Detect/use APCu properly

[lhc/web/wiklou.git] / includes / objectcache / ObjectCache.php

diff --git a/includes/objectcache/ObjectCache.php b/includes/objectcache/ObjectCache.php
index 0f18479..87a6272 100644 (file)
--- a/includes/objectcache/ObjectCache.php
+++ b/includes/objectcache/ObjectCache.php
@@ -50,7 +50,7 @@ use MediaWiki\MediaWikiServices;
  *
  * - ObjectCache::getLocalServerInstance( $fallbackType )
  *   Purpose: Memory cache for very hot keys.
- *   Stored only on the individual web server (typically APC for web requests,
+ *   Stored only on the individual web server (typically APC or APCu for web requests,
  *   and EmptyBagOStuff in CLI mode).
  *   Not replicated to the other servers.
  *
@@ -265,7 +265,7 @@ class ObjectCache {
        /**
         * Factory function for CACHE_ACCEL (referenced from DefaultSettings.php)
         *
-        * This will look for any APC style server-local cache.
+        * This will look for any APC or APCu style server-local cache.
         * A fallback cache can be specified if none is found.
         *
         *     // Direct calls
@@ -274,18 +274,29 @@ class ObjectCache {
         *     // From $wgObjectCaches via newFromParams()
         *     ObjectCache::getLocalServerInstance( [ 'fallback' => $fallbackType ] );
         *
-        * @param int|string $fallback Fallback cache ID
+        * @param int|string|array $fallback Fallback cache or parameter map with 'fallback'
         * @return BagOStuff
         * @throws InvalidArgumentException
         * @since 1.27
-        * @deprecated Since 1.28; use MediaWikiServices::getLocalServerObjectCache
         */
        public static function getLocalServerInstance( $fallback = CACHE_NONE ) {
-               $cache = MediaWikiServices::getInstance()->getLocalServerObjectCache();
+               if ( function_exists( 'apc_fetch' ) ) {
+                       $id = 'apc';
+               } elseif ( function_exists( 'apcu_fetch' ) ) {
+                       $id = 'apcu';
+               } elseif ( function_exists( 'xcache_get' ) && wfIniGetBool( 'xcache.var_size' ) ) {
+                       $id = 'xcache';
+               } elseif ( function_exists( 'wincache_ucache_get' ) ) {
+                       $id = 'wincache';
+               } else {
+                       if ( is_array( $fallback ) ) {
+                               $id = isset( $fallback['fallback'] ) ? $fallback['fallback'] : CACHE_NONE;
+                       } else {
+                               $id = $fallback;
+                       }
+               }
 
-               return ( $cache instanceof EmptyBagOStuff )
-                       ? self::getInstance( $fallback )
-                       : $cache;
+               return self::getInstance( $id );
        }
 
        /**
@@ -374,10 +385,11 @@ class ObjectCache {
         *
         * @since 1.26
         * @return WANObjectCache
-        * @deprecated Since 1.28 Use MediaWikiServices::getMainWANCache()
         */
        public static function getMainWANInstance() {
-               return MediaWikiServices::getInstance()->getMainWANObjectCache();
+               global $wgMainWANCache;
+
+               return self::getWANInstance( $wgMainWANCache );
        }
 
        /**
@@ -397,10 +409,11 @@ class ObjectCache {
         *
         * @return BagOStuff
         * @since 1.26
-        * @deprecated Since 1.28 Use MediaWikiServices::getMainObjectStash
         */
        public static function getMainStashInstance() {
-               return MediaWikiServices::getInstance()->getMainObjectStash();
+               global $wgMainStash;
+
+               return self::getInstance( $wgMainStash );
        }
 
        /**