107 lines
4.0 KiB
Java
107 lines
4.0 KiB
Java
|
/*
|
||
|
|
* Copyright (c) 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 8167108
|
||
|
|
* @summary Stress test java.lang.Thread.interrupt() at thread exit.
|
||
|
|
* @run main/othervm -Xlog:thread+smr=debug InterruptAtExit
|
||
|
|
*/
|
||
|
|
|
||
|
|
import java.util.concurrent.CountDownLatch;
|
||
|
|
|
||
|
|
public class InterruptAtExit extends Thread {
|
||
|
|
final static int N_THREADS = 32;
|
||
|
|
final static int N_LATE_CALLS = 1000;
|
||
|
|
|
||
|
|
public CountDownLatch exitSyncObj = new CountDownLatch(1);
|
||
|
|
public CountDownLatch startSyncObj = new CountDownLatch(1);
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void run() {
|
||
|
|
// Tell main thread we have started.
|
||
|
|
startSyncObj.countDown();
|
||
|
|
try {
|
||
|
|
// Wait for main thread to interrupt us so we
|
||
|
|
// can race to exit.
|
||
|
|
exitSyncObj.await();
|
||
|
|
} catch (InterruptedException e) {
|
||
|
|
// ignore because we expect one
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void main(String[] args) {
|
||
|
|
InterruptAtExit threads[] = new InterruptAtExit[N_THREADS];
|
||
|
|
|
||
|
|
for (int i = 0; i < N_THREADS; i++ ) {
|
||
|
|
threads[i] = new InterruptAtExit();
|
||
|
|
int late_count = 1;
|
||
|
|
threads[i].start();
|
||
|
|
try {
|
||
|
|
// Wait for the worker thread to get going.
|
||
|
|
threads[i].startSyncObj.await();
|
||
|
|
|
||
|
|
// The first interrupt() call will break the
|
||
|
|
// worker out of the exitSyncObj.await() call
|
||
|
|
// and the rest will come in during thread exit.
|
||
|
|
for (; late_count <= N_LATE_CALLS; late_count++) {
|
||
|
|
threads[i].interrupt();
|
||
|
|
|
||
|
|
if (!threads[i].isAlive()) {
|
||
|
|
// Done with Thread.interrupt() calls since
|
||
|
|
// thread is not alive.
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} catch (InterruptedException e) {
|
||
|
|
throw new Error("Unexpected: " + e);
|
||
|
|
}
|
||
|
|
|
||
|
|
System.out.println("INFO: thread #" + i + ": made " + late_count +
|
||
|
|
" late calls to java.lang.Thread.interrupt()");
|
||
|
|
System.out.println("INFO: thread #" + i + ": N_LATE_CALLS==" +
|
||
|
|
N_LATE_CALLS + " value is " +
|
||
|
|
((late_count >= N_LATE_CALLS) ? "NOT " : "") +
|
||
|
|
"large enough to cause a Thread.interrupt() " +
|
||
|
|
"call after thread exit.");
|
||
|
|
|
||
|
|
try {
|
||
|
|
threads[i].join();
|
||
|
|
} catch (InterruptedException e) {
|
||
|
|
throw new Error("Unexpected: " + e);
|
||
|
|
}
|
||
|
|
threads[i].interrupt();
|
||
|
|
if (threads[i].isAlive()) {
|
||
|
|
throw new Error("Expected !Thread.isAlive() after thread #" +
|
||
|
|
i + " has been join()'ed");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
String cmd = System.getProperty("sun.java.command");
|
||
|
|
if (cmd != null && !cmd.startsWith("com.sun.javatest.regtest.agent.MainWrapper")) {
|
||
|
|
// Exit with success in a non-JavaTest environment:
|
||
|
|
System.exit(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|