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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.api.consumer.recordingstream;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
import jdk.jfr.Event;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingStream;
import jdk.test.lib.jfr.Events;
/**
* @test
* @summary Tests that events are not emitted in handlers
* @key jfr
* @requires vm.hasJFR
* @library /test/lib
* @run main/othervm jdk.jfr.api.consumer.recordingstream.TestRecursive
*/
public class TestRecursive {
public static class NotRecorded extends Event {
}
public static class Recorded extends Event {
}
public static void main(String... args) throws Exception {
testAsync();
testSync();
}
private static void testSync() throws Exception {
try (Recording r = new Recording()) {
r.start();
Recorded e1 = new Recorded();
e1.commit();
try (RecordingStream rs = new RecordingStream()) {
rs.onEvent(e -> {
NotRecorded e2 = new NotRecorded();
e2.commit();
});
CompletableFuture.runAsync(() -> {
r.start();
});
}
Recorded e3 = new Recorded();
e3.commit();
r.stop();
List<RecordedEvent> events = Events.fromRecording(r);
if (count(events, NotRecorded.class) != 0) {
throw new Exception("Expected 0 NotRecorded events");
}
if (count(events, Recorded.class) != 2) {
throw new Exception("Expected 2 Recorded events");
}
}
}
private static int count(List<RecordedEvent> events, Class<?> eventClass) {
int count = 0;
for (RecordedEvent e : events) {
if (e.getEventType().getName().equals(eventClass.getName())) {
count++;
}
}
return count;
}
private static void testAsync() throws InterruptedException, Exception {
CountDownLatch latchOne = new CountDownLatch(1);
CountDownLatch latchTwo = new CountDownLatch(2);
AtomicBoolean fail = new AtomicBoolean();
try (RecordingStream r = new RecordingStream()) {
r.onEvent(e -> {
System.out.println(e);
NotRecorded event = new NotRecorded();
event.commit();
if (e.getEventType().getName().equals(Recorded.class.getName())) {
latchOne.countDown();
latchTwo.countDown();
}
if (e.getEventType().getName().equals(NotRecorded.class.getName())) {
fail.set(true);
}
});
r.startAsync();
Recorded e1 = new Recorded();
e1.commit();
latchOne.await();
Recorded e2 = new Recorded();
e2.commit();
latchTwo.await();
if (fail.get()) {
throw new Exception("Unexpected event found");
}
}
}
}