From 03a57655f3cdc6c0b9f717f4466a4547247729d3 Mon Sep 17 00:00:00 2001
From: Mike Davies <mike@gigasports.com>
Date: Wed, 29 Feb 2012 17:52:36 -0500
Subject: Added support for Wincache when running CI on Windows boxes

Wincache is directly analogous to APC, except with less problems on a Windows environment. Performance wise they are almost identical (for user mode caching at least).

Need to have the Wincache PHP module downloaded from http://www.iis.net/download/wincacheforphp.
---
 system/libraries/Cache/Cache.php                  |   2 +-
 system/libraries/Cache/drivers/Cache_wincache.php | 155 ++++++++++++++++++++++
 2 files changed, 156 insertions(+), 1 deletion(-)
 create mode 100644 system/libraries/Cache/drivers/Cache_wincache.php

(limited to 'system/libraries')

diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index 2e78a6660..e9cc1101c 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -39,7 +39,7 @@
 class CI_Cache extends CI_Driver_Library {
 
 	protected $valid_drivers 	= array(
-		'cache_apc', 'cache_file', 'cache_memcached', 'cache_dummy'
+		'cache_apc', 'cache_file', 'cache_memcached', 'cache_dummy', 'cache_wincache'
 	);
 
 	protected $_cache_path		= NULL;		// Path of cache files (if file-based cache)
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
new file mode 100644
index 000000000..a1b1bb3de
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -0,0 +1,155 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		Mike Murkovic
+ * @copyright
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 2.0
+ * @filesource	
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Wincache Caching Class
+ *
+ * Read more about Wincache functions here:
+ * http://www.php.net/manual/en/ref.wincache.php
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		Mike Murkovic
+ * @link		
+ */
+
+class CI_Cache_wincache extends CI_Driver {
+
+	/**
+	 * Get 
+	 *
+	 * Look for a value in the cache.  If it exists, return the data 
+	 * if not, return FALSE
+	 *
+	 * @param 	string	
+	 * @return 	mixed		value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		if ($data = wincache_ucache_get($id))
+        {
+            return $data;
+        }
+        return FALSE;
+	}
+
+	// ------------------------------------------------------------------------	
+	
+	/**
+	 * Cache Save
+	 *
+	 * @param 	string		Unique Key
+	 * @param 	mixed		Data to store
+	 * @param 	int			Length of time (in seconds) to cache the data
+	 *
+	 * @return 	boolean		true on success/false on failure
+	 */
+	public function save($id, $data, $ttl = 60)
+	{
+		return wincache_ucache_set($id, $data, $ttl);
+	}
+	
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param 	mixed		unique identifier of the item in the cache
+	 * @param 	boolean		true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return wincache_ucache_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return 	boolean		false on failure/true on success
+	 */
+	public function clean()
+	{
+		return wincache_ucache_clear();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return 	mixed		array on success, false on failure
+	 */
+	 public function cache_info()
+	 {
+		 return wincache_ucache_info(true);
+	 }
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param 	mixed		key to get cache metadata on
+	 * @return 	mixed		array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+        if ($stored = wincache_ucache_info(false, $id))
+        {
+            $age = $stored['ucache_entries'][1]['age_seconds'];
+            $ttl = $stored['ucache_entries'][1]['ttl_seconds'];
+            $hitcount = $stored['ucache_entries'][1]['hitcount'];
+
+            return array(
+                'expire'    => $ttl - $age,
+                'hitcount'  => $hitcount,
+                'age'       => $age,
+                'ttl'       => $ttl
+            );
+        }
+        return false;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if WinCache is available on this system, bail if it isn't.
+	 */
+	public function is_supported()
+	{
+		if ( ! extension_loaded('wincache') )
+		{
+            log_message('error', 'The Wincache PHP extension must be loaded to use Wincache Cache.');
+            return FALSE;
+		}
+		
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	
+}
+// End Class
+
+/* End of file Cache_wincache.php */
+/* Location: ./system/libraries/Cache/drivers/Cache_wincache.php */
-- 
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