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 ClassMetaspaceSizeInJmapHeap
  26  * @bug 8004924
  27  * @summary Checks that jmap -heap contains the flag ClassMetaspaceSize
  28  * @library /testlibrary /gc/testlibrary
  29  * @run main/othervm -XX:ClassMetaspaceSize=50m ClassMetaspaceSizeInJmapHeap
  30  */
  31 
  32 import com.oracle.java.testlibrary.*;
  33 import com.oracle.java.testlibrary.gc.*;
  34 
  35 import java.nio.file.*;
  36 import java.io.File;
  37 import java.nio.charset.Charset;
  38 import java.util.List;
  39 
  40 public class ClassMetaspaceSizeInJmapHeap {
  41     public static void main(String[] args) throws Exception {
  42         String pid = Integer.toString(ProcessTools.getProcessId());
  43 
  44         JmapLauncher jmap = new JmapLauncher();
  45         jmap.setJmapArguments("-heap", pid);
  46 
  47         ProcessBuilder pb = new ProcessBuilder(jmap.getCommand());
  48 
  49         File out = new File("ClassMetaspaceSizeInJmapHeap.stdout.txt");
  50         pb.redirectOutput(out);
  51 
  52         File err = new File("ClassMetaspaceSizeInJmapHeap.stderr.txt");
  53         pb.redirectError(err);
  54 
  55         run(pb);
  56 
  57         OutputAnalyzer output = new OutputAnalyzer(read(out));
  58         output.shouldContain("ClassMetaspaceSize = 52428800 (50.0MB)");
  59         out.delete();
  60     }
  61 
  62     private static void run(ProcessBuilder pb) throws Exception {
  63         Process p = pb.start();
  64         p.waitFor();
  65         int exitValue = p.exitValue();
  66         if (exitValue != 0) {
  67             throw new Exception("jmap -heap exited with error code: " + exitValue);
  68         }
  69     }
  70 
  71     private static String read(File f) throws Exception {
  72         Path p = f.toPath();
  73         List<String> lines = Files.readAllLines(p, Charset.defaultCharset());
  74 
  75         StringBuilder sb = new StringBuilder();
  76         for (String line : lines) {
  77             sb.append(line).append('\n');
  78         }
  79         return sb.toString();
  80     }
  81 }