| /* |
| * Copyright (c) 2008, 2012, 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. |
| * |
| * 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. |
| */ |
| |
| import java.nio.channels.AsynchronousChannelGroup; |
| import java.util.concurrent.*; |
| |
| /** |
| * Test that arbitrary tasks can be submitted to a channel group's thread pool. |
| */ |
| |
| public class AsExecutor { |
| |
| public static void main(String[] args) throws Exception { |
| // create channel groups |
| ThreadFactory factory = new PrivilegedThreadFactory(); |
| AsynchronousChannelGroup group1 = AsynchronousChannelGroup |
| .withFixedThreadPool(5, factory); |
| AsynchronousChannelGroup group2 = AsynchronousChannelGroup |
| .withCachedThreadPool(Executors.newCachedThreadPool(factory), 0); |
| AsynchronousChannelGroup group3 = AsynchronousChannelGroup |
| .withThreadPool(Executors.newFixedThreadPool(10, factory)); |
| |
| try { |
| // execute simple tasks |
| testSimpleTask(group1); |
| testSimpleTask(group2); |
| testSimpleTask(group3); |
| |
| // install security manager and test again |
| System.setSecurityManager( new SecurityManager() ); |
| testSimpleTask(group1); |
| testSimpleTask(group2); |
| testSimpleTask(group3); |
| |
| // attempt to execute tasks that run with only frames from boot |
| // class loader on the stack. |
| testAttackingTask(group1); |
| testAttackingTask(group2); |
| testAttackingTask(group3); |
| } finally { |
| group1.shutdown(); |
| group2.shutdown(); |
| group3.shutdown(); |
| } |
| } |
| |
| static void testSimpleTask(AsynchronousChannelGroup group) throws Exception { |
| Executor executor = (Executor)group; |
| final CountDownLatch latch = new CountDownLatch(1); |
| executor.execute(new Runnable() { |
| public void run() { |
| latch.countDown(); |
| } |
| }); |
| latch.await(); |
| } |
| |
| static void testAttackingTask(AsynchronousChannelGroup group) throws Exception { |
| Executor executor = (Executor)group; |
| Attack task = new Attack(); |
| executor.execute(task); |
| task.waitUntilDone(); |
| if (!task.failedDueToSecurityException()) |
| throw new RuntimeException("SecurityException expected"); |
| } |
| |
| } |