1 /*
   2  * Copyright (c) 2013, 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  * @test
  26  * @key nmt jcmd
  27  * @summary Verify that jcmd correctly reports that NMT is not enabled
  28  * @library /testlibrary
  29  * First run without enabling NMT
  30  * @run main/othervm JcmdWithNMTDisabled
  31  * Then run with explicitly disabling NMT, should not be any difference
  32  * @run main/othervm -XX:NativeMemoryTracking=off JcmdWithNMTDisabled
  33  */
  34 
  35 import com.oracle.java.testlibrary.*;
  36 
  37 public class JcmdWithNMTDisabled {
  38   static ProcessBuilder pb = new ProcessBuilder();
  39   static String pid;
  40 
  41   public static void main(String args[]) throws Exception {
  42     // Grab my own PID
  43     pid = Integer.toString(ProcessTools.getProcessId());
  44 
  45     jcmdCommand("summary");
  46     jcmdCommand("detail");
  47     jcmdCommand("baseline");
  48     jcmdCommand("summary.diff");
  49     jcmdCommand("detail.diff");
  50     jcmdCommand("scale=GB");
  51     jcmdCommand("shutdown");
  52   }
  53 
  54   // Helper method for invoking different jcmd calls, all should fail with the same message saying NMT is not enabled
  55   public static void jcmdCommand(String command) throws Exception {
  56 
  57     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", command});
  58     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  59 
  60     // Verify that jcmd reports that NMT is not enabled
  61     output.shouldContain("Native memory tracking is not enabled");
  62   }
  63 }