MediaWiki 1.17.0

[autoinstallsdev/mediawiki.git] / includes / ObjectCache.php

diff --git a/includes/ObjectCache.php b/includes/ObjectCache.php
index dbf6221c96014c78e6d0f532864fca253dfba65d..db22c0747cb061715bca4659c64ceab73770bfb5 100644 (file)
--- a/includes/ObjectCache.php
+++ b/includes/ObjectCache.php
@@ -1,20 +1,17 @@
 <?php
 /**
- * @package MediaWiki
- * @subpackage Cache
+ * Functions to get cache objects
+ *
+ * @file
+ * @ingroup Cache
  */
 
-/** */
-if (!defined('MEDIAWIKI')) die( "Not a valid entry point\n");
-
-
 /**
  * FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
  * 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; }
@@ -37,9 +34,12 @@ class FakeMemCachedClient {
 global $wgCaches;
 $wgCaches = array();
 
-/** @todo document */
+/**
+ * Get a cache object.
+ * @param $inputType Integer: cache type, one the the CACHE_* constants. 
+ */
 function &wfGetCache( $inputType ) {
-       global $wgCaches, $wgMemCachedServers, $wgMemCachedDebug;
+       global $wgCaches, $wgMemCachedServers, $wgMemCachedDebug, $wgMemCachedPersistent;
        $cache = false;
 
        if ( $inputType == CACHE_ANYTHING ) {
@@ -53,31 +53,23 @@ function &wfGetCache( $inputType ) {
        }
 
        if ( $type == CACHE_MEMCACHED ) {
-               if ( !array_key_exists( CACHE_MEMCACHED, $wgCaches ) ){ 
-                       require_once( 'memcached-client.php' );
-                       
-                       if (!class_exists("MemcachedClientforWiki")) {
-                               class MemCachedClientforWiki extends memcached {
-                                       function _debugprint( $text ) {
-                                               wfDebug( "memcached: $text\n" );
-                                       }
-                               }
-                       }
-
-                       $wgCaches[CACHE_DB] = new MemCachedClientforWiki( 
-                               array('persistant' => false, 'compress_threshold' => 1500 ) );
-                       $cache =& $wgCaches[CACHE_DB];
-                       $cache->set_servers( $wgMemCachedServers );
-                       $cache->set_debug( $wgMemCachedDebug );
+               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 );
                }
+               $cache =& $wgCaches[CACHE_MEMCACHED];
        } elseif ( $type == CACHE_ACCEL ) {
                if ( !array_key_exists( CACHE_ACCEL, $wgCaches ) ) {
                        if ( function_exists( 'eaccelerator_get' ) ) {
-                               require_once( 'BagOStuff.php' );
                                $wgCaches[CACHE_ACCEL] = new eAccelBagOStuff;
-                       } elseif ( function_exists( 'mmcache_get' ) ) {
-                               require_once( 'BagOStuff.php' );
-                               $wgCaches[CACHE_ACCEL] = new TurckBagOStuff;
+                       } 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;
                        }
@@ -85,16 +77,20 @@ function &wfGetCache( $inputType ) {
                if ( $wgCaches[CACHE_ACCEL] !== false ) {
                        $cache =& $wgCaches[CACHE_ACCEL];
                }
+       } elseif ( $type == CACHE_DBA ) {
+               if ( !array_key_exists( CACHE_DBA, $wgCaches ) ) {
+                       $wgCaches[CACHE_DBA] = new DBABagOStuff;
+               }
+               $cache =& $wgCaches[CACHE_DBA];
        }
 
        if ( $type == CACHE_DB || ( $inputType == CACHE_ANYTHING && $cache === false ) ) {
                if ( !array_key_exists( CACHE_DB, $wgCaches ) ) {
-                       require_once( 'BagOStuff.php' );
-                       $wgCaches[CACHE_DB] = new MediaWikiBagOStuff('objectcache');
+                       $wgCaches[CACHE_DB] = new SqlBagOStuff('objectcache');
                }
                $cache =& $wgCaches[CACHE_DB];
        }
-       
+
        if ( $cache === false ) {
                if ( !array_key_exists( CACHE_NONE, $wgCaches ) ) {
                        $wgCaches[CACHE_NONE] = new FakeMemCachedClient;
@@ -105,22 +101,23 @@ function &wfGetCache( $inputType ) {
        return $cache;
 }
 
+/** 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;
 }
-
-?>