - extlen - keylen);
-
- c->currcmd.retstat = MCD_END;
- c->curr_task.get_miss = false;
- c->rbytes -= c->rvbytes;
- c->rcurr = c->rcurr + c->rvbytes;
- assert(c->rcurr <= (c->rbuf + c->rsize));
- c->readval = false;
- c->rvbytes = 0;
-
- if (ms_setting.mult_key_num > 1) {
- /* multi-get have check all the item */
- if (c->mlget_task.value_index == c->mlget_task.mlget_num - 1) {
- ms_reset_conn(c, false);
- }
- } else {
- /* single get */
- ms_reset_conn(c, false);
- }
-} /* ms_bin_complete_nread */
-
-/**
- * we get here after reading the value of get commands.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_complete_nread(ms_conn_t *c) {
- assert(c);
- assert(c->rbytes >= c->rvbytes);
- assert(c->protocol == ascii_prot || c->protocol == binary_prot);
-
- if (c->protocol == binary_prot) {
- ms_bin_complete_nread(c);
- } else {
- ms_ascii_complete_nread(c);
- }
-} /* ms_complete_nread */
-
-/**
- * Adds a message header to a connection.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_add_msghdr(ms_conn_t *c) {
- struct msghdr *msg;
-
- assert(c);
-
- if (c->msgsize == c->msgused) {
- msg = realloc(c->msglist, (size_t) c->msgsize * 2 * sizeof(struct msghdr));
- if (!msg)
- return -1;
-
- c->msglist = msg;
- c->msgsize *= 2;
- }
-
- msg = c->msglist + c->msgused;
-
- /**
- * this wipes msg_iovlen, msg_control, msg_controllen, and
- * msg_flags, the last 3 of which aren't defined on solaris:
- */
- memset(msg, 0, sizeof(struct msghdr));
-
- msg->msg_iov = &c->iov[c->iovused];
-
- if (c->udp && (c->srv_recv_addr_size > 0)) {
- msg->msg_name = &c->srv_recv_addr;
- msg->msg_namelen = c->srv_recv_addr_size;
- }
-
- c->msgbytes = 0;
- c->msgused++;
-
- if (c->udp) {
- /* Leave room for the UDP header, which we'll fill in later. */
- return ms_add_iov(c, NULL, UDP_HEADER_SIZE);
- }
-
- return EXIT_SUCCESS;
-} /* ms_add_msghdr */
-
-/**
- * Ensures that there is room for another structure iovec in a connection's
- * iov list.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_ensure_iov_space(ms_conn_t *c) {
- assert(c);
-
- if (c->iovused >= c->iovsize) {
- int i, iovnum;
- struct iovec *new_iov =
- (struct iovec *) realloc(c->iov, ((size_t) c->iovsize * 2) * sizeof(struct iovec));
- if (!new_iov)
- return -1;
-
- c->iov = new_iov;
- c->iovsize *= 2;
-
- /* Point all the msghdr structures at the new list. */
- for (i = 0, iovnum = 0; i < c->msgused; i++) {
- c->msglist[i].msg_iov = &c->iov[iovnum];
- iovnum += (int) c->msglist[i].msg_iovlen;
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_ensure_iov_space */
-
-/**
- * Adds data to the list of pending data that will be written out to a
- * connection.
- *
- * @param c, pointer of the concurrency
- * @param buf, the buffer includes data to send
- * @param len, the data length in the buffer
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_add_iov(ms_conn_t *c, const void *buf, int len) {
- struct msghdr *m;
- int leftover;
- bool limit_to_mtu;
-
- assert(c);
-
- do {
- m = &c->msglist[c->msgused - 1];
-
- /*
- * Limit UDP packets, to UDP_MAX_PAYLOAD_SIZE bytes.
- */
- limit_to_mtu = c->udp;
-
-#ifdef IOV_MAX
- /* We may need to start a new msghdr if this one is full. */
- if ((m->msg_iovlen == IOV_MAX) || (limit_to_mtu && (c->msgbytes >= UDP_MAX_SEND_PAYLOAD_SIZE)))
- {
- ms_add_msghdr(c);
- m = &c->msglist[c->msgused - 1];
- }
-#endif
-
- if (ms_ensure_iov_space(c))
- return -1;
-
- /* If the fragment is too big to fit in the datagram, split it up */
- if (limit_to_mtu && (len + c->msgbytes > UDP_MAX_SEND_PAYLOAD_SIZE)) {
- leftover = len + c->msgbytes - UDP_MAX_SEND_PAYLOAD_SIZE;
- len -= leftover;
- } else {
- leftover = 0;
- }
-
- m = &c->msglist[c->msgused - 1];
- m->msg_iov[m->msg_iovlen].iov_base = (void *) buf;
- m->msg_iov[m->msg_iovlen].iov_len = (size_t) len;
-
- c->msgbytes += len;
- c->iovused++;
- m->msg_iovlen++;
-
- buf = ((char *) buf) + len;
- len = leftover;
- } while (leftover > 0);
-
- return EXIT_SUCCESS;
-} /* ms_add_iov */
-
-/**
- * Constructs a set of UDP headers and attaches them to the outgoing messages.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_udp_headers(ms_conn_t *c) {
- int i;
- unsigned char *hdr;
-
- assert(c);
-
- c->request_id = ms_get_udp_request_id();
-
- if (c->msgused > c->hdrsize) {
- void *new_hdrbuf;
- if (c->hdrbuf)
- new_hdrbuf = realloc(c->hdrbuf, (size_t) c->msgused * 2 * UDP_HEADER_SIZE);
- else
- new_hdrbuf = malloc((size_t) c->msgused * 2 * UDP_HEADER_SIZE);
- if (!new_hdrbuf)
- return -1;
-
- c->hdrbuf = (unsigned char *) new_hdrbuf;
- c->hdrsize = c->msgused * 2;
- }
-
- /* If this is a multi-packet request, drop it. */
- if (c->udp && (c->msgused > 1)) {
- fprintf(stderr, "multi-packet request for UDP not supported.\n");
- return -1;
- }
-
- hdr = c->hdrbuf;
- for (i = 0; i < c->msgused; i++) {
- c->msglist[i].msg_iov[0].iov_base = (void *) hdr;
- c->msglist[i].msg_iov[0].iov_len = UDP_HEADER_SIZE;
- *hdr++ = (unsigned char) (c->request_id / 256);
- *hdr++ = (unsigned char) (c->request_id % 256);
- *hdr++ = (unsigned char) (i / 256);
- *hdr++ = (unsigned char) (i % 256);
- *hdr++ = (unsigned char) (c->msgused / 256);
- *hdr++ = (unsigned char) (c->msgused % 256);
- *hdr++ = (unsigned char) 1; /* support facebook memcached */
- *hdr++ = (unsigned char) 0;
- assert(hdr == ((unsigned char *) c->msglist[i].msg_iov[0].iov_base + UDP_HEADER_SIZE));
- }
-
- return EXIT_SUCCESS;
-} /* ms_build_udp_headers */
-
-/**
- * Transmit the next chunk of data from our list of msgbuf structures.
- *
- * @param c, pointer of the concurrency
- *
- * @return TRANSMIT_COMPLETE All done writing.
- * TRANSMIT_INCOMPLETE More data remaining to write.
- * TRANSMIT_SOFT_ERROR Can't write any more right now.
- * TRANSMIT_HARD_ERROR Can't write (c->state is set to conn_closing)
- */
-static int ms_transmit(ms_conn_t *c) {
- assert(c);
-
- if ((c->msgcurr < c->msgused) && (c->msglist[c->msgcurr].msg_iovlen == 0)) {
- /* Finished writing the current msg; advance to the next. */
- c->msgcurr++;
- }
-
- if (c->msgcurr < c->msgused) {
- ssize_t res;
- struct msghdr *m = &c->msglist[c->msgcurr];
-
- res = sendmsg(c->sfd, m, 0);
- if (res > 0) {
- atomic_add_size(&ms_stats.bytes_written, res);
-
- /* We've written some of the data. Remove the completed
- * iovec entries from the list of pending writes. */
- while (m->msg_iovlen > 0 && res >= (ssize_t) m->msg_iov->iov_len) {
- res -= (ssize_t) m->msg_iov->iov_len;
- m->msg_iovlen--;
- m->msg_iov++;
- }
-
- /* Might have written just part of the last iovec entry;
- * adjust it so the next write will do the rest. */
- if (res > 0) {
- m->msg_iov->iov_base = (void *) ((unsigned char *) m->msg_iov->iov_base + res);
- m->msg_iov->iov_len -= (size_t) res;
- }
- return TRANSMIT_INCOMPLETE;
- }
- if ((res == -1) && ((errno == EAGAIN) || (errno == EWOULDBLOCK))) {
- if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- return TRANSMIT_HARD_ERROR;
- }
- return TRANSMIT_SOFT_ERROR;
- }
-
- /* if res==0 or res==-1 and error is not EAGAIN or EWOULDBLOCK,
- * we have a real error, on which we close the connection */
- fprintf(stderr, "Failed to write, and not due to blocking.\n");
-
- ms_conn_set_state(c, conn_closing);
- return TRANSMIT_HARD_ERROR;
- } else {
- return TRANSMIT_COMPLETE;
- }
-} /* ms_transmit */
-
-/**
- * Shrinks a connection's buffers if they're too big. This prevents
- * periodic large "mget" response from server chewing lots of client
- * memory.
- *
- * This should only be called in between requests since it can wipe output
- * buffers!
- *
- * @param c, pointer of the concurrency
- */
-static void ms_conn_shrink(ms_conn_t *c) {
- assert(c);
-
- if (c->udp)
- return;
-
- if ((c->rsize > READ_BUFFER_HIGHWAT) && (c->rbytes < DATA_BUFFER_SIZE)) {
- char *newbuf;
-
- if (c->rcurr != c->rbuf)
- memmove(c->rbuf, c->rcurr, (size_t) c->rbytes);
-
- newbuf = (char *) realloc((void *) c->rbuf, DATA_BUFFER_SIZE);
-
- if (newbuf) {
- c->rbuf = newbuf;
- c->rsize = DATA_BUFFER_SIZE;
- }
- c->rcurr = c->rbuf;
- }
-
- if (c->udp && (c->rudpsize > UDP_DATA_BUFFER_HIGHWAT)
- && (c->rudpbytes + UDP_MAX_PAYLOAD_SIZE < UDP_DATA_BUFFER_SIZE))
- {
- char *new_rbuf = (char *) realloc(c->rudpbuf, (size_t) c->rudpsize * 2);
- if (new_rbuf) {
- c->rudpbuf = new_rbuf;
- c->rudpsize = UDP_DATA_BUFFER_SIZE;
- }
- /* TODO check error condition? */
- }
-
- if (c->msgsize > MSG_LIST_HIGHWAT) {
- struct msghdr *newbuf =
- (struct msghdr *) realloc((void *) c->msglist, MSG_LIST_INITIAL * sizeof(c->msglist[0]));
- if (newbuf) {
- c->msglist = newbuf;
- c->msgsize = MSG_LIST_INITIAL;
- }
- /* TODO check error condition? */
- }
-
- if (c->iovsize > IOV_LIST_HIGHWAT) {
- struct iovec *newbuf =
- (struct iovec *) realloc((void *) c->iov, IOV_LIST_INITIAL * sizeof(c->iov[0]));
- if (newbuf) {
- c->iov = newbuf;
- c->iovsize = IOV_LIST_INITIAL;
- }
- /* TODO check return value */
- }
-} /* ms_conn_shrink */
-
-/**
- * Sets a connection's current state in the state machine. Any special
- * processing that needs to happen on certain state transitions can
- * happen here.
- *
- * @param c, pointer of the concurrency
- * @param state, connection state
- */
-static void ms_conn_set_state(ms_conn_t *c, int state) {
- assert(c);
-
- if (state != c->state) {
- if (state == conn_read) {
- ms_conn_shrink(c);
- }
- c->state = state;
- }
-} /* ms_conn_set_state */
-
-/**
- * update the event if socks change state. for example: when
- * change the listen scoket read event to sock write event, or
- * change socket handler, we could call this function.
- *
- * @param c, pointer of the concurrency
- * @param new_flags, new event flags
- *
- * @return bool, if success, return true, else return false
- */
-static bool ms_update_event(ms_conn_t *c, const int new_flags) {
- assert(c);
-
- struct event_base *base = c->event.ev_base;
- if ((c->ev_flags == new_flags) && (ms_setting.rep_write_srv == 0)
- && (!ms_setting.facebook_test || (c->total_sfds == 1)))
- {
- return true;
- }
-
- if (event_del(&c->event) == -1) {
- /* try to delete the event again */
- if (event_del(&c->event) == -1) {
- return false;
- }
- }
-
- event_set(&c->event, c->sfd, (short) new_flags, ms_event_handler, (void *) c);
- event_base_set(base, &c->event);
- c->ev_flags = (short) new_flags;
-
- if (event_add(&c->event, NULL) == -1) {
- return false;
- }
-
- return true;
-} /* ms_update_event */
-
-/**
- * If user want to get the expected throughput, we could limit
- * the performance of memslap. we could give up some work and
- * just wait a short time. The function is used to check this
- * case.
