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 }