AsExecutor.java revision 893:f06f30b29f36
1/* 2 * Copyright 2008-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24import java.nio.channels.AsynchronousChannelGroup; 25import java.util.concurrent.*; 26 27/** 28 * Test that arbitrary tasks can be submitted to a channel group's thread pool. 29 */ 30 31public class AsExecutor { 32 33 public static void main(String[] args) throws Exception { 34 // create channel groups 35 ThreadFactory factory = new PrivilegedThreadFactory(); 36 AsynchronousChannelGroup group1 = AsynchronousChannelGroup 37 .withFixedThreadPool(5, factory); 38 AsynchronousChannelGroup group2 = AsynchronousChannelGroup 39 .withCachedThreadPool(Executors.newCachedThreadPool(factory), 0); 40 41 try { 42 // execute simple tasks 43 testSimpleTask(group1); 44 testSimpleTask(group2); 45 46 // install security manager and test again 47 System.setSecurityManager( new SecurityManager() ); 48 testSimpleTask(group1); 49 testSimpleTask(group2); 50 51 // attempt to execute tasks that run with only frames from boot 52 // class loader on the stack. 53 testAttackingTask(group1); 54 testAttackingTask(group2); 55 } finally { 56 group1.shutdown(); 57 group2.shutdown(); 58 } 59 } 60 61 static void testSimpleTask(AsynchronousChannelGroup group) throws Exception { 62 Executor executor = (Executor)group; 63 final CountDownLatch latch = new CountDownLatch(1); 64 executor.execute(new Runnable() { 65 public void run() { 66 latch.countDown(); 67 } 68 }); 69 latch.await(); 70 } 71 72 static void testAttackingTask(AsynchronousChannelGroup group) throws Exception { 73 Executor executor = (Executor)group; 74 Attack task = new Attack(); 75 executor.execute(task); 76 task.waitUntilDone(); 77 if (!task.failedDueToSecurityException()) 78 throw new RuntimeException("SecurityException expected"); 79 } 80 81} 82