9583e3657e
Co-authored-by: Ron Pressler <rpressler@openjdk.org> Co-authored-by: Alan Bateman <alanb@openjdk.org> Co-authored-by: Erik Österlund <eosterlund@openjdk.org> Co-authored-by: Andrew Haley <aph@openjdk.org> Co-authored-by: Rickard Bäckman <rbackman@openjdk.org> Co-authored-by: Markus Grönlund <mgronlun@openjdk.org> Co-authored-by: Leonid Mesnik <lmesnik@openjdk.org> Co-authored-by: Serguei Spitsyn <sspitsyn@openjdk.org> Co-authored-by: Chris Plummer <cjplummer@openjdk.org> Co-authored-by: Coleen Phillimore <coleenp@openjdk.org> Co-authored-by: Robbin Ehn <rehn@openjdk.org> Co-authored-by: Stefan Karlsson <stefank@openjdk.org> Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org> Co-authored-by: Sergey Kuksenko <skuksenko@openjdk.org> Reviewed-by: lancea, eosterlund, rehn, sspitsyn, stefank, tschatzl, dfuchs, lmesnik, dcubed, kevinw, amenkov, dlong, mchung, psandoz, bpb, coleenp, smarks, egahlin, mseledtsov, coffeys, darcy
77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
/*
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* Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @requires vm.debug != true
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* @compile --enable-preview -source ${jdk.version} PinALot.java
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* @run main/othervm --enable-preview PinALot
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* @summary Stress test timed park when pinned
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*/
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/**
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* @test
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* @requires vm.debug == true
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* @compile --enable-preview -source ${jdk.version} PinALot.java
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* @run main/othervm/timeout=300 --enable-preview PinALot 200000
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*/
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import java.time.Duration;
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import java.time.Instant;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.locks.LockSupport;
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public class PinALot {
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static final Object lock = new Object();
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public static void main(String[] args) throws Exception {
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int iterations = 1_000_000;
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if (args.length > 0) {
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iterations = Integer.parseInt(args[0]);
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}
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final int ITERATIONS = iterations;
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AtomicInteger count = new AtomicInteger();
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Thread thread = Thread.ofVirtual().start(() -> {
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synchronized (lock) {
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while (count.incrementAndGet() < ITERATIONS) {
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LockSupport.parkNanos(1);
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}
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}
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});
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boolean terminated;
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do {
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terminated = thread.join(Duration.ofSeconds(1));
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System.out.println(Instant.now() + " => " + count.get());
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} while (!terminated);
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int countValue = count.get();
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if (countValue != ITERATIONS) {
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throw new RuntimeException("count = " + countValue);
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}
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}
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}
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