1 /*

     2  * Copyright (c) 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 import java.util.ArrayList;

    27 import java.util.Collections;

    28 import java.util.List;

    29 import jdk.test.lib.Platform;

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

    31 

    32 /**

    33  * Helper class for adding options to child processes that should be

    34  * used by all of the argument tests in this package.  The default

    35  * options are added at the front, to allow them to be overridden by

    36  * explicit options from any particular test.

    37  */

    38 

    39 public final class GCArguments {

    40 

    41     // Avoid excessive execution time.

    42     static private void disableZapUnusedHeapArea(List<String> arguments) {

    43         // Develop option, only available in debug builds.

    44         if (Platform.isDebugBuild()) {

    45             arguments.add("-XX:-ZapUnusedHeapArea");

    46         }

    47     }

    48 

    49     // Avoid excessive execution time.

    50     static private void disableVerifyBeforeExit(List<String> arguments) {

    51         // Diagnostic option, default enabled in debug builds.

    52         if (Platform.isDebugBuild()) {

    53             arguments.add("-XX:-VerifyBeforeExit");

    54         }

    55     }

    56 

    57     static private void addDefaults(List<String> arguments) {

    58         disableZapUnusedHeapArea(arguments);

    59         disableVerifyBeforeExit(arguments);

    60     }

    61 

    62     static private String[] withDefaults(String[] arguments) {

    63         List<String> augmented = new ArrayList<String>();

    64         addDefaults(augmented);

    65         Collections.addAll(augmented, arguments);

    66         return augmented.toArray(new String[augmented.size()]);

    67     }

    68 

    69     static public ProcessBuilder createJavaProcessBuilder(String... arguments) {

    70         return createJavaProcessBuilder(false, arguments);

    71     }

    72 

    73     static public ProcessBuilder createJavaProcessBuilder(boolean addTestVmAndJavaOptions,

    74                                                           String... arguments) {

    75         return ProcessTools.createJavaProcessBuilder(addTestVmAndJavaOptions,

    76                                                      withDefaults(arguments));

    77     }

    78 

    79 }