diff options
author | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2007-06-21 16:41:02 +0000 |
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committer | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2007-06-21 16:41:02 +0000 |
commit | a5fe68e002632c190ffbd85167671ed4d4961135 (patch) | |
tree | ae57f94603111507c50cb3c212a03bedf8f7dc5a /wp-includes/cache.php | |
parent | 4e38776b5b68c61a4593a84340f4654200f7568e (diff) | |
download | wordpress-mu-a5fe68e002632c190ffbd85167671ed4d4961135.tar.gz wordpress-mu-a5fe68e002632c190ffbd85167671ed4d4961135.tar.xz wordpress-mu-a5fe68e002632c190ffbd85167671ed4d4961135.zip |
WP Merge to WP 2.2.1
git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@1005 7be80a69-a1ef-0310-a953-fb0f7c49ff36
Diffstat (limited to 'wp-includes/cache.php')
-rw-r--r-- | wp-includes/cache.php | 916 |
1 files changed, 458 insertions, 458 deletions
diff --git a/wp-includes/cache.php b/wp-includes/cache.php index 6901a6b..695a986 100644 --- a/wp-includes/cache.php +++ b/wp-includes/cache.php @@ -1,458 +1,458 @@ -<?php
-function wp_cache_add($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
- $data = unserialize(serialize($data));
-
- return $wp_object_cache->add($key, $data, $flag, $expire);
-}
-
-function wp_cache_close() {
- global $wp_object_cache;
-
- if ( ! isset($wp_object_cache) )
- return;
- return $wp_object_cache->save();
-}
-
-function wp_cache_delete($id, $flag = '') {
- global $wp_object_cache;
-
- return $wp_object_cache->delete($id, $flag);
-}
-
-function wp_cache_flush() {
- global $wp_object_cache;
-
- return $wp_object_cache->flush();
-}
-
-function wp_cache_get($id, $flag = '') {
- global $wp_object_cache;
-
- return $wp_object_cache->get($id, $flag);
-}
-
-function wp_cache_init() {
- $GLOBALS['wp_object_cache'] =& new WP_Object_Cache();
-}
-
-function wp_cache_replace($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
- $data = unserialize(serialize($data));
-
- return $wp_object_cache->replace($key, $data, $flag, $expire);
-}
-
-function wp_cache_set($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
- $data = unserialize(serialize($data));
-
- return $wp_object_cache->set($key, $data, $flag, $expire);
-}
-
-define('CACHE_SERIAL_HEADER', "<?php\n/*");
-define('CACHE_SERIAL_FOOTER', "*/\n?".">");
-
-class WP_Object_Cache {
- var $cache_dir;
- var $cache_enabled = false;
- var $expiration_time = 900;
- var $flock_filename = 'wp_object_cache.lock';
- var $mutex;
- var $cache = array ();
- var $dirty_objects = array ();
- var $non_existant_objects = array ();
- var $global_groups = array ('users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details');
- var $blog_id;
- var $cold_cache_hits = 0;
- var $warm_cache_hits = 0;
- var $cache_misses = 0;
- var $secret = '';
-
- function acquire_lock() {
- // Acquire a write lock.
