1 /*
   2  * Copyright (c) 2013, 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.
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  23 
  24 /*
  25  * @test CompressedClassSpaceSizeInJmapHeap
  26  * @bug 8004924
  27  * @summary Checks that jmap -heap contains the flag CompressedClassSpaceSize
  28  * @library /testlibrary
  29  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:CompressedClassSpaceSize=50m CompressedClassSpaceSizeInJmapHeap
  30  */
  31 
  32 import com.oracle.java.testlibrary.*;
  33 import java.nio.charset.Charset;
  34 import java.util.List;
  35 
  36 public class CompressedClassSpaceSizeInJmapHeap {
  37     public static void main(String[] args) throws Exception {
  38         if (!Platform.is64bit()) {
  39             // Compressed Class Space is only available on 64-bit JVMs
  40             return;
  41         }
  42         if (!Platform.shouldSAAttach()) {
  43             System.out.println("SA attach not expected to work - test skipped.");
  44             return;
  45         }
  46 
  47         String pid = Integer.toString(ProcessTools.getProcessId());
  48 
  49         JDKToolLauncher jmap = JDKToolLauncher.create("jmap")
  50                                               .addToolArg("-heap")
  51                                               .addToolArg(pid);
  52         ProcessBuilder pb = new ProcessBuilder(jmap.getCommand());
  53 
  54         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  55         output.shouldHaveExitValue(0);
  56         output.shouldContain("CompressedClassSpaceSize = 52428800 (50.0MB)");
  57     }
  58 }