diff options
| author | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2006-06-22 18:31:50 +0000 |
|---|---|---|
| committer | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2006-06-22 18:31:50 +0000 |
| commit | d48e85e0ac5e675ca33fac173f30c75403d1033f (patch) | |
| tree | 1164430fa3b83a4d9283961b09c1576f2885e6b2 /wp-inst/wp-includes/cache.php | |
| parent | 086dcde66603301531efc6d8087bd06d0546f148 (diff) | |
| download | wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.tar.gz wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.tar.xz wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.zip | |
Moved everything in wp-inst down a directory.
Uses's Ryan Boren's htaccess rules and mods
If you're upgrading, try this on a test server first!
git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@591 7be80a69-a1ef-0310-a953-fb0f7c49ff36
Diffstat (limited to 'wp-inst/wp-includes/cache.php')
| -rw-r--r-- | wp-inst/wp-includes/cache.php | 434 |
1 files changed, 0 insertions, 434 deletions
diff --git a/wp-inst/wp-includes/cache.php b/wp-inst/wp-includes/cache.php deleted file mode 100644 index 976a0b3..0000000 --- a/wp-inst/wp-includes/cache.php +++ /dev/null @@ -1,434 +0,0 @@ -<?php
-function wp_cache_add($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
-
- return $wp_object_cache->add($key, $data, $flag, $expire);
-}
-
-function wp_cache_close() {
- global $wp_object_cache;
-
- 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() {
- global $wp_object_cache;
-
- $wp_object_cache = new WP_Object_Cache();
-}
-
-function wp_cache_replace($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
-
- return $wp_object_cache->replace($key, $data, $flag, $expire);
-}
-
-function wp_cache_set($key, $data, $flag = '', $expire = 0) {
- global $wp_object_cache;
-
- 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 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', $force = false) {
- if (empty ($group))
- $group = 'default';
-
- if (!$force && false === $this->get($id, $group, false))
- return false;
-
- unset ($this->cache[$group][$id]);
- $this->non_existant_objects[$group][$id] = true;
- $this->dirty_objects[$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', $count_hits = true) {
- if (empty ($group))
- $group = 'default';
-
- if (isset ($this->cache[$group][$id])) {
- if ($count_hits)
- $this->warm_cache_hits += 1;
- return $this->cache[$group][$id];
- }
-
- if (isset ($this->non_existant_objects[$group][$id]))
- 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]))
- $this->load_group_from_db($group);
-
- if (isset ($this->cache[$group][$id])) {
- $this->cold_cache_hits += 1;
- return $this->cache[$group][$id];
- }
-
- $this->non_existant_objects[$group][$id] = true;
- $this->cache_misses += 1;
- return false;
- }
-
- $cache_file = $this->cache_dir.$this->get_group_dir($group)."/".$this->hash($id).'.php';
- if (!file_exists($cache_file)) {
- $this->non_existant_objects[$group][$id] = 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;
- }
-
- $this->cache[$group][$id] = unserialize(base64_decode(substr(@ file_get_contents($cache_file), strlen(CACHE_SERIAL_HEADER), -strlen(CACHE_SERIAL_FOOTER))));
- if (false === $this->cache[$group][$id])
- $this->cache[$group][$id] = '';
-
- $this->cold_cache_hits += 1;
- return $this->cache[$group][$id];
- }
-
- function get_group_dir($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;
- }
- } else
- if ('options' == $group) {
- $wpdb->hide_errors();
- if (!$options = $wpdb->get_results("SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'")) {
- $options = $wpdb->get_results("SELECT option_name, option_value FROM $wpdb->options");
- }
- $wpdb->show_errors();
-
- if ( ! $options )
- return;
-
- foreach ($options as $option) {
- $this->cache['options'][$option->option_name] = $option->option_value;
- }
- }
- }
-
- function make_group_dir($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', $expire = '') {
- if (empty ($group))
- $group = 'default';
-
- if (NULL == $data)
- $data = '';
-
- $this->cache[$group][$id] = $data;
- unset ($this->non_existant_objects[$group][$id]);
- $this->dirty_objects[$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($id).'.php';
-
- // Remove the cache file if the key is not set.
- if (!isset ($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, $cache_file))
- @ unlink($temp_file);
- else
- $errors++;
- }
- @ chmod($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() {
- global $blog_id;
-
- 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);
- }
-}
-?>
|
