/*

 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

package gc.arguments;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import jdk.test.lib.Platform;

import jdk.test.lib.process.ProcessTools;

/**

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

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

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

 * explicit options from any particular test.

 */

public final class GCArguments {

    // Avoid excessive execution time.

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

        // Develop option, only available in debug builds.

        if (Platform.isDebugBuild()) {

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

        }

    }

    // Avoid excessive execution time.

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

        // Diagnostic option, default enabled in debug builds.

        if (Platform.isDebugBuild()) {

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

        }

    }

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

        disableZapUnusedHeapArea(arguments);

        disableVerifyBeforeExit(arguments);

    }

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

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

        addDefaults(augmented);

        Collections.addAll(augmented, arguments);

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

    }

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

        return createJavaProcessBuilder(false, arguments);

    }

    static public ProcessBuilder createJavaProcessBuilder(boolean addTestVmAndJavaOptions,

                                                          String... arguments) {

        return ProcessTools.createJavaProcessBuilder(addTestVmAndJavaOptions,

                                                     withDefaults(arguments));

    }

}