- $this->mutex = @fopen($this->cache_dir.$this->flock_filename, 'w');
- if ( false == $this->mutex)
- return false;
- flock($this->mutex, LOCK_EX);
- return true;
- }
-
- function key($key, $group) {
- global $blog_id;
-
- if ( empty($group) )
- $group = 'default';
-
- if (false !== array_search($group, $this->global_groups))
- $prefix = '';
- else
- $prefix = $blog_id . '-';
-
- if( '' != $key )
- $key = '-' . $key;
-
- return "$prefix$group$key";
- }
-
-
- function add($id, $data, $group = 'default', $expire = '') {
- if (empty ($group))
- $group = 'default';
-
- if (false !== $this->get($id, $group, false))
- return false;
-
- return $this->set($id, $data, $group, $expire);
- }
-
- function delete($id, $group = 'default', $force = false) {
- $hash = $this->key($id, $group);
- if (empty ($group))
- $group = 'default';
-
- if (!$force && false === $this->get($id, $group, false))
- return false;
-
- unset ($this->cache[$hash]);
- $this->non_existant_objects[$hash] = true;
- $this->dirty_objects[$this->key( '', $group )][] = $id;
- return true;
- }
-
- function flush() {
- if ( !$this->cache_enabled )
- return true;
-
- if ( ! $this->acquire_lock() )
- return false;
-
- $this->rm_cache_dir();
- $this->cache = array ();
- $this->dirty_objects = array ();
- $this->non_existant_objects = array ();
-
- $this->release_lock();
-
- return true;
- }
-
- function get($id, $group = 'default', $count_hits = true) {
- $hash = $this->key($id, $group);
- $group_key = $this->key( '', $group );
- if (empty ($group))
- $group = 'default';
-
- if (isset ($this->cache[$hash])) {
- if ($count_hits)
- $this->warm_cache_hits += 1;
- return $this->cache[$hash];
- }
-
- if (isset ($this->non_existant_objects[$hash]))
- return false;
-
- // If caching is not enabled, we have to fall back to pulling from the DB.
- if (!$this->cache_enabled) {
- if (!isset ($this->cache[$group_key]))
- $this->load_group_from_db($group_key);
-
- if (isset ($this->cache[$hash])) {
- $this->cold_cache_hits += 1;
- return $this->cache[$hash];
- }
-
- $this->non_existant_objects[$hash] = true;
- $this->cache_misses += 1;
- return false;
- }
-
- $cache_file = $this->cache_dir.$this->get_group_dir($group_key)."/".$this->hash($hash).'.php';
- if (!file_exists($cache_file)) {
- $this->non_existant_objects[$hash] = true;
- $this->cache_misses += 1;
- return false;
- }
-
- // If the object has expired, remove it from the cache and return false to force
- // a refresh.
- $now = time();
- if ((filemtime($cache_file) + $this->expiration_time) <= $now) {
- $this->cache_misses += 1;
- $this->delete($id, $group, true);
- return false;
- }
-
- $this->cache[$hash] = unserialize(base64_decode(substr(@ file_get_contents($cache_file), strlen(CACHE_SERIAL_HEADER), -strlen(CACHE_SERIAL_FOOTER))));
- if (false === $this->cache[$hash])
- $this->cache[$hash] = '';
-
- $this->cold_cache_hits += 1;
- return $this->cache[$hash];
- }
-
- function get_group_dir($group) {
- if (false !== array_search($group, $this->global_groups))
- return $group;
-
- return "{$this->blog_id}/$group";
- }
-
- function hash($data) {
- if ( function_exists('hash_hmac') ) {
- return hash_hmac('md5', $data, $this->secret);
- } else {
- return md5($data . $this->secret);
- }
- }
-
- function load_group_from_db($group) {
- global $wpdb;
-
- if ('category' == $group) {
- $this->cache['category'] = array ();
- if ($dogs = $wpdb->get_results("SELECT * FROM $wpdb->categories")) {
- foreach ($dogs as $catt) {
- $this->cache['category'][$catt->cat_ID] = $catt;
- $this->cache[$this->key( $catt->cat_ID, 'category' )] = $catt;
- }
- }
- }
-
- }
-
- function make_group_dir($group, $perms) {
- $group_dir = $this->get_group_dir($group);
- $make_dir = '';
- foreach (split('/', $group_dir) as $subdir) {
- $make_dir .= "$subdir/";
- if (!file_exists($this->cache_dir.$make_dir)) {
- if (! @ mkdir($this->cache_dir.$make_dir))
- break;
- @ chmod($this->cache_dir.$make_dir, $perms);
- }
-
- if (!file_exists($this->cache_dir.$make_dir."index.php")) {
- $file_perms = $perms & 0000666;
- @ touch($this->cache_dir.$make_dir."index.php");
- @ chmod($this->cache_dir.$make_dir."index.php", $file_perms);
- }
- }
-
- return $this->cache_dir."$group_dir/";
- }
-
- function rm_cache_dir() {
- $dir = $this->cache_dir;
- $dir = rtrim($dir, DIRECTORY_SEPARATOR);
- $top_dir = $dir;
- $stack = array($dir);
- $index = 0;
-
- while ($index < count($stack)) {
- # Get indexed directory from stack
- $dir = $stack[$index];
-
- $dh = @ opendir($dir);
- if (!$dh)
- return false;
-
- while (($file = @ readdir($dh)) !== false) {
- if ($file == '.' or $file == '..')
