22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.gc.collection;
  27 
  28 import java.time.Duration;
  29 import java.util.List;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedEvent;
  33 import jdk.test.lib.jfr.Events;
  34 import jdk.test.lib.jfr.GCHelper;
  35 
  36 /**
  37  * @test
  38  * @key jfr
  39  * @requires vm.hasJFR
  40   * @requires vm.gc == "Parallel" | vm.gc == null
  41  * @library /test/lib /test/jdk
  42  * @run main/othervm -XX:+UseParallelGC -XX:+UseParallelOldGC jdk.jfr.event.gc.collection.TestGCWithFasttime
  43  */
  44 public class TestGCWithFasttime {
  45     private static final String EVENT_NAME = GCHelper.event_garbage_collection;
  46 
  47     // TODO: Check if all GC tests can be run with fast time. If so, this test is probably not needed.
  48     public static void main(String[] args) throws Exception {
  49         Recording recording = new Recording();
  50         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  51         recording.start();
  52         System.gc();
  53         System.gc();
  54         recording.stop();
  55 
  56         List<RecordedEvent> events = Events.fromRecording(recording);
  57         Events.hasEvents(events);
  58         for (RecordedEvent event : events) {
  59             if (!EVENT_NAME.equals(event.getEventType().getName())) {
  60                 continue;
  61             }
  62             Events.assertField(event, "name").notEmpty();

  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.gc.collection;
  27 
  28 import java.time.Duration;
  29 import java.util.List;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedEvent;
  33 import jdk.test.lib.jfr.Events;
  34 import jdk.test.lib.jfr.GCHelper;
  35 
  36 /**
  37  * @test
  38  * @key jfr
  39  * @requires vm.hasJFR
  40   * @requires vm.gc == "Parallel" | vm.gc == null
  41  * @library /test/lib /test/jdk
  42  * @run main/othervm -XX:+UseParallelGC jdk.jfr.event.gc.collection.TestGCWithFasttime
  43  */
  44 public class TestGCWithFasttime {
  45     private static final String EVENT_NAME = GCHelper.event_garbage_collection;
  46 
  47     // TODO: Check if all GC tests can be run with fast time. If so, this test is probably not needed.
  48     public static void main(String[] args) throws Exception {
  49         Recording recording = new Recording();
  50         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  51         recording.start();
  52         System.gc();
  53         System.gc();
  54         recording.stop();
  55 
  56         List<RecordedEvent> events = Events.fromRecording(recording);
  57         Events.hasEvents(events);
  58         for (RecordedEvent event : events) {
  59             if (!EVENT_NAME.equals(event.getEventType().getName())) {
  60                 continue;
  61             }
  62             Events.assertField(event, "name").notEmpty();