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 #if 0
  25   memcached_set_purging(ptr, false);
  26   memcached_set_processing_input(ptr, false);
  27 #endif
  28
  29   memcached_set_memory_allocators(ptr, NULL, NULL, NULL, NULL);
  30
  31   if (! memcached_result_create(ptr, &ptr->result))
  32   {
  33     memcached_free(ptr);
  34     return NULL;
  35   }
  36   ptr->poll_timeout= MEMCACHED_DEFAULT_TIMEOUT;
  37   ptr->connect_timeout= MEMCACHED_DEFAULT_TIMEOUT;
  38   ptr->retry_timeout= 0;
  39   ptr->distribution= MEMCACHED_DISTRIBUTION_MODULA;
  40
  41
  42   ptr->send_size= -1;
  43   ptr->recv_size= -1;
  44
  45   /* TODO, Document why we picked these defaults */
  46   ptr->io_msg_watermark= 500;
  47   ptr->io_bytes_watermark= 65 * 1024;
  48
  49   WATCHPOINT_ASSERT_INITIALIZED(&ptr->result);
  50
  51   return ptr;
  52 }
  53
  54 void server_list_free(memcached_st *ptr, memcached_server_st *servers)
  55 {
  56   uint32_t x;
  57
  58   if (servers == NULL)
  59     return;
  60
  61   for (x= 0; x < memcached_servers_count(servers); x++)
  62   {
  63     if (servers[x].address_info)
  64     {
  65       freeaddrinfo(servers[x].address_info);
  66       servers[x].address_info= NULL;
  67     }
  68   }
  69
  70   if (ptr)
  71   {
  72     ptr->call_free(ptr, servers);
  73   }
  74   else
  75   {
  76     free(servers);
  77   }
  78 }
  79
  80 void memcached_servers_reset(memcached_st *ptr)
  81 {
  82   server_list_free(ptr, memcached_server_list(ptr));
  83
  84   memcached_server_list_set(ptr, NULL);
  85   ptr->number_of_hosts= 0;
  86   ptr->last_disconnected_server= NULL;
  87   ptr->server_failure_limit= 0;
  88 }
  89
  90 void memcached_free(memcached_st *ptr)
  91 {
  92   /* If we have anything open, lets close it now */
  93   memcached_quit(ptr);
  94   server_list_free(ptr, memcached_server_list(ptr));
  95   memcached_result_free(&ptr->result);
  96
  97   if (ptr->on_cleanup)
  98     ptr->on_cleanup(ptr);
  99
 100   if (ptr->continuum)
 101     ptr->call_free(ptr, ptr->continuum);
 102
 103   if (memcached_is_allocated(ptr))
 104   {
 105     ptr->call_free(ptr, ptr);
 106   }
 107 }
 108
 109 /*
 110   clone is the destination, while source is the structure to clone.
 111   If source is NULL the call is the same as if a memcached_create() was
 112   called.
 113 */
 114 memcached_st *memcached_clone(memcached_st *clone, memcached_st *source)
 115 {
 116   memcached_return_t rc= MEMCACHED_SUCCESS;
 117   memcached_st *new_clone;
 118
 119   if (source == NULL)
 120     return memcached_create(clone);
 121
 122   if (clone && memcached_is_allocated(clone))
 123   {
 124     return NULL;
 125   }
 126
 127   new_clone= memcached_create(clone);
 128
 129   if (new_clone == NULL)
 130     return NULL;
 131
 132   new_clone->flags= source->flags;
 133   new_clone->send_size= source->send_size;
 134   new_clone->recv_size= source->recv_size;
 135   new_clone->poll_timeout= source->poll_timeout;
 136   new_clone->connect_timeout= source->connect_timeout;
 137   new_clone->retry_timeout= source->retry_timeout;
 138   new_clone->distribution= source->distribution;
 139   new_clone->hash= source->hash;
 140   new_clone->distribution_hash= source->distribution_hash;
 141   new_clone->user_data= source->user_data;
 142
 143   new_clone->snd_timeout= source->snd_timeout;
 144   new_clone->rcv_timeout= source->rcv_timeout;
 145
 146   new_clone->on_clone= source->on_clone;
 147   new_clone->on_cleanup= source->on_cleanup;
 148   new_clone->call_free= source->call_free;
 149   new_clone->call_malloc= source->call_malloc;
 150   new_clone->call_realloc= source->call_realloc;
 151   new_clone->call_calloc= source->call_calloc;
 152   new_clone->get_key_failure= source->get_key_failure;
 153   new_clone->delete_trigger= source->delete_trigger;
 154   new_clone->server_failure_limit= source->server_failure_limit;
 155   new_clone->io_msg_watermark= source->io_msg_watermark;
 156   new_clone->io_bytes_watermark= source->io_bytes_watermark;
 157   new_clone->io_key_prefetch= source->io_key_prefetch;
 158   new_clone->number_of_replicas= source->number_of_replicas;
 159
 160   if (memcached_server_list(source))
 161     rc= memcached_server_push(new_clone, memcached_server_list(source));
 162
 163   if (rc != MEMCACHED_SUCCESS)
 164   {
 165     memcached_free(new_clone);
 166
 167     return NULL;
 168   }
 169
 170
 171   if (source->prefix_key[0] != 0)
 172   {
 173     strcpy(new_clone->prefix_key, source->prefix_key);
 174     new_clone->prefix_key_length= source->prefix_key_length;
 175   }
 176
 177   rc= run_distribution(new_clone);
 178
 179   if (rc != MEMCACHED_SUCCESS)
 180   {
 181     memcached_free(new_clone);
 182
 183     return NULL;
 184   }
 185
 186   if (source->on_clone)
 187     source->on_clone(source, new_clone);
 188
 189   return new_clone;
 190 }
 191
 192 void *memcached_get_user_data(memcached_st *ptr)
 193 {
 194   return ptr->user_data;
 195 }
 196
 197 void *memcached_set_user_data(memcached_st *ptr, void *data)
 198 {
 199   void *ret= ptr->user_data;
 200   ptr->user_data= data;
 201
 202   return ret;
 203 }