- continue;
-
- if (@ is_dir($dir . DIRECTORY_SEPARATOR . $file))
- $stack[] = $dir . DIRECTORY_SEPARATOR . $file;
- else if (@ is_file($dir . DIRECTORY_SEPARATOR . $file))
- @ unlink($dir . DIRECTORY_SEPARATOR . $file);
- }
-
- $index++;
- }
-
- $stack = array_reverse($stack); // Last added dirs are deepest
- foreach($stack as $dir) {
- if ( $dir != $top_dir)
- @ rmdir($dir);
- }
-
- }
-
- function release_lock() {
- // Release write lock.
- flock($this->mutex, LOCK_UN);
- fclose($this->mutex);
- }
-
- function replace($id, $data, $group = 'default', $expire = '') {
- if (empty ($group))
- $group = 'default';
-
- if (false === $this->get($id, $group, false))
- return false;
-
- return $this->set($id, $data, $group, $expire);
- }
-
- function set($id, $data, $group = 'default', $expire = '') {
- $hash = $this->key($id, $group);
- if (empty ($group))
- $group = 'default';
-
- if (NULL == $data)
- $data = '';
-
- $this->cache[$hash] = $data;
- unset ($this->non_existant_objects[$hash]);
- $this->dirty_objects[$this->key( '', $group )][] = $id;
-
- return true;
- }
-
- function save() {
- //$this->stats();
-
- if (!$this->cache_enabled)
- return true;
-
- if (empty ($this->dirty_objects))
- return true;
-
- // Give the new dirs the same perms as wp-content.
- $stat = stat(ABSPATH.'wp-content');
- $dir_perms = $stat['mode'] & 0007777; // Get the permission bits.
- $file_perms = $dir_perms & 0000666; // Remove execute bits for files.
-
- // Make the base cache dir.
- if (!file_exists($this->cache_dir)) {
- if (! @ mkdir($this->cache_dir))
- return false;
- @ chmod($this->cache_dir, $dir_perms);
- }
-
- if (!file_exists($this->cache_dir."index.php")) {
- @ touch($this->cache_dir."index.php");
- @ chmod($this->cache_dir."index.php", $file_perms);
- }
-
- if ( ! $this->acquire_lock() )
- return false;
-
- // Loop over dirty objects and save them.
- $errors = 0;
- foreach ($this->dirty_objects as $group => $ids) {
- $group_dir = $this->make_group_dir($group, $dir_perms);
-
- $ids = array_unique($ids);
- foreach ($ids as $id) {
- $cache_file = $group_dir.$this->hash($group.'-'.$id).'.php';
-
- // Remove the cache file if the key is not set.
