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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Backend
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: ShMem.php 18951 2009-11-12 16:26:19Z alexander $
*/
/** @see Zend_Cache_Backend_Interface */
require_once 'Zend/Cache/Backend/Interface.php';
/** @see Zend_Cache_Backend_ZendServer */
require_once 'Zend/Cache/Backend/ZendServer.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Backend
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Backend_ZendServer_ShMem extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
{
/**
* Constructor
*
* @param array $options associative array of options
* @throws Zend_Cache_Exception
*/
public function __construct(array $options = array())
{
if (!function_exists('zend_shm_cache_store')) {
Zend_Cache::throwException('Zend_Cache_ZendServer_ShMem backend has to be used within Zend Server environment.');
}
parent::__construct($options);
}
/**
* Store data
*
* @param mixed $data Object to store
* @param string $id Cache id
* @param int $timeToLive Time to live in seconds
*
*/
protected function _store($data, $id, $timeToLive)
{
if (zend_shm_cache_store($this->_options['namespace'] . '::' . $id,
$data,
$timeToLive) === false) {
$this->_log('Store operation failed.');
return false;
}
return true;
}
/**
* Fetch data
*
* @param string $id Cache id
*/
protected function _fetch($id)
{
return zend_shm_cache_fetch($this->_options['namespace'] . '::' . $id);
}
/**
* Unset data
*
* @param string $id Cache id
* @return boolean true if no problem
*/
protected function _unset($id)
{
return zend_shm_cache_delete($this->_options['namespace'] . '::' . $id);
}
/**
* Clear cache
*/
protected function _clear()
{
zend_shm_cache_clear($this->_options['namespace']);
}
}
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