<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Memory\Container;
/**
* Memory value container interface
*/
interface ContainerInterface
{
/**
* Get string value reference
*
* _Must_ be used for value access before PHP v 5.2
* or _may_ be used for performance considerations
*
* @return &string
*/
public function &getRef();
/**
* Signal, that value is updated by external code.
*
* Should be used together with getRef()
*/
public function touch();
/**
* Lock object in memory.
*/
public function lock();
/**
* Unlock object
*/
public function unlock();
/**
* Return true if object is locked
*
* @return bool
*/
public function isLocked();
}