--- /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 */
projects / awesomized / libmemcached / blobdiff