includes/libs/objectcache/APCBagOStuff.php

   1 <?php
   2 /**
   3  * Object caching using PHP's APC accelerator.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Cache
  22  */
  23
  24 /**
  25  * This is a wrapper for APC's shared memory functions
  26  *
  27  * @ingroup Cache
  28  */
  29 class APCBagOStuff extends BagOStuff {
  30         /**
  31          * @var string String to append to each APC key. This may be changed
  32          *  whenever the handling of values is changed, to prevent existing code
  33          *  from encountering older values which it cannot handle.
  34          **/
  35         const KEY_SUFFIX = ':1';
  36
  37         public function get( $key, &$casToken = null, $flags = 0 ) {
  38                 $val = apc_fetch( $key . self::KEY_SUFFIX );
  39
  40                 $casToken = $val;
  41
  42                 return $val;
  43         }
  44
  45         public function set( $key, $value, $exptime = 0 ) {
  46                 apc_store( $key . self::KEY_SUFFIX, $value, $exptime );
  47
  48                 return true;
  49         }
  50
  51         public function delete( $key ) {
  52                 apc_delete( $key . self::KEY_SUFFIX );
  53
  54                 return true;
  55         }
  56
  57         public function incr( $key, $value = 1 ) {
  58                 return apc_inc( $key . self::KEY_SUFFIX, $value );
  59         }
  60
  61         public function decr( $key, $value = 1 ) {
  62                 return apc_dec( $key . self::KEY_SUFFIX, $value );
  63         }
  64 }