- *
- * @param c, pointer of the concurrency
- *
- * @return bool, if success, return true, else return false
- */
-static bool ms_need_yield(ms_conn_t *c) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- int64_t tps = 0;
- int64_t time_diff = 0;
- struct timeval curr_time;
- ms_task_t *task = &c->curr_task;
-
- if (ms_setting.expected_tps > 0) {
- gettimeofday(&curr_time, NULL);
- time_diff = ms_time_diff(&ms_thread->startup_time, &curr_time);
- tps = (int64_t)(((task->get_opt + task->set_opt) / (uint64_t) time_diff) * 1000000);
-
- /* current throughput is greater than expected throughput */
- if (tps > ms_thread->thread_ctx->tps_perconn) {
- return true;
- }
- }
-
- return false;
-} /* ms_need_yield */
-
-/**
- * used to update the start time of each operation
- *
- * @param c, pointer of the concurrency
- */
-static void ms_update_start_time(ms_conn_t *c) {
- ms_task_item_t *item = c->curr_task.item;
-
- if ((ms_setting.stat_freq > 0) || c->udp || ((c->currcmd.cmd == CMD_SET) && (item->exp_time > 0)))
- {
- gettimeofday(&c->start_time, NULL);
- if ((c->currcmd.cmd == CMD_SET) && (item->exp_time > 0)) {
- /* record the current time */
- item->client_time = c->start_time.tv_sec;
- }
- }
-} /* ms_update_start_time */
-
-/**
- * run the state machine
- *
- * @param c, pointer of the concurrency
- */
-static void ms_drive_machine(ms_conn_t *c) {
- bool stop = false;
-
- assert(c);
-
- while (!stop) {
- switch (c->state) {
- case conn_read:
- if (c->readval) {
- if (c->rbytes >= c->rvbytes) {
- ms_complete_nread(c);
- break;
- }
- } else {
- if (ms_try_read_line(c)) {
- break;
- }
- }
-
- if (ms_try_read_network(c)) {
- break;
- }
-
- /* doesn't read all the response data, wait event wake up */
- if (!c->currcmd.isfinish) {
- if (!ms_update_event(c, EV_READ | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- break;
- }
- stop = true;
- break;
- }
-
- /* we have no command line and no data to read from network, next write */
- ms_conn_set_state(c, conn_write);
- memcpy(&c->precmd, &c->currcmd, sizeof(ms_cmdstat_t)); /* replicate command state */
-
- break;
-
- case conn_write:
- if (!c->ctnwrite && ms_need_yield(c)) {
- usleep(10);
-
- if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- break;
- }
- stop = true;
- break;
- }
-
- if (!c->ctnwrite && (ms_exec_task(c))) {
- ms_conn_set_state(c, conn_closing);
- break;
- }
-
- /* record the start time before starting to send data if necessary */
- if (!c->ctnwrite || (c->change_sfd && c->ctnwrite)) {
- if (c->change_sfd) {
- c->change_sfd = false;
- }
- ms_update_start_time(c);
- }
-
- /* change sfd if necessary */
- if (c->change_sfd) {
- c->ctnwrite = true;
- stop = true;
- break;
- }
-
- /* execute task until nothing need be written to network */
- if (!c->ctnwrite && (c->msgcurr == c->msgused)) {
- if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- break;
- }
- stop = true;
- break;
- }
-
- switch (ms_transmit(c)) {
- case TRANSMIT_COMPLETE:
- /* we have no data to write to network, next wait repose */
- if (!ms_update_event(c, EV_READ | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- c->ctnwrite = false;
- break;
- }
- ms_conn_set_state(c, conn_read);
- c->ctnwrite = false;
- stop = true;
- break;
-
- case TRANSMIT_INCOMPLETE:
- c->ctnwrite = true;
- break; /* Continue in state machine. */
-
- case TRANSMIT_HARD_ERROR:
- c->ctnwrite = false;
- break;
-
- case TRANSMIT_SOFT_ERROR:
- c->ctnwrite = true;
- stop = true;
- break;
-
- default:
- break;
- } /* switch */
-
- break;
-
- case conn_closing:
- /* recovery mode, need reconnect if connection close */
- if (ms_setting.reconnect
- && (!ms_global.time_out || ((ms_setting.run_time == 0) && (c->remain_exec_num > 0))))
- {
- if (ms_reconn(c)) {
- ms_conn_close(c);
- stop = true;
- break;
- }
-
- ms_reset_conn(c, false);
-
- if (c->total_sfds == 1) {
- if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- break;
- }
- }
-
- break;
- } else {
- ms_conn_close(c);
- stop = true;
- break;
- }
-
- default:
- assert(0);
- } /* switch */
- }
-} /* ms_drive_machine */
-
-/**
- * the event handler of each thread
- *
- * @param fd, the file descriptor of socket
- * @param which, event flag
- * @param arg, argument
- */
-void ms_event_handler(const int fd, const short which, void *arg) {
- ms_conn_t *c = (ms_conn_t *) arg;
-
- assert(c);
-
- c->which = which;
-
- /* sanity */
- if (fd != c->sfd) {
- fprintf(stderr, "Catastrophic: event fd: %d doesn't match conn fd: %d\n", fd, c->sfd);
- ms_conn_close(c);
- exit(1);
- }
- assert(fd == c->sfd);
-
- ms_drive_machine(c);
-
- /* wait for next event */
-} /* ms_event_handler */
-
-/**
- * get the next socket descriptor index to run for replication
- *
- * @param c, pointer of the concurrency
- * @param cmd, command(get or set )
- *
- * @return int, if success, return the index, else return EXIT_SUCCESS
- */
-static uint32_t ms_get_rep_sock_index(ms_conn_t *c, int cmd) {
- uint32_t sock_index = 0;
- uint32_t i = 0;
-
- if (c->total_sfds == 1) {
- return EXIT_SUCCESS;
- }
-
- if (ms_setting.rep_write_srv == 0) {
- return sock_index;
- }
-
- do {
- if (cmd == CMD_SET) {
- for (i = 0; i < ms_setting.rep_write_srv; i++) {
- if (c->tcpsfd[i] > 0) {
- break;
- }
- }
-
- if (i == ms_setting.rep_write_srv) {
- /* random get one replication server to read */
- sock_index = (uint32_t) random() % c->total_sfds;
- } else {
- /* random get one replication writing server to write */
- sock_index = (uint32_t) random() % ms_setting.rep_write_srv;
- }
- } else if (cmd == CMD_GET) {
- /* random get one replication server to read */
- sock_index = (uint32_t) random() % c->total_sfds;
- }
- } while (c->tcpsfd[sock_index] == 0);
-
- return sock_index;
-} /* ms_get_rep_sock_index */
-
-/**
- * get the next socket descriptor index to run
- *
- * @param c, pointer of the concurrency
- *
- * @return int, return the index
- */
-static uint32_t ms_get_next_sock_index(ms_conn_t *c) {
- uint32_t sock_index = 0;
-
- do {
- sock_index = (++c->cur_idx == c->total_sfds) ? 0 : c->cur_idx;
- } while (c->tcpsfd[sock_index] == 0);
-
- return sock_index;
-} /* ms_get_next_sock_index */
-
-/**
- * update socket event of the connections
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_update_conn_sock_event(ms_conn_t *c) {
- assert(c);
-
- switch (c->currcmd.cmd) {
- case CMD_SET:
- if (ms_setting.facebook_test && c->udp) {
- c->sfd = c->tcpsfd[0];
- c->udp = false;
- c->change_sfd = true;
- }
- break;
-
- case CMD_GET:
- if (ms_setting.facebook_test && !c->udp) {
- c->sfd = c->udpsfd;
- c->udp = true;
- c->change_sfd = true;
- }
- break;
-
- default:
- break;
- } /* switch */
-
- if (!c->udp && (c->total_sfds > 1)) {
- if (c->cur_idx != c->total_sfds) {
- if (ms_setting.rep_write_srv == 0) {
- c->cur_idx = ms_get_next_sock_index(c);
- } else {
- c->cur_idx = ms_get_rep_sock_index(c, c->currcmd.cmd);
- }
- } else {
- /* must select the first sock of the connection at the beginning */
- c->cur_idx = 0;
- }
-
- c->sfd = c->tcpsfd[c->cur_idx];
- assert(c->sfd);
- c->change_sfd = true;
- }
-
- if (c->change_sfd) {
- if (!ms_update_event(c, EV_WRITE | EV_PERSIST)) {
- fprintf(stderr, "Couldn't update event.\n");
- ms_conn_set_state(c, conn_closing);
- return -1;
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_update_conn_sock_event */
-
-/**
- * for ASCII protocol, this function build the set command
- * string and send the command.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_ascii_write_buf_set(ms_conn_t *c, ms_task_item_t *item) {
- int value_offset;
- int write_len;
- char *buffer = c->wbuf;
-
- write_len = snprintf(buffer, c->wsize, " %u %d %d\r\n", 0, item->exp_time, item->value_size);
-
- if (write_len > c->wsize || write_len < 0) {
- /* ought to be always enough. just fail for simplicity */
- fprintf(stderr, "output command line too long.\n");
- return -1;
- }
-
- if (item->value_offset == INVALID_OFFSET) {
- value_offset = item->key_suffix_offset;
- } else {
- value_offset = item->value_offset;
- }
-
- if ((ms_add_iov(c, "set ", 4))
- || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
- || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
- item->key_size - (int) KEY_PREFIX_SIZE)
-)
- || (ms_add_iov(c, buffer, write_len))
- || (ms_add_iov(c, &ms_setting.char_block[value_offset], item->value_size))
- || (ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c))))
- {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_build_ascii_write_buf_set */
-
-/**
- * used to send set command to server
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_mcd_set(ms_conn_t *c, ms_task_item_t *item) {
- assert(c);
-
- c->currcmd.cmd = CMD_SET;
- c->currcmd.isfinish = false;
- c->currcmd.retstat = MCD_FAILURE;
-
- if (ms_update_conn_sock_event(c)) {
- return -1;
- }
-
- c->msgcurr = 0;
- c->msgused = 0;
- c->iovused = 0;
- if (ms_add_msghdr(c)) {
- fprintf(stderr, "Out of memory preparing request.");
- return -1;
- }
-
- /* binary protocol */
- if (c->protocol == binary_prot) {
- if (ms_build_bin_write_buf_set(c, item)) {
- return -1;
- }
- } else {
- if (ms_build_ascii_write_buf_set(c, item)) {
- return -1;
- }
- }
-
- atomic_add_size(&ms_stats.obj_bytes, item->key_size + item->value_size);
- atomic_add_size(&ms_stats.cmd_set, 1);
-
- return EXIT_SUCCESS;
-} /* ms_mcd_set */
-
-/**
- * for ASCII protocol, this function build the get command
- * string and send the command.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_ascii_write_buf_get(ms_conn_t *c, ms_task_item_t *item) {
- if ((ms_add_iov(c, "get ", 4))
- || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
- || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
- item->key_size - (int) KEY_PREFIX_SIZE)
-)
- || (ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c))))
- {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_build_ascii_write_buf_get */
-
-/**
- * used to send the get command to server
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_mcd_get(ms_conn_t *c, ms_task_item_t *item) {
- assert(c);
-
- c->currcmd.cmd = CMD_GET;
- c->currcmd.isfinish = false;
- c->currcmd.retstat = MCD_FAILURE;
-
- if (ms_update_conn_sock_event(c)) {
- return -1;
- }
-
- c->msgcurr = 0;
- c->msgused = 0;
- c->iovused = 0;
- if (ms_add_msghdr(c)) {
- fprintf(stderr, "Out of memory preparing request.");
- return -1;
- }
-
- /* binary protocol */
- if (c->protocol == binary_prot) {
- if (ms_build_bin_write_buf_get(c, item)) {
- return -1;
- }
- } else {
- if (ms_build_ascii_write_buf_get(c, item)) {
- return -1;
- }
- }
-
- atomic_add_size(&ms_stats.cmd_get, 1);
-
- return EXIT_SUCCESS;
-} /* ms_mcd_get */
-
-/**
- * for ASCII protocol, this function build the multi-get command
- * string and send the command.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_ascii_write_buf_mlget(ms_conn_t *c) {
- ms_task_item_t *item;
-
- if (ms_add_iov(c, "get", 3)) {
- return -1;
- }
-
- for (int i = 0; i < c->mlget_task.mlget_num; i++) {
- item = c->mlget_task.mlget_item[i].item;
- assert(item);
- if ((ms_add_iov(c, " ", 1))
- || (ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE))
- || (ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
- item->key_size - (int) KEY_PREFIX_SIZE)
-))
- {
- return -1;
- }
- }
-
- if ((ms_add_iov(c, "\r\n", 2)) || (c->udp && (ms_build_udp_headers(c)))) {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_build_ascii_write_buf_mlget */
-
-/**
- * used to send the multi-get command to server
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_mcd_mlget(ms_conn_t *c) {
- ms_task_item_t *item;
-
- assert(c);
- assert(c->mlget_task.mlget_num >= 1);
-
- c->currcmd.cmd = CMD_GET;
- c->currcmd.isfinish = false;
- c->currcmd.retstat = MCD_FAILURE;
-
- if (ms_update_conn_sock_event(c)) {
- return -1;
- }
-
- c->msgcurr = 0;
- c->msgused = 0;
- c->iovused = 0;
- if (ms_add_msghdr(c)) {
- fprintf(stderr, "Out of memory preparing request.");
- return -1;
- }
-
- /* binary protocol */
- if (c->protocol == binary_prot) {
- if (ms_build_bin_write_buf_mlget(c)) {
- return -1;
- }
- } else {
- if (ms_build_ascii_write_buf_mlget(c)) {
- return -1;
- }
- }
-
- /* decrease operation time of each item */
- for (int i = 0; i < c->mlget_task.mlget_num; i++) {
- item = c->mlget_task.mlget_item[i].item;
- atomic_add_size(&ms_stats.cmd_get, 1);
- }
-
- (void) item;
-
- return EXIT_SUCCESS;
-} /* ms_mcd_mlget */
-
-/**
- * binary protocol support
- */
-
-/**
- * for binary protocol, parse the response of server
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_bin_process_response(ms_conn_t *c) {
- const char *errstr = NULL;
-
- assert(c);
-
- uint32_t bodylen = c->binary_header.response.bodylen;
- uint8_t opcode = c->binary_header.response.opcode;
- uint16_t status = c->binary_header.response.status;
-
- if (bodylen > 0) {
- c->rvbytes = (int32_t) bodylen;
- c->readval = true;
- return EXIT_FAILURE;
- } else {
- switch (status) {
- case PROTOCOL_BINARY_RESPONSE_SUCCESS:
- if (opcode == PROTOCOL_BINARY_CMD_SET) {
- c->currcmd.retstat = MCD_STORED;
- } else if (opcode == PROTOCOL_BINARY_CMD_DELETE) {
- c->currcmd.retstat = MCD_DELETED;
- } else if (opcode == PROTOCOL_BINARY_CMD_GET) {
- c->currcmd.retstat = MCD_END;
- }
- break;
-
- case PROTOCOL_BINARY_RESPONSE_ENOMEM:
- errstr = "Out of memory";
- c->currcmd.retstat = MCD_SERVER_ERROR;
- break;
-
- case PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND:
- errstr = "Unknown command";
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- break;
-
- case PROTOCOL_BINARY_RESPONSE_KEY_ENOENT:
- errstr = "Not found";
- c->currcmd.retstat = MCD_NOTFOUND;
- break;
-
- case PROTOCOL_BINARY_RESPONSE_EINVAL:
- errstr = "Invalid arguments";
- c->currcmd.retstat = MCD_PROTOCOL_ERROR;
- break;
-
- case PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS:
- errstr = "Data exists for key.";
- break;
-
- case PROTOCOL_BINARY_RESPONSE_E2BIG:
- errstr = "Too large.";
- c->currcmd.retstat = MCD_SERVER_ERROR;
- break;
-
- case PROTOCOL_BINARY_RESPONSE_NOT_STORED:
- errstr = "Not stored.";
- c->currcmd.retstat = MCD_NOTSTORED;
- break;
-
- default:
- errstr = "Unknown error";
- c->currcmd.retstat = MCD_UNKNOWN_READ_FAILURE;
- break;
- } /* switch */
-
- if (errstr) {
- fprintf(stderr, "%s\n", errstr);
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_bin_process_response */
-
-/* build binary header and add the header to the buffer to send */
-
-/**
- * build binary header and add the header to the buffer to send
- *
- * @param c, pointer of the concurrency
- * @param opcode, operation code
- * @param hdr_len, length of header
- * @param key_len, length of key
- * @param body_len. length of body
- */
-static void ms_add_bin_header(ms_conn_t *c, uint8_t opcode, uint8_t hdr_len, uint16_t key_len,
- uint32_t body_len) {
- protocol_binary_request_header *header;
-
- assert(c);
-
- header = (protocol_binary_request_header *) c->wcurr;
-
- header->request.magic = (uint8_t) PROTOCOL_BINARY_REQ;
- header->request.opcode = (uint8_t) opcode;
- header->request.keylen = htons(key_len);
-
- header->request.extlen = (uint8_t) hdr_len;
- header->request.datatype = (uint8_t) PROTOCOL_BINARY_RAW_BYTES;
- header->request.vbucket = 0;
-
- header->request.bodylen = htonl(body_len);
- header->request.opaque = 0;
- header->request.cas = 0;
-
- ms_add_iov(c, c->wcurr, sizeof(header->request));
-} /* ms_add_bin_header */
-
-/**
- * add the key to the socket write buffer array
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- */
-static void ms_add_key_to_iov(ms_conn_t *c, ms_task_item_t *item) {
- ms_add_iov(c, (char *) &item->key_prefix, (int) KEY_PREFIX_SIZE);
- ms_add_iov(c, &ms_setting.char_block[item->key_suffix_offset],
- item->key_size - (int) KEY_PREFIX_SIZE);
-}
-
-/**
- * for binary protocol, this function build the set command
- * and add the command to send buffer array.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_bin_write_buf_set(ms_conn_t *c, ms_task_item_t *item) {
- assert(c->wbuf == c->wcurr);
-
- int value_offset;
- protocol_binary_request_set *rep = (protocol_binary_request_set *) c->wcurr;
- uint16_t keylen = (uint16_t) item->key_size;
- uint32_t bodylen =
- (uint32_t) sizeof(rep->message.body) + (uint32_t) keylen + (uint32_t) item->value_size;
-
- ms_add_bin_header(c, PROTOCOL_BINARY_CMD_SET, sizeof(rep->message.body), keylen, bodylen);
- rep->message.body.flags = 0;
- rep->message.body.expiration = htonl((uint32_t) item->exp_time);
- ms_add_iov(c, &rep->message.body, sizeof(rep->message.body));
- ms_add_key_to_iov(c, item);
-
- if (item->value_offset == INVALID_OFFSET) {
- value_offset = item->key_suffix_offset;
- } else {
- value_offset = item->value_offset;
- }
- ms_add_iov(c, &ms_setting.char_block[value_offset], item->value_size);
-
- return EXIT_SUCCESS;
-} /* ms_build_bin_write_buf_set */
-
-/**
- * for binary protocol, this function build the get command and
- * add the command to send buffer array.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_bin_write_buf_get(ms_conn_t *c, ms_task_item_t *item) {
- assert(c->wbuf == c->wcurr);
-
- ms_add_bin_header(c, PROTOCOL_BINARY_CMD_GET, 0, (uint16_t) item->key_size,
- (uint32_t) item->key_size);
- ms_add_key_to_iov(c, item);
-
- return EXIT_SUCCESS;
-} /* ms_build_bin_write_buf_get */
-
-/**
- * for binary protocol, this function build the multi-get
- * command and add the command to send buffer array.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_build_bin_write_buf_mlget(ms_conn_t *c) {
- ms_task_item_t *item;
-
- assert(c->wbuf == c->wcurr);
-
- for (int i = 0; i < c->mlget_task.mlget_num; i++) {
- item = c->mlget_task.mlget_item[i].item;
- assert(item);
-
- ms_add_bin_header(c, PROTOCOL_BINARY_CMD_GET, 0, (uint16_t) item->key_size,
- (uint32_t) item->key_size);
- ms_add_key_to_iov(c, item);
- c->wcurr += sizeof(protocol_binary_request_get);
- }
-
- c->wcurr = c->wbuf;
-
- return EXIT_SUCCESS;
-} /* ms_build_bin_write_buf_mlget */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_CONN_H
-#define MS_CONN_H
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <event.h>
-#include <netdb.h>
-
-#include "ms_task.h"
-#include "libmemcachedprotocol-0.0/binary.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define DATA_BUFFER_SIZE \
- (1024 * 1024 + 2048) /* read buffer, 1M + 2k, enough for the max value(1M) */
-#define WRITE_BUFFER_SIZE (32 * 1024) /* write buffer, 32k */
-#define UDP_DATA_BUFFER_SIZE (1 * 1024 * 1024) /* read buffer for UDP, 1M */
-#define UDP_MAX_PAYLOAD_SIZE 1400 /* server limit UDP payload size */
-#define UDP_MAX_SEND_PAYLOAD_SIZE 1400 /* mtu size is 1500 */
-#define UDP_HEADER_SIZE 8 /* UDP header size */
-#define MAX_SENDBUF_SIZE (256 * 1024 * 1024) /* Maximum socket buffer size */
-#define SOCK_WAIT_TIMEOUT 30 /* maximum waiting time of UDP, 30s */
-#define MAX_UDP_PACKET (1 << 16) /* maximum UDP packets, 65536 */
-
-/* Initial size of the sendmsg() scatter/gather array. */
-#define IOV_LIST_INITIAL 400
-
-/* Initial number of sendmsg() argument structures to allocate. */
-#define MSG_LIST_INITIAL 10
-
-/* High water marks for buffer shrinking */
-#define READ_BUFFER_HIGHWAT (2 * DATA_BUFFER_SIZE)
-#define UDP_DATA_BUFFER_HIGHWAT (4 * UDP_DATA_BUFFER_SIZE)
-#define IOV_LIST_HIGHWAT 600
-#define MSG_LIST_HIGHWAT 100
-
-/* parse udp header */
-#define HEADER_TO_REQID(ptr) ((uint16_t) *ptr * 256 + (uint16_t) * (ptr + 1))
-#define HEADER_TO_SEQNUM(ptr) ((uint16_t) * (ptr + 2) * 256 + (uint16_t) * (ptr + 3))
-#define HEADER_TO_PACKETS(ptr) ((uint16_t) * (ptr + 4) * 256 + (uint16_t) * (ptr + 5))
-
-/* states of connection */
-enum conn_states {
- conn_read, /* reading in a command line */
- conn_write, /* writing out a simple response */
- conn_closing /* closing this connection */
-};
-
-/* returned states of memcached command */
-enum mcd_ret {
- MCD_SUCCESS, /* command success */
- MCD_FAILURE, /* command failure */
- MCD_UNKNOWN_READ_FAILURE, /* unknown read failure */
- MCD_PROTOCOL_ERROR, /* protocol error */
- MCD_CLIENT_ERROR, /* client error, wrong command */
- MCD_SERVER_ERROR, /* server error, server run command failed */
- MCD_DATA_EXISTS, /* object is existent in server */
- MCD_NOTSTORED, /* server doesn't set the object successfully */
- MCD_STORED, /* server set the object successfully */
- MCD_NOTFOUND, /* server not find the object */
- MCD_END, /* end of the response of get command */
- MCD_DELETED, /* server delete the object successfully */
- MCD_STAT /* response of stats command */
-};
-
-/* used to store the current or previous running command state */
-typedef struct cmdstat {
- int cmd; /* command name */
- int retstat; /* return state of this command */
- bool isfinish; /* if it read all the response data */
- uint64_t key_prefix; /* key prefix */
-} ms_cmdstat_t;
-
-/* udp packet structure */
-typedef struct udppkt {
- uint8_t *header; /* udp header of the packet */
- char *data; /* udp data of the packet */
- int rbytes; /* number of data in the packet */
- int copybytes; /* number of copied data in the packet */
-} ms_udppkt_t;
-
-/* three protocols supported */
-enum protocol {
- ascii_prot = 3, /* ASCII protocol */
- binary_prot /* binary protocol */
-};
-
-/**
- * concurrency structure
- *
- * Each thread has a libevent to manage the events of network.
