92 lines
3.5 KiB
Java
92 lines
3.5 KiB
Java
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/*
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* Copyright 2009 D.E. Shaw. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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/**
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* @test
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* @bug 6863420
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* @summary os::javaTimeNanos() go backward on Solaris x86
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*
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* @run main/othervm Test
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*/
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public class Test {
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static long value = 0;
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static boolean got_backward_time = false;
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public static void main(String args[]) {
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final int count = 100000;
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for (int numThreads = 1; numThreads <= 32; numThreads++) {
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final int numRuns = 1;
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for (int t=1; t <= numRuns; t++) {
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final int curRun = t;
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System.out.println("Spawning " + numThreads + " threads");
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final Thread threads[] = new Thread[numThreads];
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for (int i = 0; i < threads.length; i++) {
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Runnable thread =
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new Runnable() {
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public void run() {
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for (long l = 0; l < 100000; l++) {
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final long start = System.nanoTime();
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if (value == 12345678) {
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System.out.println("Wow!");
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}
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final long end = System.nanoTime();
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final long time = end - start;
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value += time;
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if (time < 0) {
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System.out.println(
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"Backwards: " +
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"start=" + start + " " +
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"end=" + end + " " +
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"time= " + time
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);
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got_backward_time = true;
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}
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}
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}
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};
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threads[i] = new Thread(thread, "Thread" + i);
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}
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for (int i = 0; i < threads.length; i++) {
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threads[i].start();
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}
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for (int i = 0; i < threads.length; i++) {
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try {
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threads[i].join();
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}
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catch (InterruptedException e) {
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continue;
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}
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}
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}
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}
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if (got_backward_time) {
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System.exit(97);
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}
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}
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}
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