git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached-1.0/struct/memcached.h

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
  14  *
  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #pragma once
  39
  40 struct memcached_st {
  41   /**
  42     @note these are static and should not change without a call to behavior.
  43   */
  44   struct {
  45     bool is_purging:1;
  46     bool is_processing_input:1;
  47     bool is_time_for_rebuild:1;
  48   } state;
  49
  50   struct {
  51     // Everything below here is pretty static.
  52     bool auto_eject_hosts:1;
  53     bool binary_protocol:1;
  54     bool buffer_requests:1;
  55     bool hash_with_namespace:1;
  56     bool no_block:1; // Don't block
  57     bool reply:1;
  58     bool randomize_replica_read:1;
  59     bool support_cas:1;
  60     bool tcp_nodelay:1;
  61     bool use_sort_hosts:1;
  62     bool use_udp:1;
  63     bool verify_key:1;
  64     bool tcp_keepalive:1;
  65     bool is_aes:1;
  66   } flags;
  67
  68   memcached_server_distribution_t distribution;
  69   hashkit_st hashkit;
  70   struct {
  71     unsigned int version;
  72   } server_info;
  73   uint32_t number_of_hosts;
  74 #ifdef __cplusplus
  75   org::libmemcached::Instance* servers;
  76   org::libmemcached::Instance* last_disconnected_server;
  77 #else
  78   void *servers;
  79   void *last_disconnected_server;
  80 #endif
  81   int32_t snd_timeout;
  82   int32_t rcv_timeout;
  83   uint32_t server_failure_limit;
  84   uint32_t io_msg_watermark;
  85   uint32_t io_bytes_watermark;
  86   uint32_t io_key_prefetch;
  87   uint32_t tcp_keepidle;
  88   int32_t poll_timeout;
  89   int32_t connect_timeout; // How long we will wait on connect() before we will timeout
  90   int32_t retry_timeout;
  91   int32_t dead_timeout;
  92   int send_size;
  93   int recv_size;
  94   void *user_data;
  95   uint64_t query_id;
  96   uint32_t number_of_replicas;
  97   memcached_result_st result;
  98
  99   struct {
 100     bool weighted;
 101     uint32_t continuum_count; // Ketama
 102     uint32_t continuum_points_counter; // Ketama
 103     time_t next_distribution_rebuild; // Ketama
 104     memcached_continuum_item_st *continuum; // Ketama
 105   } ketama;
 106
 107   struct memcached_virtual_bucket_t *virtual_bucket;
 108
 109   struct memcached_allocator_t allocators;
 110
 111   memcached_clone_fn on_clone;
 112   memcached_cleanup_fn on_cleanup;
 113   memcached_trigger_key_fn get_key_failure;
 114   memcached_trigger_delete_key_fn delete_trigger;
 115   memcached_callback_st *callbacks;
 116   struct memcached_sasl_st sasl;
 117   struct memcached_error_t *error_messages;
 118   struct memcached_array_st *_namespace;
 119   struct {
 120     uint32_t initial_pool_size;
 121     uint32_t max_pool_size;
 122     int32_t version; // This is used by pool and others to determine if the memcached_st is out of date.
 123     struct memcached_array_st *filename;
 124   } configure;
 125   struct {
 126     bool is_allocated:1;
 127   } options;
 128
 129 };