Avoid initializing SMAP events on JDKs with no JFR (#9231)

Author: jbachorik

dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/Agent.java

@@ -881,12 +881,7 @@ private static synchronized void registerSmapEntryEvent() {
               "com.datadog.profiling.controller.openjdk.events.SmapEntryFactory");
       final Method registerMethod = smapFactoryClass.getMethod("registerEvents");
       registerMethod.invoke(null);
-    } catch (final NoSuchMethodException
-        | NoClassDefFoundError
-        | ClassNotFoundException
-        | UnsupportedClassVersionError
-        | IllegalAccessException
-        | InvocationTargetException ignored) {
+    } catch (final Exception ignored) {
       log.debug("Smap entry scraping not supported");
     }
   }

dd-java-agent/agent-profiling/profiling-controller-openjdk/src/main/java/com/datadog/profiling/controller/openjdk/events/SmapEntryFactory.java

@@ -2,6 +2,7 @@
 
 import static datadog.trace.api.telemetry.LogCollector.SEND_TELEMETRY;
 
+import datadog.environment.JavaVirtualMachine;
 import datadog.environment.OperatingSystem;
 import datadog.trace.bootstrap.instrumentation.jfr.JfrHelper;
 import java.lang.management.ManagementFactory;
@@ -21,14 +22,27 @@ public class SmapEntryFactory {
 
   private static final AtomicBoolean REGISTERED = new AtomicBoolean();
 
-  private static final EventType SMAP_ENTRY_EVENT_TYPE =
-      EventType.getEventType(SmapEntryEvent.class);
-  private static final EventType AGGREGATED_SMAP_ENTRY_EVENT_TYPE =
-      EventType.getEventType(AggregatedSmapEntryEvent.class);
+  private static final EventType SMAP_ENTRY_EVENT_TYPE;
+  private static final EventType AGGREGATED_SMAP_ENTRY_EVENT_TYPE;
 
   private static final SmapEntryCache SMAP_ENTRY_CACHE = new SmapEntryCache(Duration.ofMillis(500));
 
+  static {
+    if (!JavaVirtualMachine.isJ9() && !JavaVirtualMachine.isOracleJDK8()) {
+      SMAP_ENTRY_EVENT_TYPE = EventType.getEventType(SmapEntryEvent.class);
+      AGGREGATED_SMAP_ENTRY_EVENT_TYPE = EventType.getEventType(AggregatedSmapEntryEvent.class);
+    } else {
+      SMAP_ENTRY_EVENT_TYPE = null;
+      AGGREGATED_SMAP_ENTRY_EVENT_TYPE = null;
+    }
+  }
+
   public static void registerEvents() {
+    if (SMAP_ENTRY_EVENT_TYPE == null || AGGREGATED_SMAP_ENTRY_EVENT_TYPE == null) {
+      // JFR is not available
+      return;
+    }
+
     // Make sure the periodic event is registered only once
     if (REGISTERED.compareAndSet(false, true) && OperatingSystem.isLinux()) {
       try {