IsAliveTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation. Alibaba designates this
 * particular file as subject to the "Classpath" exception as provided
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 * 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).
 *
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/*
 * @test
 * @summary test thread.isAlive() of wispTask
 * @requires os.family == "linux"
 * @library /lib/testlibrary
 * @run main/othervm -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());
    }
}