test/jdk/jdk/jfr/event/runtime/TestThreadSleepEvent.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * 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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package jdk.jfr.event.runtime;

import static jdk.test.lib.Asserts.assertTrue;

import java.time.Duration;
import java.util.List;

import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.test.lib.jfr.EventNames;
import jdk.test.lib.jfr.Events;

/*
 * @test
 * @key jfr
 * @library /test/lib
 * @run main/othervm jdk.jfr.event.runtime.TestThreadSleepEvent
 */
public class TestThreadSleepEvent {

    private final static String EVENT_NAME = EventNames.ThreadSleep;
    // Need to set the sleep time quite high (47 ms) since the sleep
    // time on Windows has been proved unreliable.
    // See bug 6313903
    private final static Long SLEEP_TIME_MS = new Long(47);

    public static void main(String[] args) throws Throwable {
        Recording recording = new Recording();
        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
        recording.start();
        Thread.sleep(SLEEP_TIME_MS);
        recording.stop();

        List<RecordedEvent> events = Events.fromRecording(recording);
        boolean isAnyFound = false;
        for (RecordedEvent event : events) {
            if (event.getThread().getJavaThreadId() == Thread.currentThread().getId()) {
                System.out.println("Event:" + event);
                isAnyFound = true;
                Events.assertField(event, "time").equal(SLEEP_TIME_MS);
            }
        }
        assertTrue(isAnyFound, "No matching events found");
    }

}