- if (!isset ($this->cache[$group.'-'.$id])) {
- if (file_exists($cache_file))
- @ unlink($cache_file);
- continue;
- }
-
- $temp_file = tempnam($group_dir, 'tmp');
- $serial = CACHE_SERIAL_HEADER.base64_encode(serialize($this->cache[$group.'-'.$id])).CACHE_SERIAL_FOOTER;
- $fd = @fopen($temp_file, 'w');
- if ( false === $fd ) {
- $errors++;
- continue;
- }
- fputs($fd, $serial);
- fclose($fd);
- if (!@ rename($temp_file, $cache_file)) {
- if (!@ copy($temp_file, $cache_file))
- $errors++;
- @ unlink($temp_file);
- }
- @ chmod($cache_file, $file_perms);
- }
- }
-
- $this->dirty_objects = array();
-
- $this->release_lock();
-
- if ( $errors )
- return false;
-
- return true;
- }
-
- function stats() {
- echo "<p>";
- echo "<strong>Cold Cache Hits:</strong> {$this->cold_cache_hits}<br/>";
- echo "<strong>Warm Cache Hits:</strong> {$this->warm_cache_hits}<br/>";
- echo "<strong>Cache Misses:</strong> {$this->cache_misses}<br/>";
- echo "</p>";
-
- foreach ($this->cache as $group => $cache) {
- echo "<p>";
- echo "<strong>Group:</strong> $group<br/>";
- echo "<strong>Cache:</strong>";
- echo "<pre>";
- print_r($cache);
- echo "</pre>";
- if (isset ($this->dirty_objects[$group])) {
- echo "<strong>Dirty Objects:</strong>";
- echo "<pre>";
- print_r(array_unique($this->dirty_objects[$group]));
- echo "</pre>";
- echo "</p>";
- }
- }
- }
-
- function WP_Object_Cache() {
- return $this->__construct();
- }
-
- function __construct() {
- global $blog_id;
-
- register_shutdown_function(array(&$this, "__destruct"));
-
- if (defined('DISABLE_CACHE'))
- return;
-
- if ( ! defined('ENABLE_CACHE') )
- return;
-
- // Disable the persistent cache if safe_mode is on.
- if ( ini_get('safe_mode') && ! defined('ENABLE_CACHE') )
- return;
-
- if (defined('CACHE_PATH'))
- $this->cache_dir = CACHE_PATH;
- else
- // Using the correct separator eliminates some cache flush errors on Windows
- $this->cache_dir = ABSPATH.'wp-content'.DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR;
-
- if (is_writable($this->cache_dir) && is_dir($this->cache_dir)) {
- $this->cache_enabled = true;
- } else {
- if (is_writable(ABSPATH.'wp-content')) {
- $this->cache_enabled = true;
- }
- }
-
- if (defined('CACHE_EXPIRATION_TIME'))
- $this->expiration_time = CACHE_EXPIRATION_TIME;
-
- if ( defined('WP_SECRET') )
- $this->secret = WP_SECRET;
- else
- $this->secret = DB_PASSWORD . DB_USER . DB_NAME . DB_HOST . ABSPATH;
-
- $this->blog_id = $this->hash($blog_id);
- }
-
- function __destruct() {
- $this->save();
- return true;
- }
-}
-?>
+<?php +function wp_cache_add($key, $data, $flag = '', $expire = 0) { + global $wp_object_cache; + $data = unserialize(serialize($data)); + + return $wp_object_cache->add($key, $data, $flag, $expire); +} + +function wp_cache_close() { + global $wp_object_cache; + + if ( ! isset($wp_object_cache) ) + return; + return $wp_object_cache->save(); +} + +function wp_cache_delete($id, $flag = '') { + global $wp_object_cache; + + return $wp_object_cache->delete($id, $flag); +} + +function wp_cache_flush() { + global $wp_object_cache; + + return $wp_object_cache->flush(); +} + +function wp_cache_get($id, $flag = '') { + global $wp_object_cache; + + return $wp_object_cache->get($id, $flag); +} + +function wp_cache_init() { + $GLOBALS['wp_object_cache'] =& new WP_Object_Cache(); +} + +function wp_cache_replace($key, $data, $flag = '', $expire = 0) { + global $wp_object_cache; + $data = unserialize(serialize($data)); + + return $wp_object_cache->replace($key, $data, $flag, $expire); +} + +function wp_cache_set($key, $data, $flag = '', $expire = 0) { + global $wp_object_cache; + $data = unserialize(serialize($data)); + + return $wp_object_cache->set($key, $data, $flag, $expire); +} + +define('CACHE_SERIAL_HEADER', "<?php\n/*"); +define('CACHE_SERIAL_FOOTER', "*/\n?".">"); + +class WP_Object_Cache { + var $cache_dir; + var $cache_enabled = false; + var $expiration_time = 900; + var $flock_filename = 'wp_object_cache.lock'; + var $mutex; + var $cache = array (); + var $dirty_objects = array (); + var $non_existant_objects = array (); + var $global_groups = array ('users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details'); + var $blog_id; + var $cold_cache_hits = 0; + var $warm_cache_hits = 0; + var $cache_misses = 0; + var $secret = ''; + + function acquire_lock() { + // Acquire a write lock. + $this->mutex = @fopen($this->cache_dir.$this->flock_filename, 'w'); + if ( false == $this->mutex) + return false; + flock($this->mutex, LOCK_EX); + return true; + } + + function key($key, $group) { + global $blog_id; + + if ( empty($group) ) + $group = 'default'; + + if (false !== array_search($group, $this->global_groups)) + $prefix = ''; + else + $prefix = $blog_id . '-'; + + if( '' != $key ) + $key = '-' . $key; + + return "$prefix$group$key"; + } + + + function add($id, $data, $group = 'default', $expire = '') { + if (empty ($group)) + $group = 'default'; + + if (false !== $this->get($id, $group, false)) + return false; + + return $this->set($id, $data, $group, $expire); + } + + function delete($id, $group = 'default', $force = false) { + $hash = $this->key($id, $group); + if (empty ($group)) + $group = 'default'; + + if (!$force && false === $this->get($id, $group, false)) + return false; + + unset ($this->cache[$hash]); + $this->non_existant_objects[$hash] = true; + $this->dirty_objects[$this->key( '', $group )][] = $id; + return true; + } + + function flush() { + if ( !$this->cache_enabled ) + return true; + + if ( ! $this->acquire_lock() ) + return false; + + $this->rm_cache_dir(); + $this->cache = array (); + $this->dirty_objects = array (); + $this->non_existant_objects = array (); + + $this->release_lock(); + + return true; + } + + function get($id, $group = 'default', $count_hits = true) { + $hash = $this->key($id, $group); + $group_key = $this->key( '', $group ); + if (empty ($group)) + $group = 'default'; + + if (isset ($this->cache[$hash])) { + if ($count_hits) + $this->warm_cache_hits += 1; + return $this->cache[$hash]; + } + + if (isset ($this->non_existant_objects[$hash])) + return false; + + // If caching is not enabled, we have to fall back to pulling from the DB. + if (!$this->cache_enabled) { + if (!isset ($this->cache[$group_key])) + $this->load_group_from_db($group_key); + + if (isset ($this->cache[$hash])) { + $this->cold_cache_hits += 1; + return $this->cache[$hash]; + } + + $this->non_existant_objects[$hash] = true; + $this->cache_misses += 1; + return false; + } + + $cache_file = $this->cache_dir.$this->get_group_dir($group_key)."/".$this->hash($hash).'