1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. 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 import java.io.File;

    26 import java.nio.file.Paths;

    27 import java.time.Duration;

    28 

    29 import jdk.test.lib.process.ProcessTools;

    30 import jdk.test.lib.process.OutputAnalyzer;

    31 

    32 /*

    33  * @test HandshakeTransitionTest

    34  * @summary This does a sanity test of the poll in the native wrapper.

    35  * @requires vm.debug

    36  * @library /testlibrary /test/lib

    37  * @build HandshakeTransitionTest

    38  * @run main/native HandshakeTransitionTest

    39  */

    40 

    41 public class HandshakeTransitionTest {

    42 

    43     public static native void someTime(int ms);

    44 

    45     public static void main(String[] args) throws Exception {

    46         String lib = System.getProperty("test.nativepath");

    47         ProcessBuilder pb =

    48             ProcessTools.createJavaProcessBuilder(

    49                     true,

    50                     "-Djava.library.path=" + lib,

    51                     "-XX:+SafepointALot",

    52                     "-XX:GuaranteedSafepointInterval=20",

    53                     "-Xlog:ergo*",

    54                     "-XX:ParallelGCThreads=1",

    55                     "-XX:ConcGCThreads=1",

    56                     "-XX:CICompilerCount=2",

    57                     "HandshakeTransitionTest$Test");

    58 

    59 

    60         OutputAnalyzer output = ProcessTools.executeProcess(pb);

    61         output.reportDiagnosticSummary();

    62         output.shouldHaveExitValue(0);

    63         output.stdoutShouldContain("JOINED");

    64     }

    65 

    66     static class Test implements Runnable {

    67         final static int testLoops = 2000;

    68         final static int testSleep = 1; //ms

    69 

    70         public static void main(String[] args) throws Exception {

    71             System.loadLibrary("HandshakeTransitionTest");

    72             Test test = new Test();

    73             Thread[] threads = new Thread[64];

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

    75                 threads[i] = new Thread(test);

    76                 threads[i].start();

    77             }

    78             for (Thread t : threads) {

    79                 t.join();

    80             }

    81             System.out.println("JOINED");

    82         }

    83 

    84         @Override

    85         public void run() {

    86             try {

    87                 for (int i = 0; i<testLoops ; i++) {

    88                     someTime(testSleep);

    89                 }

    90             } catch (Exception e) {

    91                 System.out.println(e.getMessage());

    92                 System.exit(1);

    93             }

    94         }

    95     }

    96 }