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8247266: Speed up test\jdk\jdk\jfr\event\gc\detailed\TestZUncommitEvent.java

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Reviewed-by: mgronlun
This commit is contained in:
Erik Gahlin 2020-06-10 13:01:49 +02:00
parent 1dc79293a0
commit 7e3d4f8c4f
1 changed files with 14 additions and 10 deletions
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24
test/jdk/jdk/jfr/event/gc/detailed/TestZUncommitEvent.java
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@ -26,10 +26,12 @@
package jdk.jfr.event.gc.detailed;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import static gc.testlibrary.Allocation.blackHole;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingStream;
import jdk.test.lib.jfr.EventNames;
import jdk.test.lib.jfr.Events;
@ -43,10 +45,17 @@ import jdk.test.lib.jfr.Events;
public class TestZUncommitEvent {
public static void main(String[] args) throws Exception {
try (Recording recording = new Recording()) {
// Activate the event we are interested in and start recording
recording.enable(EventNames.ZUncommit);
recording.start();
List<RecordedEvent> events = new CopyOnWriteArrayList<>();
try (RecordingStream stream = new RecordingStream()) {
// Activate the event
stream.enable(EventNames.ZUncommit);
stream.onEvent(e -> {
// Got event, close stream
events.add(e);
stream.close();
});
// Start recording
stream.startAsync();
// Allocate a large object, to force heap usage above min heap size
blackHole(new byte[32 * 1024 * 1024]);
@ -54,13 +63,8 @@ public class TestZUncommitEvent {
// Collect
System.gc();
// Wait for uncommit to happen
Thread.sleep(10 * 1000);
stream.awaitTermination();
recording.stop();
// Verify recording
List<RecordedEvent> events = Events.fromRecording(recording);
System.out.println("Events: " + events.size());
Events.hasEvents(events);
}