AQSTest.java

/*
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 *
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 */

/*
 * @test
 * @summary Test AQS: CountDownLatch is implement by AQS
 * @requires os.family == "linux"
 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableCoroutine -Dcom.alibaba.wisp.transparentWispSwitch=true AQSTest
 */


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

import java.util.concurrent.CountDownLatch;

public class AQSTest {
    static CountDownLatch cd = new CountDownLatch(1);
    static CountDownLatch cd2 = new CountDownLatch(1);
    public static void main(String[] args) {
        WispEngine.dispatch(() -> {
            long start = System.currentTimeMillis();
            try {
                cd.await();
                assertInterval(start, 100, 5);
            } catch (InterruptedException e) {
                throw new Error();
            }
        });
        WispEngine.dispatch(() -> {
            long start = System.currentTimeMillis();
            try {
                cd2.await();
                assertInterval(start, 200, 5);
            } catch (InterruptedException e) {
                throw new Error();
            }
        });


        SharedSecrets.getWispEngineAccess().sleep(100);
        cd.countDown();
        SharedSecrets.getWispEngineAccess().sleep(100);
        cd2.countDown();
        SharedSecrets.getWispEngineAccess().sleep(5);
    }

    public static void assertInterval(long start, int diff, int bias) {
        if (Math.abs(System.currentTimeMillis() - start - diff) > bias)
            throw new Error("not wakeup expected");
    }
}