Introduce XCache and eAccelerator, make some small changes to the abstract, forgot a period in the command for r9537 :(

git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@9538 89ea8834-ac86-4346-8a33-228a782c2dd0

phpBB/includes/acm/acm_xcache.php

@@ -0,0 +1,106 @@
+<?php
+/**
+*
+* @package acm
+* @version $Id$
+* @copyright (c) 2005, 2009 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+// Include the abstract base
+if (!class_exists('acm_memory'))
+{
+	require("${phpbb_root_path}includes/acm/acm_memory.$phpEx");
+}
+
+/**
+* ACM for XCache
+* @package acm
+*/
+class acm extends acm_memory
+{
+	function acm()
+	{
+		// Call the parent constructor
+		parent::acm_memory();
+	}
+
+	/**
+	* Purge cache data
+	*
+	* @return void
+	*/
+	function purge()
+	{
+		$n = xcache_count(XC_TYPE_VAR);
+
+		for ($i = 0; $i < $n; $i++)
+		{
+			xcache_clear_cache(XC_TYPE_VAR, $i);
+		}
+
+		parent::purge();
+	}
+
+	/**
+	* Fetch an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return mixed Cached data
+	*/
+	function _read($var)
+	{
+		return xcache_get($var);
+	}
+
+	/**
+	* Store data in the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @param mixed $data Data to store
+	* @param int $ttl Time-to-live of cached data
+	* @return bool True if the operation succeeded
+	*/
+	function _write($var, $data, $ttl = 2592000)
+	{
+		return xcache_set($var, $data, $ttl);
+	}
+
+	/**
+	* Remove an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return bool True if the operation succeeded
+	*/
+	function _delete($var)
+	{
+		return xcache_unset($var);
+	}
+
+	/**
+	* Check if a cache var exists
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return bool True if it exists, otherwise false
+	*/	
+	function _isset($var)
+	{
+		// Most caches don't need to check
+		return xcache_isset($var);
+	}
+}
+
+?>