Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/compiler/6863420/Test.java
test/compiler/6863420/Test.java
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| 1 /* | |
| 2 * Copyright 2009 D.E. Shaw. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 /** | |
| 26 * @test | |
| 27 * @bug 6863420 | |
| 28 * @summary os::javaTimeNanos() go backward on Solaris x86 | |
| 29 * | |
| 30 * Notice the internal timeout in timeout thread Test.TOT. | |
| 31 * @run main/othervm/timeout=300 Test | |
| 32 */ | |
| 33 | |
| 34 public class Test { | |
| 35 | |
| 36 static final int INTERNAL_TIMEOUT=240; | |
| 37 static class TOT extends Thread { | |
| 38 public void run() { | |
| 39 try { | |
| 40 Thread.sleep(INTERNAL_TIMEOUT*1000); | |
| 41 } catch (InterruptedException ex) { | |
| 42 } | |
| 43 done = true; | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 static long value = 0; | |
| 48 static boolean got_backward_time = false; | |
| 49 static volatile boolean done = false; | |
| 50 | |
| 51 public static void main(String args[]) { | |
| 52 final int count = 100000; | |
| 53 | |
| 54 TOT tot = new TOT(); | |
| 55 tot.setDaemon(true); | |
| 56 tot.start(); | |
| 57 | |
| 58 for (int numThreads = 1; !done && numThreads <= 32; numThreads++) { | |
| 59 final int numRuns = 1; | |
| 60 for (int t=1; t <= numRuns; t++) { | |
| 61 final int curRun = t; | |
| 62 | |
| 63 System.out.println("Spawning " + numThreads + " threads"); | |
| 64 final Thread threads[] = new Thread[numThreads]; | |
| 65 for (int i = 0; i < threads.length; i++) { | |
| 66 Runnable thread = | |
| 67 new Runnable() { | |
| 68 public void run() { | |
| 69 for (long l = 0; !done && l < 100000; l++) { | |
| 70 final long start = System.nanoTime(); | |
| 71 if (value == 12345678) { | |
| 72 System.out.println("Wow!"); | |
| 73 } | |
| 74 final long end = System.nanoTime(); | |
| 75 final long time = end - start; | |
| 76 value += time; | |
| 77 if (time < 0) { | |
| 78 System.out.println( | |
| 79 "Backwards: " + | |
| 80 "start=" + start + " " + | |
| 81 "end=" + end + " " + | |
| 82 "time= " + time | |
| 83 ); | |
| 84 got_backward_time = true; | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 }; | |
| 89 threads[i] = new Thread(thread, "Thread" + i); | |
| 90 } | |
| 91 for (int i = 0; i < threads.length; i++) { | |
| 92 threads[i].start(); | |
| 93 } | |
| 94 for (int i = 0; i < threads.length; i++) { | |
| 95 try { | |
| 96 threads[i].join(); | |
| 97 } | |
| 98 catch (InterruptedException e) { | |
| 99 continue; | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 if (got_backward_time) { | |
| 106 System.exit(97); | |
| 107 } | |
| 108 } | |
| 109 } |
