--- old/src/share/classes/sun/misc/ThreadGroupUtils.java 2014-04-16 18:38:07.000000000 +0400 +++ /dev/null 2014-04-16 18:38:07.000000000 +0400 @@ -1,55 +0,0 @@ -/* - * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package sun.misc; - -/** - * A utility class needed to access the root {@code ThreadGroup} - * - * The class should not depend on any others, because it' called from JNI_OnLoad of the AWT - * native library. Triggering class loading could could lead to a deadlock. - */ -public final class ThreadGroupUtils { - - private ThreadGroupUtils() { - // Avoid instantiation - } - - /** - * Returns a root thread group. - * Should be called with {@link sun.security.util.SecurityConstants#MODIFY_THREADGROUP_PERMISSION} - * - * @return a root {@code ThreadGroup} - */ - public static ThreadGroup getRootThreadGroup() { - ThreadGroup currentTG = Thread.currentThread().getThreadGroup(); - ThreadGroup parentTG = currentTG.getParent(); - while (parentTG != null) { - currentTG = parentTG; - parentTG = currentTG.getParent(); - } - return currentTG; - } -}