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