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