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

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
   6  *  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
  39 #pragma once
  40
  41 #ifndef WIN32
  42 #include <netdb.h>
  43 #endif
  44
  45 #ifdef NI_MAXHOST
  46 #define MEMCACHED_NI_MAXHOST NI_MAXHOST
  47 #else
  48 #define MEMCACHED_NI_MAXHOST 1025
  49 #endif
  50
  51 #ifdef NI_MAXSERV
  52 #define MEMCACHED_NI_MAXSERV NI_MAXSERV
  53 #else
  54 #define MEMCACHED_NI_MAXSERV 32
  55 #endif
  56
  57 #ifdef __cplusplus
  58
  59 namespace org {
  60 namespace libmemcached {
  61
  62 struct Instance {
  63   in_port_t port() const
  64   {
  65     return port_;
  66   }
  67
  68   void port(in_port_t arg)
  69   {
  70     port_= arg;
  71   }
  72
  73   void mark_server_as_clean()
  74   {
  75     server_failure_counter= 0;
  76     next_retry= 0;
  77   }
  78
  79   void disable()
  80   {
  81   }
  82
  83   void enable()
  84   {
  85   }
  86
  87   uint32_t response_count() const
  88   {
  89     return cursor_active_;
  90   }
  91
  92   struct {
  93     bool is_allocated:1;
  94     bool is_initialized:1;
  95     bool is_shutting_down:1;
  96     bool is_dead:1;
  97   } options;
  98   uint32_t number_of_hosts;
  99   uint32_t cursor_active_;
 100   in_port_t port_;
 101   memcached_socket_t fd;
 102   uint32_t io_bytes_sent; /* # bytes sent since last read */
 103   uint32_t request_id;
 104   uint32_t server_failure_counter;
 105   uint64_t server_failure_counter_query_id;
 106   uint32_t weight;
 107   uint32_t version;
 108   enum memcached_server_state_t state;
 109   struct {
 110     uint32_t read;
 111     uint32_t write;
 112     uint32_t timeouts;
 113     size_t _bytes_read;
 114   } io_wait_count;
 115   uint8_t major_version; // Default definition of UINT8_MAX means that it has not been set.
 116   uint8_t micro_version; // ditto, and note that this is the third, not second version bit
 117   uint8_t minor_version; // ditto
 118   memcached_connection_t type;
 119   char *read_ptr;
 120   size_t read_buffer_length;
 121   size_t read_data_length;
 122   size_t write_buffer_offset;
 123   struct addrinfo *address_info;
 124   struct addrinfo *address_info_next;
 125   time_t next_retry;
 126   struct memcached_st *root;
 127   uint64_t limit_maxbytes;
 128   struct memcached_error_t *error_messages;
 129   char read_buffer[MEMCACHED_MAX_BUFFER];
 130   char write_buffer[MEMCACHED_MAX_BUFFER];
 131   char hostname[MEMCACHED_NI_MAXHOST];
 132 };
 133
 134 } // namespace libmemcached
 135 } // namespace org
 136
 137 #endif