<?php
/**
- * @package MediaWiki
- * @subpackage Cache
+ * Functions to get cache objects
+ *
+ * @file
+ * @ingroup Cache
*/
/**
* It acts as a memcached server with no RAM, that is, all objects are
* cleared the moment they are set. All set operations succeed and all
* get operations return null.
- * @package MediaWiki
- * @subpackage Cache
+ * @ingroup Cache
*/
class FakeMemCachedClient {
function add ($key, $val, $exp = 0) { return true; }
global $wgCaches;
$wgCaches = array();
-class ObjectCacheManager {
- /* @static */
- function getCache( $inputType ) {
- global $wgCaches, $wgMemCachedServers, $wgMemCachedDebug, $wgMemCachedPersistent;
- $cache = false;
+/**
+ * Get a cache object.
+ * @param $inputType Integer: cache type, one the the CACHE_* constants.
+ */
+function &wfGetCache( $inputType ) {
+ global $wgCaches, $wgMemCachedServers, $wgMemCachedDebug, $wgMemCachedPersistent;
+ $cache = false;
- if ( $inputType == CACHE_ANYTHING ) {
- reset( $wgCaches );
- $type = key( $wgCaches );
- if ( $type === false || $type === CACHE_NONE ) {
- $type = CACHE_DB;
- }
- } else {
- $type = $inputType;
+ if ( $inputType == CACHE_ANYTHING ) {
+ reset( $wgCaches );
+ $type = key( $wgCaches );
+ if ( $type === false || $type === CACHE_NONE ) {
+ $type = CACHE_DB;
}
+ } else {
+ $type = $inputType;
+ }
- if ( $type == CACHE_MEMCACHED ) {
- if ( !array_key_exists( CACHE_MEMCACHED, $wgCaches ) ){
- $wgCaches[CACHE_DB] = new MemCachedClientforWiki(
- array('persistant' => $wgMemCachedPersistent, 'compress_threshold' => 1500 ) );
- $cache =& $wgCaches[CACHE_DB];
- $cache->set_servers( $wgMemCachedServers );
- $cache->set_debug( $wgMemCachedDebug );
- }
- } elseif ( $type == CACHE_ACCEL ) {
- if ( !array_key_exists( CACHE_ACCEL, $wgCaches ) ) {
- if ( function_exists( 'eaccelerator_get' ) ) {
- $wgCaches[CACHE_ACCEL] = new eAccelBagOStuff;
- } elseif ( function_exists( 'apc_fetch') ) {
- $wgCaches[CACHE_ACCEL] = new APCBagOStuff;
- } elseif ( function_exists( 'mmcache_get' ) ) {
- $wgCaches[CACHE_ACCEL] = new TurckBagOStuff;
- } else {
- $wgCaches[CACHE_ACCEL] = false;
- }
- }
- if ( $wgCaches[CACHE_ACCEL] !== false ) {
- $cache =& $wgCaches[CACHE_ACCEL];
- }
+ if ( $type == CACHE_MEMCACHED ) {
+ if ( !array_key_exists( CACHE_MEMCACHED, $wgCaches ) ) {
+ $wgCaches[CACHE_MEMCACHED] = new MemCachedClientforWiki(
+ array('persistant' => $wgMemCachedPersistent, 'compress_threshold' => 1500 ) );
+ $wgCaches[CACHE_MEMCACHED]->set_servers( $wgMemCachedServers );
+ $wgCaches[CACHE_MEMCACHED]->set_debug( $wgMemCachedDebug );
}
-
- if ( $type == CACHE_DB || ( $inputType == CACHE_ANYTHING && $cache === false ) ) {
- if ( !array_key_exists( CACHE_DB, $wgCaches ) ) {
- $wgCaches[CACHE_DB] = new MediaWikiBagOStuff('objectcache');
+ $cache =& $wgCaches[CACHE_MEMCACHED];
+ } elseif ( $type == CACHE_ACCEL ) {
+ if ( !array_key_exists( CACHE_ACCEL, $wgCaches ) ) {
+ if ( function_exists( 'eaccelerator_get' ) ) {
+ $wgCaches[CACHE_ACCEL] = new eAccelBagOStuff;
+ } elseif ( function_exists( 'apc_fetch') ) {
+ $wgCaches[CACHE_ACCEL] = new APCBagOStuff;
+ } elseif( function_exists( 'xcache_get' ) ) {
+ $wgCaches[CACHE_ACCEL] = new XCacheBagOStuff();
+ } elseif( function_exists( 'wincache_ucache_get' ) ) {
+ $wgCaches[CACHE_ACCEL] = new WinCacheBagOStuff();
+ } else {
+ $wgCaches[CACHE_ACCEL] = false;
}
- $cache =& $wgCaches[CACHE_DB];
}
-
- if ( $cache === false ) {
- if ( !array_key_exists( CACHE_NONE, $wgCaches ) ) {
- $wgCaches[CACHE_NONE] = new FakeMemCachedClient;
- }
- $cache =& $wgCaches[CACHE_NONE];
+ if ( $wgCaches[CACHE_ACCEL] !== false ) {
+ $cache =& $wgCaches[CACHE_ACCEL];
}
-
- return $cache;
- }
-
- /** @static */
- function &getMainCache() {
- global $wgMainCacheType;
- $ret =& ObjectCacheManager::getCache( $wgMainCacheType );
- return $ret;
+ } elseif ( $type == CACHE_DBA ) {
+ if ( !array_key_exists( CACHE_DBA, $wgCaches ) ) {
+ $wgCaches[CACHE_DBA] = new DBABagOStuff;
+ }
+ $cache =& $wgCaches[CACHE_DBA];
}
- /** @static */
- function &getMessageCache() {
- global $wgMessageCacheType;
- $ret =& ObjectCacheManager::getCache( $wgMessageCacheType );
- return $ret;
+ if ( $type == CACHE_DB || ( $inputType == CACHE_ANYTHING && $cache === false ) ) {
+ if ( !array_key_exists( CACHE_DB, $wgCaches ) ) {
+ $wgCaches[CACHE_DB] = new SqlBagOStuff('objectcache');
+ }
+ $cache =& $wgCaches[CACHE_DB];
}
-
- /** @static */
- function &getParserCache() {
- global $wgParserCacheType;
- $ret =& ObjectCacheManager::getCache( $wgParserCacheType );
- return $ret;
+
+ if ( $cache === false ) {
+ if ( !array_key_exists( CACHE_NONE, $wgCaches ) ) {
+ $wgCaches[CACHE_NONE] = new FakeMemCachedClient;
+ }
+ $cache =& $wgCaches[CACHE_NONE];
}
-
+
+ return $cache;
}
-class MemCachedClientforWiki extends memcached {
- function _debugprint( $text ) {
- wfDebug( "memcached: $text\n" );
- }
+/** Get the main cache object */
+function &wfGetMainCache() {
+ global $wgMainCacheType;
+ $ret =& wfGetCache( $wgMainCacheType );
+ return $ret;
}
-?>
+/** Get the cache object used by the message cache */
+function &wfGetMessageCacheStorage() {
+ global $wgMessageCacheType;
+ $ret =& wfGetCache( $wgMessageCacheType );
+ return $ret;
+}
+
+/** Get the cache object used by the parser cache */
+function &wfGetParserCacheStorage() {
+ global $wgParserCacheType;
+ $ret =& wfGetCache( $wgParserCacheType );
+ return $ret;
+}