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