git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/memcached.c

   1 /*
   2   Memcached library
   3 */
   4 #include "common.h"
   5
   6 memcached_st *memcached_create(memcached_st *ptr)
   7 {
   8   if (ptr == NULL)
   9   {
  10     ptr= (memcached_st *)calloc(1, sizeof(memcached_st));
  11
  12     if (! ptr)
  13     {
  14       return NULL; /*  MEMCACHED_MEMORY_ALLOCATION_FAILURE */
  15     }
  16
  17     ptr->options.is_allocated= true;
  18   }
  19   else
  20   {
  21     memset(ptr, 0, sizeof(memcached_st));
  22   }
  23
  24   ptr->options.is_initialized= true;
  25
  26   memcached_set_memory_allocators(ptr, NULL, NULL, NULL, NULL);
  27
  28   if (! memcached_result_create(ptr, &ptr->result))
  29   {
  30     memcached_free(ptr);
  31     return NULL;
  32   }
  33   ptr->poll_timeout= MEMCACHED_DEFAULT_TIMEOUT;
  34   ptr->connect_timeout= MEMCACHED_DEFAULT_TIMEOUT;
  35   ptr->retry_timeout= 0;
  36   ptr->distribution= MEMCACHED_DISTRIBUTION_MODULA;
  37
  38   /* TODO, Document why we picked these defaults */
  39   ptr->io_msg_watermark= 500;
  40   ptr->io_bytes_watermark= 65 * 1024;
  41
  42   WATCHPOINT_ASSERT_INITIALIZED(&ptr->result);
  43
  44   return ptr;
  45 }
  46
  47 void server_list_free(memcached_st *ptr, memcached_server_st *servers)
  48 {
  49   uint32_t x;
  50
  51   if (servers == NULL)
  52     return;
  53
  54   for (x= 0; x < memcached_servers_count(servers); x++)
  55     if (servers[x].address_info)
  56     {
  57       freeaddrinfo(servers[x].address_info);
  58       servers[x].address_info= NULL;
  59     }
  60
  61   if (ptr)
  62   {
  63     ptr->call_free(ptr, servers);
  64   }
  65   else
  66     free(servers);
  67 }
  68
  69 void memcached_servers_reset(memcached_st *ptr)
  70 {
  71   server_list_free(ptr, ptr->hosts);
  72
  73   ptr->hosts= NULL;
  74   ptr->number_of_hosts= 0;
  75   ptr->last_disconnected_server= NULL;
  76   ptr->server_failure_limit= 0;
  77 }
  78
  79 void memcached_free(memcached_st *ptr)
  80 {
  81   /* If we have anything open, lets close it now */
  82   memcached_quit(ptr);
  83   server_list_free(ptr, ptr->hosts);
  84   memcached_result_free(&ptr->result);
  85
  86   if (ptr->on_cleanup)
  87     ptr->on_cleanup(ptr);
  88
  89   if (ptr->continuum)
  90     ptr->call_free(ptr, ptr->continuum);
  91
  92   if (memcached_is_allocated(ptr))
  93   {
  94     ptr->call_free(ptr, ptr);
  95   }
  96   else
  97   {
  98     ptr->options.is_initialized= false;
  99   }
 100 }
 101
 102 /*
 103   clone is the destination, while source is the structure to clone.
 104   If source is NULL the call is the same as if a memcached_create() was
 105   called.
 106 */
 107 memcached_st *memcached_clone(memcached_st *clone, memcached_st *source)
 108 {
 109   memcached_return_t rc= MEMCACHED_SUCCESS;
 110   memcached_st *new_clone;
 111
 112   if (source == NULL)
 113     return memcached_create(clone);
 114
 115   if (clone && memcached_is_allocated(clone))
 116   {
 117     return NULL;
 118   }
 119
 120   new_clone= memcached_create(clone);
 121
 122   if (new_clone == NULL)
 123     return NULL;
 124
 125   new_clone->flags= source->flags;
 126   new_clone->send_size= source->send_size;
 127   new_clone->recv_size= source->recv_size;
 128   new_clone->poll_timeout= source->poll_timeout;
 129   new_clone->connect_timeout= source->connect_timeout;
 130   new_clone->retry_timeout= source->retry_timeout;
 131   new_clone->distribution= source->distribution;
 132   new_clone->hash= source->hash;
 133   new_clone->distribution_hash= source->distribution_hash;
 134   new_clone->user_data= source->user_data;
 135
 136   new_clone->snd_timeout= source->snd_timeout;
 137   new_clone->rcv_timeout= source->rcv_timeout;
 138
 139   new_clone->on_clone= source->on_clone;
 140   new_clone->on_cleanup= source->on_cleanup;
 141   new_clone->call_free= source->call_free;
 142   new_clone->call_malloc= source->call_malloc;
 143   new_clone->call_realloc= source->call_realloc;
 144   new_clone->call_calloc= source->call_calloc;
 145   new_clone->get_key_failure= source->get_key_failure;
 146   new_clone->delete_trigger= source->delete_trigger;
 147   new_clone->server_failure_limit= source->server_failure_limit;
 148   new_clone->io_msg_watermark= source->io_msg_watermark;
 149   new_clone->io_bytes_watermark= source->io_bytes_watermark;
 150   new_clone->io_key_prefetch= source->io_key_prefetch;
 151   new_clone->number_of_replicas= source->number_of_replicas;
 152
 153   if (source->hosts)
 154     rc= memcached_server_push(new_clone, source->hosts);
 155
 156   if (rc != MEMCACHED_SUCCESS)
 157   {
 158     memcached_free(new_clone);
 159
 160     return NULL;
 161   }
 162
 163
 164   if (source->prefix_key[0] != 0)
 165   {
 166     strcpy(new_clone->prefix_key, source->prefix_key);
 167     new_clone->prefix_key_length= source->prefix_key_length;
 168   }
 169
 170   rc= run_distribution(new_clone);
 171
 172   if (rc != MEMCACHED_SUCCESS)
 173   {
 174     memcached_free(new_clone);
 175
 176     return NULL;
 177   }
 178
 179   if (source->on_clone)
 180     source->on_clone(source, new_clone);
 181
 182   return new_clone;
 183 }
 184
 185 void *memcached_get_user_data(memcached_st *ptr)
 186 {
 187   return ptr->user_data;
 188 }
 189
 190 void *memcached_set_user_data(memcached_st *ptr, void *data)
 191 {
 192   void *ret= ptr->user_data;
 193   ptr->user_data= data;
 194
 195   return ret;
 196 }