/*

  * Licensed to the Apache Software Foundation (ASF) under one or more

  * contributor license agreements.  See the NOTICE file distributed with

  * this work for additional information regarding copyright ownership.

  * The ASF licenses this file to You under the Apache License, Version 2.0

  * (the "License"); you may not use this file except in compliance with

  * the License.  You may obtain a copy of the License at

  * 

  *      http://www.apache.org/licenses/LICENSE-2.0

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.apache.commons.launcher;

 /**

  * A class that subclasses the {@link ThreadGroup} class. This class is used

  * by {@link ChildMain#main(String[])} to run the target application. By using

  * this class, any {@link Error} other than {@link ThreadDeath} thrown by

  * threads created by the target application will be caught the process

  * terminated. By default, the JVM will only print a stack trace of the

  * {@link Error} and destroy the thread. However, when an uncaught

  * {@link Error} occurs, it normally means that the JVM has encountered a

  * severe problem. Hence, an orderly shutdown is a reasonable approach.

  * <p>

  * Note: not all threads created by the target application are guaranteed to

  * use this class. Target application's may bypass this class by creating a

  * thread using the {@link Thread#Thread(ThreadGroup, String)} or other similar

  * constructors.

  *

  * @author Patrick Luby

  */

 public class ExitOnErrorThreadGroup extends ThreadGroup {

     //------------------------------------------------------------ Constructors

     /**

      * Constructs a new thread group. The parent of this new group is the

      * thread group of the currently running thread.

      *

      * @param name the name of the new thread group

      */

     public ExitOnErrorThreadGroup(String name) {

         super(name);

     }

     //----------------------------------------------------------------- Methods

     /**

      * Trap any uncaught {@link Error} other than {@link ThreadDeath} and exit.

      *

      * @param t the thread that is about to exit

      * @param e the uncaught exception

      */

     public void uncaughtException(Thread t, Throwable e) {

         if (e instanceof ThreadDeath)

             return;

         Launcher.error(e);

         System.exit(1);

     }

 }