1 /*
2 * Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.util.concurrent.TimeUnit;
25 import java.util.concurrent.Phaser;
26 import java.util.concurrent.CountDownLatch;
27 import java.util.concurrent.atomic.AtomicInteger;
28 import java.util.concurrent.atomic.AtomicReference;
29 import java.util.concurrent.locks.Condition;
30 import java.util.concurrent.locks.Lock;
31 import java.util.concurrent.locks.Condition;
32 import java.util.concurrent.locks.ReentrantLock;
33 import java.util.function.Consumer;
34 import java.util.stream.IntStream;
35 import java.util.stream.Stream;
36
37 /**
38 * @test
39 * @bug 8066859
40 * @summary Check that AQS-based locks, conditions, and CountDownLatches do not fail when encountering OOME
41 * @requires vm.gc.G1
42 * @requires test.thread.factory == null
43 * @requires !(vm.graal.enabled & vm.compMode == "Xcomp")
44 * @run main/othervm -XX:+UseG1GC -XX:-UseGCOverheadLimit -Xmx48M -XX:-UseTLAB OOMEInAQS
45 */
46
47 public class OOMEInAQS extends Thread {
48 static final int NTHREADS = 2; // intentionally not a scalable test; > 2 is very slow
49 static final int NREPS = 100;
50 // statically allocate
51 static final ReentrantLock mainLock = new ReentrantLock();
52 static final Condition condition = mainLock.newCondition();
53 static final CountDownLatch started = new CountDownLatch(1);
54 static final CountDownLatch filled = new CountDownLatch(1);
55 static final CountDownLatch canFill = new CountDownLatch(NTHREADS);
56 static volatile Object data;
57 static volatile Throwable exception;
58 static int turn;
59
60 /**
61 * For each of NTHREADS threads, REPS times: Take turns
62 * executing. Introduce OOM using fillHeap during runs. In
63 * addition to testing AQS, the CountDownLatches ensure that
|
1 /*
2 * Copyright (c) 2013, 2026, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.util.concurrent.TimeUnit;
25 import java.util.concurrent.Phaser;
26 import java.util.concurrent.CountDownLatch;
27 import java.util.concurrent.atomic.AtomicInteger;
28 import java.util.concurrent.atomic.AtomicReference;
29 import java.util.concurrent.locks.Condition;
30 import java.util.concurrent.locks.Lock;
31 import java.util.concurrent.locks.Condition;
32 import java.util.concurrent.locks.ReentrantLock;
33 import java.util.function.Consumer;
34 import java.util.stream.IntStream;
35 import java.util.stream.Stream;
36
37 /**
38 * @test
39 * @bug 8066859
40 * @summary Check that AQS-based locks, conditions, and CountDownLatches do not fail when encountering OOME
41 * @requires vm.gc.G1
42 * @requires test.thread.factory == null
43 * @run main/othervm -XX:+UseG1GC -XX:-UseGCOverheadLimit -Xmx48M -XX:-UseTLAB OOMEInAQS
44 */
45
46 public class OOMEInAQS extends Thread {
47 static final int NTHREADS = 2; // intentionally not a scalable test; > 2 is very slow
48 static final int NREPS = 100;
49 // statically allocate
50 static final ReentrantLock mainLock = new ReentrantLock();
51 static final Condition condition = mainLock.newCondition();
52 static final CountDownLatch started = new CountDownLatch(1);
53 static final CountDownLatch filled = new CountDownLatch(1);
54 static final CountDownLatch canFill = new CountDownLatch(NTHREADS);
55 static volatile Object data;
56 static volatile Throwable exception;
57 static int turn;
58
59 /**
60 * For each of NTHREADS threads, REPS times: Take turns
61 * executing. Introduce OOM using fillHeap during runs. In
62 * addition to testing AQS, the CountDownLatches ensure that
|