git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/server_list.cc

   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) 2006-2010 Brian Aker All rights reserved.
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   8  *  Redistribution and use in source and binary forms, with or without
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  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
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  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
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  20  *      * The names of its contributors may not be used to endorse or
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  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  37
  38
  39
  40 #include <libmemcached/common.h>
  41
  42 memcached_server_list_st
  43 memcached_server_list_append_with_weight(memcached_server_list_st ptr,
  44                                          const char *hostname, in_port_t port,
  45                                          uint32_t weight,
  46                                          memcached_return_t *error)
  47 {
  48   uint32_t count;
  49   memcached_server_list_st new_host_list;
  50
  51   memcached_return_t unused;
  52   if (error == NULL)
  53     error= &unused;
  54
  55   if (hostname == NULL)
  56   {
  57     hostname= "localhost";
  58   }
  59
  60   if (hostname[0] == '/')
  61   {
  62     port = 0;
  63   }
  64   else if (not port)
  65   {
  66     port= MEMCACHED_DEFAULT_PORT;
  67   }
  68
  69
  70   /* Increment count for hosts */
  71   count= 1;
  72   if (ptr != NULL)
  73   {
  74     count+= memcached_server_list_count(ptr);
  75   }
  76
  77   new_host_list= (memcached_server_write_instance_st)realloc(ptr, sizeof(memcached_server_st) * count);
  78   if (not new_host_list)
  79   {
  80     *error= memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  81     return NULL;
  82   }
  83
  84   memcached_string_t _hostname= { memcached_string_make_from_cstr(hostname) };
  85   /* @todo Check return type */
  86   if (not __server_create_with(NULL, &new_host_list[count-1], _hostname, port, weight, port ? MEMCACHED_CONNECTION_TCP : MEMCACHED_CONNECTION_UNIX_SOCKET))
  87   {
  88     *error= memcached_set_errno(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  89     return NULL;
  90   }
  91
  92 #if 0
  93   // Handset allocated since
  94   new_host_list->options.is_allocated= true;
  95 #endif
  96
  97   /* Backwards compatibility hack */
  98   memcached_servers_set_count(new_host_list, count);
  99
 100   *error= MEMCACHED_SUCCESS;
 101   return new_host_list;
 102 }
 103
 104 memcached_server_list_st
 105 memcached_server_list_append(memcached_server_list_st ptr,
 106                              const char *hostname, in_port_t port,
 107                              memcached_return_t *error)
 108 {
 109   return memcached_server_list_append_with_weight(ptr, hostname, port, 0, error);
 110 }
 111
 112 uint32_t memcached_server_list_count(const memcached_server_list_st self)
 113 {
 114   return (self == NULL)
 115     ? 0
 116     : self->number_of_hosts;
 117 }
 118
 119 memcached_server_st *memcached_server_list(const memcached_st *self)
 120 {
 121   if (self)
 122   {
 123     return self->servers;
 124   }
 125
 126   return NULL;
 127 }
 128
 129 void memcached_server_list_set(memcached_st *self, memcached_server_st *list)
 130 {
 131   self->servers= list;
 132 }
 133
 134 void memcached_server_list_free(memcached_server_list_st self)
 135 {
 136   if (not self)
 137     return;
 138
 139   for (uint32_t x= 0; x < memcached_server_list_count(self); x++)
 140   {
 141     assert_msg(not memcached_is_allocated(&self[x]), "You have called memcached_server_list_free(), but you did not pass it a valid memcached_server_list_st");
 142     __server_free(&self[x]);
 143   }
 144
 145   libmemcached_free(self->root, self);
 146 }