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