- * Each thread has one or more self-governed concurrencies;
- * each concurrency has one or more socket connections. This
- * concurrency structure includes all the private variables of
- * the concurrency.
- */
-typedef struct conn {
- uint32_t conn_idx; /* connection index in the thread */
- int sfd; /* current tcp sock handler of the connection structure */
- int udpsfd; /* current udp sock handler of the connection structure*/
- int state; /* state of the connection */
- struct event event; /* event for libevent */
- short ev_flags; /* event flag for libevent */
- short which; /* which events were just triggered */
- bool change_sfd; /* whether change sfd */
-
- int *tcpsfd; /* TCP sock array */
- uint32_t total_sfds; /* how many socks in the tcpsfd array */
- uint32_t alive_sfds; /* alive socks */
- uint32_t cur_idx; /* current sock index in tcpsfd array */
-
- ms_cmdstat_t precmd; /* previous command state */
- ms_cmdstat_t currcmd; /* current command state */
-
- char *rbuf; /* buffer to read commands into */
- char *rcurr; /* but if we parsed some already, this is where we stopped */
- int rsize; /* total allocated size of rbuf */
- int rbytes; /* how much data, starting from rcur, do we have unparsed */
-
- bool readval; /* read value state, read known data size */
- int rvbytes; /* total value size need to read */
-
- char *wbuf; /* buffer to write commands out */
- char *wcurr; /* for multi-get, where we stopped */
- int wsize; /* total allocated size of wbuf */
- bool ctnwrite; /* continue to write */
-
- /* data for the mwrite state */
- struct iovec *iov;
- int iovsize; /* number of elements allocated in iov[] */
- int iovused; /* number of elements used in iov[] */
-
- struct msghdr *msglist;
- int msgsize; /* number of elements allocated in msglist[] */
- int msgused; /* number of elements used in msglist[] */
- int msgcurr; /* element in msglist[] being transmitted now */
- int msgbytes; /* number of bytes in current msg */
-
- /* data for UDP clients */
- bool udp; /* is this is a UDP "connection" */
- uint32_t request_id; /* UDP request ID of current operation, if this is a UDP "connection" */
- uint8_t *hdrbuf; /* udp packet headers */
- int hdrsize; /* number of headers' worth of space is allocated */
- struct sockaddr srv_recv_addr; /* Sent the most recent request to which server */
- socklen_t srv_recv_addr_size;
-
- /* udp read buffer */
- char *rudpbuf; /* buffer to read commands into for udp */
- int rudpsize; /* total allocated size of rudpbuf */
- int rudpbytes; /* how much data, starting from rudpbuf */
-
- /* order udp packet */
- ms_udppkt_t *udppkt; /* the offset of udp packet in rudpbuf */
- int packets; /* number of total packets need to read */
- int recvpkt; /* number of received packets */
- int pktcurr; /* current packet in rudpbuf being ordered */
- int ordcurr; /* current ordered packet */
-
- ms_task_item_t *item_win; /* task sequence */
- int win_size; /* current task window size */
- uint64_t set_cursor; /* current set item index in the item window */
- ms_task_t curr_task; /* current running task */
- ms_mlget_task_t mlget_task; /* multi-get task */
-
- int warmup_num; /* to run how many warm up operations*/
- int remain_warmup_num; /* left how many warm up operations to run */
- int64_t exec_num; /* to run how many task operations */
- int64_t remain_exec_num; /* how many remained task operations to run */
-
- /* response time statistic and time out control */
- struct timeval start_time; /* start time of current operation(s) */
- struct timeval end_time; /* end time of current operation(s) */
-
- /* Binary protocol stuff */
- protocol_binary_response_header binary_header; /* local temporary binary header */
- enum protocol protocol; /* which protocol this connection speaks */
-} ms_conn_t;
-
-/* used to generate the key prefix */
-uint64_t ms_get_key_prefix(void);
-
-/**
- * setup a connection, each connection structure of each
- * thread must call this function to initialize.
- */
-int ms_setup_conn(ms_conn_t *c);
-
-/* after one operation completes, reset the connection */
-void ms_reset_conn(ms_conn_t *c, bool timeout);
-
-/**
- * reconnect several disconnected socks in the connection
- * structure, the ever-1-second timer of the thread will check
- * whether some socks in the connections disconnect. if
- * disconnect, reconnect the sock.
- */
-int ms_reconn_socks(ms_conn_t *c);
-
-/* used to send set command to server */
-int ms_mcd_set(ms_conn_t *c, ms_task_item_t *item);
-
-/* used to send the get command to server */
-int ms_mcd_get(ms_conn_t *c, ms_task_item_t *item);
-
-/* used to send the multi-get command to server */
-int ms_mcd_mlget(ms_conn_t *c);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_CONN_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_MEMSLAP_H
-#define MS_MEMSLAP_H
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <assert.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <pthread.h>
-#if !defined(__cplusplus)
-# include <stdbool.h>
-#endif
-#include <math.h>
-
-#include "ms_stats.h"
-#include "ms_atomic.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* command line option */
-typedef enum {
- OPT_VERSION = 'V',
- OPT_HELP = 'h',
- OPT_UDP = 'U',
- OPT_SERVERS = 's',
- OPT_EXECUTE_NUMBER = 'x',
- OPT_THREAD_NUMBER = 'T',
- OPT_CONCURRENCY = 'c',
- OPT_FIXED_LTH = 'X',
- OPT_VERIFY = 'v',
- OPT_GETS_DIVISION = 'd',
- OPT_TIME = 't',
- OPT_CONFIG_CMD = 'F',
- OPT_WINDOW_SIZE = 'w',
- OPT_EXPIRE = 'e',
- OPT_STAT_FREQ = 'S',
- OPT_RECONNECT = 'R',
- OPT_VERBOSE = 'b',
- OPT_FACEBOOK_TEST = 'a',
- OPT_SOCK_PER_CONN = 'n',
- OPT_BINARY_PROTOCOL = 'B',
- OPT_OVERWRITE = 'o',
- OPT_TPS = 'P',
- OPT_REP_WRITE_SRV = 'p'
-} ms_options_t;
-
-/* global statistic of response time */
-typedef struct statistic {
- pthread_mutex_t stat_mutex; /* synchronize the following members */
-
- ms_stat_t get_stat; /* statistics of get command */
- ms_stat_t set_stat; /* statistics of set command */
- ms_stat_t total_stat; /* statistics of both get and set commands */
-} ms_statistic_t;
-
-/* global status statistic structure */
-typedef struct stats {
- ATOMIC uint32_t active_conns; /* active connections */
- ATOMIC size_t bytes_read; /* read bytes */
- ATOMIC size_t bytes_written; /* written bytes */
- ATOMIC size_t obj_bytes; /* object bytes */
- ATOMIC size_t pre_cmd_get; /* previous total get command count */
- ATOMIC size_t pre_cmd_set; /* previous total set command count */
- ATOMIC size_t cmd_get; /* current total get command count */
- ATOMIC size_t cmd_set; /* current total set command count */
- ATOMIC size_t get_misses; /* total objects of get miss */
- ATOMIC size_t vef_miss; /* total objects of verification miss */
- ATOMIC size_t vef_failed; /* total objects of verification failed */
- ATOMIC size_t unexp_unget; /* total objects which is unexpired but not get */
- ATOMIC size_t exp_get; /* total objects which is expired but get */
- ATOMIC size_t pkt_disorder; /* disorder packages of UDP */
- ATOMIC size_t pkt_drop; /* packages dropped of UDP */
- ATOMIC size_t udp_timeout; /* how many times timeout of UDP happens */
-} ms_stats_t;
-
-/* lock adapter */
-typedef struct sync_lock {
- uint32_t count;
- pthread_mutex_t lock;
- pthread_cond_t cond;
-} ms_sync_lock_t;
-
-/* global variable structure */
-typedef struct global {
- /* synchronize lock */
- ms_sync_lock_t init_lock;
- ms_sync_lock_t warmup_lock;
- ms_sync_lock_t run_lock;
-
- /* mutex for outputing error log synchronously when memslap crashes */
- pthread_mutex_t quit_mutex;
-
- /* mutex for generating key prefix */
- pthread_mutex_t seq_mutex;
-
- /* global synchronous flags for slap mode */
- bool finish_warmup;
- bool time_out;
-} ms_global_t;
-
-/* global structure */
-extern ms_global_t ms_global;
-
-/* global stats information structure */
-extern ms_stats_t ms_stats;
-
-/* global statistic structure */
-extern ms_statistic_t ms_statistic;
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_MEMSLAP_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#include "libmemcached/memcached.h"
-
-#include <ctype.h>
-#include <inttypes.h>
-#include <limits.h>
-#include <pwd.h>
-#include <strings.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "ms_setting.h"
-#include "ms_conn.h"
-
-#define MAX_EXEC_NUM 0x4000000000000000 /* 1 << 62 */
-#define ADDR_ALIGN(addr) ((addr + 15) & ~(16 - 1)) /* 16 bytes aligned */
-#define RAND_CHAR_SIZE (10 * 1024 * 1024) /* 10M character table */
-#define RESERVED_RAND_CHAR_SIZE (2 * 1024 * 1024) /* reserved 2M to avoid pointer sloping over */
-
-#define DEFAULT_CONFIG_NAME ".memslap.cnf"
-
-#define DEFAULT_THREADS_NUM 1 /* default start one thread */
-#define DEFAULT_CONNS_NUM 16 /* default each thread with 16 connections */
-#define DEFAULT_EXE_NUM 0 /* default execute number is 0 */
-#define DEFAULT_VERIFY_RATE 0.0 /* default it doesn't do data verification */
-#define DEFAULT_OVERWRITE_RATE 0.0 /* default it doesn't do overwrite */
-#define DEFAULT_DIV 1 /* default it runs single get */
-#define DEFAULT_RUN_TIME 600 /* default run time 10 minutes */
-#define DEFAULT_WINDOW_SIZE (10 * UNIT_ITEMS_COUNT) /* default window size is 10k */
-#define DEFAULT_SOCK_PER_CONN 1 /* default socks per connection is 1 */
-
-/* Use this for string generation */
-#define CHAR_COUNT 64 /* number of characters used to generate character table */
-const char ALPHANUMBERICS[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-";
-
-ms_setting_st ms_setting; /* store the settings specified by user */
-
-/* read setting from configuration file */
-static void ms_get_serverlist(char *str);
-static uint32_t ms_get_cpu_count(void);
-ms_conf_type_t ms_get_conf_type(char *line);
-static int ms_is_line_data(char *line);
-static int ms_read_is_data(char *line, ssize_t nread);
-static void ms_no_config_file(void);
-static void ms_parse_cfg_file(char *cfg_file);
-
-/* initialize setting structure */
-static void ms_init_random_block(void);
-static void ms_calc_avg_size(void);
-static int ms_shuffle_distr(ms_distr_t *distr, int length);
-static void ms_build_distr(void);
-static void ms_print_setting(void);
-static void ms_setting_slapmode_init_pre(void);
-static void ms_setting_slapmode_init_post(void);
-
-#if !defined(HAVE_GETLINE)
-# include <limits.h>
-static ssize_t getline(char **line, size_t *line_size, FILE *fp) {
- char delim = '\n';
- ssize_t result = 0;
- size_t cur_len = 0;
-
- if (line == NULL || line_size == NULL || fp == NULL) {
- errno = EINVAL;
- return -1;
- }
-
- if (*line == NULL || *line_size == 0) {
- char *new_line;
- *line_size = 120;
- new_line = (char *) realloc(*line, *line_size);
- if (new_line == NULL) {
- result = -1;
- return result;
- }
- *line = new_line;
- }
-
- for (;;) {
- int i = getc(fp);
- if (i == EOF) {
- result = -1;
- break;
- }
-
- /* Make enough space for len+1 (for final NUL) bytes. */
- if (cur_len + 1 >= *line_size) {
- size_t needed_max = SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
- size_t needed = (2 * (*line_size)) + 1;
- char *new_line;
-
- if (needed_max < needed)
- needed = needed_max;
- if (cur_len + 1 >= needed) {
- result = -1;
- errno = EOVERFLOW;
- return result;
- }
-
- new_line = (char *) realloc(*line, needed);
- if (new_line == NULL) {
- result = -1;
- return result;
- }
-
- *line = new_line;
- *line_size = needed;
- }
-
- (*line)[cur_len] = (char) i;
- cur_len++;
-
- if (i == delim)
- break;
- }
- (*line)[cur_len] = '\0';
- if (cur_len)
- return (ssize_t) cur_len;
- return result;
-}
-#endif
-
-/**
- * parse the server list string, and build the servers
- * information structure array. this function is used to parse
- * the command line options specified by user.
