1 /*
   2  * Copyright (c) 2005, 2015, 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 import java.io.File;
  25 import java.util.Arrays;
  26 
  27 import static jdk.testlibrary.Asserts.*;
  28 import jdk.testlibrary.JDKToolLauncher;
  29 import jdk.testlibrary.OutputAnalyzer;
  30 import jdk.testlibrary.ProcessTools;
  31 
  32 /*
  33  * @test
  34  * @bug 6321286
  35  * @summary Unit test for jmap utility
  36  * @library /lib/testlibrary
  37  * @modules java.management
  38  * @build jdk.testlibrary.*
  39  * @run main BasicJMapTest
  40  */
  41 public class BasicJMapTest {
  42 
  43     private static ProcessBuilder processBuilder = new ProcessBuilder();
  44 
  45     public static void main(String[] args) throws Exception {
  46         testHisto();
  47         testHistoLive();
  48         testDump();
  49         testDumpLive();
  50     }
  51 
  52     private static void testHisto() throws Exception {
  53         OutputAnalyzer output = jmap("-histo");
  54         output.shouldHaveExitValue(0);
  55     }
  56 
  57     private static void testHistoLive() throws Exception {
  58         OutputAnalyzer output = jmap("-histo:live");
  59         output.shouldHaveExitValue(0);
  60     }
  61 
  62     private static void testDump() throws Exception {
  63         File dump = new File("java_pid$" + ProcessTools.getProcessId() + ".hprof");
  64         OutputAnalyzer output = jmap("-dump:format=b,file=" + dump.getName());
  65         output.shouldHaveExitValue(0);
  66         output.shouldContain("Heap dump file created");
  67         verifyDumpFile(dump);
  68     }
  69 
  70     private static void testDumpLive() throws Exception {
  71         File dump = new File("java_pid$" + ProcessTools.getProcessId() + ".hprof");
  72         OutputAnalyzer output = jmap("-dump:live,format=b,file=" + dump.getName());
  73         output.shouldHaveExitValue(0);
  74         output.shouldContain("Heap dump file created");
  75         verifyDumpFile(dump);
  76     }
  77 
  78     private static void verifyDumpFile(File dump) {
  79         assertTrue(dump.exists() && dump.isFile(), "Could not create dump file");
  80         dump.delete();
  81     }
  82 
  83     private static OutputAnalyzer jmap(String... toolArgs) throws Exception {
  84         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jmap");
  85         launcher.addVMArg("-XX:+UsePerfData");
  86         if (toolArgs != null) {
  87             for (String toolArg : toolArgs) {
  88                 launcher.addToolArg(toolArg);
  89             }
  90         }
  91         launcher.addToolArg(Integer.toString(ProcessTools.getProcessId()));
  92 
  93         processBuilder.command(launcher.getCommand());
  94         System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
  95         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
  96         System.out.println(output.getOutput());
  97 
  98         return output;
  99     }
 100 
 101 }