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   char to_write;
   7   size_t send_length, sent_length;
   8   memcached_return rc;
   9   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  10   unsigned int server_key;
  11
  12   LIBMEMCACHED_MEMCACHED_DELETE_START();
  13
  14   server_key= memcached_generate_hash(ptr, key, key_length);
  15
  16   if ((rc= memcached_connect(ptr, server_key)) != MEMCACHED_SUCCESS)
  17     return rc;
  18
  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   if ((ptr->flags & MEM_NO_BLOCK))
  35     to_write= 0;
  36   else
  37     to_write= 1;
  38
  39   if ((sent_length= memcached_io_write(ptr, server_key, buffer, send_length, to_write)) == -1)
  40   {
  41     memcached_quit_server(ptr, server_key);
  42     rc= MEMCACHED_WRITE_FAILURE;
  43     goto error;
  44   }
  45
  46   if ((ptr->flags & MEM_NO_BLOCK))
  47   {
  48     rc= MEMCACHED_SUCCESS;
  49     memcached_server_response_increment(ptr, server_key);
  50   }
  51   else
  52   {
  53     rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
  54     if (rc == MEMCACHED_DELETED)
  55       rc= MEMCACHED_SUCCESS;
  56   }
  57
  58   LIBMEMCACHED_MEMCACHED_DELETE_END();
  59
  60 error:
  61   return rc;
  62 }