/* * Copyright (c) 2020, 2023, 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 * @summary Stress test Thread.sleep * @requires vm.debug != true & vm.continuations * @run main/othervm SleepALot 500000 */ /* * @test * @requires vm.debug == true & vm.continuations * @run main/othervm/timeout=300 SleepALot 200000 */ import java.time.Duration; import java.time.Instant; import java.util.concurrent.atomic.AtomicInteger; public class SleepALot { public static void main(String[] args) throws Exception { int iterations = 1_000_000; if (args.length > 0) { iterations = Integer.parseInt(args[0]); } final int ITERATIONS = iterations; AtomicInteger count = new AtomicInteger(); Thread thread = Thread.ofVirtual().start(() -> { while (count.incrementAndGet() < ITERATIONS) { try { Thread.sleep(Duration.ofNanos(100)); } catch (InterruptedException ignore) { } } }); boolean terminated; do { terminated = thread.join(Duration.ofSeconds(1)); System.out.println(Instant.now() + " => " + count.get()); } while (!terminated); int countValue = count.get(); if (countValue != ITERATIONS) { throw new RuntimeException("count = " + countValue); } } }