/*

 * Copyright (c) 2019, 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 TestObjIterWithHeapDump

 * @summary Test heap dump triggered heap object iteration

 * @key gc

 * @bug 8225014

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

 * @library /test/lib

 * @run driver TestObjItrWithHeapDump

 */

import java.util.*;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

public class TestObjItrWithHeapDump {

    public static void testWith(String... args) throws Exception {

        String[] cmds = Arrays.copyOf(args, args.length + 2);

        cmds[args.length] = TestObjItrWithHeapDump.class.getName();

        cmds[args.length + 1] = "test";

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);

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

        output.shouldHaveExitValue(0);

        output.shouldContain("Class Histogram (before full gc)");

        output.shouldContain("Class Histogram (after full gc)");

    }

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

        if (args.length > 0 && args[0].equals("test")) {

            System.gc();

            System.exit(0);

        }

        String[][][] modeHeuristics = new String[][][] {

             {{"normal"},    {"adaptive", "compact", "static", "aggressive"}},

             {{"traversal"}, {"adaptive", "aggressive"}},

             {{"passive"},   {"passive"}}

        };

        for (String[][] mh : modeHeuristics) {

            String mode = mh[0][0];

            String[] heuristics = mh[1];

            for (String h : heuristics) {

                testWith("-XX:+UnlockDiagnosticVMOptions",

                         "-XX:+UnlockExperimentalVMOptions",

                         "-XX:+UseShenandoahGC",

                         "-XX:-ShenandoahDegeneratedGC",

                         "-XX:ShenandoahGCMode=" + mode,

                         "-XX:ShenandoahGCHeuristics=" + h,

                         "-Xlog:gc+classhisto=trace",

                         "-XX:-ExplicitGCInvokesConcurrent",

                         "-Xmx512M"

                );

            }

        }

    }

}