- *
- * @param str, the string of server list
- */
-static void ms_get_serverlist(char *str) {
- ms_mcd_server_t *srvs = NULL;
-
- /**
- * Servers list format is like this. For example:
- * "localhost:11108, localhost:11109"
- */
- memcached_server_st *server_pool;
- server_pool = memcached_servers_parse(str);
-
- for (uint32_t loop = 0; loop < memcached_server_list_count(server_pool); loop++) {
- assert(ms_setting.srv_cnt < ms_setting.total_srv_cnt);
- strcpy(ms_setting.servers[ms_setting.srv_cnt].srv_host_name, server_pool[loop].hostname);
- ms_setting.servers[ms_setting.srv_cnt].srv_port = server_pool[loop].port;
- ms_setting.servers[ms_setting.srv_cnt].disconn_cnt = 0;
- ms_setting.servers[ms_setting.srv_cnt].reconn_cnt = 0;
- ms_setting.srv_cnt++;
-
- if (ms_setting.srv_cnt >= ms_setting.total_srv_cnt) {
- srvs = (ms_mcd_server_t *) realloc(
- ms_setting.servers, (size_t) ms_setting.total_srv_cnt * sizeof(ms_mcd_server_t) * 2);
- if (srvs == NULL) {
- fprintf(stderr, "Can't reallocate servers structure.\n");
- exit(1);
- }
- ms_setting.servers = srvs;
- ms_setting.total_srv_cnt *= 2;
- }
- }
-
- memcached_server_free(server_pool);
-} /* ms_get_serverlist */
-
-/**
- * used to get the CPU count of the current system
- *
- * @return return the cpu count if get, else return EXIT_FAILURE
- */
-static uint32_t ms_get_cpu_count() {
-#ifdef HAVE__SC_NPROCESSORS_ONLN
- return sysconf(_SC_NPROCESSORS_CONF);
-
-#else
-# ifdef HAVE_CPU_SET_T
- int cpu_count = 0;
- cpu_set_t cpu_set;
-
- sched_getaffinity(0, sizeof(cpu_set_t), &cpu_set);
-
- for (int i = 0; i < (sizeof(cpu_set_t) * 8); i++) {
- if (CPU_ISSET(i, &cpu_set)) {
- cpu_count++;
- }
- }
-
- return cpu_count;
-
-# endif
-#endif
-
- /* the system with one cpu at least */
- return EXIT_FAILURE;
-} /* ms_get_cpu_count */
-
-/**
- * used to get the configure type based on the type string read
- * from the configuration file.
- *
- * @param line, string of one line
- *
- * @return ms_conf_type_t
- */
-ms_conf_type_t ms_get_conf_type(char *line) {
- if (!memcmp(line, "key", strlen("key"))) {
- return CONF_KEY;
- } else if (!memcmp(line, "value", strlen("value"))) {
- return CONF_VALUE;
- } else if (!memcmp(line, "cmd", strlen("cmd"))) {
- return CONF_CMD;
- } else {
- return CONF_NULL;
- }
-} /* ms_get_conf_type */
-
-/**
- * judge whether the line is a line with useful data. used to
- * parse the configuration file.
- *
- * @param line, string of one line
- *
- * @return if success, return EXIT_FAILURE, else return EXIT_SUCCESS
- */
-static int ms_is_line_data(char *line) {
- assert(line);
-
- char *begin_ptr = line;
-
- while (isspace(*begin_ptr)) {
- begin_ptr++;
- }
- if ((begin_ptr[0] == '\0') || (begin_ptr[0] == '#'))
- return EXIT_SUCCESS;
-
- return EXIT_FAILURE;
-} /* ms_is_line_data */
-
-/**
- * function to bypass blank line and comments
- *
- * @param line, string of one line
- * @param nread, length of the line
- *
- * @return if it's EOF or not line data, return EXIT_SUCCESS, else return EXIT_FAILURE
- */
-static int ms_read_is_data(char *line, ssize_t nread) {
- if ((nread == EOF) || !ms_is_line_data(line))
- return EXIT_SUCCESS;
-
- return EXIT_FAILURE;
-} /* ms_read_is_data */
-
-/**
- * if no configuration file, use this function to create the default
- * configuration file.
- */
-static void ms_no_config_file() {
- char userpath[PATH_MAX];
- struct passwd *usr = NULL;
- FILE *fd;
-
- usr = getpwuid(getuid());
-
- snprintf(userpath, PATH_MAX, "%s/%s", usr->pw_dir, DEFAULT_CONFIG_NAME);
-
- if (access(userpath, F_OK | R_OK) == 0)
- goto exit;
-
- fd = fopen(userpath, "w+");
-
- if (fd == NULL) {
- fprintf(stderr, "Could not create default configure file %s\n", userpath);
- perror("fopen");
- exit(1);
- }
- fprintf(fd, "%s", DEFAULT_CONGIF_STR);
- fclose(fd);
-
-exit:
- ms_setting.cfg_file = strdup(userpath);
-} /* ms_no_config_file */
-
-/**
- * parse the configuration file
- *
- * @param cfg_file, the configuration file name
- */
-static void ms_parse_cfg_file(char *cfg_file) {
- FILE *f;
- size_t start_len, end_len;
- double proportion;
- char *line = NULL;
- size_t read_len;
- ssize_t nread;
- int cmd_type;
- ms_conf_type_t conf_type;
- int end_of_file = 0;
- ms_key_distr_t *key_distr = NULL;
- ms_value_distr_t *val_distr = NULL;
-
- if (cfg_file == NULL) {
- ms_no_config_file();
- cfg_file = ms_setting.cfg_file;
- }
-
- /*read key value configure file*/
- if ((f = fopen(cfg_file, "r")) == NULL) {
- fprintf(stderr, "Can not open file: '%s'.\n", cfg_file);
- exit(1);
- }
-
- while (1) {
- if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
- && (nread != EOF)) /* bypass blank line */
- continue;
-
- if (nread == EOF) {
- fprintf(stderr, "Bad configuration file, no configuration find.\n");
- exit(1);
- }
- conf_type = ms_get_conf_type(line);
- break;
- }
-
- while (!end_of_file) {
- switch (conf_type) {
- case CONF_KEY:
- while (1) {
- if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
- && (nread != EOF)) /* bypass blank line */
- continue;
-
- if (nread != EOF) {
- if (sscanf(line, "%zu %zu %lf ", &start_len, &end_len, &proportion) != 3) {
- conf_type = ms_get_conf_type(line);
- break;
- }
- ms_setting.key_distr[ms_setting.key_rng_cnt].start_len = start_len;
- ms_setting.key_distr[ms_setting.key_rng_cnt].end_len = end_len;
- ms_setting.key_distr[ms_setting.key_rng_cnt].key_prop = proportion;
- ms_setting.key_rng_cnt++;
-
- if (ms_setting.key_rng_cnt >= ms_setting.total_key_rng_cnt) {
- key_distr = (ms_key_distr_t *) realloc(ms_setting.key_distr,
- (size_t) ms_setting.total_key_rng_cnt
- * sizeof(ms_key_distr_t) * 2);
- if (key_distr == NULL) {
- fprintf(stderr, "Can't reallocate key distribution structure.\n");
- exit(1);
- }
- ms_setting.key_distr = key_distr;
- ms_setting.total_key_rng_cnt *= 2;
- }
- continue;
- }
- end_of_file = 1;
- break;
- }
- break;
-
- case CONF_VALUE:
- while (1) {
- if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
- && (nread != EOF)) /* bypass blank line */
- continue;
-
- if (nread != EOF) {
- if (sscanf(line, "%zu %zu %lf", &start_len, &end_len, &proportion) != 3) {
- conf_type = ms_get_conf_type(line);
- break;
- }
- ms_setting.value_distr[ms_setting.val_rng_cnt].start_len = start_len;
- ms_setting.value_distr[ms_setting.val_rng_cnt].end_len = end_len;
- ms_setting.value_distr[ms_setting.val_rng_cnt].value_prop = proportion;
- ms_setting.val_rng_cnt++;
-
- if (ms_setting.val_rng_cnt >= ms_setting.total_val_rng_cnt) {
- val_distr = (ms_value_distr_t *) realloc(ms_setting.value_distr,
- (size_t) ms_setting.total_val_rng_cnt
- * sizeof(ms_value_distr_t) * 2);
- if (val_distr == NULL) {
- fprintf(stderr, "Can't reallocate key distribution structure.\n");
- exit(1);
- }
- ms_setting.value_distr = val_distr;
- ms_setting.total_val_rng_cnt *= 2;
- }
- continue;
- }
- end_of_file = 1;
- break;
- }
- break;
-
- case CONF_CMD:
- while (1) {
- if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
- && (nread != EOF)) /* bypass blank line */
- continue;
-
- if (nread != EOF) {
- if (sscanf(line, "%d %lf", &cmd_type, &proportion) != 2) {
- conf_type = ms_get_conf_type(line);
- break;
- }
- if (cmd_type >= CMD_NULL) {
- continue;
- }
- ms_setting.cmd_distr[ms_setting.cmd_used_count].cmd_type = cmd_type;
- ms_setting.cmd_distr[ms_setting.cmd_used_count].cmd_prop = proportion;
- ms_setting.cmd_used_count++;
- continue;
- }
- end_of_file = 1;
- break;
- }
-
- case CONF_NULL:
- while (1) {
- if ((((nread = getline(&line, &read_len, f)) == 1) || !ms_read_is_data(line, nread))
- && (nread != EOF)) /* bypass blank line */
- continue;
-
- if (nread != EOF) {
- if ((conf_type = ms_get_conf_type(line)) != CONF_NULL) {
- break;
- }
- continue;
- }
- end_of_file = 1;
- break;
- }
- break;
-
- default:
- assert(0);
- break;
- } /* switch */
- }
-
- fclose(f);
-
- if (line) {
- free(line);
- }
-} /* ms_parse_cfg_file */
-
-/* calculate the average size of key and value */
-static void ms_calc_avg_size() {
- double avg_val_size = 0.0;
- double avg_key_size = 0.0;
- double val_pro = 0.0;
- double key_pro = 0.0;
- double averge_len = 0.0;
- size_t start_len = 0;
- size_t end_len = 0;
-
- for (int j = 0; j < ms_setting.val_rng_cnt; j++) {
- val_pro = ms_setting.value_distr[j].value_prop;
- start_len = ms_setting.value_distr[j].start_len;
- end_len = ms_setting.value_distr[j].end_len;
-
- averge_len = val_pro * ((double) (start_len + end_len)) / 2;
- avg_val_size += averge_len;
- }
-
- for (int j = 0; j < ms_setting.key_rng_cnt; j++) {
- key_pro = ms_setting.key_distr[j].key_prop;
- start_len = ms_setting.key_distr[j].start_len;
- end_len = ms_setting.key_distr[j].end_len;
-
- averge_len = key_pro * ((double) (start_len + end_len)) / 2;
- avg_key_size += averge_len;
- }
-
- ms_setting.avg_val_size = (size_t) avg_val_size;
- ms_setting.avg_key_size = (size_t) avg_key_size;
-} /* ms_calc_avg_size */
-
-/**
- * used to shuffle key and value distribution array to ensure
- * (key, value) pair with different set.
- *
- * @param distr, pointer of distribution structure array
- * @param length, length of the array
- *
- * @return always return EXIT_SUCCESS
- */
-static int ms_shuffle_distr(ms_distr_t *distr, int length) {
- int i, j;
- int tmp_offset;
- size_t tmp_size;
- int64_t rnd;
-
- for (i = 0; i < length; i++) {
- rnd = random();
- j = (int) (rnd % (length - i)) + i;
-
- switch (rnd % 3) {
- case 0:
- tmp_size = distr[j].key_size;
- distr[j].key_size = distr[i].key_size;
- distr[i].key_size = tmp_size;
- break;
-
- case 1:
- tmp_offset = distr[j].key_offset;
- distr[j].key_offset = distr[i].key_offset;
- distr[i].key_offset = tmp_offset;
- break;
-
- case 2:
- tmp_size = distr[j].value_size;
- distr[j].value_size = distr[i].value_size;
- distr[i].value_size = tmp_size;
- break;
-
- default:
- break;
- } /* switch */
- }
-
- return EXIT_SUCCESS;
-} /* ms_shuffle_distr */
-
-/**
- * according to the key and value distribution, to build the
- * (key, value) pair distribution. the (key, value) pair
- * distribution array is global, each connection set or get
- * object keeping this distribution, for the final result, we
- * can reach the expected key and value distribution.
- */
-static void ms_build_distr() {
- int offset = 0;
- int end = 0;
- int key_cnt = 0;
- int value_cnt = 0;
- size_t average_len = 0;
- size_t diff_len = 0;
- size_t start_len = 0;
- size_t end_len = 0;
- int rnd = 0;
- ms_distr_t *distr = NULL;
- int units = (int) ms_setting.win_size / UNIT_ITEMS_COUNT;
-
- /* calculate average value size and key size */
- ms_calc_avg_size();
-
- ms_setting.char_blk_size = RAND_CHAR_SIZE;
- int key_scope_size =
- (int) ((ms_setting.char_blk_size - RESERVED_RAND_CHAR_SIZE) / UNIT_ITEMS_COUNT);
-
- ms_setting.distr = (ms_distr_t *) malloc(sizeof(ms_distr_t) * ms_setting.win_size);
- if (ms_setting.distr == NULL) {
- fprintf(stderr, "Can't allocate distribution array.");
- exit(1);
- }
-
- /**
- * character block is divided by how many different key
- * size, each different key size has the same size character
- * range.
- */
- for (int m = 0; m < units; m++) {
- for (int i = 0; i < UNIT_ITEMS_COUNT; i++) {
- ms_setting.distr[m * UNIT_ITEMS_COUNT + i].key_offset = ADDR_ALIGN(key_scope_size * i);
- }
- }
-
- /* initialize key size distribution */
- for (int m = 0; m < units; m++) {
- for (int j = 0; j < ms_setting.key_rng_cnt; j++) {
- key_cnt = (int) (UNIT_ITEMS_COUNT * ms_setting.key_distr[j].key_prop);
- start_len = ms_setting.key_distr[j].start_len;
- end_len = ms_setting.key_distr[j].end_len;
- if ((start_len < MIN_KEY_SIZE) || (end_len < MIN_KEY_SIZE)) {
- fprintf(stderr, "key length must be greater than 16 bytes.\n");
- exit(1);
- }
-
- if (!ms_setting.binary_prot_ && ((start_len > MAX_KEY_SIZE) || (end_len > MAX_KEY_SIZE))) {
- fprintf(stderr, "key length must be less than 250 bytes.\n");
- exit(1);
- }
-
- average_len = (start_len + end_len) / 2;
- diff_len = (end_len - start_len) / 2;
- for (int k = 0; k < key_cnt; k++) {
- if (offset >= (m + 1) * UNIT_ITEMS_COUNT) {
- break;
- }
- rnd = (int) random();
- if (k % 2 == 0) {
- ms_setting.distr[offset].key_size =
- (diff_len == 0) ? average_len : average_len + (size_t) rnd % diff_len;
- } else {
- ms_setting.distr[offset].key_size =
- (diff_len == 0) ? average_len : average_len - (size_t) rnd % diff_len;
- }
- offset++;
- }
- }
-
- if (offset < (m + 1) * UNIT_ITEMS_COUNT) {
- end = (m + 1) * UNIT_ITEMS_COUNT - offset;
- for (int i = 0; i < end; i++) {
- ms_setting.distr[offset].key_size = ms_setting.avg_key_size;
- offset++;
- }
- }
- }
- offset = 0;
-
- /* initialize value distribution */
- if (ms_setting.fixed_value_size) {
- for (int i = 0; i < units * UNIT_ITEMS_COUNT; i++) {
- ms_setting.distr[i].value_size = ms_setting.fixed_value_size;
- }
- } else {
- for (int m = 0; m < units; m++) {
- for (int j = 0; j < ms_setting.val_rng_cnt; j++) {
- value_cnt = (int) (UNIT_ITEMS_COUNT * ms_setting.value_distr[j].value_prop);
- start_len = ms_setting.value_distr[j].start_len;
- end_len = ms_setting.value_distr[j].end_len;
- if ((start_len <= 0) || (end_len <= 0)) {
- fprintf(stderr, "value length must be greater than 0 bytes.\n");
- exit(1);
- }
-
- if ((start_len > MAX_VALUE_SIZE) || (end_len > MAX_VALUE_SIZE)) {
- fprintf(stderr, "key length must be less than or equal to 1M.\n");
- exit(1);
- }
-
- average_len = (start_len + end_len) / 2;
- diff_len = (end_len - start_len) / 2;
- for (int k = 0; k < value_cnt; k++) {
- if (offset >= (m + 1) * UNIT_ITEMS_COUNT) {
- break;
- }
- rnd = (int) random();
- if (k % 2 == 0) {
- ms_setting.distr[offset].value_size =
- (diff_len == 0) ? average_len : average_len + (size_t) rnd % diff_len;
- } else {
- ms_setting.distr[offset].value_size =
- (diff_len == 0) ? average_len : average_len - (size_t) rnd % diff_len;
- }
- offset++;
- }
- }
-
- if (offset < (m + 1) * UNIT_ITEMS_COUNT) {
- end = (m + 1) * UNIT_ITEMS_COUNT - offset;
- for (int i = 0; i < end; i++) {
- ms_setting.distr[offset++].value_size = ms_setting.avg_val_size;
- }
- }
- }
- }
-
- /* shuffle distribution */
- for (int i = 0; i < units; i++) {
- distr = &ms_setting.distr[i * UNIT_ITEMS_COUNT];
- for (int j = 0; j < 4; j++) {
- ms_shuffle_distr(distr, UNIT_ITEMS_COUNT);
- }
- }
-} /* ms_build_distr */
-
-/**
- * used to initialize the global character block. The character
- * block is used to generate the suffix of the key and value. we
- * only store a pointer in the character block for each key
- * suffix or value string. It can save much memory to store key
- * or value string.
