X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fcommon.h;h=b4a9e8b4f0f656cc838031696578def44669c705;hb=ce11ec5eadbc51ff26aa6b64f52cf36e6b703f46;hp=b240619669e27de4dc779ed30e189fff98d472cf;hpb=1d7f999b7d38db3308a0533a83fea23987fb0178;p=awesomized%2Flibmemcached diff --git a/libmemcached/common.h b/libmemcached/common.h index b2406196..b4a9e8b4 100644 --- a/libmemcached/common.h +++ b/libmemcached/common.h @@ -1,13 +1,27 @@ +/* LibMemcached + * Copyright (C) 2006-2009 Brian Aker + * All rights reserved. + * + * Use and distribution licensed under the BSD license. See + * the COPYING file in the parent directory for full text. + * + * Summary: + * + */ + /* Common include file for libmemached */ -#ifndef __COMMON_H__ -#define __COMMON_H__ +#ifndef LIBMEMCACHED_COMMON_H +#define LIBMEMCACHED_COMMON_H + +#include "config.h" #include #include #include +#include #include #include #include @@ -20,24 +34,50 @@ #include #include #include - -#if TIME_WITH_SYS_TIME +#ifdef TIME_WITH_SYS_TIME # include # include #else -# if HAVE_SYS_TIME_H +# ifdef HAVE_SYS_TIME_H # include # else # include # endif #endif +/* Define this here, which will turn on the visibilty controls while we're + * building libmemcached. + */ +#define BUILDING_LIBMEMCACHED 1 + +#include "libmemcached/memcached.h" +#include "libmemcached/watchpoint.h" -#include -#include "memcached_io.h" +typedef struct memcached_server_st memcached_server_instance_st; + +/* These are private not to be installed headers */ +#include "libmemcached/io.h" +#include "libmemcached/internal.h" +#include "libmemcached/libmemcached_probes.h" +#include "libmemcached/memcached/protocol_binary.h" +#include "libmemcached/byteorder.h" +#include "libmemcached/response.h" + +/* string value */ +struct memcached_continuum_item_st +{ + uint32_t index; + uint32_t value; +}; + +/* Yum, Fortran.... can you make the reference? */ +typedef enum { + MEM_NOT= -1, + MEM_FALSE= false, + MEM_TRUE= true, +} memcached_ternary_t; -#include #if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) @@ -46,69 +86,131 @@ #else -#define likely(x) if(__builtin_expect(!!(x), 1)) -#define unlikely(x) if(__builtin_expect((x), 0)) -#endif - - -#ifdef HAVE_DTRACE -#define _DTRACE_VERSION 1 -#else -#undef _DTRACE_VERSION +#define likely(x) if(__builtin_expect((x) != 0, 1)) +#define unlikely(x) if(__builtin_expect((x) != 0, 0)) #endif -#include "libmemcached_probes.h" - #define MEMCACHED_BLOCK_SIZE 1024 #define MEMCACHED_DEFAULT_COMMAND_SIZE 350 #define SMALL_STRING_LEN 1024 #define HUGE_STRING_LEN 8196 - -typedef enum { - MEM_NO_BLOCK= (1 << 0), - MEM_TCP_NODELAY= (1 << 1), - MEM_REUSE_MEMORY= (1 << 2), - MEM_USE_MD5= (1 << 3), - /* 4 was once Ketama */ - MEM_USE_CRC= (1 << 5), - MEM_USE_CACHE_LOOKUPS= (1 << 6), - MEM_SUPPORT_CAS= (1 << 7), - MEM_BUFFER_REQUESTS= (1 << 8), - MEM_USE_SORT_HOSTS= (1 << 9), - MEM_VERIFY_KEY= (1 << 10), -} memcached_flags; - /* Hashing algo */ -void md5_signature(unsigned char *key, unsigned int length, unsigned char *result); + +LIBMEMCACHED_LOCAL +void md5_signature(const unsigned char *key, unsigned int length, unsigned char *result); +LIBMEMCACHED_LOCAL uint32_t hash_crc32(const char *data, size_t data_len); -uint32_t hsieh_hash(char *key, size_t key_length); -uint32_t murmur_hash(char *key, size_t key_length); +#ifdef HAVE_HSIEH_HASH +LIBMEMCACHED_LOCAL +uint32_t hsieh_hash(const char *key, size_t key_length); +#endif +LIBMEMCACHED_LOCAL +uint32_t murmur_hash(const char *key, size_t key_length); +LIBMEMCACHED_LOCAL +uint32_t jenkins_hash(const void *key, size_t length, uint32_t initval); + +LIBMEMCACHED_LOCAL +memcached_return_t memcached_connect(memcached_server_instance_st *ptr); +LIBMEMCACHED_LOCAL +void memcached_quit_server(memcached_server_instance_st *ptr, uint8_t io_death); -memcached_return memcached_connect(memcached_server_st *ptr); -memcached_return memcached_response(memcached_server_st *ptr, - char *buffer, size_t buffer_length, - memcached_result_st *result); -uint32_t memcached_generate_hash(memcached_st *ptr, char *key, size_t key_length); -void memcached_quit_server(memcached_server_st *ptr, uint8_t io_death); +LIBMEMCACHED_LOCAL +memcached_return_t run_distribution(memcached_st *ptr); #define memcached_server_response_increment(A) (A)->cursor_active++ #define memcached_server_response_decrement(A) (A)->cursor_active-- #define memcached_server_response_reset(A) (A)->cursor_active=0 -memcached_return memcached_do(memcached_server_st *ptr, char *commmand, - size_t command_length, uint8_t with_flush); -memcached_return memcached_version(memcached_st *ptr); -memcached_return value_fetch(memcached_server_st *ptr, - char *buffer, - memcached_result_st *result); -void server_list_free(memcached_st *ptr, memcached_server_st *servers); +// These are private +#define memcached_is_allocated(__object) ((__object)->options.is_allocated) +#define memcached_is_initialized(__object) ((__object)->options.is_initialized) +#define memcached_is_purging(__object) ((__object)->state.is_purging) +#define memcached_is_processing_input(__object) ((__object)->state.is_processing_input) +#define memcached_set_purging(__object, __value) ((__object)->state.is_purging= (__value)) +#define memcached_set_processing_input(__object, __value) ((__object)->state.is_processing_input= (__value)) +#define memcached_set_initialized(__object, __value) ((__object)->options.is_initialized(= (__value)) +#define memcached_set_allocated(__object, __value) ((__object)->options.is_allocated(= (__value)) + + +LIBMEMCACHED_LOCAL +memcached_return_t memcached_do(memcached_server_instance_st *ptr, const void *commmand, + size_t command_length, uint8_t with_flush); +LIBMEMCACHED_LOCAL +memcached_return_t value_fetch(memcached_server_instance_st *ptr, + char *buffer, + memcached_result_st *result); +LIBMEMCACHED_LOCAL +void server_list_free(memcached_st *ptr, memcached_server_instance_st *servers); + +LIBMEMCACHED_LOCAL +memcached_return_t memcached_key_test(const char * const *keys, + const size_t *key_length, + size_t number_of_keys); + + +LIBMEMCACHED_LOCAL +uint32_t generate_hash(memcached_st *ptr, const char *key, size_t key_length); + +LIBMEMCACHED_LOCAL +memcached_return_t memcached_purge(memcached_server_instance_st *ptr); + +static inline memcached_return_t memcached_validate_key_length(size_t key_length, bool binary) +{ + unlikely (key_length == 0) + return MEMCACHED_BAD_KEY_PROVIDED; + + if (binary) + { + unlikely (key_length > 0xffff) + return MEMCACHED_BAD_KEY_PROVIDED; + } + else + { + unlikely (key_length >= MEMCACHED_MAX_KEY) + return MEMCACHED_BAD_KEY_PROVIDED; + } + + return MEMCACHED_SUCCESS; +} + +#ifdef TCP_CORK + #define CORK TCP_CORK +#elif defined TCP_NOPUSH + #define CORK TCP_NOPUSH +#endif + +/* + test_cork() tries to enable TCP_CORK. IF TCP_CORK is not an option + on the system it returns false but sets errno to 0. Otherwise on + failure errno is set. +*/ +static inline memcached_ternary_t test_cork(memcached_server_st *ptr, int enable) +{ +#ifdef CORK + if (ptr->type != MEMCACHED_CONNECTION_TCP) + return MEM_FALSE; + + int err= setsockopt(ptr->fd, IPPROTO_TCP, CORK, + &enable, (socklen_t)sizeof(int)); + if (! err) + { + return MEM_TRUE; + } + + perror(strerror(errno)); + ptr->cached_errno= errno; + + return MEM_FALSE; +#else + (void)ptr; + (void)enable; -memcached_return memcachd_key_test(char **keys, size_t *key_length, - unsigned int number_of_keys); + ptr->cached_errno= 0; -memcached_return run_distribution(memcached_st *ptr); + return MEM_NOT; +#endif +} -uint32_t generate_hash(memcached_st *ptr, char *key, size_t key_length); -#endif /* __COMMON_H__ */ +#endif /* LIBMEMCACHED_COMMON_H */