1 /*
   2  * Copyright (c) 2018, 2019, 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 package gc.arguments;
  25 
  26 /*
  27  * @test TestParallelRefProc
  28  * @key gc
  29  * @requires vm.gc.Serial & vm.gc.ConcMarkSweep & vm.gc.Parallel & vm.gc.G1
  30  * @summary Test defaults processing for -XX:+ParallelRefProcEnabled.
  31  * @library /test/lib
  32  * @run driver gc.arguments.TestParallelRefProc
  33  */
  34 
  35 import java.util.Arrays;
  36 import java.util.ArrayList;
  37 
  38 import jdk.test.lib.process.OutputAnalyzer;
  39 import jdk.test.lib.process.ProcessTools;
  40 
  41 public class TestParallelRefProc {
  42 
  43     public static void main(String args[]) throws Exception {
  44         testFlag(new String[] { "-XX:+UseSerialGC" }, false);
  45         testFlag(new String[] { "-XX:+UseConcMarkSweepGC" }, false);
  46         testFlag(new String[] { "-XX:+UseParallelGC" }, false);
  47         testFlag(new String[] { "-XX:+UseG1GC", "-XX:ParallelGCThreads=1" }, false);
  48         testFlag(new String[] { "-XX:+UseG1GC", "-XX:ParallelGCThreads=2" }, true);
  49         testFlag(new String[] { "-XX:+UseG1GC", "-XX:-ParallelRefProcEnabled", "-XX:ParallelGCThreads=2" }, false);
  50     }
  51 
  52     private static final String parallelRefProcEnabledPattern =
  53         " *bool +ParallelRefProcEnabled *= *true +\\{product\\}";
  54 
  55     private static final String parallelRefProcDisabledPattern =
  56         " *bool +ParallelRefProcEnabled *= *false +\\{product\\}";
  57 
  58     private static void testFlag(String[] args, boolean expectedTrue) throws Exception {
  59         ArrayList<String> result = new ArrayList<String>();
  60         result.addAll(Arrays.asList(args));
  61         result.add("-XX:+PrintFlagsFinal");
  62         result.add("-version");
  63         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(result.toArray(new String[0]));
  64 
  65         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  66 
  67         output.shouldHaveExitValue(0);
  68 
  69         final String expectedPattern = expectedTrue ? parallelRefProcEnabledPattern : parallelRefProcDisabledPattern;
  70 
  71         String value = output.firstMatch(expectedPattern);
  72         if (value == null) {
  73             throw new RuntimeException(
  74                 Arrays.toString(args) + " didn't set ParallelRefProcEnabled to " + expectedTrue + " as expected");
  75         }
  76     }
  77 }