- */
-static void ms_init_random_block() {
- char *ptr = NULL;
-
- assert(ms_setting.char_blk_size > 0);
-
- ms_setting.char_block = (char *) malloc(ms_setting.char_blk_size);
- if (ms_setting.char_block == NULL) {
- fprintf(stderr, "Can't allocate global char block.");
- exit(1);
- }
- ptr = ms_setting.char_block;
-
- for (int i = 0; (size_t) i < ms_setting.char_blk_size; i++) {
- *(ptr++) = ALPHANUMBERICS[random() % CHAR_COUNT];
- }
-} /* ms_init_random_block */
-
-/**
- * after initialization, call this function to output the main
- * configuration user specified.
- */
-static void ms_print_setting() {
- fprintf(stdout, "servers: %s\n", ms_setting.srv_str);
- fprintf(stdout, "threads count: %d\n", ms_setting.nthreads);
- fprintf(stdout, "concurrency: %d\n", ms_setting.nconns);
- if (ms_setting.run_time > 0) {
- fprintf(stdout, "run time: %ds\n", ms_setting.run_time);
- } else {
- fprintf(stdout, "execute number: %" PRId64 "\n", ms_setting.exec_num);
- }
- fprintf(stdout, "windows size: %" PRId64 "k\n", (int64_t)(ms_setting.win_size / 1024));
- fprintf(stdout, "set proportion: set_prop=%.2f\n", ms_setting.cmd_distr[CMD_SET].cmd_prop);
- fprintf(stdout, "get proportion: get_prop=%.2f\n", ms_setting.cmd_distr[CMD_GET].cmd_prop);
- fflush(stdout);
-} /* ms_print_setting */
-
-/**
- * previous part of slap mode initialization of setting structure
- */
-static void ms_setting_slapmode_init_pre() {
- ms_setting.exec_num = DEFAULT_EXE_NUM;
- ms_setting.verify_percent = DEFAULT_VERIFY_RATE;
- ms_setting.exp_ver_per = DEFAULT_VERIFY_RATE;
- ms_setting.overwrite_percent = DEFAULT_OVERWRITE_RATE;
- ms_setting.mult_key_num = DEFAULT_DIV;
- ms_setting.fixed_value_size = 0;
- ms_setting.win_size = DEFAULT_WINDOW_SIZE;
- ms_setting.udp = false;
- ms_setting.reconnect = false;
- ms_setting.verbose = false;
- ms_setting.facebook_test = false;
- ms_setting.binary_prot_ = false;
- ms_setting.stat_freq = 0;
- ms_setting.srv_str = NULL;
- ms_setting.cfg_file = NULL;
- ms_setting.sock_per_conn = DEFAULT_SOCK_PER_CONN;
- ms_setting.expected_tps = 0;
- ms_setting.rep_write_srv = 0;
-} /* ms_setting_slapmode_init_pre */
-
-/**
- * previous part of initialization of setting structure
- */
-void ms_setting_init_pre() {
- memset(&ms_setting, 0, sizeof(ms_setting));
-
- /* common initialize */
- ms_setting.ncpu = ms_get_cpu_count();
- ms_setting.nthreads = DEFAULT_THREADS_NUM;
- ms_setting.nconns = DEFAULT_CONNS_NUM;
- ms_setting.run_time = DEFAULT_RUN_TIME;
- ms_setting.total_srv_cnt = MCD_SRVS_NUM_INIT;
- ms_setting.servers =
- (ms_mcd_server_t *) malloc((size_t) ms_setting.total_srv_cnt * sizeof(ms_mcd_server_t));
- if (ms_setting.servers == NULL) {
- fprintf(stderr, "Can't allocate servers structure.\n");
- exit(1);
- }
-
- ms_setting_slapmode_init_pre();
-} /* ms_setting_init_pre */
-
-/**
- * post part of slap mode initialization of setting structure
- */
-static void ms_setting_slapmode_init_post() {
- ms_setting.total_key_rng_cnt = KEY_RANGE_COUNT_INIT;
- ms_setting.key_distr =
- (ms_key_distr_t *) malloc((size_t) ms_setting.total_key_rng_cnt * sizeof(ms_key_distr_t));
-
- if (ms_setting.key_distr == NULL) {
- fprintf(stderr, "Can't allocate key distribution structure.\n");
- exit(1);
- }
-
- ms_setting.total_val_rng_cnt = VALUE_RANGE_COUNT_INIT;
-
- ms_setting.value_distr =
- (ms_value_distr_t *) malloc((size_t) ms_setting.total_val_rng_cnt * sizeof(ms_value_distr_t));
-
- if (ms_setting.value_distr == NULL) {
- fprintf(stderr, "Can't allocate value distribution structure.\n");
- exit(1);
- }
-
- ms_parse_cfg_file(ms_setting.cfg_file);
-
- /* run time mode */
- if ((ms_setting.exec_num == 0) && (ms_setting.run_time)) {
- ms_setting.exec_num = (int64_t) MAX_EXEC_NUM;
- } else {
- /* execute number mode */
- ms_setting.run_time = 0;
- }
-
- if (ms_setting.rep_write_srv > 0) {
- /* for replication test, need enable reconnect feature */
- ms_setting.reconnect = true;
- }
-
- if (ms_setting.facebook_test && (ms_setting.mult_key_num < 2)) {
- fprintf(stderr,
- "facebook test must work with multi-get, "
- "please specify multi-get key number "
- "with '--division' option.\n");
- exit(1);
- }
-
- if (ms_setting.facebook_test && ms_setting.udp) {
- fprintf(stderr, "facebook test couldn't work with UDP.\n");
- exit(1);
- }
-
- if (ms_setting.udp && (ms_setting.sock_per_conn > 1)) {
- fprintf(stderr,
- "UDP doesn't support multi-socks "
- "in one connection structure.\n");
- exit(1);
- }
-
- if ((ms_setting.rep_write_srv > 0) && (ms_setting.srv_cnt < 2)) {
- fprintf(stderr, "Please specify 2 servers at least for replication\n");
- exit(1);
- }
-
- if ((ms_setting.rep_write_srv > 0) && (ms_setting.srv_cnt < ms_setting.rep_write_srv)) {
- fprintf(stderr,
- "Servers to do replication writing "
- "is larger than the total servers\n");
- exit(1);
- }
-
- if (ms_setting.udp && (ms_setting.rep_write_srv > 0)) {
- fprintf(stderr, "UDP doesn't support replication.\n");
- exit(1);
- }
-
- if (ms_setting.facebook_test && (ms_setting.rep_write_srv > 0)) {
- fprintf(stderr, "facebook test couldn't work with replication.\n");
- exit(1);
- }
-
- ms_build_distr();
-
- /* initialize global character block */
- ms_init_random_block();
- ms_print_setting();
-} /* ms_setting_slapmode_init_post */
-
-/**
- * post part of initialization of setting structure
- */
-void ms_setting_init_post() {
- ms_get_serverlist(ms_setting.srv_str);
- ms_setting_slapmode_init_post();
-}
-
-/**
- * clean up the global setting structure
- */
-void ms_setting_cleanup() {
- if (ms_setting.distr) {
- free(ms_setting.distr);
- }
-
- if (ms_setting.char_block) {
- free(ms_setting.char_block);
- }
-
- if (ms_setting.srv_str) {
- free(ms_setting.srv_str);
- }
-
- if (ms_setting.cfg_file) {
- free(ms_setting.cfg_file);
- }
-
- if (ms_setting.servers) {
- free(ms_setting.servers);
- }
-
- if (ms_setting.key_distr) {
- free(ms_setting.key_distr);
- }
-
- if (ms_setting.value_distr) {
- free(ms_setting.value_distr);
- }
-} /* ms_setting_cleanup */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_SETTING_H
-#define MS_SETTING_H
-
-#include "ms_memslap.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MCD_SRVS_NUM_INIT 8
-#define MCD_HOST_LENGTH 64
-#define KEY_RANGE_COUNT_INIT 8
-#define VALUE_RANGE_COUNT_INIT 8
-#define PROP_ERROR 0.001
-
-#define MIN_KEY_SIZE 16
-#define MAX_KEY_SIZE 250
-#define MAX_VALUE_SIZE (1024 * 1024)
-
-/* the content of the configuration file for memslap running without configuration file */
-#define DEFAULT_CONGIF_STR \
- "key\n" \
- "64 64 1\n" \
- "value\n" \
- "1024 1024 1\n" \
- "cmd\n" \
- "0 0.1\n" \
- "1 0.9"
-
-/* Used to parse the value length return by server and path string */
-typedef struct token_s {
- char *value;
- size_t length;
-} token_t;
-
-#define MAX_TOKENS 10
-
-/* server information */
-typedef struct mcd_server {
- char srv_host_name[MCD_HOST_LENGTH]; /* host name of server */
- int srv_port; /* server port */
-
- /* for calculating how long the server disconnects */
- ATOMIC uint32_t disconn_cnt; /* number of disconnections count */
- ATOMIC uint32_t reconn_cnt; /* number of reconnections count */
- struct timeval disconn_time; /* start time of disconnection */
- struct timeval reconn_time; /* end time of reconnection */
-} ms_mcd_server_t;
-
-/* information of an item distribution including key and value */
-typedef struct distr {
- size_t key_size; /* size of key */
- int key_offset; /* offset of one key in character block */
- size_t value_size; /* size of value */
-} ms_distr_t;
-
-/* information of key distribution */
-typedef struct key_distr {
- size_t start_len; /* start of the key length range */
- size_t end_len; /* end of the key length range */
- double key_prop; /* key proportion */
-} ms_key_distr_t;
-
-/* information of value distribution */
-typedef struct value_distr {
- size_t start_len; /* start of the value length range */
- size_t end_len; /* end of the value length range */
- double value_prop; /* value proportion */
-} ms_value_distr_t;
-
-/* memcached command types */
-typedef enum cmd_type { CMD_SET, CMD_GET, CMD_NULL } ms_cmd_type_t;
-
-/* types in the configuration file */
-typedef enum conf_type { CONF_KEY, CONF_VALUE, CONF_CMD, CONF_NULL } ms_conf_type_t;
-
-/* information of command distribution */
-typedef struct cmd_distr {
- ms_cmd_type_t cmd_type; /* command type */
- double cmd_prop; /* proportion of the command */
-} ms_cmd_distr_t;
-
-/* global setting structure */
-typedef struct setting {
- uint32_t ncpu; /* cpu count of this system */
- uint32_t nthreads; /* total thread count, must equal or less than cpu cores */
- uint32_t nconns; /* total conn count, must multiply by total thread count */
- int64_t exec_num; /* total execute number */
- int run_time; /* total run time */
-
- uint32_t char_blk_size; /* global character block size */
- char *char_block; /* global character block with random character */
- ms_distr_t *distr; /* distribution from configure file */
-
- char *srv_str; /* string includes servers information */
- char *cfg_file; /* configure file name */
-
- ms_mcd_server_t *servers; /* servers array */
- uint32_t total_srv_cnt; /* total servers count of the servers array */
- uint32_t srv_cnt; /* servers count */
-
- ms_key_distr_t *key_distr; /* array of key distribution */
- int total_key_rng_cnt; /* total key range count of the array */
- int key_rng_cnt; /* actual key range count */
-
- ms_value_distr_t *value_distr; /* array of value distribution */
- int total_val_rng_cnt; /* total value range count of the array */
- int val_rng_cnt; /* actual value range count */
-
- ms_cmd_distr_t cmd_distr[CMD_NULL]; /* total we have CMD_NULL commands */
- int cmd_used_count; /* supported command count */
-
- size_t fixed_value_size; /* fixed value size */
- size_t avg_val_size; /* average value size */
- size_t avg_key_size; /* average value size */
-
- double verify_percent; /* percent of data verification */
- double exp_ver_per; /* percent of data verification with expire time */
- double overwrite_percent; /* percent of overwrite */
- int mult_key_num; /* number of keys used by multi-get once */
- size_t win_size; /* item window size per connection */
- bool udp; /* whether or not use UDP */
- int stat_freq; /* statistic frequency second */
- bool reconnect; /* whether it reconnect when connection close */
- bool verbose; /* whether it outputs detailed information when verification */
- bool facebook_test; /* facebook test, TCP set and multi-get with UDP */
- uint32_t sock_per_conn; /* number of socks per connection structure */
- bool binary_prot_; /* whether it use binary protocol */
- int expected_tps; /* expected throughput */
- uint32_t rep_write_srv; /* which servers are used to do replication writing */
-} ms_setting_st;
-
-extern ms_setting_st ms_setting;
-
-/* previous part of initialization of setting structure */
-void ms_setting_init_pre(void);
-
-/* post part of initialization of setting structure */
-void ms_setting_init_post(void);
-
-/* clean up the global setting structure */
-void ms_setting_cleanup(void);
-
-#define UNUSED_ARGUMENT(x) (void) x
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_SETTING_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#include <memory.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <signal.h>
-#include <pthread.h>
-
-#include "ms_memslap.h"
-#include "ms_setting.h"
-
-/* prototypes */
-int ms_setup_sigsegv(void);
-int ms_setup_sigpipe(void);
-int ms_setup_sigint(void);
-
-/* signal seg reaches, this function will run */
-static void ms_signal_segv(int signum, siginfo_t *info, void *ptr) {
- UNUSED_ARGUMENT(signum);
- UNUSED_ARGUMENT(info);
- UNUSED_ARGUMENT(ptr);
-
- pthread_mutex_lock(&ms_global.quit_mutex);
- fprintf(stderr, "Segmentation fault occurred.\nStack trace:\n");
-#if 0
- pandora_print_callstack(stderr);
-#endif
- fprintf(stderr, "End of stack trace\n");
- pthread_mutex_unlock(&ms_global.quit_mutex);
- abort();
-}
-
-/* signal int reaches, this function will run */
-static void ms_signal_int(int signum, siginfo_t *info, void *ptr) {
- UNUSED_ARGUMENT(signum);
- UNUSED_ARGUMENT(info);
- UNUSED_ARGUMENT(ptr);
-
- pthread_mutex_lock(&ms_global.quit_mutex);
- fprintf(stderr, "SIGINT handled.\n");
- pthread_mutex_unlock(&ms_global.quit_mutex);
- exit(1);
-} /* ms_signal_int */
-
-/**
- * redirect signal seg
- *
- * @return if success, return EXIT_SUCCESS, else return -1
- */
-int ms_setup_sigsegv(void) {
- struct sigaction action;
-
- memset(&action, 0, sizeof(action));
- action.sa_sigaction = ms_signal_segv;
- action.sa_flags = SA_SIGINFO;
- if (sigaction(SIGSEGV, &action, NULL) < 0) {
- perror("sigaction");
- return EXIT_SUCCESS;
- }
-
- return -1;
-} /* ms_setup_sigsegv */
-
-/**
- * redirect signal pipe
- *
- * @return if success, return EXIT_SUCCESS, else return -1
- */
-int ms_setup_sigpipe(void) {
- /* ignore the SIGPIPE signal */
- signal(SIGPIPE, SIG_IGN);
-
- return -1;
-} /* ms_setup_sigpipe */
-
-/**
- * redirect signal int
- *
- * @return if success, return EXIT_SUCCESS, else return -1
- */
-int ms_setup_sigint(void) {
- struct sigaction action_3;
-
- memset(&action_3, 0, sizeof(action_3));
- action_3.sa_sigaction = ms_signal_int;
- action_3.sa_flags = SA_SIGINFO;
- if (sigaction(SIGINT, &action_3, NULL) < 0) {
- perror("sigaction");
- return EXIT_SUCCESS;
- }
-
- return -1;
-} /* ms_setup_sigint */
-
-#ifndef SIGSEGV_NO_AUTO_INIT
-static void __attribute((constructor)) ms_init(void) {
- ms_setup_sigsegv();
- ms_setup_sigpipe();
- ms_setup_sigint();
-}
-#endif
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_SIGSEGV_H
-#define MS_SIGSEGV_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* redirect signal seg */
-int ms_setup_sigsegv(void);
-
-/* redirect signal pipe */
-int ms_setup_sigpipe(void);
-
-/* redirect signal int */
-int ms_setup_sigint(void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_SIGSEGV_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#include <inttypes.h>
-#include "ms_stats.h"
-
-#define array_size(x) (sizeof(x) / sizeof((x)[0]))
-
-static int ms_local_log2(uint64_t value);
-static uint64_t ms_get_events(ms_stat_t *stat);
-
-/**
- * get the index of local log2 array
- *
- * @param value
- *
- * @return return the index of local log2 array
- */
-static int ms_local_log2(uint64_t value) {
- int result = 0;
-
- while (result <= 63 && ((uint64_t) 1 << result) < value) {
- result++;
- }
-
- return result;
-} /* ms_local_log2 */
-
-/**
- * initialize statistic structure
- *
- * @param stat, pointer of the statistic structure
- * @param name, name of the statistic
- */
-void ms_init_stats(ms_stat_t *stat, const char *name) {
- memset(stat, 0, sizeof(*stat));
-
- stat->name = (char *) name;
- stat->min_time = (uint64_t) -1;
- stat->max_time = 0;
- stat->period_min_time = (uint64_t) -1;
- stat->period_max_time = 0;
- stat->log_product = 0;
- stat->total_time = 0;
