Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / util / preventers / LoginConfigurationLeakPreventer.java

diff --git a/lib/jetty/org/eclipse/jetty/util/preventers/LoginConfigurationLeakPreventer.java b/lib/jetty/org/eclipse/jetty/util/preventers/LoginConfigurationLeakPreventer.java
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+++ b/lib/jetty/org/eclipse/jetty/util/preventers/LoginConfigurationLeakPreventer.java
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+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.util.preventers;
+
+/**
+ * LoginConfigurationLeakPreventer
+ *
+ * The javax.security.auth.login.Configuration class keeps a static reference to the 
+ * thread context classloader. We prevent a webapp context classloader being used for
+ * that by invoking the classloading here.
+ * 
+ * Inspired by Tomcat JreMemoryLeakPrevention
+ */
+public class LoginConfigurationLeakPreventer extends AbstractLeakPreventer
+{
+    /* ------------------------------------------------------------ */
+    /** 
+     * @see org.eclipse.jetty.util.preventers.AbstractLeakPreventer#prevent(java.lang.ClassLoader)
+     */
+    @Override
+    public void prevent(ClassLoader loader)
+    {
+        try
+        {
+            Class.forName("javax.security.auth.login.Configuration", true, loader);
+        }
+        catch (ClassNotFoundException e)
+        {
+            LOG.warn(e);
+        }
+    }
+
+}