1 /*
   2  * Copyright (c) 2018, Google 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 package MyPackage;
  25 
  26 /**
  27  * @test
  28  * @summary Verifies the JVMTI Heap Monitor does not work without the required capability.
  29  * @compile HeapMonitorNoCapabilityTest.java
  30  * @run main/othervm/native -agentlib:HeapMonitor MyPackage.HeapMonitorNoCapabilityTest
  31  */
  32 
  33 public class HeapMonitorNoCapabilityTest {
  34   static {
  35     try {
  36       System.loadLibrary("HeapMonitor");
  37     } catch (UnsatisfiedLinkError ule) {
  38       System.err.println("Could not load HeapMonitor library");
  39       System.err.println("java.library.path: "
  40           + System.getProperty("java.library.path"));
  41       throw ule;
  42     }
  43   }
  44 
  45   private native static int allSamplingMethodsFail();
  46 
  47   public static void main(String[] args) {
  48     int result = allSamplingMethodsFail();
  49 
  50     if (result == 0) {
  51       throw new RuntimeException("Some methods could be called without a capability.");
  52     }
  53   }
  54 }