git.m6w6.name Git - awesomized/libmemcached/blob - lib/memcached_delete.c

   1 #include "common.h"
   2
   3 memcached_return memcached_delete(memcached_st *ptr, char *key, size_t key_length,
   4                                   time_t expiration)
   5 {
   6   size_t send_length, sent_length;
   7   memcached_return rc;
   8   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
   9   unsigned int server_key;
  10
  11   LIBMEMCACHED_MEMCACHED_DELETE_START();
  12
  13   rc= memcached_connect(ptr);
  14
  15   if (rc != MEMCACHED_SUCCESS)
  16     return rc;
  17
  18   server_key= memcached_generate_hash(key, key_length) % ptr->number_of_hosts;
  19
  20   if (expiration)
  21     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  22                           "delete %.*s %llu\r\n", (int)key_length, key,
  23                           (unsigned long long)expiration);
  24   else
  25     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  26                           "delete %.*s\r\n", (int)key_length, key);
  27
  28   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
  29   {
  30     rc= MEMCACHED_WRITE_FAILURE;
  31     goto error;
  32   }
  33
  34   sent_length= send(ptr->hosts[server_key].fd, buffer, send_length, 0);
  35
  36   if (sent_length == -1 || sent_length != send_length)
  37   {
  38     rc= MEMCACHED_WRITE_FAILURE;
  39     goto error;
  40   }
  41
  42   rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
  43
  44   if (rc == MEMCACHED_DELETED)
  45     rc= MEMCACHED_SUCCESS;
  46
  47   LIBMEMCACHED_MEMCACHED_DELETE_END();
  48
  49 error:
  50   return rc;
  51 }