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/*
* Copyright (c) 2017, 2020, Red Hat, Inc. 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 TestVerifyJCStress
* @summary Tests that we pass at least one jcstress-like test with all verification turned on
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @modules java.base/jdk.internal.misc
* java.management
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestVerifyJCStress
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestVerifyJCStress
*/
/*
* @test TestVerifyJCStress
* @summary Tests that we pass at least one jcstress-like test with all verification turned on
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @modules java.base/jdk.internal.misc
* java.management
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
* -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
* TestVerifyJCStress
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
* -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
* TestVerifyJCStress
*/
/*
* @test TestVerifyJCStress
* @summary Tests that we pass at least one jcstress-like test with all verification turned on
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @modules java.base/jdk.internal.misc
* java.management
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
* TestVerifyJCStress
*
* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:TieredStopAtLevel=1
* TestVerifyJCStress
*/
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.locks.*;
public class TestVerifyJCStress {
public static void main(String[] args) throws Exception {
ExecutorService service = Executors.newFixedThreadPool(
2,
r -> {
Thread t = new Thread(r);
t.setDaemon(true);
return t;
}
);
for (int c = 0; c < 10000; c++) {
final Test[] tests = new Test[10000];
for (int t = 0; t < tests.length; t++) {
tests[t] = new Test();
}
Future<?> f1 = service.submit(() -> {
IntResult2 r = new IntResult2();
for (Test test : tests) {
test.RL_Us(r);
}
});
Future<?> f2 = service.submit(() -> {
for (Test test : tests) {
test.WLI_Us();
}
});
f1.get();
f2.get();
}
}
public static class IntResult2 {
int r1, r2;
}
public static class Test {
final StampedLock lock = new StampedLock();
int x, y;
public void RL_Us(IntResult2 r) {
StampedLock lock = this.lock;
long stamp = lock.readLock();
r.r1 = x;
r.r2 = y;
lock.unlock(stamp);
}
public void WLI_Us() {
try {
StampedLock lock = this.lock;
long stamp = lock.writeLockInterruptibly();
x = 1;
y = 2;
lock.unlock(stamp);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}
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