/*
 * Copyright (c) 2020 Alibaba Group Holding Limited. 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. Alibaba designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

/*
 * @test
 * @library /lib/testlibrary
 * @summary test submit task to engine.
 * @requires os.family == "linux"
 * @run main/othervm -XX:+EnableCoroutine -Dcom.alibaba.wisp.transparentWispSwitch=true EngineExecutorTest
 */

import com.alibaba.wisp.engine.WispEngine;
import sun.misc.SharedSecrets;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;

import static jdk.testlibrary.Asserts.assertTrue;

public class EngineExecutorTest {
    public static void main(String[] args) throws Exception {
        testExecutor();
    }

    static AtomicReference<WispEngine> engine = new AtomicReference<>();
    private static void testExecutor() throws Exception {
        CountDownLatch latch = new CountDownLatch(1);
        Thread t = new Thread(() -> {
            engine.set(WispEngine.current());
            latch.countDown();
            while (true) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });

        t.start();
        latch.await();
        WispEngine e = engine.get();
        CountDownLatch latch1 = new CountDownLatch(100);
        for (int i = 0; i < 100; i++) {
            e.execute(latch1::countDown);
        }
        assertTrue(latch1.await(1, TimeUnit.SECONDS));
    }
}