1 /*
   2  * Copyright (c) 2017 Red Hat, Inc. and/or its affiliates.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 /**
  25  * @test TestHeapDump
  26  * @summary Tests JVMTI heap dumps
  27  * @compile TestHeapDump.java
  28  * @run main/othervm/native -agentlib:TestHeapDump -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive -XX:-UseCompressedOops TestHeapDump
  29  */
  30 
  31 public class TestHeapDump {
  32 
  33     private static final int NUM_ITER = 10000;
  34 
  35     static {
  36         try {
  37             System.loadLibrary("TestHeapDump");
  38         } catch (UnsatisfiedLinkError ule) {
  39             System.err.println("Could not load TestHeapDump library");
  40             System.err.println("java.library.path: "
  41                 + System.getProperty("java.library.path"));
  42             throw ule;
  43         }
  44     }
  45 
  46     native static int heapdump();
  47 
  48     public static void main(String args[]) {
  49         TestHeapDump[] array = new TestHeapDump[5];
  50         for (int i = 0; i < 5; i++) {
  51             array[i] = new TestHeapDump();
  52         }
  53         for (int i = 0; i < NUM_ITER; i++) {
  54             int numObjs = heapdump();
  55             if (numObjs != 5) throw new RuntimeException();
  56         }
  57     }
  58 }