From 9329b16ab13f3a4caf107df358c3c58bda2dcd8a Mon Sep 17 00:00:00 2001
From: Igor Wiedler <igor@wiedler.ch>
Date: Wed, 3 Nov 2010 18:35:31 +0100
Subject: [task/acm-refactor] Refactor the ACM classes to have a common
 interface.

They are now refered to as cache drivers rather than ACM classes. The
additional utility functions from the original cache class have been
moved to the cache_service. The class loader is now instantiated without
a cache instance and passed one as soon as it is constructed to allow
autoloading the cache classes.

PHPBB3-9983
---
 phpBB/includes/cache/driver/eaccelerator.php | 113 +++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 phpBB/includes/cache/driver/eaccelerator.php

(limited to 'phpBB/includes/cache/driver/eaccelerator.php')

diff --git a/phpBB/includes/cache/driver/eaccelerator.php b/phpBB/includes/cache/driver/eaccelerator.php
new file mode 100644
index 0000000000..b2dd37dbb5
--- /dev/null
+++ b/phpBB/includes/cache/driver/eaccelerator.php
@@ -0,0 +1,113 @@
+<?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;
+}
+
+/**
+* ACM for eAccelerator
+* @package acm
+* @todo Missing locks from destroy() talk with David
+*/
+class phpbb_cache_driver_eaccelerator extends phpbb_cache_driver_memory
+{
+	var $extension = 'eaccelerator';
+	var $function = 'eaccelerator_get';
+
+	var $serialize_header = '#phpbb-serialized#';
+
+	/**
+	* Purge cache data
+	*
+	* @return void
+	*/
+	function purge()
+	{
+		foreach (eaccelerator_list_keys() as $var)
+		{
+			// @todo Check why the substr()
+			// @todo Only unset vars matching $this->key_prefix
+			eaccelerator_rm(substr($var['name'], 1));
+		}
+
+		parent::purge();
+	}
+
+	/**
+	 * Perform cache garbage collection
+	 *
+	 * @return void
+	 */
+	function tidy()
+	{
+		eaccelerator_gc();
+
+		set_config('cache_last_gc', time(), true);
+	}
+
+	/**
+	* Fetch an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return mixed Cached data
+	*/
+	function _read($var)
+	{
+		$result = eaccelerator_get($this->key_prefix . $var);
+
+		if ($result === null)
+		{
+			return false;
+		}
+
+		// Handle serialized objects
+		if (is_string($result) && strpos($result, $this->serialize_header . 'O:') === 0)
+		{
+			$result = unserialize(substr($result, strlen($this->serialize_header)));
+		}
+
+		return $result;
+	}
+
+	/**
+	* 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)
+	{
+		// Serialize objects and make them easy to detect
+		$data = (is_object($data)) ? $this->serialize_header . serialize($data) : $data;
+
+		return eaccelerator_put($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 eaccelerator_rm($this->key_prefix . $var);
+	}
+}
-- 
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