- stat->pre_total_time = 0;
- stat->squares = 0;
- stat->pre_squares = 0;
- stat->pre_events = 0;
- stat->pre_log_product = 0;
- stat->get_miss = 0;
- stat->pre_get_miss = 0;
-} /* ms_init_stats */
-
-/**
- * record one event
- *
- * @param stat, pointer of the statistic structure
- * @param total_time, response time of the command
- * @param get_miss, whether it gets miss
- */
-void ms_record_event(ms_stat_t *stat, uint64_t total_time, int get_miss) {
- stat->total_time += total_time;
-
- if (total_time < stat->min_time) {
- stat->min_time = total_time;
- }
-
- if (total_time > stat->max_time) {
- stat->max_time = total_time;
- }
-
- if (total_time < stat->period_min_time) {
- stat->period_min_time = total_time;
- }
-
- if (total_time > stat->period_max_time) {
- stat->period_max_time = total_time;
- }
-
- if (get_miss) {
- stat->get_miss++;
- }
-
- stat->dist[ms_local_log2(total_time)]++;
- stat->squares += (double) (total_time * total_time);
-
- if (total_time) {
- stat->log_product += log((double) total_time);
- }
-} /* ms_record_event */
-
-/**
- * get the events count
- *
- * @param stat, pointer of the statistic structure
- *
- * @return total events recorded
- */
-static uint64_t ms_get_events(ms_stat_t *stat) {
- uint64_t events = 0;
-
- for (uint32_t i = 0; i < array_size(stat->dist); i++) {
- events += stat->dist[i];
- }
-
- return events;
-} /* ms_get_events */
-
-/**
- * dump the statistics
- *
- * @param stat, pointer of the statistic structure
- */
-void ms_dump_stats(ms_stat_t *stat) {
- uint64_t events = 0;
- int max_non_zero = 0;
- int min_non_zero = 0;
- double average = 0;
-
- for (uint32_t i = 0; i < array_size(stat->dist); i++) {
- events += stat->dist[i];
- if (stat->dist[i]) {
- max_non_zero = (int) i;
- }
- }
-
- if (events == 0) {
- return;
- }
- average = (double) (stat->total_time / events);
-
- printf("%s Statistics (%lld events)\n", stat->name, (long long) events);
- printf(" Min: %8lld\n", (long long) stat->min_time);
- printf(" Max: %8lld\n", (long long) stat->max_time);
- printf(" Avg: %8lld\n", (long long) (stat->total_time / events));
- printf(" Geo: %8.2lf\n", exp(stat->log_product / (double) events));
-
- if (events > 1) {
- printf(" Std: %8.2lf\n",
- sqrt((stat->squares - (double) events * average * average) / ((double) events - 1)));
- }
- printf(" Log2 Dist:");
-
- for (int i = 0; i <= max_non_zero - 4; i += 4) {
- if ((stat->dist[i + 0]) || (stat->dist[i + 1]) || (stat->dist[i + 2])
- || (stat->dist[i + 3]))
- {
- min_non_zero = i;
- break;
- }
- }
-
- for (int i = min_non_zero; i <= max_non_zero; i++) {
- if ((i % 4) == 0) {
- printf("\n %2d:", (int) i);
- }
- printf(" %6" PRIu64, stat->dist[i]);
- }
-
- printf("\n\n");
-} /* ms_dump_stats */
-
-/**
- * dump the format statistics
- *
- * @param stat, pointer of the statistic structure
- * @param run_time, the total run time
- * @param freq, statistic frequency
- * @param obj_size, average object size
- */
-void ms_dump_format_stats(ms_stat_t *stat, int run_time, int freq, int obj_size) {
- uint64_t events = 0;
- double global_average = 0;
- uint64_t global_tps = 0;
- double global_rate = 0;
- double global_std = 0;
- double global_log = 0;
-
- double period_average = 0;
- uint64_t period_tps = 0;
- double period_rate = 0;
- double period_std = 0;
- double period_log = 0;
-
- if ((events = ms_get_events(stat)) == 0) {
- return;
- }
-
- global_average = (double) (stat->total_time / events);
- global_tps = events / (uint64_t) run_time;
- global_rate = (double) events * obj_size / 1024 / 1024 / run_time;
- global_std = sqrt((stat->squares - (double) events * global_average * global_average)
- / (double) (events - 1));
- global_log = exp(stat->log_product / (double) events);
-
- uint64_t diff_time = stat->total_time - stat->pre_total_time;
- uint64_t diff_events = events - stat->pre_events;
- if (diff_events >= 1) {
- period_average = (double) (diff_time / diff_events);
- period_tps = diff_events / (uint64_t) freq;
- period_rate = (double) diff_events * obj_size / 1024 / 1024 / freq;
- double diff_squares = (double) stat->squares - (double) stat->pre_squares;
- period_std = sqrt((diff_squares - (double) diff_events * period_average * period_average)
- / (double) (diff_events - 1));
- double diff_log_product = stat->log_product - stat->pre_log_product;
- period_log = exp(diff_log_product / (double) diff_events);
- }
-
- printf("%s Statistics\n", stat->name);
- printf("%-8s %-8s %-12s %-12s %-10s %-10s %-8s %-10s %-10s %-10s %-10s\n", "Type", "Time(s)",
- "Ops", "TPS(ops/s)", "Net(M/s)", "Get_miss", "Min(us)", "Max(us)", "Avg(us)", "Std_dev",
- "Geo_dist");
-
- printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n",
- "Period", freq, (long long) diff_events, (long long) period_tps, global_rate,
- (long long) (stat->get_miss - stat->pre_get_miss), (long long) stat->period_min_time,
- (long long) stat->period_max_time, (long long) period_average, period_std, period_log);
-
- printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n\n",
- "Global", run_time, (long long) events, (long long) global_tps, period_rate,
- (long long) stat->get_miss, (long long) stat->min_time, (long long) stat->max_time,
- (long long) global_average, global_std, global_log);
-
- stat->pre_events = events;
- stat->pre_squares = (uint64_t) stat->squares;
- stat->pre_total_time = stat->total_time;
- stat->pre_log_product = stat->log_product;
- stat->period_min_time = (uint64_t) -1;
- stat->period_max_time = 0;
- stat->pre_get_miss = stat->get_miss;
-} /* ms_dump_format_stats */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_STAT_H
-#define MS_STAT_H
-
-#include <math.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* statistic structure of response time */
-typedef struct {
- char *name;
- uint64_t total_time;
- uint64_t min_time;
- uint64_t max_time;
- uint64_t get_miss;
- uint64_t dist[65];
- double squares;
- double log_product;
-
- uint64_t period_min_time;
- uint64_t period_max_time;
- uint64_t pre_get_miss;
- uint64_t pre_events;
- uint64_t pre_total_time;
- uint64_t pre_squares;
- double pre_log_product;
-} ms_stat_t;
-
-/* initialize statistic */
-void ms_init_stats(ms_stat_t *stat, const char *name);
-
-/* record one event */
-void ms_record_event(ms_stat_t *stat, uint64_t time, int get_miss);
-
-/* dump the statistics */
-void ms_dump_stats(ms_stat_t *stat);
-
-/* dump the format statistics */
-void ms_dump_format_stats(ms_stat_t *stat, int run_time, int freq, int obj_size);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* MS_STAT_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#if defined(HAVE_SYS_TIME_H)
-# include <sys/time.h>
-#endif
-
-#if defined(HAVE_TIME_H)
-# include <time.h>
-#endif
-
-#include "ms_thread.h"
-#include "ms_setting.h"
-#include "ms_atomic.h"
-
-/* command distribution adjustment cycle */
-#define CMD_DISTR_ADJUST_CYCLE 1000
-#define DISADJUST_FACTOR \
- 0.03 /** \
- * In one adjustment cycle, if undo set or get \
- * operations proportion is more than 3% , means \
- * there are too many new item or need more new \
- * item in the window. This factor shows it. \
- */
-
-/* get item from task window */
-static ms_task_item_t *ms_get_cur_opt_item(ms_conn_t *c);
-static ms_task_item_t *ms_get_next_get_item(ms_conn_t *c);
-static ms_task_item_t *ms_get_next_set_item(ms_conn_t *c);
-static ms_task_item_t *ms_get_random_overwrite_item(ms_conn_t *c);
-
-/* select next operation to do */
-static void ms_select_opt(ms_conn_t *c, ms_task_t *task);
-
-/* set and get speed estimate for controlling and adjustment */
-static bool ms_is_set_too_fast(ms_task_t *task);
-static bool ms_is_get_too_fast(ms_task_t *task);
-static void ms_kick_out_item(ms_task_item_t *item);
-
-/* miss rate adjustment */
-static bool ms_need_overwrite_item(ms_task_t *task);
-static bool ms_adjust_opt(ms_conn_t *c, ms_task_t *task);
-
-/* deal with data verification initialization */
-static void ms_task_data_verify_init(ms_task_t *task);
-static void ms_task_expire_verify_init(ms_task_t *task);
-
-/* select a new task to do */
-static ms_task_t *ms_get_task(ms_conn_t *c, bool warmup);
-
-/* run the selected task */
-static void ms_update_set_result(ms_conn_t *c, ms_task_item_t *item);
-static void ms_update_stat_result(ms_conn_t *c);
-static void ms_update_multi_get_result(ms_conn_t *c);
-static void ms_update_single_get_result(ms_conn_t *c, ms_task_item_t *item);
-static void ms_update_task_result(ms_conn_t *c);
-static void ms_single_getset_task_sch(ms_conn_t *c);
-static void ms_multi_getset_task_sch(ms_conn_t *c);
-static void ms_send_signal(ms_sync_lock_t *sync_lock);
-static void ms_warmup_server(ms_conn_t *c);
-static int ms_run_getset_task(ms_conn_t *c);
-
-/**
- * used to get the current operation item(object)
- *
- * @param c, pointer of the concurrency
- *
- * @return ms_task_item_t*, current operating item
- */
-static ms_task_item_t *ms_get_cur_opt_item(ms_conn_t *c) {
- return c->curr_task.item;
-}
-
-/**
- * used to get the next item to do get operation
- *
- * @param c, pointer of the concurrency
- *
- * @return ms_task_item_t*, the pointer of the next item to do
- * get operation
- */
-static ms_task_item_t *ms_get_next_get_item(ms_conn_t *c) {
- ms_task_item_t *item = NULL;
-
- if (c->set_cursor <= 0) {
- /* the first item in the window */
- item = &c->item_win[0];
- } else if (c->set_cursor > 0 && c->set_cursor < (uint32_t) c->win_size) {
- /* random get one item set before */
- item = &c->item_win[random() % (int64_t) c->set_cursor];
- } else {
- /* random get one item from the window */
- item = &c->item_win[random() % c->win_size];
- }
-
- return item;
-} /* ms_get_next_get_item */
-
-/**
- * used to get the next item to do set operation
- *
- * @param c, pointer of the concurrency
- *
- * @return ms_task_item_t*, the pointer of the next item to do
- * set operation
- */
-static ms_task_item_t *ms_get_next_set_item(ms_conn_t *c) {
- /**
- * when a set command successes, the cursor will plus 1. If set
- * fails, the cursor doesn't change. it isn't necessary to
- * increase the cursor here.
- */
- return &c->item_win[(int64_t) c->set_cursor % c->win_size];
-}
-
-/**
- * If we need do overwrite, we could select a item set before.
- * This function is used to get a item set before to do
- * overwrite.
- *
- * @param c, pointer of the concurrency
- *
- * @return ms_task_item_t*, the pointer of the previous item of
- * set operation
- */
-static ms_task_item_t *ms_get_random_overwrite_item(ms_conn_t *c) {
- return ms_get_next_get_item(c);
-} /* ms_get_random_overwrite_item */
-
-/**
- * According to the proportion of operations(get or set), select
- * an operation to do.
- *
- * @param c, pointer of the concurrency
- * @param task, pointer of current task in the concurrency
- */
-static void ms_select_opt(ms_conn_t *c, ms_task_t *task) {
- double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
- double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
-
- /* update cycle operation number if necessary */
- if ((task->cycle_undo_get == 0) || (task->cycle_undo_set == 0)) {
- task->cycle_undo_get += (int) (CMD_DISTR_ADJUST_CYCLE * get_prop);
- task->cycle_undo_set += (int) (CMD_DISTR_ADJUST_CYCLE * set_prop);
- }
-
- /**
- * According to operation distribution to choose doing which
- * operation. If it can't set new object to sever, just change
- * to do get operation.
- */
- if ((set_prop > PROP_ERROR)
- && ((double) task->get_opt * set_prop >= (double) task->set_opt * get_prop))
- {
- task->cmd = CMD_SET;
- task->item = ms_get_next_set_item(c);
- } else {
- task->cmd = CMD_GET;
- task->item = ms_get_next_get_item(c);
- }
-} /* ms_select_opt */
-
-/**
- * used to judge whether the number of get operations done is
- * more than expected number of get operations to do right now.
- *
- * @param task, pointer of current task in the concurrency
- *
- * @return bool, if get too fast, return true, else return false
- */
-static bool ms_is_get_too_fast(ms_task_t *task) {
- double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
- double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
-
- /* no get operation */
- if (get_prop < PROP_ERROR) {
- return false;
- }
-
- int max_undo_set = (int) (set_prop / get_prop * (1.0 + DISADJUST_FACTOR)) * task->cycle_undo_get;
-
- if (((double) task->get_opt * set_prop > (double) task->set_opt * get_prop)
- && (task->cycle_undo_set > max_undo_set))
- {
- return true;
- }
-
- return false;
-} /* ms_is_get_too_fast */
-
-/**
- * used to judge whether the number of set operations done is
- * more than expected number of set operations to do right now.
- *
- * @param task, pointer of current task in the concurrency
- *
- * @return bool, if set too fast, return true, else return false
- */
-static bool ms_is_set_too_fast(ms_task_t *task) {
- double get_prop = ms_setting.cmd_distr[CMD_GET].cmd_prop;
- double set_prop = ms_setting.cmd_distr[CMD_SET].cmd_prop;
-
- /* no set operation */
- if (set_prop < PROP_ERROR) {
- return false;
- }
-
- /* If it does set operation too fast, skip some */
- int max_undo_get =
- (int) ((get_prop / set_prop * (1.0 + DISADJUST_FACTOR)) * (double) task->cycle_undo_set);
-
- if (((double) task->get_opt * set_prop < (double) task->set_opt * get_prop)
- && (task->cycle_undo_get > max_undo_get))
- {
- return true;
- }
-
- return false;
-} /* ms_is_set_too_fast */
-
-/**
- * kick out the old item in the window, and add a new item to
- * overwrite the old item. When we don't want to do overwrite
- * object, and the current item to do set operation is an old
- * item, we could kick out the old item and add a new item. Then
- * we can ensure we set new object every time.
- *
- * @param item, pointer of task item which includes the object
- * information
- */
-static void ms_kick_out_item(ms_task_item_t *item) {
- /* allocate a new item */
- item->key_prefix = ms_get_key_prefix();
-
- item->key_suffix_offset++;
- item->value_offset = INVALID_OFFSET; /* new item use invalid value offset */
- item->client_time = 0;
-} /* ms_kick_out_item */
-
-/**
- * used to judge whether we need overwrite object based on the
- * options user specified
- *
- * @param task, pointer of current task in the concurrency
- *
- * @return bool, if need overwrite, return true, else return
- * false
- */
-static bool ms_need_overwrite_item(ms_task_t *task) {
- ms_task_item_t *item = task->item;
-
- assert(item);
- assert(task->cmd == CMD_SET);
-
- /**
- * according to data overwrite percent to determine if do data
- * overwrite.
- */
- if (task->overwrite_set < (double) task->set_opt * ms_setting.overwrite_percent) {
- return true;
- }
-
- return false;
-} /* ms_need_overwirte_item */
-
-/**
- * used to adjust operation. the function must be called after
- * select operation. the function change get operation to set
- * operation, or set operation to get operation based on the
- * current case.
