git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/common.h

   1 /*
   2   Common include file for libmemached
   3 */
   4
   5 #ifndef __COMMON_H__
   6 #define __COMMON_H__
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <ctype.h>
  12 #include <sys/types.h>
  13 #include <sys/socket.h>
  14 #include <netinet/in.h>
  15 #include <arpa/inet.h>
  16 #include <netdb.h>
  17 #include <unistd.h>
  18 #include <limits.h>
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <sys/un.h>
  22 #include <netinet/tcp.h>
  23
  24 #if TIME_WITH_SYS_TIME
  25 # include <sys/time.h>
  26 # include <time.h>
  27 #else
  28 # if HAVE_SYS_TIME_H
  29 #  include <sys/time.h>
  30 # else
  31 #  include <time.h>
  32 # endif
  33 #endif
  34
  35
  36
  37 #include <memcached.h>
  38 #include "memcached_io.h"
  39
  40 #include <libmemcached_config.h>
  41
  42 #if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
  43
  44 #define likely(x)       if((x))
  45 #define unlikely(x)     if((x))
  46
  47 #else
  48
  49 #define likely(x)       if(__builtin_expect(!!(x), 1))
  50 #define unlikely(x)     if(__builtin_expect((x), 0))
  51 #endif
  52
  53
  54 #ifdef HAVE_DTRACE
  55 #define _DTRACE_VERSION 1
  56 #else
  57 #undef _DTRACE_VERSION
  58 #endif
  59
  60 #include "libmemcached_probes.h"
  61
  62 #define MEMCACHED_BLOCK_SIZE 1024
  63 #define MEMCACHED_DEFAULT_COMMAND_SIZE 350
  64 #define SMALL_STRING_LEN 1024
  65 #define HUGE_STRING_LEN 8196
  66
  67
  68 typedef enum {
  69   MEM_NO_BLOCK= (1 << 0),
  70   MEM_TCP_NODELAY= (1 << 1),
  71   MEM_REUSE_MEMORY= (1 << 2),
  72   MEM_USE_MD5= (1 << 3),
  73   /* 4 was once Ketama */
  74   MEM_USE_CRC= (1 << 5),
  75   MEM_USE_CACHE_LOOKUPS= (1 << 6),
  76   MEM_SUPPORT_CAS= (1 << 7),
  77   MEM_BUFFER_REQUESTS= (1 << 8),
  78   MEM_USE_SORT_HOSTS= (1 << 9),
  79   MEM_VERIFY_KEY= (1 << 10),
  80 } memcached_flags;
  81
  82 /* Hashing algo */
  83 void md5_signature(unsigned char *key, unsigned int length, unsigned char *result);
  84 uint32_t hash_crc32(const char *data,
  85                     size_t data_len);
  86 uint32_t hsieh_hash(char *key, size_t key_length);
  87 uint32_t murmur_hash(char *key, size_t key_length);
  88
  89 memcached_return memcached_connect(memcached_server_st *ptr);
  90 memcached_return memcached_response(memcached_server_st *ptr,
  91                                     char *buffer, size_t buffer_length,
  92                                     memcached_result_st *result);
  93 uint32_t memcached_generate_hash(memcached_st *ptr, char *key, size_t key_length);
  94 void memcached_quit_server(memcached_server_st *ptr, uint8_t io_death);
  95
  96 #define memcached_server_response_increment(A) (A)->cursor_active++
  97 #define memcached_server_response_decrement(A) (A)->cursor_active--
  98 #define memcached_server_response_reset(A) (A)->cursor_active=0
  99
 100 memcached_return memcached_do(memcached_server_st *ptr, char *commmand,
 101                               size_t command_length, uint8_t with_flush);
 102 memcached_return memcached_version(memcached_st *ptr);
 103 memcached_return value_fetch(memcached_server_st *ptr,
 104                              char *buffer,
 105                              memcached_result_st *result);
 106 void server_list_free(memcached_st *ptr, memcached_server_st *servers);
 107
 108 memcached_return memcachd_key_test(char **keys, size_t *key_length,
 109                                    unsigned int number_of_keys);
 110
 111 memcached_return run_distribution(memcached_st *ptr);
 112
 113 uint32_t generate_hash(memcached_st *ptr, char *key, size_t key_length);
 114 #endif /* __COMMON_H__ */