diff options
Diffstat (limited to 'system/libraries/Cache/drivers')
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_apc.php | 80 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_dummy.php | 55 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_file.php | 117 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_memcached.php | 178 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_wincache.php | 162 |
5 files changed, 409 insertions, 183 deletions
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php index f750e6cb7..c85034f95 100644 --- a/system/libraries/Cache/drivers/Cache_apc.php +++ b/system/libraries/Cache/drivers/Cache_apc.php @@ -2,70 +2,80 @@ /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 - * @filesource + * @filesource */ -// ------------------------------------------------------------------------ - /** - * CodeIgniter APC Caching Class + * CodeIgniter APC Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team - * @link + * @author EllisLab Dev Team + * @link */ - class CI_Cache_apc extends CI_Driver { /** - * Get + * Get * - * Look for a value in the cache. If it exists, return the data + * 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 + * @param string + * @return mixed value that is stored/FALSE on failure */ public function get($id) { $data = apc_fetch($id); - return (is_array($data)) ? $data[0] : FALSE; + return is_array($data) ? $data[0] : FALSE; } - // ------------------------------------------------------------------------ - + // ------------------------------------------------------------------------ + /** * Cache Save * - * @param string Unique Key - * @param mixed Data to store - * @param int Length of time (in seconds) to cache the data + * @param string Unique Key + * @param mixed Data to store + * @param int Length of time (in seconds) to cache the data * - * @return boolean true on success/false on failure + * @return bool true on success/false on failure */ public function save($id, $data, $ttl = 60) { + $ttl = (int) $ttl; return apc_store($id, array($data, time(), $ttl), $ttl); } - + // ------------------------------------------------------------------------ /** * Delete from Cache * - * @param mixed unique identifier of the item in the cache - * @param boolean true on success/false on failure + * @param mixed unique identifier of the item in the cache + * @return bool true on success/false on failure */ public function delete($id) { @@ -77,7 +87,7 @@ class CI_Cache_apc extends CI_Driver { /** * Clean the cache * - * @return boolean false on failure/true on success + * @return bool false on failure/true on success */ public function clean() { @@ -89,8 +99,8 @@ class CI_Cache_apc extends CI_Driver { /** * Cache Info * - * @param string user/filehits - * @return mixed array on success, false on failure + * @param string user/filehits + * @return mixed array on success, false on failure */ public function cache_info($type = NULL) { @@ -102,8 +112,8 @@ class CI_Cache_apc extends CI_Driver { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed array on success/false on failure + * @param mixed key to get cache metadata on + * @return mixed array on success/false on failure */ public function get_metadata($id) { @@ -129,23 +139,21 @@ class CI_Cache_apc extends CI_Driver { * is_supported() * * Check to see if APC is available on this system, bail if it isn't. + * + * @return bool */ public function is_supported() { - if ( ! extension_loaded('apc') OR ini_get('apc.enabled') != "1") + if ( ! extension_loaded('apc') OR ! (bool) @ini_get('apc.enabled')) { log_message('error', 'The APC PHP extension must be loaded to use APC Cache.'); return FALSE; } - + return TRUE; } - // ------------------------------------------------------------------------ - - } -// End Class /* End of file Cache_apc.php */ -/* Location: ./system/libraries/Cache/drivers/Cache_apc.php */ +/* Location: ./system/libraries/Cache/drivers/Cache_apc.php */
\ No newline at end of file diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php index b11b5b8fc..3f2b4b956 100644 --- a/system/libraries/Cache/drivers/Cache_dummy.php +++ b/system/libraries/Cache/drivers/Cache_dummy.php @@ -2,29 +2,38 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ -// ------------------------------------------------------------------------ - /** * CodeIgniter Dummy Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @link */ - class CI_Cache_dummy extends CI_Driver { /** @@ -32,8 +41,8 @@ class CI_Cache_dummy extends CI_Driver { * * Since this is the dummy class, it's always going to return FALSE. * - * @param string - * @return Boolean FALSE + * @param string + * @return bool FALSE */ public function get($id) { @@ -45,11 +54,10 @@ class CI_Cache_dummy extends CI_Driver { /** * Cache Save * - * @param string Unique Key - * @param mixed Data to store - * @param int Length of time (in seconds) to cache the data - * - * @return boolean TRUE, Simulating success + * @param string Unique Key + * @param mixed Data to store + * @param int Length of time (in seconds) to cache the data + * @return bool TRUE, Simulating success */ public function save($id, $data, $ttl = 60) { @@ -61,8 +69,8 @@ class CI_Cache_dummy extends CI_Driver { /** * Delete