.php'; + if (!file_exists($cache_file)) { + $this->non_existant_objects[$hash] = true; + $this->cache_misses += 1; + return false; + } + + // If the object has expired, remove it from the cache and return false to force + // a refresh. + $now = time(); + if ((filemtime($cache_file) + $this->expiration_time) <= $now) { + $this->cache_misses += 1; + $this->delete($id, $group, true); + return false; + } + + $this->cache[$hash] = unserialize(base64_decode(substr(@ file_get_contents($cache_file), strlen(CACHE_SERIAL_HEADER), -strlen(CACHE_SERIAL_FOOTER)))); + if (false === $this->cache[$hash]) + $this->cache[$hash] = ''; + + $this->cold_cache_hits += 1; + return $this->cache[$hash]; + } + + function get_group_dir($group) { + if (false !== array_search($group, $this->global_groups)) + return $group; + + return "{$this->blog_id}/$group"; + } + + function hash($data) { + if ( function_exists('hash_hmac') ) { + return hash_hmac('md5', $data, $this->secret); + } else { + return md5($data . $this->secret); + } + } + + function load_group_from_db($group) { + global $wpdb; + + if ('category' == $group) { + $this->cache['category'] = array (); + if ($dogs = $wpdb->get_results("SELECT * FROM $wpdb->categories")) { + foreach ($dogs as $catt) { + $this->cache['category'][$catt->cat_ID] = $catt; + $this->cache[$this->key( $catt->cat_ID, 'category' )] = $catt; + } + } + } + + } + + function make_group_dir($group, $perms) { + $group_dir = $this->get_group_dir($group); + $make_dir = ''; + foreach (split('/', $group_dir) as $subdir) { + $make_dir .= "$subdir/"; + if (!file_exists($this->cache_dir.$make_dir)) { + if (! @ mkdir($this->cache_dir.$make_dir)) + break; + @ chmod($this->cache_dir.$make_dir, $perms); + } + + if (!file_exists($this->cache_dir.$make_dir."index.php")) { + $file_perms = $perms & 0000666; + @ touch($this->cache_dir.$make_dir."index.php"); + @ chmod($this->cache_dir.$make_dir."index.php", $file_perms); + } + } + + return $this->cache_dir."$group_dir/"; + } + + function rm_cache_dir() { + $dir = $this->cache_dir; + $dir = rtrim($dir, DIRECTORY_SEPARATOR); + $top_dir = $dir; + $stack = array($dir); + $index = 0; + + while ($index < count($stack)) { + # Get indexed directory from stack + $dir = $stack[$index]; + + $dh = @ opendir($dir); + if (!$dh) + return false; + + while (($file = @ readdir($dh)) !== false) { + if ($file == '.' or $file == '..') + continue; + + if (@ is_dir($dir . DIRECTORY_SEPARATOR . $file)) + $stack[] = $dir . DIRECTORY_SEPARATOR . $file; + else if (@ is_file($dir . DIRECTORY_SEPARATOR . $file)) + @ unlink($dir . DIRECTORY_SEPARATOR . $file); + } + + $index++; + } + + $stack = array_reverse($stack); // Last added dirs are deepest + foreach($stack as $dir) { + if ( $dir != $top_dir) + @ rmdir($dir); + } + + } + + function release_lock() { + // Release write lock. + flock($this->mutex, LOCK_UN); + fclose($this->mutex); + } + + function replace($id, $data, $group = 'default', $expire = '') { + if (empty ($group)) + $group = 'default'; + + if (false === $this->get($id, $group, false)) + return false; + + return $this->set($id, $data, $group, $expire); + } + + function set($id, $data, $group = 'default', $expire = '') { + $hash = $this->key($id, $group); + if (empty ($group)) + $group = 'default'; + + if (NULL == $data) + $data = ''; + + $this->cache[$hash] = $data; + unset ($this->non_existant_objects[$hash]); + $this->dirty_objects[$this->key( '', $group )][] = $id; + + return true; + } + + function save() { + //$this->stats(); + + if (!