1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/test/compiler/6863420/Test.java Wed Apr 27 01:25:04 2016 +0800 1.3 @@ -0,0 +1,109 @@ 1.4 +/* 1.5 + * Copyright 2009 D.E. Shaw. All Rights Reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. 1.11 + * 1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.15 + * version 2 for more details (a copy is included in the LICENSE file that 1.16 + * accompanied this code). 1.17 + * 1.18 + * You should have received a copy of the GNU General Public License version 1.19 + * 2 along with this work; if not, write to the Free Software Foundation, 1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.21 + * 1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.23 + * or visit www.oracle.com if you need additional information or have any 1.24 + * questions. 1.25 + * 1.26 + */ 1.27 + 1.28 +/** 1.29 + * @test 1.30 + * @bug 6863420 1.31 + * @summary os::javaTimeNanos() go backward on Solaris x86 1.32 + * 1.33 + * Notice the internal timeout in timeout thread Test.TOT. 1.34 + * @run main/othervm/timeout=300 Test 1.35 + */ 1.36 + 1.37 +public class Test { 1.38 + 1.39 + static final int INTERNAL_TIMEOUT=240; 1.40 + static class TOT extends Thread { 1.41 + public void run() { 1.42 + try { 1.43 + Thread.sleep(INTERNAL_TIMEOUT*1000); 1.44 + } catch (InterruptedException ex) { 1.45 + } 1.46 + done = true; 1.47 + } 1.48 + } 1.49 + 1.50 + static long value = 0; 1.51 + static boolean got_backward_time = false; 1.52 + static volatile boolean done = false; 1.53 + 1.54 + public static void main(String args[]) { 1.55 + final int count = 100000; 1.56 + 1.57 + TOT tot = new TOT(); 1.58 + tot.setDaemon(true); 1.59 + tot.start(); 1.60 + 1.61 + for (int numThreads = 1; !done && numThreads <= 32; numThreads++) { 1.62 + final int numRuns = 1; 1.63 + for (int t=1; t <= numRuns; t++) { 1.64 + final int curRun = t; 1.65 + 1.66 + System.out.println("Spawning " + numThreads + " threads"); 1.67 + final Thread threads[] = new Thread[numThreads]; 1.68 + for (int i = 0; i < threads.length; i++) { 1.69 + Runnable thread = 1.70 + new Runnable() { 1.71 + public void run() { 1.72 + for (long l = 0; !done && l < 100000; l++) { 1.73 + final long start = System.nanoTime(); 1.74 + if (value == 12345678) { 1.75 + System.out.println("Wow!"); 1.76 + } 1.77 + final long end = System.nanoTime(); 1.78 + final long time = end - start; 1.79 + value += time; 1.80 + if (time < 0) { 1.81 + System.out.println( 1.82 + "Backwards: " + 1.83 + "start=" + start + " " + 1.84 + "end=" + end + " " + 1.85 + "time= " + time 1.86 + ); 1.87 + got_backward_time = true; 1.88 + } 1.89 + } 1.90 + } 1.91 + }; 1.92 + threads[i] = new Thread(thread, "Thread" + i); 1.93 + } 1.94 + for (int i = 0; i < threads.length; i++) { 1.95 + threads[i].start(); 1.96 + } 1.97 + for (int i = 0; i < threads.length; i++) { 1.98 + try { 1.99 + threads[i].join(); 1.100 + } 1.101 + catch (InterruptedException e) { 1.102 + continue; 1.103 + } 1.104 + } 1.105 + } 1.106 + } 1.107 + 1.108 + if (got_backward_time) { 1.109 + System.exit(97); 1.110 + } 1.111 + } 1.112 +}