- *
- * @param c, pointer of the concurrency
- * @param task, pointer of current task in the concurrency
- *
- * @return bool, if success, return true, else return false
- */
-static bool ms_adjust_opt(ms_conn_t *c, ms_task_t *task) {
- ms_task_item_t *item = task->item;
-
- assert(item);
-
- if (task->cmd == CMD_SET) {
- /* If did set operation too fast, skip some */
- if (ms_is_set_too_fast(task)) {
- /* get the item instead */
- if (item->value_offset != INVALID_OFFSET) {
- task->cmd = CMD_GET;
- return true;
- }
- }
-
- /* If the current item is not a new item, kick it out */
- if (item->value_offset != INVALID_OFFSET) {
- if (ms_need_overwrite_item(task)) {
- /* overwrite */
- task->overwrite_set++;
- } else {
- /* kick out the current item to do set operation */
- ms_kick_out_item(item);
- }
- } else /* it's a new item */ {
- /* need overwrite */
- if (ms_need_overwrite_item(task)) {
- /**
- * overwrite not use the item with current set cursor, revert
- * set cursor.
- */
- c->set_cursor--;
-
- item = ms_get_random_overwrite_item(c);
- if (item->value_offset != INVALID_OFFSET) {
- task->item = item;
- task->overwrite_set++;
- } else /* item is a new item */ {
- /* select the item to run, and cancel overwrite */
- task->item = item;
- }
- }
- }
- task->cmd = CMD_SET;
- return true;
- } else {
- if (item->value_offset == INVALID_OFFSET) {
- task->cmd = CMD_SET;
- return true;
- }
-
- /**
- * If It does get operation too fast, it will change the
- * operation to set.
- */
- if (ms_is_get_too_fast(task)) {
- /* don't kick out the first item in the window */
- if (!ms_is_set_too_fast(task)) {
- ms_kick_out_item(item);
- task->cmd = CMD_SET;
- return true;
- } else {
- return false;
- }
- }
-
- assert(item->value_offset != INVALID_OFFSET);
-
- task->cmd = CMD_GET;
- return true;
- }
-} /* ms_adjust_opt */
-
-/**
- * used to initialize the task which need verify data.
- *
- * @param task, pointer of current task in the concurrency
- */
-static void ms_task_data_verify_init(ms_task_t *task) {
- ms_task_item_t *item = task->item;
-
- assert(item);
- assert(task->cmd == CMD_GET);
-
- /**
- * according to data verification percent to determine if do
- * data verification.
- */
- if (task->verified_get < (double) task->get_opt * ms_setting.verify_percent) {
- /**
- * currently it doesn't do verify, just increase the counter,
- * and do verification next proper get command
- */
- if ((task->item->value_offset != INVALID_OFFSET) && (item->exp_time == 0)) {
- task->verify = true;
- task->finish_verify = false;
- task->verified_get++;
- }
- }
-} /* ms_task_data_verify_init */
-
-/**
- * used to initialize the task which need verify expire time.
- *
- * @param task, pointer of current task in the concurrency
- */
-static void ms_task_expire_verify_init(ms_task_t *task) {
- ms_task_item_t *item = task->item;
-
- assert(item);
- assert(task->cmd == CMD_GET);
- assert(item->exp_time > 0);
-
- task->verify = true;
- task->finish_verify = false;
-} /* ms_task_expire_verify_init */
-
-/**
- * used to get one task, the function initializes the task
- * structure.
- *
- * @param c, pointer of the concurrency
- * @param warmup, whether it need warmup
- *
- * @return ms_task_t*, pointer of current task in the
- * concurrency
- */
-static ms_task_t *ms_get_task(ms_conn_t *c, bool warmup) {
- ms_task_t *task = &c->curr_task;
-
- while (1) {
- task->verify = false;
- task->finish_verify = true;
- task->get_miss = true;
-
- if (warmup) {
- task->cmd = CMD_SET;
- task->item = ms_get_next_set_item(c);
-
- return task;
- }
-
- /* according to operation distribution to choose doing which operation */
- ms_select_opt(c, task);
-
- if (!ms_adjust_opt(c, task)) {
- continue;
- }
-
- if ((ms_setting.verify_percent > 0) && (task->cmd == CMD_GET)) {
- ms_task_data_verify_init(task);
- }
-
- if ((ms_setting.exp_ver_per > 0) && (task->cmd == CMD_GET) && (task->item->exp_time > 0)) {
- ms_task_expire_verify_init(task);
- }
-
- break;
- }
-
- /**
- * Only update get and delete counter, set counter will be
- * updated after set operation successes.
- */
- if (task->cmd == CMD_GET) {
- task->get_opt++;
- task->cycle_undo_get--;
- }
-
- return task;
-} /* ms_get_task */
-
-/**
- * send a signal to the main monitor thread
- *
- * @param sync_lock, pointer of the lock
- */
-static void ms_send_signal(ms_sync_lock_t *sync_lock) {
- pthread_mutex_lock(&sync_lock->lock);
- sync_lock->count++;
- pthread_cond_signal(&sync_lock->cond);
- pthread_mutex_unlock(&sync_lock->lock);
-} /* ms_send_signal */
-
-/**
- * If user only want to do get operation, but there is no object
- * in server , so we use this function to warmup the server, and
- * set some objects to server. It runs at the beginning of task.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_warmup_server(ms_conn_t *c) {
- ms_task_t *task;
- ms_task_item_t *item;
-
- /**
- * Extra one loop to get the last command returned state.
- * Normally it gets the previous command returned state.
- */
- if ((c->remain_warmup_num >= 0) && (c->remain_warmup_num != c->warmup_num)) {
- item = ms_get_cur_opt_item(c);
- /* only update the set command result state for data verification */
- if ((c->precmd.cmd == CMD_SET) && (c->precmd.retstat == MCD_STORED)) {
- item->value_offset = item->key_suffix_offset;
- /* set success, update counter */
- c->set_cursor++;
- } else if (c->precmd.cmd == CMD_SET && c->precmd.retstat != MCD_STORED) {
- printf("key: %" PRIx64 " didn't set success\n", item->key_prefix);
- }
- }
-
- /* the last time don't run a task */
- if (c->remain_warmup_num-- > 0) {
- /* operate next task item */
- task = ms_get_task(c, true);
- item = task->item;
- ms_mcd_set(c, item);
- }
-
- /**
- * finish warming up server, wait all connects initialize
- * complete. Then all connects can start do task at the same
- * time.
- */
- if (c->remain_warmup_num == -1) {
- ms_send_signal(&ms_global.warmup_lock);
- c->remain_warmup_num--; /* never run the if branch */
- }
-} /* ms_warmup_server */
-
-/**
- * dispatch single get and set task
- *
- * @param c, pointer of the concurrency
- */
-static void ms_single_getset_task_sch(ms_conn_t *c) {
- ms_task_t *task;
- ms_task_item_t *item;
-
- /* the last time don't run a task */
- if (c->remain_exec_num-- > 0) {
- task = ms_get_task(c, false);
- item = task->item;
- if (task->cmd == CMD_SET) {
- ms_mcd_set(c, item);
- } else if (task->cmd == CMD_GET) {
- assert(task->cmd == CMD_GET);
- ms_mcd_get(c, item);
- }
- }
-} /* ms_single_getset_task_sch */
-
-/**
- * dispatch multi-get and set task
- *
- * @param c, pointer of the concurrency
- */
-static void ms_multi_getset_task_sch(ms_conn_t *c) {
- ms_task_t *task;
- ms_mlget_task_item_t *mlget_item;
-
- while (1) {
- if (c->remain_exec_num-- > 0) {
- task = ms_get_task(c, false);
- if (task->cmd == CMD_SET) /* just do it */ {
- ms_mcd_set(c, task->item);
- break;
- } else {
- assert(task->cmd == CMD_GET);
- mlget_item = &c->mlget_task.mlget_item[c->mlget_task.mlget_num];
- mlget_item->item = task->item;
- mlget_item->verify = task->verify;
- mlget_item->finish_verify = task->finish_verify;
- mlget_item->get_miss = task->get_miss;
- c->mlget_task.mlget_num++;
-
- /* enough multi-get task items can be done */
- if ((c->mlget_task.mlget_num >= ms_setting.mult_key_num)
- || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
- {
- ms_mcd_mlget(c);
- break;
- }
- }
- } else {
- if ((c->remain_exec_num <= 0) && (c->mlget_task.mlget_num > 0)) {
- ms_mcd_mlget(c);
- }
- break;
- }
- }
-} /* ms_multi_getset_task_sch */
-
-/**
- * calculate the difference value of two time points
- *
- * @param start_time, the start time
- * @param end_time, the end time
- *
- * @return uint64_t, the difference value between start_time and end_time in us
- */
-int64_t ms_time_diff(struct timeval *start_time, struct timeval *end_time) {
- int64_t endtime = end_time->tv_sec * 1000000 + end_time->tv_usec;
- int64_t starttime = start_time->tv_sec * 1000000 + start_time->tv_usec;
-
- assert(endtime >= starttime);
-
- return endtime - starttime;
-} /* ms_time_diff */
-
-/**
- * after get the response from server for multi-get, the
- * function update the state of the task and do data verify if
- * necessary.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_update_multi_get_result(ms_conn_t *c) {
- ms_mlget_task_item_t *mlget_item;
- ms_task_item_t *item;
- char *orignval = NULL;
- char *orignkey = NULL;
-
- if (c == NULL) {
- return;
- }
- assert(c);
-
- for (int i = 0; i < c->mlget_task.mlget_num; i++) {
- mlget_item = &c->mlget_task.mlget_item[i];
- item = mlget_item->item;
- orignval = &ms_setting.char_block[item->value_offset];
- orignkey = &ms_setting.char_block[item->key_suffix_offset];
-
- /* update get miss counter */
- if (mlget_item->get_miss) {
- atomic_add_size(&ms_stats.get_misses, 1);
- }
-
- /* get nothing from server for this task item */
- if (mlget_item->verify && !mlget_item->finish_verify) {
- /* verify expire time if necessary */
- if (item->exp_time > 0) {
- struct timeval curr_time;
- gettimeofday(&curr_time, NULL);
-
- /* object doesn't expire but can't get it now */
- if (curr_time.tv_sec - item->client_time < item->exp_time - EXPIRE_TIME_ERROR) {
- atomic_add_size(&ms_stats.unexp_unget, 1);
-
- if (ms_setting.verbose) {
- char set_time[64];
- char cur_time[64];
- strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&item->client_time));
- strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
- fprintf(stderr,
- "\n\t<%d expire time verification failed, object "
- "doesn't expire but can't get it now\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\tset time: %s current time: %s "
- "diff time: %d expire time: %d\n"
- "\texpected data len: %d\n"
- "\texpected data: %.*s\n"
- "\treceived data: \n",
- c->sfd, item->key_size, item->key_prefix,
- item->key_size - (int) KEY_PREFIX_SIZE, orignkey, set_time, cur_time,
- (int) (curr_time.tv_sec - item->client_time), item->exp_time, item->value_size,
- item->value_size, orignval);
- fflush(stderr);
- }
- }
- } else {
- atomic_add_size(&ms_stats.vef_miss, 1);
-
- if (ms_setting.verbose) {
- fprintf(stderr,
- "\n<%d data verification failed\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\texpected data len: %d\n"
- "\texpected data: %.*s\n"
- "\treceived data: \n",
- c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
- orignkey, item->value_size, item->value_size, orignval);
- fflush(stderr);
- }
- }
- }
- }
- c->mlget_task.mlget_num = 0;
- c->mlget_task.value_index = INVALID_OFFSET;
-} /* ms_update_multi_get_result */
-
-/**
- * after get the response from server for single get, the
- * function update the state of the task and do data verify if
- * necessary.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- */
-static void ms_update_single_get_result(ms_conn_t *c, ms_task_item_t *item) {
- char *orignval = NULL;
- char *orignkey = NULL;
-
- if ((c == NULL) || (item == NULL)) {
- return;
- }
- assert(c);
- assert(item);
-
- orignval = &ms_setting.char_block[item->value_offset];
- orignkey = &ms_setting.char_block[item->key_suffix_offset];
-
- /* update get miss counter */
- if ((c->precmd.cmd == CMD_GET) && c->curr_task.get_miss) {
- atomic_add_size(&ms_stats.get_misses, 1);
- }
-
- /* get nothing from server for this task item */
- if ((c->precmd.cmd == CMD_GET) && c->curr_task.verify && !c->curr_task.finish_verify) {
- /* verify expire time if necessary */
- if (item->exp_time > 0) {
- struct timeval curr_time;
- gettimeofday(&curr_time, NULL);
-
- /* object doesn't expire but can't get it now */
- if (curr_time.tv_sec - item->client_time < item->exp_time - EXPIRE_TIME_ERROR) {
- atomic_add_size(&ms_stats.unexp_unget, 1);
-
- if (ms_setting.verbose) {
- char set_time[64];
- char cur_time[64];
- strftime(set_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&item->client_time));
- strftime(cur_time, 64, "%Y-%m-%d %H:%M:%S", localtime(&curr_time.tv_sec));
- fprintf(stderr,
- "\n\t<%d expire time verification failed, object "
- "doesn't expire but can't get it now\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\tset time: %s current time: %s "
- "diff time: %d expire time: %d\n"
- "\texpected data len: %d\n"
- "\texpected data: %.*s\n"
- "\treceived data: \n",
- c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
- orignkey, set_time, cur_time, (int) (curr_time.tv_sec - item->client_time),
- item->exp_time, item->value_size, item->value_size, orignval);
- fflush(stderr);
- }
- }
- } else {
- atomic_add_size(&ms_stats.vef_miss, 1);
-
- if (ms_setting.verbose) {
- fprintf(stderr,
- "\n<%d data verification failed\n"
- "\tkey len: %d\n"
- "\tkey: %" PRIx64 " %.*s\n"
- "\texpected data len: %d\n"
- "\texpected data: %.*s\n"
- "\treceived data: \n",
- c->sfd, item->key_size, item->key_prefix, item->key_size - (int) KEY_PREFIX_SIZE,
- orignkey, item->value_size, item->value_size, orignval);
- fflush(stderr);
- }
- }
- }
-} /* ms_update_single_get_result */
-
-/**
- * after get the response from server for set the function
- * update the state of the task and do data verify if necessary.
- *
- * @param c, pointer of the concurrency
- * @param item, pointer of task item which includes the object
- * information
- */
-static void ms_update_set_result(ms_conn_t *c, ms_task_item_t *item) {
- if ((c == NULL) || (item == NULL)) {
- return;
- }
- assert(c);
- assert(item);
-
- if (c->precmd.cmd == CMD_SET) {
- switch (c->precmd.retstat) {
- case MCD_STORED:
- if (item->value_offset == INVALID_OFFSET) {
- /* first set with the same offset of key suffix */
- item->value_offset = item->key_suffix_offset;
- } else {
- /* not first set, just increase the value offset */
- item->value_offset += 1;
- }
-
- /* set successes, update counter */
- c->set_cursor++;
- c->curr_task.set_opt++;
- c->curr_task.cycle_undo_set--;
- break;
-
- case MCD_SERVER_ERROR:
- default:
- break;
- } /* switch */
- }
-} /* ms_update_set_result */
-
-/**
- * update the response time result
- *
- * @param c, pointer of the concurrency
- */
-static void ms_update_stat_result(ms_conn_t *c) {
- bool get_miss = false;
-
- if (c == NULL) {
- return;
- }
- assert(c);
-
- gettimeofday(&c->end_time, NULL);
- uint64_t time_diff = (uint64_t) ms_time_diff(&c->start_time, &c->end_time);
-
- pthread_mutex_lock(&ms_statistic.stat_mutex);
-
- switch (c->precmd.cmd) {
- case CMD_SET:
- ms_record_event(&ms_statistic.set_stat, time_diff, false);
- break;
-
- case CMD_GET:
- if (c->curr_task.get_miss) {
- get_miss = true;
- }
- ms_record_event(&ms_statistic.get_stat, time_diff, get_miss);
- break;
-
- default:
- break;
- } /* switch */
-
- ms_record_event(&ms_statistic.total_stat, time_diff, get_miss);
- pthread_mutex_unlock(&ms_statistic.stat_mutex);
-} /* ms_update_stat_result */
-
-/**
- * after get response from server for the current operation, and
- * before doing the next operation, update the state of the
- * current operation.
- *
- * @param c, pointer of the concurrency
- */
-static void ms_update_task_result(ms_conn_t *c) {
- ms_task_item_t *item;
-
- if (c == NULL) {
- return;
- }
- assert(c);
-
- item = ms_get_cur_opt_item(c);
- if (item == NULL) {
- return;
- }
- assert(item);
-
- ms_update_set_result(c, item);
-
- if ((ms_setting.stat_freq > 0) && ((c->precmd.cmd == CMD_SET) || (c->precmd.cmd == CMD_GET))) {
- ms_update_stat_result(c);
- }
-
- /* update multi-get task item */
- if (((ms_setting.mult_key_num > 1) && (c->mlget_task.mlget_num >= ms_setting.mult_key_num))
- || ((c->remain_exec_num == 0) && (c->mlget_task.mlget_num > 0)))
- {
- ms_update_multi_get_result(c);
- } else {
- ms_update_single_get_result(c, item);
- }
-} /* ms_update_task_result */
-
-/**
- * run get and set operation
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_run_getset_task(ms_conn_t *c) {
- /**
- * extra one loop to get the last command return state. get the
- * last command return state.
