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/*
* Copyright (c) 2004, 2018, 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.
*/
package nsk.monitoring.ThreadInfo.isSuspended;
import java.lang.management.*;
import java.io.*;
import nsk.share.*;
public class issuspended002 {
private static Wicket mainEntrance = new Wicket();
private static boolean testFailed = false;
public static void main(String[] argv) {
System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));
}
public static int run(String[] argv, PrintStream out) {
ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
MyThread thread = new MyThread(out);
thread.start();
// Wait for MyThread to start
mainEntrance.waitFor();
long id = thread.getId();
ThreadInfo info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
boolean isSuspended = info.isSuspended();
if (isSuspended) {
out.println("Failure 1.");
out.println("ThreadInfo.isSuspended() returned true, before "
+ "Thread.suspend() was invoked.");
testFailed = true;
}
thread.suspend();
info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
isSuspended = info.isSuspended();
if (!isSuspended) {
out.println("Failure 2.");
out.println("ThreadInfo.isSuspended() returned false, after "
+ "Thread.suspend() was invoked.");
testFailed = true;
}
thread.resume();
info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
isSuspended = info.isSuspended();
if (isSuspended) {
out.println("Failure 3.");
out.println("ThreadInfo.isSuspended() returned true, after "
+ "Thread.resume() was invoked.");
testFailed = true;
}
thread.die = true;
int count = 0;
while (true) {
info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
if (info == null) {
// the thread has exited
break;
}
count++;
isSuspended = info.isSuspended();
if (isSuspended) {
out.println("Failure 4.");
out.println("ThreadInfo.isSuspended() returned true, after "
+ "thread.die was set to true.");
testFailed = true;
break;
}
}
out.println("INFO: made " + count + " late getThreadInfo() calls.");
if (testFailed)
out.println("TEST FAILED");
return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED;
}
private static class MyThread extends Thread {
final static long WAIT_TIME = 500; // Milliseconds
Object object = new Object();
volatile boolean die = false;
PrintStream out;
MyThread(PrintStream out) {
this.out = out;
}
public void run() {
// Notify "main" thread that MyThread has started
mainEntrance.unlock();
while (!die) {
synchronized(object) {
try {
object.wait(WAIT_TIME);
} catch (InterruptedException e) {
out.println("Unexpected exception.");
e.printStackTrace(out);
testFailed = true;
}
} // synchronized
}
} // run()
} // MyThread
}
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