/*

 * Copyright (c) 2015, 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

 * @bug 8137167

 * @summary Tests jcmd to be able to add a lot of huge directive files with

 *          parallel executed jcmds until timeout has reached

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

 * @library /testlibrary /test/lib ../share /

 * @build compiler.compilercontrol.jcmd.StressAddMultiThreadedTest

 *        pool.sub.* pool.subpack.* sun.hotspot.WhiteBox

 *        compiler.testlibrary.CompilerUtils

 *        compiler.compilercontrol.share.actions.*

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run driver compiler.compilercontrol.jcmd.StressAddMultiThreadedTest

 */

package compiler.compilercontrol.jcmd;

import jdk.test.lib.dcmd.PidJcmdExecutor;

import java.util.concurrent.ArrayBlockingQueue;

import java.util.concurrent.BlockingQueue;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.ThreadPoolExecutor;

import java.util.concurrent.TimeUnit;

public class StressAddMultiThreadedTest extends StressAddJcmdBase {

    private static final int THREADS = Integer.getInteger(

            "compiler.compilercontrol.jcmd.StressAddMultiThreadedTest.threads",

            5);

    private volatile int commands = Integer.getInteger(

            "compiler.compilercontrol.jcmd.StressAddMultiThreadedTest.commands",

            20);

    private final BlockingQueue<Runnable> queue;

    private final ExecutorService executor;

    public StressAddMultiThreadedTest() {

        queue = new ArrayBlockingQueue<>(THREADS);

        executor = new ThreadPoolExecutor(THREADS, THREADS, 100,

                TimeUnit.MILLISECONDS, queue,

                new ThreadPoolExecutor.CallerRunsPolicy());

    }

    public static void main(String[] args) {

        new StressAddMultiThreadedTest().test();

    }

    @Override

    protected boolean makeConnection(int pid) {

        executor.submit(() -> new PidJcmdExecutor(String.valueOf(pid))

                .execute(nextCommand()));

        return (--commands != 0);

    }

    @Override

    protected void finish() {

        executor.shutdown();

        try {

            executor.awaitTermination(10, TimeUnit.SECONDS);

        } catch (InterruptedException e) {

            throw new Error("Interrupted while awaiting for termination: " + e,

                    e);

        }

        executor.shutdownNow();

    }

}