1 /* 2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package gc.g1.unloading.check.cleanup; 24 25 import java.lang.reflect.Method; 26 27 /** 28 * This utility class helps to finish threads that are not required anymore. 29 */ 30 public class UnusedThreadKiller implements CleanupAction { 31 32 private long threadId; 33 34 public UnusedThreadKiller(long threadId) { 35 this.threadId = threadId; 36 } 37 38 @Override 39 public void cleanup() throws Exception { 40 for (Thread thread : Thread.getAllStackTraces().keySet()) { 41 if (thread.getId() == threadId) { 42 for (Method m : thread.getClass().getMethods()) { 43 if ("finishThread".equals(m.getName())) { 44 m.invoke(thread); 45 } 46 } 47 } 48 } 49 } 50 }