git.m6w6.name Git - m6w6/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   {
  56     if (servers[x].address_info)
  57     {
  58       freeaddrinfo(servers[x].address_info);
  59       servers[x].address_info= NULL;
  60     }
  61   }
  62
  63   if (ptr)
  64   {
  65     ptr->call_free(ptr, servers);
  66   }
  67   else
  68   {
  69     free(servers);
  70   }
  71 }
  72
  73 void memcached_servers_reset(memcached_st *ptr)
  74 {
  75   server_list_free(ptr, ptr->hosts);
  76
  77   ptr->hosts= NULL;
  78   ptr->number_of_hosts= 0;
  79   ptr->last_disconnected_server= NULL;
  80   ptr->server_failure_limit= 0;
  81 }
  82
  83 void memcached_free(memcached_st *ptr)
  84 {
  85   /* If we have anything open, lets close it now */
  86   memcached_quit(ptr);
  87   server_list_free(ptr, ptr->hosts);
  88   memcached_result_free(&ptr->result);
  89
  90   if (ptr->on_cleanup)
  91     ptr->on_cleanup(ptr);
  92
  93   if (ptr->continuum)
  94     ptr->call_free(ptr, ptr->continuum);
  95
  96   if (memcached_is_allocated(ptr))
  97   {
  98     ptr->call_free(ptr, ptr);
  99   }
 100   else
 101   {
 102     ptr->options.is_initialized= false;
 103   }
 104 }
 105
 106 /*
 107   clone is the destination, while source is the structure to clone.
 108   If source is NULL the call is the same as if a memcached_create() was
 109   called.
 110 */
 111 memcached_st *memcached_clone(memcached_st *clone, memcached_st *source)
 112 {
 113   memcached_return_t rc= MEMCACHED_SUCCESS;
 114   memcached_st *new_clone;
 115
 116   if (source == NULL)
 117     return memcached_create(clone);
 118
 119   if (clone && memcached_is_allocated(clone))
 120   {
 121     return NULL;
 122   }
 123
 124   new_clone= memcached_create(clone);
 125
 126   if (new_clone == NULL)
 127     return NULL;
 128
 129   new_clone->flags= source->flags;
 130   new_clone->send_size= source->send_size;
 131   new_clone->recv_size= source->recv_size;
 132   new_clone->poll_timeout= source->poll_timeout;
 133   new_clone->connect_timeout= source->connect_timeout;
 134   new_clone->retry_timeout= source->retry_timeout;
 135   new_clone->distribution= source->distribution;
 136   new_clone->hash= source->hash;
 137   new_clone->distribution_hash= source->distribution_hash;
 138   new_clone->user_data= source->user_data;
 139
 140   new_clone->snd_timeout= source->snd_timeout;
 141   new_clone->rcv_timeout= source->rcv_timeout;
 142
 143   new_clone->on_clone= source->on_clone;
 144   new_clone->on_cleanup= source->on_cleanup;
 145   new_clone->call_free= source->call_free;
 146   new_clone->call_malloc= source->call_malloc;
 147   new_clone->call_realloc= source->call_realloc;
 148   new_clone->call_calloc= source->call_calloc;
 149   new_clone->get_key_failure= source->get_key_failure;
 150   new_clone->delete_trigger= source->delete_trigger;
 151   new_clone->server_failure_limit= source->server_failure_limit;
 152   new_clone->io_msg_watermark= source->io_msg_watermark;
 153   new_clone->io_bytes_watermark= source->io_bytes_watermark;
 154   new_clone->io_key_prefetch= source->io_key_prefetch;
 155   new_clone->number_of_replicas= source->number_of_replicas;
 156
 157   if (source->hosts)
 158     rc= memcached_server_push(new_clone, source->hosts);
 159
 160   if (rc != MEMCACHED_SUCCESS)
 161   {
 162     memcached_free(new_clone);
 163
 164     return NULL;
 165   }
 166
 167
 168   if (source->prefix_key[0] != 0)
 169   {
 170     strcpy(new_clone->prefix_key, source->prefix_key);
 171     new_clone->prefix_key_length= source->prefix_key_length;
 172   }
 173
 174   rc= run_distribution(new_clone);
 175
 176   if (rc != MEMCACHED_SUCCESS)
 177   {
 178     memcached_free(new_clone);
 179
 180     return NULL;
 181   }
 182
 183   if (source->on_clone)
 184     source->on_clone(source, new_clone);
 185
 186   return new_clone;
 187 }
 188
 189 void *memcached_get_user_data(memcached_st *ptr)
 190 {
 191   return ptr->user_data;
 192 }
 193
 194 void *memcached_set_user_data(memcached_st *ptr, void *data)
 195 {
 196   void *ret= ptr->user_data;
 197   ptr->user_data= data;
 198
 199   return ret;
 200 }