from Cache * - * @param mixed unique identifier of the item in the cache - * @param boolean TRUE, simulating success + * @param mixed unique identifier of the item in the cache + * @return bool TRUE, simulating success */ public function delete($id) { @@ -74,7 +82,7 @@ class CI_Cache_dummy extends CI_Driver { /** * Clean the cache * - * @return boolean TRUE, simulating success + * @return bool TRUE, simulating success */ public function clean() { @@ -86,8 +94,8 @@ class CI_Cache_dummy extends CI_Driver { /** * Cache Info * - * @param string user/filehits - * @return boolean FALSE + * @param string user/filehits + * @return bool FALSE */ public function cache_info($type = NULL) { @@ -99,8 +107,8 @@ class CI_Cache_dummy extends CI_Driver { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return boolean FALSE + * @param mixed key to get cache metadata on + * @return bool FALSE */ public function get_metadata($id) { @@ -113,17 +121,14 @@ class CI_Cache_dummy extends CI_Driver { * Is this caching driver supported on the system? * Of course this one is. * - * @return TRUE; + * @return bool TRUE */ public function is_supported() { return TRUE; } - // ------------------------------------------------------------------------ - } -// End Class /* End of file Cache_dummy.php */ /* Location: ./system/libraries/Cache/drivers/Cache_dummy.php */
\ No newline at end of file diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php index c50043660..ec4195278 100644 --- a/system/libraries/Cache/drivers/Cache_file.php +++ b/system/libraries/Cache/drivers/Cache_file.php @@ -2,43 +2,55 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 - * @filesource + * @filesource */ -// ------------------------------------------------------------------------ - /** - * CodeIgniter Memcached Caching Class + * CodeIgniter Memcached Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team - * @link + * @author EllisLab Dev Team + * @link */ - class CI_Cache_file extends CI_Driver { + /** + * Directory in which to save cache files + * + * @var string + */ protected $_cache_path; /** - * Constructor + * Initialize file-based cache */ public function __construct() { $CI =& get_instance(); $CI->load->helper('file'); - $path = $CI->config->item('cache_path'); - $this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path; } @@ -47,8 +59,8 @@ class CI_Cache_file extends CI_Driver { /** * Fetch from cache * - * @param mixed unique key id - * @return mixed data on success/false on failure + * @param mixed unique key id + * @return mixed data on success/false on failure */ public function get($id) { @@ -56,16 +68,15 @@ class CI_Cache_file extends CI_Driver { { return FALSE; } - - $data = read_file($this->_cache_path.$id); - $data = unserialize($data); - + + $data = unserialize(read_file($this->_cache_path.$id)); + if (time() > $data['time'] + $data['ttl']) { unlink($this->_cache_path.$id); return FALSE; } - + return $data['data']; } @@ -74,24 +85,24 @@ class CI_Cache_file extends CI_Driver { /** * Save into cache * - * @param string unique key - * @param mixed data to store - * @param int length of time (in seconds) the cache is valid - * - Default is 60 seconds - * @return boolean true on success/false on failure + * @param string unique key + * @param mixed data to store + * @param int length of time (in seconds) the cache is valid + * - Default is 60 seconds + * @return bool true on success/false on failure */ public function save($id, $data, $ttl = 60) - { + { $contents = array( - 'time' => time(), - 'ttl' => $ttl, - 'data' => $data - ); - + 'time' => time(), + 'ttl' => $ttl, + 'data' => $data + ); + if (write_file($this->_cache_path.$id, serialize($contents))) { - @chmod($this->_cache_path.$id, 0777); - return TRUE; + @chmod($this->_cache_path.$id, 0660); + return TRUE; } return FALSE; @@ -102,12 +113,12 @@ class CI_Cache_file extends CI_Driver { /** * Delete from Cache * - * @param mixed unique identifier of item in cache - * @return boolean true on success/false on failure + * @param mixed unique identifier of item in cache + * @return bool true on success/false on failure */ public function delete($id) { - return unlink($this->_cache_path.$id); + return file_exists($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE; } // ------------------------------------------------------------------------ @@ -115,8 +126,8 @@ class CI_Cache_file extends CI_Driver { /** * Clean the Cache * - * @return boolean false on failure/true on success - */ + * @return bool false on failure/true on success + */ public function clean() { return delete_files($this->_cache_path); @@ -129,8 +140,8 @@ class CI_Cache_file extends CI_Driver { * * Not supported by file-based caching * - * @param string user/filehits - * @return mixed FALSE + * @param string user/filehits + * @return mixed FALSE */ public function cache_info($type = NULL) { @@ -142,8 +153,8 @@ class CI_Cache_file extends CI_Driver { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed FALSE on failure, array on success. + * @param mixed key to get cache metadata on + * @return mixed FALSE on failure, array on success. */ public function get_metadata($id) { @@ -151,26 +162,24 @@ class CI_Cache_file extends CI_Driver { { return FALSE; } - - $data = read_file($this->_cache_path.