1 /*

     2  * Copyright (c) 2018, 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

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    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

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    23 

    24 /*

    25  * @test TestParallelRefProc

    26  * @key gc

    27  * @summary Test defaults processing for -XX:+ParallelRefProcEnabled.

    28  * @library /test/lib

    29  * @run driver TestParallelRefProc

    30  */

    31 

    32 import java.util.Arrays;

    33 import java.util.ArrayList;

    34 

    35 import jdk.test.lib.process.OutputAnalyzer;

    36 import jdk.test.lib.process.ProcessTools;

    37 

    38 public class TestParallelRefProc {

    39 

    40     public static void main(String args[]) throws Exception {

    41         testFlag(new String[] { "-XX:+UseSerialGC" }, false);

    42         testFlag(new String[] { "-XX:+UseConcMarkSweepGC" }, false);

    43         testFlag(new String[] { "-XX:+UseParallelGC" }, false);

    44         testFlag(new String[] { "-XX:+UseG1GC", "-XX:ParallelGCThreads=1" }, false);

    45         testFlag(new String[] { "-XX:+UseG1GC", "-XX:ParallelGCThreads=2" }, true);

    46         testFlag(new String[] { "-XX:+UseG1GC", "-XX:-ParallelRefProcEnabled", "-XX:ParallelGCThreads=2" }, false);

    47     }

    48 

    49     private static final String parallelRefProcEnabledPattern =

    50         " *bool +ParallelRefProcEnabled *= *true +\\{product\\}";

    51 

    52     private static final String parallelRefProcDisabledPattern =

    53         " *bool +ParallelRefProcEnabled *= *false +\\{product\\}";

    54 

    55     private static void testFlag(String[] args, boolean expectedTrue) throws Exception {

    56         ArrayList<String> result = new ArrayList<String>();

    57         result.addAll(Arrays.asList(args));

    58         result.add("-XX:+PrintFlagsFinal");

    59         result.add("-version");

    60         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(result.toArray(new String[0]));

    61 

    62         OutputAnalyzer output = new OutputAnalyzer(pb.start());

    63 

    64         output.shouldHaveExitValue(0);

    65 

    66         final String expectedPattern = expectedTrue ? parallelRefProcEnabledPattern : parallelRefProcDisabledPattern;

    67 

    68         String value = output.firstMatch(expectedPattern);

    69         if (value == null) {

    70             throw new RuntimeException(

    71                 Arrays.toString(args) + " didn't set ParallelRefProcEnabled to " + expectedTrue + " as expected");

    72         }

    73     }

    74 }