1 /*
   2  * Copyright (c) 2014, 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  * @summary run NMT baseline, allocate memory and verify output from summary.diff
  27  * @key nmt jcmd
  28  * @library /testlibrary /testlibrary/whitebox
  29  * @build JcmdSummaryDiff
  30  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  31  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary JcmdSummaryDiff
  32  */
  33 
  34 import com.oracle.java.testlibrary.*;
  35 
  36 import sun.hotspot.WhiteBox;
  37 
  38 public class JcmdSummaryDiff {
  39 
  40     public static WhiteBox wb = WhiteBox.getWhiteBox();
  41 
  42     public static void main(String args[]) throws Exception {
  43         ProcessBuilder pb = new ProcessBuilder();
  44         OutputAnalyzer output;
  45         // Grab my own PID
  46         String pid = Integer.toString(ProcessTools.getProcessId());
  47 
  48         long commitSize = 128 * 1024;
  49         long reserveSize = 256 * 1024;
  50         long addr;
  51 
  52         // Run 'jcmd <pid> VM.native_memory baseline=true'
  53         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline=true"});
  54         pb.start().waitFor();
  55 
  56         output = new OutputAnalyzer(pb.start());
  57         output.shouldContain("Baseline succeeded");
  58 
  59         addr = wb.NMTReserveMemory(reserveSize);
  60         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});
  61 
  62         output = new OutputAnalyzer(pb.start());
  63         output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)");
  64 
  65         wb.NMTCommitMemory(addr, commitSize);
  66         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});
  67 
  68         output = new OutputAnalyzer(pb.start());
  69         output.shouldContain("Test (reserved=256KB +256KB, committed=128KB +128KB)");
  70 
  71         wb.NMTUncommitMemory(addr, commitSize);
  72         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});
  73 
  74         output = new OutputAnalyzer(pb.start());
  75         output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)");
  76 
  77         wb.NMTReleaseMemory(addr, reserveSize);
  78         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});
  79 
  80         output = new OutputAnalyzer(pb.start());
  81         output.shouldNotContain("Test (reserved=");
  82     }
  83 }