jdk8-mips64-public/hotspot: test/compiler/6863420/Test.java@c18cbe5936b8

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

     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  */

    25 /**

    26  * @test

    27  * @bug 6863420

    28  * @summary os::javaTimeNanos() go backward on Solaris x86

    29  *

    30  * @run main/othervm Test

    31  */

    33 public class Test {

    34     static long value = 0;

    35     static boolean got_backward_time = false;

    37     public static void main(String args[]) {

    38         final int count = 100000;

    40         for (int numThreads = 1; numThreads <= 32; numThreads++) {

    41             final int numRuns = 1;

    42             for (int t=1; t <= numRuns; t++) {

    43                 final int curRun = t;

    45                 System.out.println("Spawning " + numThreads + " threads");

    46                 final Thread threads[] = new Thread[numThreads];

    47                 for (int i = 0; i < threads.length; i++) {

    48                     Runnable thread =

    49                         new Runnable() {

    50                             public void run() {

    51                                 for (long l = 0; l < 100000; l++) {

    52                                     final long start = System.nanoTime();

    53                                     if (value == 12345678) {

    54                                         System.out.println("Wow!");

    55                                     }

    56                                     final long end = System.nanoTime();

    57                                     final long time = end - start;

    58                                     value += time;

    59                                     if (time < 0) {

    60                                         System.out.println(

    61                                             "Backwards: " +

    62                                             "start=" + start + " " +

    63                                             "end=" + end + " " +

    64                                             "time= " + time

    65                                         );

    66                                         got_backward_time = true;

    67                                     }

    68                                 }

    69                             }

    70                         };

    71                     threads[i] = new Thread(thread, "Thread" + i);

    72                 }

    73                 for (int i = 0; i < threads.length; i++) {

    74                     threads[i].start();

    75                 }

    76                 for (int i = 0; i < threads.length; i++) {

    77                     try {

    78                         threads[i].join();

    79                     }

    80                     catch (InterruptedException e) {

    81                         continue;

    82                     }

    83                 }

    84             }

    85         }

    87         if (got_backward_time) {

    88             System.exit(97);

    89         }

    90     }

    91 }

Mercurial > jdk8-mips64-public > hotspot / file revision