+memcached_return memcached_mdelete_by_key(memcached_st *ptr,
+ char *master_key, size_t master_key_length,
+ char **key, size_t *key_length,
+ unsigned int number_of_keys,
+ time_t expiration)
+{
+ size_t send_length;
+ memcached_return rc= MEMCACHED_SUCCESS;
+ char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
+ unsigned int master_server_key= 0;
+ unsigned int x;
+
+ LIBMEMCACHED_MEMCACHED_DELETE_START();
+
+ if (ptr->hosts == NULL || ptr->number_of_hosts == 0)
+ return MEMCACHED_NO_SERVERS;
+
+ if (master_key && master_key_length)
+ master_server_key= memcached_generate_hash(ptr, master_key, master_key_length);
+
+ for (x= 0; x < number_of_keys; x++)
+ {
+ unsigned int server_key;
+
+ if (master_key && master_key_length)
+ server_key= master_server_key;
+ else
+ server_key= memcached_generate_hash(ptr, key[x], key_length[x]);
+
+ if (expiration)
+ send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
+ "delete %.*s %llu\r\n", (int)(key_length[x]), key[x],
+ (unsigned long long)expiration);
+ else
+ send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
+ "delete %.*s\r\n", (int)(key_length[x]), key[x]);
+
+ (void)memcached_do(ptr, server_key, buffer, send_length, 0);
+ }
+
+ return MEMCACHED_BUFFERED;