library/Zend/Cache/Backend/ZendServer/ShMem.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_Cache
  17  * @subpackage Zend_Cache_Backend
  18  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  19  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  20  * @version    $Id: ShMem.php 16971 2009-07-22 18:05:45Z mikaelkael $
  21  */
  22
  23
  24 /** @see Zend_Cache_Backend_Interface */
  25 require_once 'Zend/Cache/Backend/Interface.php';
  26
  27 /** @see Zend_Cache_Backend_ZendServer */
  28 require_once 'Zend/Cache/Backend/ZendServer.php';
  29
  30
  31 /**
  32  * @package    Zend_Cache
  33  * @subpackage Zend_Cache_Backend
  34  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  35  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  36  */
  37 class Zend_Cache_Backend_ZendServer_ShMem extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
  38 {
  39     /**
  40      * Constructor
  41      *
  42      * @param  array $options associative array of options
  43      * @throws Zend_Cache_Exception
  44      */
  45     public function __construct(array $options = array())
  46     {
  47         if (!function_exists('zend_shm_cache_store')) {
  48             Zend_Cache::throwException('Zend_Cache_ZendServer_ShMem backend has to be used within Zend Server environment.');
  49         }
  50         parent::__construct($options);
  51     }
  52
  53     /**
  54      * Store data
  55      *
  56      * @param mixed  $data        Object to store
  57      * @param string $id          Cache id
  58      * @param int    $timeToLive  Time to live in seconds
  59      *
  60      */
  61     protected function _store($data, $id, $timeToLive)
  62     {
  63         if (zend_shm_cache_store($this->_options['namespace'] . '::' . $id,
  64                                   $data,
  65                                   $timeToLive) === false) {
  66             $this->_log('Store operation failed.');
  67             return false;
  68         }
  69         return true;
  70     }
  71
  72     /**
  73      * Fetch data
  74      *
  75      * @param string $id          Cache id
  76      */
  77     protected function _fetch($id)
  78     {
  79         return zend_shm_cache_fetch($this->_options['namespace'] . '::' . $id);
  80     }
  81
  82     /**
  83      * Unset data
  84      *
  85      * @param string $id          Cache id
  86      * @return boolean true if no problem
  87      */
  88     protected function _unset($id)
  89     {
  90         return zend_shm_cache_delete($this->_options['namespace'] . '::' . $id);
  91     }
  92
  93     /**
  94      * Clear cache
  95      */
  96     protected function _clear()
  97     {
  98         zend_shm_cache_clear($this->_options['namespace']);
  99     }
 100 }