8308335: JFR: Remove @Experimental from Virtual Threads events

Reviewed-by: alanb, mgronlun

src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadEndEvent.java

@@ -26,7 +26,6 @@
 package jdk.jfr.events;
 
 import jdk.jfr.Category;
-import jdk.jfr.Experimental;
 import jdk.jfr.Label;
 import jdk.jfr.Name;
 import jdk.jfr.internal.MirrorEvent;
@@ -35,7 +34,6 @@ import jdk.jfr.internal.MirrorEvent;
 @Label("Virtual Thread End")
 @Name("jdk.VirtualThreadEnd")
 @MirrorEvent(className = "jdk.internal.event.VirtualThreadEndEvent")
-@Experimental
 public final class VirtualThreadEndEvent extends AbstractJDKEvent {
 
     @Label("Thread Id")

src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadPinnedEvent.java

@@ -26,7 +26,6 @@
 package jdk.jfr.events;
 
 import jdk.jfr.Category;
-import jdk.jfr.Experimental;
 import jdk.jfr.Label;
 import jdk.jfr.Name;
 import jdk.jfr.internal.MirrorEvent;
@@ -35,6 +34,5 @@ import jdk.jfr.internal.MirrorEvent;
 @Label("Virtual Thread Pinned")
 @Name("jdk.VirtualThreadPinned")
 @MirrorEvent(className = "jdk.internal.event.VirtualThreadPinnedEvent")
-@Experimental
 public final class VirtualThreadPinnedEvent extends AbstractJDKEvent {
 }

src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadStartEvent.java

@@ -26,7 +26,6 @@
 package jdk.jfr.events;
 
 import jdk.jfr.Category;
-import jdk.jfr.Experimental;
 import jdk.jfr.Label;
 import jdk.jfr.Name;
 import jdk.jfr.internal.MirrorEvent;
@@ -35,7 +34,6 @@ import jdk.jfr.internal.MirrorEvent;
 @Label("Virtual Thread Start")
 @Name("jdk.VirtualThreadStart")
 @MirrorEvent(className = "jdk.internal.event.VirtualThreadStartEvent")
-@Experimental
 public final class VirtualThreadStartEvent extends AbstractJDKEvent {
 
     @Label("Thread Id")

src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadSubmitFailedEvent.java

@@ -27,7 +27,6 @@ package jdk.jfr.events;
 
 import jdk.jfr.Category;
 import jdk.jfr.Description;
-import jdk.jfr.Experimental;
 import jdk.jfr.Label;
 import jdk.jfr.Name;
 import jdk.jfr.internal.MirrorEvent;
@@ -37,7 +36,6 @@ import jdk.jfr.internal.MirrorEvent;
 @Name("jdk.VirtualThreadSubmitFailed")
 @Description("Submit of task for virtual thread failed")
 @MirrorEvent(className = "jdk.internal.event.VirtualThreadSubmitFailedEvent")
-@Experimental
 public final class VirtualThreadSubmitFailedEvent extends AbstractJDKEvent {
 
     @Label("Thread Id")

test/jdk/jdk/jfr/event/metadata/TestLookForUntestedEvents.java

@@ -77,6 +77,9 @@ public class TestLookForUntestedEvents {
             "ContainerConfiguration", "ContainerCPUUsage", "ContainerCPUThrottling",
             "ContainerMemoryUsage", "ContainerIOUsage")
     );
+    // These events are tested in test/jdk/java/lang/Thread/virtual/JfrEvents.java
+    private static final Set<String> coveredVirtualThreadEvents = Set.of(
+        "VirtualThreadPinned", "VirtualThreadSubmitFailed");
 
     // This is a "known failure list" for this test.
     // NOTE: if the event is not covered, a bug should be open, and bug number
@@ -85,16 +88,8 @@ public class TestLookForUntestedEvents {
     );
 
     // Experimental events
-    private static final Set<String> experimentalEvents = new HashSet<>(
+    private static final Set<String> experimentalEvents = Set.of(
-        Arrays.asList(
+        "Flush", "SyncOnValueBasedClass");
-            "Flush",
-            "SyncOnValueBasedClass",
-            "VirtualThreadStart",
-            "VirtualThreadEnd",
-            "VirtualThreadPinned",
-            "VirtualThreadSubmitFailed")
-    );
-
 
     public static void main(String[] args) throws Exception {
         for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) {
@@ -127,6 +122,7 @@ public class TestLookForUntestedEvents {
         // Account for hard-to-test, experimental and GC tested events
         eventsNotCoveredByTest.removeAll(hardToTestEvents);
         eventsNotCoveredByTest.removeAll(coveredGcEvents);
+        eventsNotCoveredByTest.removeAll(coveredVirtualThreadEvents);
         eventsNotCoveredByTest.removeAll(coveredContainerEvents);
         eventsNotCoveredByTest.removeAll(knownNotCoveredEvents);