Convert Title::getTitleCache() to using MapCacheLRU (again)

Re-applies commit 7a25cd388c8adcce6, reverted by 3648e5683c0ff11c0.

Change-Id: I087edb15fbe11ccac7be28540e20d990f5615c4e

diff --git a/includes/Title.php b/includes/Title.php
index 8586ad7..b583554 100644 (file)
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -37,7 +37,7 @@ use MediaWiki\MediaWikiServices;
  *       and does not rely on global state or the database.
  */
 class Title implements LinkTarget {
-       /** @var HashBagOStuff */
+       /** @var MapCacheLRU */
        static private $titleCache = null;
 
        /**
@@ -371,11 +371,11 @@ class Title implements LinkTarget {
        }
 
        /**
-        * @return HashBagOStuff
+        * @return MapCacheLRU
         */
        private static function getTitleCache() {
                if ( self::$titleCache == null ) {
-                       self::$titleCache = new HashBagOStuff( [ 'maxKeys' => self::CACHE_MAX ] );
+                       self::$titleCache = new MapCacheLRU( self::CACHE_MAX );
                }
                return self::$titleCache;
        }