- */
- if ((c->remain_exec_num >= 0) && (c->remain_exec_num != c->exec_num)) {
- ms_update_task_result(c);
- }
-
- /* multi-get */
- if (ms_setting.mult_key_num > 1) {
- /* operate next task item */
- ms_multi_getset_task_sch(c);
- } else {
- /* operate next task item */
- ms_single_getset_task_sch(c);
- }
-
- /* no task to do, exit */
- if ((c->remain_exec_num == -1) || ms_global.time_out) {
- return -1;
- }
-
- return EXIT_SUCCESS;
-} /* ms_run_getset_task */
-
-/**
- * the state machine call the function to execute task.
- *
- * @param c, pointer of the concurrency
- *
- * @return int, if success, return EXIT_SUCCESS, else return -1
- */
-int ms_exec_task(struct conn *c) {
- if (!ms_global.finish_warmup) {
- ms_warmup_server(c);
- } else {
- if (ms_run_getset_task(c)) {
- return -1;
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_exec_task */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_TASK_H
-#define MS_TASK_H
-
-#include <sys/types.h>
-#include <stdint.h>
-#if !defined(__cplusplus)
-# include <stdbool.h>
-#endif
-#include <time.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define UNIT_ITEMS_COUNT 1024 /* each window unit has 1024 items */
-#define KEY_PREFIX_SIZE (sizeof(uint64_t)) /* key prefix length: 8 bytes */
-#define INVALID_OFFSET (-1) /* invalid offset in the character table */
-#define FIXED_EXPIRE_TIME 60 /* default expire time is 60s */
-#define EXPIRE_TIME_ERROR 5 /* default expire time error is 5s */
-
-/* information of a task item(object) */
-typedef struct task_item {
- uint64_t key_prefix; /* prefix of the key, 8 bytes, binary */
- int key_size; /* key size */
- int key_suffix_offset; /* suffix offset in the global character table */
-
- int value_size; /* data size */
- int value_offset; /* data offset in the global character table */
-
- time_t client_time; /* the current client time */
- int exp_time; /* expire time */
-} ms_task_item_t;
-
-/* task item for multi-get */
-typedef struct mlget_task_item {
- ms_task_item_t *item; /* task item */
- bool verify; /* whether verify data or not */
- bool finish_verify; /* whether finish data verify or not */
- bool get_miss; /* whether get miss or not */
-} ms_mlget_task_item_t;
-
-/* information of multi-get task */
-typedef struct mlget_task {
- ms_mlget_task_item_t *mlget_item; /* multi-get task array */
- int mlget_num; /* how many tasks in mlget_task array */
- int value_index; /* the nth value received by the connect, for multi-get */
-} ms_mlget_task_t;
-
-/* structure used to store the state of the running task */
-typedef struct task {
- int cmd; /* command name */
- bool verify; /* whether verify data or not */
- bool finish_verify; /* whether finish data verify or not */
- bool get_miss; /* whether get miss or not */
- ms_task_item_t *item; /* task item */
-
- /* counter for command distribution adjustment */
- uint64_t get_opt; /* number of total get operations */
- uint64_t set_opt; /* number of total set operations, no including warmup set count */
- int cycle_undo_get; /* number of undo get in an adjustment cycle */
- int cycle_undo_set; /* number of undo set in an adjustment cycle */
- uint64_t verified_get; /* number of total verified get operations */
- uint64_t overwrite_set; /* number of total overwrite set operations */
-} ms_task_t;
-
-struct conn;
-
-/* the state machine call the function to execute task.*/
-int ms_exec_task(struct conn *c);
-
-/* calculate the difference value of two time points */
-int64_t ms_time_diff(struct timeval *start_time, struct timeval *end_time);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_TASK_H */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#include "mem_config.h"
-
-#if defined(HAVE_SYS_TIME_H)
-# include <sys/time.h>
-#endif
-
-#if defined(HAVE_TIME_H)
-# include <time.h>
-#endif
-
-#include "ms_thread.h"
-#include "ms_setting.h"
-#include "ms_atomic.h"
-
-/* global variable */
-pthread_key_t ms_thread_key;
-
-/* array of thread context structure, each thread has a thread context structure */
-static ms_thread_ctx_t *ms_thread_ctx;
-
-/* functions */
-static void ms_set_current_time(void);
-static void ms_check_sock_timeout(void);
-static void ms_clock_handler(const int fd, const short which, void *arg);
-static uint32_t ms_set_thread_cpu_affinity(uint32_t cpu);
-static int ms_setup_thread(ms_thread_ctx_t *thread_ctx);
-static void *ms_worker_libevent(void *arg);
-static void ms_create_worker(void *(*func)(void *), ms_thread_ctx_t *arg);
-
-/**
- * time-sensitive callers can call it by hand with this,
- * outside the normal ever-1-second timer
- */
-static void ms_set_current_time() {
- struct timeval timer;
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
-
- gettimeofday(&timer, NULL);
- ms_thread->curr_time = (rel_time_t) timer.tv_sec;
-} /* ms_set_current_time */
-
-/**
- * used to check whether UDP of command are waiting timeout
- * by the ever-1-second timer
- */
-static void ms_check_sock_timeout(void) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- ms_conn_t *c = NULL;
- int time_diff = 0;
-
- for (uint32_t i = 0; i < ms_thread->thread_ctx->nconns; i++) {
- c = &ms_thread->conn[i];
-
- if (c->udp) {
- time_diff = (int) (ms_thread->curr_time - (rel_time_t) c->start_time.tv_sec);
-
- /* wait time out */
- if (time_diff > SOCK_WAIT_TIMEOUT) {
- /* calculate dropped packets count */
- if (c->recvpkt > 0) {
- atomic_add_size(&ms_stats.pkt_drop, c->packets - c->recvpkt);
- }
-
- atomic_add_size(&ms_stats.udp_timeout, 1);
- ms_reset_conn(c, true);
- }
- }
- }
-} /* ms_check_sock_timeout */
-
-/* if disconnect, the ever-1-second timer will call this function to reconnect */
-static void ms_reconn_thread_socks(void) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- for (uint32_t i = 0; i < ms_thread->thread_ctx->nconns; i++) {
- ms_reconn_socks(&ms_thread->conn[i]);
- }
-} /* ms_reconn_thread_socks */
-
-/**
- * the handler of the ever-1-second timer
- *
- * @param fd, the descriptors of the socket
- * @param which, event flags
- * @param arg, argument
- */
-static void ms_clock_handler(const int fd, const short which, void *arg) {
- ms_thread_t *ms_thread = pthread_getspecific(ms_thread_key);
- struct timeval t = {.tv_sec = 1, .tv_usec = 0};
-
- UNUSED_ARGUMENT(fd);
- UNUSED_ARGUMENT(which);
- UNUSED_ARGUMENT(arg);
-
- ms_set_current_time();
-
- if (ms_thread->initialized) {
- /* only delete the event if it's actually there. */
- evtimer_del(&ms_thread->clock_event);
- ms_check_sock_timeout();
- } else {
- ms_thread->initialized = true;
- }
-
- ms_reconn_thread_socks();
-
- evtimer_set(&ms_thread->clock_event, ms_clock_handler, 0);
- event_base_set(ms_thread->base, &ms_thread->clock_event);
- evtimer_add(&ms_thread->clock_event, &t);
-} /* ms_clock_handler */
-
-/**
- * used to bind thread to CPU if the system supports
- *
- * @param cpu, cpu index
- *
- * @return if success, return EXIT_SUCCESS, else return -1
- */
-static uint32_t ms_set_thread_cpu_affinity(uint32_t cpu) {
- uint32_t ret = 0;
-
-#ifdef HAVE_CPU_SET_T
- cpu_set_t cpu_set;
- CPU_ZERO(&cpu_set);
- CPU_SET(cpu, &cpu_set);
-
- if (sched_setaffinity(0, sizeof(cpu_set_t), &cpu_set) == -1) {
- fprintf(stderr, "WARNING: Could not set CPU Affinity, continuing...\n");
- ret = 1;
- }
-#else
- UNUSED_ARGUMENT(cpu);
-#endif
-
- return ret;
-} /* ms_set_thread_cpu_affinity */
-
-/**
- * Set up a thread's information.
- *
- * @param thread_ctx, pointer of the thread context structure
- *
- * @return if success, return EXIT_SUCCESS, else return -1
- */
-static int ms_setup_thread(ms_thread_ctx_t *thread_ctx) {
- ms_thread_t *ms_thread = (ms_thread_t *) calloc(sizeof(*ms_thread), 1);
- pthread_setspecific(ms_thread_key, (void *) ms_thread);
-
- ms_thread->thread_ctx = thread_ctx;
- ms_thread->nactive_conn = thread_ctx->nconns;
- ms_thread->initialized = false;
- static ATOMIC uint32_t cnt = 0;
-
- gettimeofday(&ms_thread->startup_time, NULL);
-
- ms_thread->base = event_base_new();
- if (ms_thread->base == NULL) {
- if (atomic_add_32_nv(&cnt, 1) == 0) {
- fprintf(stderr, "Can't allocate event base.\n");
- }
-
- return -1;
- }
-
- ms_thread->conn = (ms_conn_t *) malloc((size_t) thread_ctx->nconns * sizeof(ms_conn_t));
- if (ms_thread->conn == NULL) {
- if (atomic_add_32_nv(&cnt, 1) == 0) {
- fprintf(stderr, "Can't allocate concurrency structure for thread descriptors.");
- }
-
- return -1;
- }
- memset(ms_thread->conn, 0, (size_t) thread_ctx->nconns * sizeof(ms_conn_t));
-
- for (uint32_t i = 0; i < thread_ctx->nconns; i++) {
- ms_thread->conn[i].conn_idx = i;
- if (ms_setup_conn(&ms_thread->conn[i])) {
- /* only output this error once */
- if (atomic_add_32_nv(&cnt, 1) == 0) {
- fprintf(stderr, "Initializing connection failed.\n");
- }
-
- return -1;
- }
- }
-
- return EXIT_SUCCESS;
-} /* ms_setup_thread */
-
-/**
- * Worker thread: main event loop
- *
- * @param arg, the pointer of argument
- *
- * @return void*
- */
-static void *ms_worker_libevent(void *arg) {
- ms_thread_t *ms_thread = NULL;
- ms_thread_ctx_t *thread_ctx = (ms_thread_ctx_t *) arg;
-
- /**
- * If system has more than one cpu and supports set cpu
- * affinity, try to bind each thread to a cpu core;
- */
- if (ms_setting.ncpu > 1) {
- ms_set_thread_cpu_affinity(thread_ctx->thd_idx % ms_setting.ncpu);
- }
-
- if (ms_setup_thread(thread_ctx)) {
- exit(1);
- }
-
- /* each thread with a timer */
- ms_clock_handler(0, 0, 0);
-
- pthread_mutex_lock(&ms_global.init_lock.lock);
- ms_global.init_lock.count++;
- pthread_cond_signal(&ms_global.init_lock.cond);
- pthread_mutex_unlock(&ms_global.init_lock.lock);
-
- ms_thread = pthread_getspecific(ms_thread_key);
- event_base_loop(ms_thread->base, 0);
- event_base_free(ms_thread->base);
- free(ms_thread);
-
- return NULL;
-} /* ms_worker_libevent */
-
-/**
- * Creates a worker thread.
- *
- * @param func, the callback function
- * @param arg, the argument to pass to the callback function
- */
-static void ms_create_worker(void *(*func)(void *), ms_thread_ctx_t *arg) {
- pthread_attr_t attr;
- int ret;
-
- pthread_attr_init(&attr);
-
- if ((ret = pthread_create(&arg->pth_id, &attr, func, arg))) {
- fprintf(stderr, "Can't create thread: %s.\n", strerror(ret));
- exit(1);
- }
-} /* ms_create_worker */
-
-/* initialize threads */
-void ms_thread_init() {
- ms_thread_ctx =
- (ms_thread_ctx_t *) malloc(sizeof(ms_thread_ctx_t) * (size_t) ms_setting.nthreads);
- if (ms_thread_ctx == NULL) {
- fprintf(stderr, "Can't allocate thread descriptors.");
- exit(1);
- }
-
- for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
- ms_thread_ctx[i].thd_idx = i;
- ms_thread_ctx[i].nconns = ms_setting.nconns / ms_setting.nthreads;
-
- /**
- * If only one server, all the connections in all threads
- * connects the same server. For support multi-servers, simple
- * distribute thread to server.
- */
- ms_thread_ctx[i].srv_idx = i % ms_setting.srv_cnt;
- ms_thread_ctx[i].tps_perconn = ms_setting.expected_tps / (int) ms_setting.nconns;
- ms_thread_ctx[i].exec_num_perconn = ms_setting.exec_num / ms_setting.nconns;
- }
-
- if (pthread_key_create(&ms_thread_key, NULL)) {
- fprintf(stderr, "Can't create pthread keys. Major malfunction!\n");
- exit(1);
- }
- /* Create threads after we've done all the epoll setup. */
- for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
- ms_create_worker(ms_worker_libevent, &ms_thread_ctx[i]);
- }
-} /* ms_thread_init */
-
-/* cleanup some resource of threads when all the threads exit */
-void ms_thread_cleanup() {
- for (uint32_t i = 0; i < ms_setting.nthreads; i++) {
- pthread_join(ms_thread_ctx[i].pth_id, NULL);
- }
- if (ms_thread_ctx) {
- free(ms_thread_ctx);
- }
- pthread_key_delete(ms_thread_key);
-} /* ms_thread_cleanup */
+++ /dev/null
-/*
- +--------------------------------------------------------------------+
- | libmemcached - C/C++ Client Library for memcached |
- +--------------------------------------------------------------------+
- | Redistribution and use in source and binary forms, with or without |
- | modification, are permitted under the terms of the BSD license. |
- | You should have received a copy of the license in a bundled file |
- | named LICENSE; in case you did not receive a copy you can review |
- | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
- +--------------------------------------------------------------------+
- | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
- | Copyright (c) 2020 Michael Wallner <mike@php.net> |
- +--------------------------------------------------------------------+
-*/
-
-#ifndef MS_THREAD_H
-#define MS_THREAD_H
-
-#include <pthread.h>
-#include <sched.h>
-#include "ms_conn.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** Time relative to server start. Smaller than time_t on 64-bit systems. */
-typedef unsigned int rel_time_t;
-
-/* Used to store the context of each thread */
-typedef struct thread_ctx {
- uint32_t thd_idx; /* the thread index */
- uint32_t nconns; /* how many connections included by the thread */
- uint32_t srv_idx; /* index of the thread */
- int tps_perconn; /* expected throughput per connection */
- int64_t exec_num_perconn; /* execute number per connection */
- pthread_t pth_id;
-} ms_thread_ctx_t;
-
-/* Used to store the private variables of each thread */
-typedef struct thread {
- ms_conn_t *conn; /* conn array to store all the conn in the thread */
- uint32_t nactive_conn; /* how many connects are active */
-
- ms_thread_ctx_t *thread_ctx; /* thread context from the caller */
- struct event_base *base; /* libevent handler created by this thread */
-
- rel_time_t curr_time; /* current time */
- struct event clock_event; /* clock event to time each one second */
- bool initialized; /* whether clock_event has been initialized */
-
- struct timeval startup_time; /* start time of the thread */
-} ms_thread_t;
-
-/* initialize threads */
-void ms_thread_init(void);
-
-/* cleanup some resource of threads when all the threads exit */
-void ms_thread_cleanup(void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* end of MS_THREAD_H */
set(TESTING_ROOT ${CMAKE_CURRENT_BINARY_DIR})
set(SOURCES_ROOT ${CMAKE_SOURCE_DIR})
set_source_files_properties(main.cpp PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-configure_file(conf.h.in conf.h @ONLY)
add_executable(runtests ${TESTING_SRC})
set_target_properties(runtests PROPERTIES CXX_STANDARD 17)
target_include_directories(runtests PRIVATE
endif()
add_dependencies(runtests ${CLIENTS})
-if(HAVE_MEMASLAP)
+if(TARGET memaslap)
+ set(HAVE_MEMASLAP 1)
add_dependencies(runtests memaslap)
endif()
+configure_file(conf.h.in conf.h @ONLY)
+
catch_discover_tests(runtests
TEST_SPEC "lib*")
catch_discover_tests(runtests
using Catch::Matchers::Contains;
TEST_CASE("bin/memaslap") {
- Shell sh{string{TESTING_ROOT "/../src/bin/contrib"}};
+ Shell sh{string{TESTING_ROOT "/../contrib/bin/memaslap"}};
SECTION("no servers provided") {
string output;
projects / awesomized / libmemcached / commitdiff
