1 package org.apache.maven.shared.utils.cli; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import java.security.AccessControlException; 23 24 /** 25 * A shutdown hook that does not throw any exceptions upon container startup/shutdown or security manager 26 * restrictions. 27 * 28 * Incorrect usage of the hook itself may still throw an exception. 29 * 30 * @author Kristian Rosenvold 31 */ 32 public class ShutdownHookUtils 33 { 34 35 public static void addShutDownHook( Thread hook ) 36 { 37 try 38 { 39 Runtime.getRuntime().addShutdownHook( hook ); 40 } 41 catch ( IllegalStateException ignore ) 42 { 43 // ignore 44 } 45 catch ( AccessControlException ignore ) 46 { 47 // ignore 48 } 49 } 50 51 public static void removeShutdownHook( Thread hook ) 52 { 53 try 54 { 55 Runtime.getRuntime().removeShutdownHook( hook ); 56 } 57 catch ( IllegalStateException ignore ) 58 { 59 // ignore 60 } 61 catch ( AccessControlException ignore ) 62 { 63 // ignore 64 } 65 } 66 67 }