8226511: Implement JFR Event Streaming
Reviewed-by: egahlin, mseledtsov, mgronlun
Contributed-by: erik.gahlin@oracle.com, mikhailo.seledtsov@oracle.com, markus.gronlund@oracle.com
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package jdk.jfr.event.runtime;
import java.util.List;
import java.util.stream.Collectors;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedClass;
import jdk.jfr.consumer.RecordedClassLoader;
import jdk.jfr.consumer.RecordedEvent;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.EventNames;
import jdk.test.lib.jfr.Events;
/**
* @test
* @key jfr
* @requires vm.hasJFR
* @library /test/lib /test/jdk
* @build jdk.jfr.event.runtime.TestClasses
* @run main/othervm jdk.jfr.event.runtime.TestTableStatisticsEvent
* @bug 8185525
*/
public final class TestTableStatisticsEvent {
public static void main(String[] args) throws Throwable {
try (Recording recording = new Recording()) {
recording.enable(EventNames.SymbolTableStatistics);
recording.enable(EventNames.StringTableStatistics);
recording.enable(EventNames.PlaceholderTableStatistics);
recording.enable(EventNames.LoaderConstraintsTableStatistics);
recording.enable(EventNames.ProtectionDomainCacheTableStatistics);
recording.start();
recording.stop();
List<RecordedEvent> events = Events.fromRecording(recording);
verifyTable(events, EventNames.SymbolTableStatistics);
verifyTable(events, EventNames.StringTableStatistics);
verifyTable(events, EventNames.PlaceholderTableStatistics);
verifyTable(events, EventNames.LoaderConstraintsTableStatistics);
verifyTable(events, EventNames.ProtectionDomainCacheTableStatistics);
}
}
private static void verifyTable(List<RecordedEvent> allEvents, String eventName) throws Exception {
List<RecordedEvent> eventsForTable = allEvents.stream().filter(e -> e.getEventType().getName().equals(eventName)).collect(Collectors.toList());
if (eventsForTable.isEmpty()) {
throw new Exception("No events for " + eventName);
}
for (RecordedEvent event : eventsForTable) {
Events.assertField(event, "bucketCount").atLeast(0L);
long entryCount = Events.assertField(event, "entryCount").atLeast(0L).getValue();
Events.assertField(event, "totalFootprint").atLeast(0L);
float averageBucketCount = Events.assertField(event, "bucketCountAverage").atLeast(0.0f).getValue();
Events.assertField(event, "bucketCountMaximum").atLeast((long)averageBucketCount);
Events.assertField(event, "bucketCountVariance").atLeast(0.0f);
Events.assertField(event, "bucketCountStandardDeviation").atLeast(0.0f);
float insertionRate = Events.assertField(event, "insertionRate").atLeast(0.0f).getValue();
float removalRate = Events.assertField(event, "removalRate").atLeast(0.0f).getValue();
if ((insertionRate > 0.0f) && (insertionRate > removalRate)) {
Asserts.assertGreaterThan(entryCount, 0L, "Entries marked as added, but no entries found for " + eventName);
}
}
}
}