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/*
* Copyright (c) 2008, 2017, 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.
*/
/*
* @test
* @bug 4607272
* @summary tests tasks can be submitted to a channel group's thread pool.
* @library /lib/testlibrary bootlib
* @build JarUtils PrivilegedThreadFactory Attack
* @run driver SetupJar
* @run main/othervm -Xbootclasspath/a:privileged.jar AsExecutor
*/
import java.nio.channels.AsynchronousChannelGroup;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
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");
}
}
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