$this->cache_enabled) + return true; + + if (empty ($this->dirty_objects)) + return true; + + // Give the new dirs the same perms as wp-content. + $stat = stat(ABSPATH.'wp-content'); + $dir_perms = $stat['mode'] & 0007777; // Get the permission bits. + $file_perms = $dir_perms & 0000666; // Remove execute bits for files. + + // Make the base cache dir. + if (!file_exists($this->cache_dir)) { + if (! @ mkdir($this->cache_dir)) + return false; + @ chmod($this->cache_dir, $dir_perms); + } + + if (!file_exists($this->cache_dir."index.php")) { + @ touch($this->cache_dir."index.php"); + @ chmod($this->cache_dir."index.php", $file_perms); + } + + if ( ! $this->acquire_lock() ) + return false; + + // Loop over dirty objects and save them. + $errors = 0; + foreach ($this->dirty_objects as $group => $ids) { + $group_dir = $this->make_group_dir($group, $dir_perms); + + $ids = array_unique($ids); + foreach ($ids as $id) { + $cache_file = $group_dir.$this->hash($group.'-'.$id).'.php'; + + // Remove the cache file if the key is not set. + if (!isset ($this->cache[$group.'-'.$id])) { + if (file_exists($cache_file)) + @ unlink($cache_file); + continue; + } + + $temp_file = tempnam($group_dir, 'tmp'); + $serial = CACHE_SERIAL_HEADER.base64_encode(serialize($this->cache[$group.'-'.$id])).CACHE_SERIAL_FOOTER; + $fd = @fopen($temp_file, 'w'); + if ( false === $fd ) { + $errors++; + continue; + } + fputs($fd, $serial); + fclose($fd); + if (!@ rename($temp_file, $cache_file)) { + if (!@ copy($temp_file, $cache_file)) + $errors++; + @ unlink($temp_file); + } + @ chmod($cache_file, $file_perms); + } + } + + $this->dirty_objects = array(); + + $this->release_lock(); + + if ( $errors ) + return false; + + return true; + } + + function stats() { + echo "<p>"; + echo "<strong>Cold Cache Hits:</strong> {$this->cold_cache_hits}<br/>"; + echo "<strong>Warm Cache Hits:</strong> {$this->warm_cache_hits}<br/>"; + echo "<strong>Cache Misses:</strong> {$this->cache_misses}<br/>"; + echo "</p>"; + + foreach ($this->cache as $group => $cache) { + echo "<p>"; + echo "<strong>Group:</strong> $group<br/>"; + echo "<strong>Cache:</strong>"; + echo "<pre>"; + print_r($cache); + echo "</pre>"; + if (isset ($this->dirty_objects[$group])) { + echo "<strong>Dirty Objects:</strong>"; + echo "<pre>"; + print_r(array_unique($this->dirty_objects[$group])); + echo "</pre>"; + echo "</p>"; + } + } + } + + function WP_Object_Cache() { + return $this->__construct(); + } + + function __construct() { + global $blog_id; + + register_shutdown_function(array(&$this, "__destruct")); + + if (defined('DISABLE_CACHE')) + return; + + if ( ! defined('ENABLE_CACHE') ) + return; + + // Disable the persistent cache if safe_mode is on. + if ( ini_get('safe_mode') && ! defined('ENABLE_CACHE') ) + return; + + if (defined('CACHE_PATH')) + $this->cache_dir = CACHE_PATH; + else + // Using the correct separator eliminates some cache flush errors on Windows + $this->cache_dir = ABSPATH.'wp-content'.DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR; + + if (is_writable($this->cache_dir) && is_dir($this->cache_dir)) { + $this->cache_enabled = true; + } else { + if (is_writable(ABSPATH.'wp-content')) { + $this->cache_enabled = true; + } + } + + if (defined('CACHE_EXPIRATION_TIME')) + $this->expiration_time = CACHE_EXPIRATION_TIME; + + if ( defined('WP_SECRET') ) + $this->secret = WP_SECRET; + else + $this->secret = DB_PASSWORD . DB_USER . DB_NAME . DB_HOST . ABSPATH; + + $this->blog_id = $this->hash($blog_id); + } + + function __destruct() { + $this->save(); + return true; + } +} +?> |