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

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  LibMemcached
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  Copyright (C) 2006-2009 Brian Aker
   7  *  All rights reserved.
   8  *
   9  *  Redistribution and use in source and binary forms, with or without
  10  *  modification, are permitted provided that the following conditions are
  11  *  met:
  12  *
  13  *      * Redistributions of source code must retain the above copyright
  14  *  notice, this list of conditions and the following disclaimer.
  15  *
  16  *      * Redistributions in binary form must reproduce the above
  17  *  copyright notice, this list of conditions and the following disclaimer
  18  *  in the documentation and/or other materials provided with the
  19  *  distribution.
  20  *
  21  *      * The names of its contributors may not be used to endorse or
  22  *  promote products derived from this software without specific prior
  23  *  written permission.
  24  *
  25  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39 /*
  40   Common include file for libmemached
  41 */
  42
  43 #pragma once
  44
  45 #include <config.h>
  46
  47 #ifdef __cplusplus
  48 #include <cstdio>
  49 #include <cstdlib>
  50 #include <cstring>
  51 #include <ctime>
  52 #include <ctype.h>
  53 #else
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <string.h>
  57 #include <time.h>
  58 #endif
  59
  60 #include <errno.h>
  61 #include <fcntl.h>
  62 #include <limits.h>
  63 #include <sys/types.h>
  64 #include <unistd.h>
  65
  66 #include <libmemcached/memcached.h>
  67 #include <libmemcached/watchpoint.h>
  68 #include <libmemcached/is.h>
  69 #include <libmemcached/namespace.h>
  70
  71 #include <libmemcached/server_instance.h>
  72
  73 #ifdef HAVE_POLL_H
  74 #include <poll.h>
  75 #else
  76 #include "poll/poll.h"
  77 #endif
  78
  79
  80 #ifdef __cplusplus
  81 extern "C" {
  82 #endif
  83
  84 typedef memcached_return_t (*memcached_server_execute_fn)(memcached_st *ptr, memcached_server_write_instance_st server, void *context);
  85
  86 LIBMEMCACHED_LOCAL
  87 memcached_server_write_instance_st memcached_server_instance_fetch(memcached_st *ptr, uint32_t server_key);
  88
  89 LIBMEMCACHED_LOCAL
  90 memcached_return_t memcached_server_execute(memcached_st *ptr,
  91                                             memcached_server_execute_fn callback,
  92                                             void *context);
  93 #ifdef __cplusplus
  94 } // extern "C"
  95 #endif
  96
  97
  98 /* These are private not to be installed headers */
  99 #include <libmemcached/error.hpp>
 100 #include <libmemcached/memory.h>
 101 #include <libmemcached/io.h>
 102 #ifdef __cplusplus
 103 #include <libmemcached/string.hpp>
 104 #include <libmemcached/io.hpp>
 105 #include <libmemcached/do.hpp>
 106 #endif
 107 #include <libmemcached/internal.h>
 108 #include <libmemcached/array.h>
 109 #include <libmemcached/libmemcached_probes.h>
 110 #include <libmemcached/memcached/protocol_binary.h>
 111 #include <libmemcached/byteorder.h>
 112 #include <libmemcached/initialize_query.h>
 113 #include <libmemcached/response.h>
 114 #include <libmemcached/namespace.h>
 115
 116 #ifdef __cplusplus
 117 #include <libmemcached/backtrace.hpp>
 118 #include <libmemcached/assert.hpp>
 119 #endif
 120
 121 #include <libmemcached/continuum.hpp>
 122
 123 #if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
 124
 125 #define likely(x)       if((x))
 126 #define unlikely(x)     if((x))
 127
 128 #else
 129
 130 #define likely(x)       if(__builtin_expect((x) != 0, 1))
 131 #define unlikely(x)     if(__builtin_expect((x) != 0, 0))
 132 #endif
 133
 134 #define MEMCACHED_BLOCK_SIZE 1024
 135 #define MEMCACHED_DEFAULT_COMMAND_SIZE 350
 136 #define SMALL_STRING_LEN 1024
 137 #define HUGE_STRING_LEN 8196
 138
 139 #ifdef __cplusplus
 140 extern "C" {
 141 #endif
 142
 143 LIBMEMCACHED_LOCAL
 144 memcached_return_t memcached_connect(memcached_server_write_instance_st ptr);
 145
 146 LIBMEMCACHED_LOCAL
 147 memcached_return_t run_distribution(memcached_st *ptr);
 148
 149 #define memcached_server_response_increment(A) (A)->cursor_active++
 150 #define memcached_server_response_decrement(A) (A)->cursor_active--
 151 #define memcached_server_response_reset(A) (A)->cursor_active=0
 152
 153 LIBMEMCACHED_LOCAL
 154 void set_last_disconnected_host(memcached_server_write_instance_st ptr);
 155
 156 #ifdef __cplusplus
 157 LIBMEMCACHED_LOCAL
 158 memcached_return_t memcached_key_test(const memcached_st& memc,
 159                                       const char * const *keys,
 160                                       const size_t *key_length,
 161                                       size_t number_of_keys);
 162 #endif
 163
 164 LIBMEMCACHED_LOCAL
 165 memcached_return_t memcached_purge(memcached_server_write_instance_st ptr);
 166
 167 LIBMEMCACHED_LOCAL
 168   memcached_server_st *__server_create_with(const memcached_st *memc,
 169                                             memcached_server_write_instance_st host,
 170                                             const char *hostname,
 171                                             in_port_t port,
 172                                             uint32_t weight,
 173                                             memcached_connection_t type);
 174
 175
 176 static inline memcached_return_t memcached_validate_key_length(size_t key_length, bool binary)
 177 {
 178   if (key_length == 0)
 179   {
 180     return MEMCACHED_BAD_KEY_PROVIDED;
 181   }
 182
 183   if (binary)
 184   {
 185     if (key_length > 0xffff)
 186     {
 187       return MEMCACHED_BAD_KEY_PROVIDED;
 188     }
 189   }
 190   else
 191   {
 192     if (key_length >= MEMCACHED_MAX_KEY)
 193     {
 194       return MEMCACHED_BAD_KEY_PROVIDED;
 195     }
 196   }
 197
 198   return MEMCACHED_SUCCESS;
 199 }
 200
 201 #ifdef __cplusplus
 202 }
 203 #endif