includes/libs/objectcache/APCUBagOStuff.php

   1 <?php
   2 /**
   3  * Object caching using PHP's APCU 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 APCU's shared memory functions
  26  *
  27  * @ingroup Cache
  28  */
  29 class APCUBagOStuff extends APCBagOStuff {
  30         /**
  31          * Constructor
  32          *
  33          * Available parameters are:
  34          *   - nativeSerialize:     If true, pass objects to apcu_store(), and trust it
  35          *                          to serialize them correctly. If false, serialize
  36          *                          all values in PHP.
  37          *
  38          * @param array $params
  39          */
  40         public function __construct( array $params = [] ) {
  41                 parent::__construct( $params );
  42         }
  43
  44         protected function doGet( $key, $flags = 0 ) {
  45                 return $this->getUnserialize(
  46                         apcu_fetch( $key . self::KEY_SUFFIX )
  47                 );
  48         }
  49
  50         public function set( $key, $value, $exptime = 0, $flags = 0 ) {
  51                 apcu_store(
  52                         $key . self::KEY_SUFFIX,
  53                         $this->setSerialize( $value ),
  54                         $exptime
  55                 );
  56
  57                 return true;
  58         }
  59
  60         public function delete( $key ) {
  61                 apcu_delete( $key . self::KEY_SUFFIX );
  62
  63                 return true;
  64         }
  65
  66         public function incr( $key, $value = 1 ) {
  67                 /**
  68                  * @todo When we only support php 7 or higher remove this hack
  69                  *
  70                  * https://github.com/krakjoe/apcu/issues/166
  71                  */
  72                 if ( apcu_exists( $key . self::KEY_SUFFIX ) ) {
  73                         return apcu_inc( $key . self::KEY_SUFFIX, $value );
  74                 } else {
  75                         return false;
  76                 }
  77         }
  78
  79         public function decr( $key, $value = 1 ) {
  80                 /**
  81                  * @todo When we only support php 7 or higher remove this hack
  82                  *
  83                  * https://github.com/krakjoe/apcu/issues/166
  84                  */
  85                 if ( apcu_exists( $key . self::KEY_SUFFIX ) ) {
  86                         return apcu_dec( $key . self::KEY_SUFFIX, $value );
  87                 } else {
  88                         return false;
  89                 }
  90         }
  91 }