/*

 * Copyright (c) 2011, 2018, 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

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

 * questions.

 */

/*

 * @test

 *

 * @summary converted from VM Testbase vm/mlvm/meth/stress/gc/callSequencesDuringGC.

 * VM Testbase keywords: [feature_mlvm, nonconcurrent, quarantine]

 * VM Testbase readme:

 * DESCRIPTION

 *     The test verifies that MH logic is not affected by garbage collector and garbage collector

 *     correctly walks through references in MHs.

 *     The test has 3 threads:

 *     - Thread 1 creates sequences of MH (see vm/mlvm/mh/func/sequences test) and calls them

 *     - Thread 2 tries to overflow heap with different objects and arrays

 *     - Thread 3 periodically calls GC

 *

 * @library /vmTestbase

 *          /test/lib

 * @run driver jdk.test.lib.FileInstaller . .

 *

 * @comment build test class and indify classes

 * @build vm.mlvm.meth.stress.gc.callSequencesDuringGC.Test

 * @run driver vm.mlvm.share.IndifiedClassesBuilder

 *

 * @run main/othervm vm.mlvm.meth.stress.gc.callSequencesDuringGC.Test -stressIterationsFactor 1000

 */

package vm.mlvm.meth.stress.gc.callSequencesDuringGC;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import java.lang.invoke.MethodType;

import java.util.List;

import nsk.share.gc.gp.GarbageProducer;

import nsk.share.gc.gp.GarbageProducers;

import nsk.share.test.Stresser;

import vm.mlvm.meth.share.Argument;

import vm.mlvm.meth.share.MHTransformationGen;

import vm.mlvm.meth.share.RandomArgumentsGen;

import vm.mlvm.share.MlvmTest;

public class Test extends MlvmTest {

    public static void main(String[] args) {

        MlvmTest.launch(args);

    }

    @Override

    public boolean run() throws Throwable {

        GCThread dustmanThread = new GCThread();

        dustmanThread.setDaemon(true);

        dustmanThread.start();

        LitterThread litterThread = new LitterThread();

        litterThread.setDaemon(true);

        litterThread.start();

        Stresser stresser = createStresser();

        try {

            stresser.start(1);

            while (stresser.continueExecution()) {

                stresser.iteration();

                String s = "Ziggy";

                final MethodHandle mhM0 = MethodHandles.lookup().findVirtual(

                        String.class, "toString",

                        MethodType.methodType(String.class));

                Argument[] finalArgs = RandomArgumentsGen.createRandomArgs(true, mhM0.type());

                Argument retVal = Argument.fromValue(s);

                retVal.setPreserved(true);

                MHTransformationGen.callSequence(MHTransformationGen.createSequence(retVal, s, mhM0, finalArgs), true);

            }

            return true;

        } finally {

            stresser.finish();

        }

    }

    private static class LitterThread extends Thread {

        @Override

        public void run() {

            try {

                @SuppressWarnings("rawtypes")

                List<GarbageProducer> gpList = new GarbageProducers()

                        .getAllProducers();

                for (;;) {

                    @SuppressWarnings("rawtypes")

                    GarbageProducer gp = gpList.get(getRNG().nextInt(

                            gpList.size()));

                    gp.create(Runtime.getRuntime().maxMemory() / 100);

                    Thread.sleep(10);

                }

            } catch (InterruptedException e) {

            }

        }

    }

    private static class GCThread extends Thread {

        @Override

        public void run() {

            try {

                for (;;) {

                    System.gc();

                    Thread.sleep(50);

                }

            } catch (InterruptedException e) {

            }

        }

    }

}