MDL-27120: Cache dirname transformations in progressive_parser::dirname

2012-05-21 11:02:16 +08:00
parent 16bf868513
commit 55f6d9d378
1 changed files with 9 additions and 1 deletions
@@ -149,7 +149,15 @@ class progressive_parser {
     * handling parser paths, see MDL-24381
     */
    public static function dirname($path) {
-        return str_replace('\\', '/', dirname($path));
+        static $cache = array();
+
+        if (!isset($cache[$path])) {
+            if (count($cache) > 4096)
+                $cache = array();
+            $cache[$path] = str_replace('\\', '/', dirname($path));
+        }
+
+        return $cache[$path];
    }

 // Protected API starts here