Merge branch 'feature/ChrisTX/acm-wincache' into develop-olympus

* feature/ChrisTX/acm-wincache:
  [feature/acm-wincache] Adding caching module for WinCache's User Cache.

phpBB/includes/acm/acm_wincache.php

@@ -0,0 +1,84 @@
+<?php
+/**
+*
+* @package acm
+* @copyright (c) 2010 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 WinCache
+* @package acm
+*/
+class acm extends acm_memory
+{
+	var $extension = 'wincache';
+
+	/**
+	* Purge cache data
+	*
+	* @return void
+	*/
+	function purge()
+	{
+		wincache_ucache_clear();
+
+		parent::purge();
+	}
+
+	/**
+	* Fetch an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return mixed Cached data
+	*/
+	function _read($var)
+	{
+		$success = false;
+		$result = wincache_ucache_get($this->key_prefix . $var, $success);
+
+		return ($success) ? $result : false;
+	}
+
+	/**
+	* 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, $ttl = 2592000)
+	{
+		return wincache_ucache_set($this->key_prefix . $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 wincache_ucache_delete($this->key_prefix . $var);
+	}
+}