/*
 * 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
 * @summary test thread.isAlive() of wispTask
 * @requires os.family == "linux"
 * @library /lib/testlibrary
 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableCoroutine -Dcom.alibaba.wisp.transparentWispSwitch=true IsAliveTest
 */

import com.alibaba.wisp.engine.WispEngine;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;

import static jdk.testlibrary.Asserts.assertFalse;
import static jdk.testlibrary.Asserts.assertTrue;


public class IsAliveTest {
    public static void main(String[] args) throws Exception {
        AtomicBoolean isAlive = new AtomicBoolean();
        AtomicReference<Thread> t = new AtomicReference<>();
        final CountDownLatch cond = new CountDownLatch(1);

        WispEngine.dispatch(() -> {
            t.set(Thread.currentThread());
            isAlive.set(t.get().isAlive());
            cond.countDown();
        });
        try {
            cond.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        assertTrue(isAlive.get());
        assertFalse(t.get().isAlive());
    }
}