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 memcached_free(memcached_st *ptr)
  48 {
  49   /* If we have anything open, lets close it now */
  50   memcached_quit(ptr);
  51   server_list_free(ptr, ptr->hosts);
  52   memcached_result_free(&ptr->result);
  53
  54   if (ptr->on_cleanup)
  55     ptr->on_cleanup(ptr);
  56
  57   if (ptr->continuum)
  58     ptr->call_free(ptr, ptr->continuum);
  59
  60   if (memcached_is_allocated(ptr))
  61   {
  62     ptr->call_free(ptr, ptr);
  63   }
  64   else
  65   {
  66     ptr->options.is_initialized= false;
  67   }
  68 }
  69
  70 /*
  71   clone is the destination, while source is the structure to clone.
  72   If source is NULL the call is the same as if a memcached_create() was
  73   called.
  74 */
  75 memcached_st *memcached_clone(memcached_st *clone, memcached_st *source)
  76 {
  77   memcached_return_t rc= MEMCACHED_SUCCESS;
  78   memcached_st *new_clone;
  79
  80   if (source == NULL)
  81     return memcached_create(clone);
  82
  83   if (clone && memcached_is_allocated(clone))
  84   {
  85     return NULL;
  86   }
  87
  88   new_clone= memcached_create(clone);
  89
  90   if (new_clone == NULL)
  91     return NULL;
  92
  93   new_clone->flags= source->flags;
  94   new_clone->send_size= source->send_size;
  95   new_clone->recv_size= source->recv_size;
  96   new_clone->poll_timeout= source->poll_timeout;
  97   new_clone->connect_timeout= source->connect_timeout;
  98   new_clone->retry_timeout= source->retry_timeout;
  99   new_clone->distribution= source->distribution;
 100   new_clone->hash= source->hash;
 101   new_clone->distribution_hash= source->distribution_hash;
 102   new_clone->user_data= source->user_data;
 103
 104   new_clone->snd_timeout= source->snd_timeout;
 105   new_clone->rcv_timeout= source->rcv_timeout;
 106
 107   new_clone->on_clone= source->on_clone;
 108   new_clone->on_cleanup= source->on_cleanup;
 109   new_clone->call_free= source->call_free;
 110   new_clone->call_malloc= source->call_malloc;
 111   new_clone->call_realloc= source->call_realloc;
 112   new_clone->call_calloc= source->call_calloc;
 113   new_clone->get_key_failure= source->get_key_failure;
 114   new_clone->delete_trigger= source->delete_trigger;
 115   new_clone->server_failure_limit= source->server_failure_limit;
 116   new_clone->io_msg_watermark= source->io_msg_watermark;
 117   new_clone->io_bytes_watermark= source->io_bytes_watermark;
 118   new_clone->io_key_prefetch= source->io_key_prefetch;
 119   new_clone->number_of_replicas= source->number_of_replicas;
 120
 121   if (source->hosts)
 122     rc= memcached_server_push(new_clone, source->hosts);
 123
 124   if (rc != MEMCACHED_SUCCESS)
 125   {
 126     memcached_free(new_clone);
 127
 128     return NULL;
 129   }
 130
 131
 132   if (source->prefix_key[0] != 0)
 133   {
 134     strcpy(new_clone->prefix_key, source->prefix_key);
 135     new_clone->prefix_key_length= source->prefix_key_length;
 136   }
 137
 138   rc= run_distribution(new_clone);
 139
 140   if (rc != MEMCACHED_SUCCESS)
 141   {
 142     memcached_free(new_clone);
 143
 144     return NULL;
 145   }
 146
 147   if (source->on_clone)
 148     source->on_clone(source, new_clone);
 149
 150   return new_clone;
 151 }
 152
 153 void *memcached_get_user_data(memcached_st *ptr)
 154 {
 155   return ptr->user_data;
 156 }
 157
 158 void *memcached_set_user_data(memcached_st *ptr, void *data)
 159 {
 160   void *ret= ptr->user_data;
 161   ptr->user_data= data;
 162
 163   return ret;
 164 }