/*

 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.

 *

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

/*

 * @test TestHeuristicsUnlock

 * @summary Test that Shenandoah heuristics are unlocked properly

 * @key gc

 * @requires vm.gc.Shenandoah & !vm.graal.enabled

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run driver TestHeuristicsUnlock

 */

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

public class TestHeuristicsUnlock {

    enum Mode {

        PRODUCT,

        DIAGNOSTIC,

        EXPERIMENTAL,

    }

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

        testWith("-XX:ShenandoahGCHeuristics=adaptive", Mode.PRODUCT);

        testWith("-XX:ShenandoahGCHeuristics=static", Mode.PRODUCT);

        testWith("-XX:ShenandoahGCHeuristics=compact", Mode.PRODUCT);

        testWith("-XX:ShenandoahGCMode=traversal", Mode.PRODUCT);

        testWith("-XX:ShenandoahGCHeuristics=aggressive", Mode.DIAGNOSTIC);

        testWith("-XX:ShenandoahGCHeuristics=passive", Mode.DIAGNOSTIC);

    }

    private static void testWith(String h, Mode mode) throws Exception {

        if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test

            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

                    "-XX:-UnlockDiagnosticVMOptions",

                    "-XX:-UnlockExperimentalVMOptions",

                    "-XX:+UseShenandoahGC",

                    h,

                    "-version"

            );

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

            switch (mode) {

                case PRODUCT:

                    output.shouldHaveExitValue(0);

                    break;

                case DIAGNOSTIC:

                case EXPERIMENTAL:

                    output.shouldNotHaveExitValue(0);

                    break;

            }

        }

        if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test

            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

                    "-XX:+UnlockDiagnosticVMOptions",

                    "-XX:-UnlockExperimentalVMOptions",

                    "-XX:+UseShenandoahGC",

                    h,

                    "-version"

            );

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

            switch (mode) {

                case PRODUCT:

                case DIAGNOSTIC:

                    output.shouldHaveExitValue(0);

                    break;

                case EXPERIMENTAL:

                    output.shouldNotHaveExitValue(0);

                    break;

            }

        }

        {

            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

                    "-XX:-UnlockDiagnosticVMOptions",

                    "-XX:+UnlockExperimentalVMOptions",

                    "-XX:+UseShenandoahGC",

                    h,

                    "-version"

            );

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

            switch (mode) {

                case PRODUCT:

                case EXPERIMENTAL:

                    output.shouldHaveExitValue(0);

                    break;

                case DIAGNOSTIC:

                    output.shouldNotHaveExitValue(0);

                    break;

            }

        }

    }

}