$id); - $data = unserialize($data); - + + $data = unserialize(read_file($this->_cache_path.$id)); + if (is_array($data)) { - $data = $data['data']; $mtime = filemtime($this->_cache_path.$id); - if ( ! isset($data['ttl'])) + if ( ! isset($data['data']['ttl'])) { return FALSE; } return array( - 'expire' => $mtime + $data['ttl'], - 'mtime' => $mtime + 'expire' => $mtime + $data['data']['ttl'], + 'mtime' => $mtime ); } - + return FALSE; } @@ -180,17 +189,15 @@ class CI_Cache_file extends CI_Driver { * Is supported * * In the file driver, check to see that the cache directory is indeed writable - * - * @return boolean + * + * @return bool */ public function is_supported() { return is_really_writable($this->_cache_path); } - // ------------------------------------------------------------------------ } -// End Class /* End of file Cache_file.php */ /* Location: ./system/libraries/Cache/drivers/Cache_file.php */
\ No newline at end of file diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php index 747842091..813df4b1c 100644 --- a/system/libraries/Cache/drivers/Cache_memcached.php +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -2,54 +2,71 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 - * @filesource + * @filesource */ -// ------------------------------------------------------------------------ - /** - * CodeIgniter Memcached Caching Class + * CodeIgniter Memcached Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team - * @link + * @author EllisLab Dev Team + * @link */ - class CI_Cache_memcached extends CI_Driver { - private $_memcached; // Holds the memcached object - - protected $_memcache_conf = array( - 'default' => array( - 'default_host' => '127.0.0.1', - 'default_port' => 11211, - 'default_weight' => 1 - ) - ); + /** + * Holds the memcached object + * + * @var object + */ + protected $_memcached; - // ------------------------------------------------------------------------ + /** + * Memcached configuration + * + * @var array + */ + protected $_memcache_conf = array( + 'default' => array( + 'default_host' => '127.0.0.1', + 'default_port' => 11211, + 'default_weight' => 1 + ) + ); /** * Fetch from cache * - * @param mixed unique key id - * @return mixed data on success/false on failure - */ + * @param mixed unique key id + * @return mixed data on success/false on failure + */ public function get($id) - { + { $data = $this->_memcached->get($id); - - return (is_array($data)) ? $data[0] : FALSE; + + return is_array($data) ? $data[0] : FALSE; } // ------------------------------------------------------------------------ @@ -57,32 +74,32 @@ class CI_Cache_memcached extends CI_Driver { /** * Save * - * @param string unique identifier - * @param mixed data being cached - * @param int time to live - * @return boolean true on success, false on failure + * @param string unique identifier + * @param mixed data being cached + * @param int time to live + * @return bool true on success, false on failure */ public function save($id, $data, $ttl = 60) { - if (get_class($this->_memcached) == 'Memcached') + if (get_class($this->_memcached) === 'Memcached') { return $this->_memcached->set($id, array($data, time(), $ttl), $ttl); } - else if (get_class($this->_memcached) == 'Memcache') + elseif (get_class($this->_memcached) === 'Memcache') { return $this->_memcached->set($id, array($data, time(), $ttl), 0, $ttl); } - + return FALSE; } // ------------------------------------------------------------------------ - + /** * Delete from Cache * - * @param mixed key to be deleted. - * @return boolean true on success, false on failure + * @param mixed key to be deleted. + * @return bool true on success, false on failure */ public function delete($id) { @@ -90,11 +107,11 @@ class CI_Cache_memcached extends CI_Driver { } // ------------------------------------------------------------------------ - + /** * Clean the Cache * - * @return boolean false on failure/true on success + * @return bool false on failure/true on success */ public function clean() { @@ -106,21 +123,20 @@ class CI_Cache_memcached extends CI_Driver { /** * Cache Info * - * @param null type not supported in memcached - * @return mixed array on success, false on failure + * @return mixed array on success, false on failure */ - public function cache_info($type = NULL) + public function cache_info() { return $this->_memcached->getStats(); } // ------------------------------------------------------------------------ - + /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed FALSE on failure, array on success. + * @param mixed key to get cache metadata on + * @return mixed FALSE on failure, array on success. */ public function get_metadata($id) { @@ -144,11 +160,14 @@ class CI_Cache_memcached extends CI_Driver { /** * Setup memcached. + * + * @return bool */ - private function _setup_memcached() + protected function _setup_memcached() { // Try to load memcached server info from the config file. $CI =& get_instance(); + if ($CI->config->load('memcached', TRUE, TRUE)) { if (is_array($CI->config->config['memcached'])) @@ -158,61 +177,86 @@ class CI_Cache_memcached extends CI_Driver { foreach ($CI->config->config['memcached'] as $name => $conf) { $this->_memcache_conf[$name] = $conf; - } - } + } + } + } + + if (class_exists('Memcached')) + { + $this->_memcached = new Memcached(); + } + elseif (class_exists('Memcache')) + { + $this->_memcached = new Memcache(); + } + else + { + log_message('error', 'Failed to create object for Memcached Cache; extension not loaded?'); + return FALSE; } - - $this->_memcached = new Memcached(); foreach ($this->_memcache_conf as $name => $cache_server) { if ( ! array_key_exists('hostname', $cache_server)) { - $cache_server['hostname'] = $this->_default_options['default_host']; + $cache_server['hostname'] = $this->_memcache_conf['default']['default_host']; } - + if ( ! array_key_exists('port', $cache_server)) { - $cache_server['port'] = $this->_default_options['default_port']; + $cache_server['port'] = $this->_memcache_conf['default']['default_port']; } - + if ( ! array_key_exists('weight', $cache_server)) { - $cache_server['weight'] = $this->_default_options['default_weight']; + $cache_server['weight'] = $this->_memcache_conf['default']['default_weight']; + } + + if (get_class($this->_memcached) == 'Memcache') + { + // Third parameter is persistance and defaults to TRUE. + $this->_memcached->addServer( + $cache_server['hostname'], + $cache_server['port'], + TRUE, + $cache_server['weight'] + ); + } + else + { + $this->_memcached->addServer( + $cache_server['hostname'], + $cache_server['port'], + $cache_server['weight'] + ); } - - $this->_memcached->addServer( - $cache_server['hostname'], $cache_server['port'], $cache_server['weight'] - ); } + + return TRUE; } // ------------------------------------------------------------------------ - /** * Is supported * * Returns FALSE if memcached is not supported on the system. * If it is, we setup the memcached object & return TRUE + * + * @return bool */ public function is_supported() { - if ( ! extension_loaded('memcached')) + if ( ! extension_loaded('memcached') && ! extension_loaded('memcache')) { log_message('error', 'The Memcached Extension must be loaded to use Memcached Cache.'); - return FALSE; } - - $this->_setup_memcached(); - return TRUE; - } - // ------------------------------------------------------------------------ + return $this->_setup_memcached(); + } } -// End Class /* End of file Cache_memcached.php */ /* Location: ./system/libraries/Cache/drivers/Cache_memcached.php */
\ No newline at end of file diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php new file mode 100644 index 000000000..74048d564 --- /dev/null +++ b/system/libraries/Cache/drivers/Cache_wincache.php @@ -0,0 +1,162 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. + * + * @package CodeIgniter + * @author EllisLab Dev Team + * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) + * @link http://codeigniter.com + * @since Version 3.0 + * @filesource + */ + +/** + * CodeIgniter Wincache Caching Class + * + * Read more about Wincache functions here: + * http://www.php.net/manual/en/ref.wincache.php + * + * @package CodeIgniter + * @subpackage Libraries + * @category Core + * @author Mike Murkovic + * @link + */ +class CI_Cache_wincache extends CI_Driver { + + /** + * Get + * + * Look for a value in the cache. If it exists, return the data, + * if not, return FALSE + * + * @param string + * @return mixed value that is stored/FALSE on failure + */ + public function get($id) + { + $success = FALSE; + $data = wincache_ucache_get($id, $success); + + // Success returned by reference from wincache_ucache_get() + return ($success) ? $data : FALSE; + } + + // ------------------------------------------------------------------------ + + /** + * Cache Save + * + * @param string Unique Key + * @param mixed Data to store + * @param int Length of time (in seconds) to cache the data + * @return bool true on success/false on failure + */ + public function save($id, $data, $ttl = 60) + { + return wincache_ucache_set($id, $data, $ttl); + } + + // ------------------------------------------------------------------------ + + /** + * Delete from Cache + * + * @param mixed unique identifier of the item in the cache + * @return bool true on success/false on failure + */ + public function delete($id) + { + return wincache_ucache_delete($id); + } + + // ------------------------------------------------------------------------ + + /** + * Clean the cache + * + * @return bool false on failure/true on success + */ + public function clean() + { + return wincache_ucache_clear(); + } + + // ------------------------------------------------------------------------ + + /** + * Cache Info + * + * @return mixed array on success, false on failure + */ + public function cache_info() + { + return wincache_ucache_info(TRUE); + } + + // ------------------------------------------------------------------------ + + /** + * Get Cache Metadata + * + * @param mixed key to get cache metadata on + * @return mixed array on success/false on failure + */ + public function get_metadata($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. + * + * @return bool + */ + 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 of file Cache_wincache.php */ +/* Location: ./system/libraries/Cache/drivers/Cache_wincache.php */
\ No newline at end of file |