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test/compiler/6863420/Test.java@f90c822e73f8 (annotated)

test/compiler/6863420/Test.java

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright 2009 D.E. Shaw. All Rights Reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	/**
aoqi@0	26	* @test
aoqi@0	27	* @bug 6863420
aoqi@0	28	* @summary os::javaTimeNanos() go backward on Solaris x86
aoqi@0	29	*
aoqi@0	30	* Notice the internal timeout in timeout thread Test.TOT.
aoqi@0	31	* @run main/othervm/timeout=300 Test
aoqi@0	32	*/
aoqi@0	33
aoqi@0	34	public class Test {
aoqi@0	35
aoqi@0	36	static final int INTERNAL_TIMEOUT=240;
aoqi@0	37	static class TOT extends Thread {
aoqi@0	38	public void run() {
aoqi@0	39	try {
aoqi@0	40	Thread.sleep(INTERNAL_TIMEOUT*1000);
aoqi@0	41	} catch (InterruptedException ex) {
aoqi@0	42	}
aoqi@0	43	done = true;
aoqi@0	44	}
aoqi@0	45	}
aoqi@0	46
aoqi@0	47	static long value = 0;
aoqi@0	48	static boolean got_backward_time = false;
aoqi@0	49	static volatile boolean done = false;
aoqi@0	50
aoqi@0	51	public static void main(String args[]) {
aoqi@0	52	final int count = 100000;
aoqi@0	53
aoqi@0	54	TOT tot = new TOT();
aoqi@0	55	tot.setDaemon(true);
aoqi@0	56	tot.start();
aoqi@0	57
aoqi@0	58	for (int numThreads = 1; !done && numThreads <= 32; numThreads++) {
aoqi@0	59	final int numRuns = 1;
aoqi@0	60	for (int t=1; t <= numRuns; t++) {
aoqi@0	61	final int curRun = t;
aoqi@0	62
aoqi@0	63	System.out.println("Spawning " + numThreads + " threads");
aoqi@0	64	final Thread threads[] = new Thread[numThreads];
aoqi@0	65	for (int i = 0; i < threads.length; i++) {
aoqi@0	66	Runnable thread =
aoqi@0	67	new Runnable() {
aoqi@0	68	public void run() {
aoqi@0	69	for (long l = 0; !done && l < 100000; l++) {
aoqi@0	70	final long start = System.nanoTime();
aoqi@0	71	if (value == 12345678) {
aoqi@0	72	System.out.println("Wow!");
aoqi@0	73	}
aoqi@0	74	final long end = System.nanoTime();
aoqi@0	75	final long time = end - start;
aoqi@0	76	value += time;
aoqi@0	77	if (time < 0) {
aoqi@0	78	System.out.println(
aoqi@0	79	"Backwards: " +
aoqi@0	80	"start=" + start + " " +
aoqi@0	81	"end=" + end + " " +
aoqi@0	82	"time= " + time
aoqi@0	83	);
aoqi@0	84	got_backward_time = true;
aoqi@0	85	}
aoqi@0	86	}
aoqi@0	87	}
aoqi@0	88	};
aoqi@0	89	threads[i] = new Thread(thread, "Thread" + i);
aoqi@0	90	}
aoqi@0	91	for (int i = 0; i < threads.length; i++) {
aoqi@0	92	threads[i].start();
aoqi@0	93	}
aoqi@0	94	for (int i = 0; i < threads.length; i++) {
aoqi@0	95	try {
aoqi@0	96	threads[i].join();
aoqi@0	97	}
aoqi@0	98	catch (InterruptedException e) {
aoqi@0	99	continue;
aoqi@0	100	}
aoqi@0	101	}
aoqi@0	102	}
aoqi@0	103	}
aoqi@0	104
aoqi@0	105	if (got_backward_time) {
aoqi@0	106	System.exit(97);
aoqi@0	107	}
aoqi@0	108	}
aoqi@0	109	}