8165675: Trace event for thread park has incorrect unit for timeout

Reviewed-by: mgronlun

src/share/vm/jfr/metadata/metadata.xml

@@ -40,7 +40,8 @@
 
   <Event name="ThreadPark" category="Java Application" label="Java Thread Park" thread="true" stackTrace="true">
     <Field type="Class" name="parkedClass" label="Class Parked On" />
-    <Field type="long" contentType="millis" name="timeout" label="Park Timeout" />
+    <Field type="long" contentType="nanos" name="timeout" label="Park Timeout" />
+    <Field type="long" contentType="epochmillis" name="until" label="Park Until" />
     <Field type="ulong" contentType="address" name="address" label="Address of Object Parked" relation="JavaMonitorAddress" />
   </Event>
 
@@ -1134,5 +1135,6 @@
   <XmlContentType name="address" annotationType="jdk.jfr.MemoryAddress" />
   <XmlContentType name="percentage" annotationType="jdk.jfr.Percentage" />
   <XmlContentType name="millis" annotationType="jdk.jfr.Timespan" annotationValue="MILLISECONDS" />
-
+  <XmlContentType name="nanos" annotationType="jdk.jfr.Timespan" annotationValue="NANOSECONDS" />
+  
 </Metadata>

src/share/vm/prims/unsafe.cpp

@@ -1236,11 +1236,12 @@ UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jo
 #endif
 UNSAFE_END
 
-static void post_thread_park_event(EventThreadPark* event, const oop obj, jlong timeout) {
+static void post_thread_park_event(EventThreadPark* event, const oop obj, jlong timeout_nanos, jlong until_epoch_millis) {
   assert(event != NULL, "invariant");
   assert(event->should_commit(), "invariant");
   event->set_parkedClass((obj != NULL) ? obj->klass() : NULL);
-  event->set_timeout(timeout);
+  event->set_timeout(timeout_nanos);
+  event->set_until(until_epoch_millis);
   event->set_address((obj != NULL) ? (u8)cast_from_oop<uintptr_t>(obj) : 0);
   event->commit();
 }
@@ -1263,7 +1264,16 @@ UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute,
                           (uintptr_t) thread->parker());
 #endif /* USDT2 */
   if (event.should_commit()) {
-    post_thread_park_event(&event, thread->current_park_blocker(), time);
+    const oop obj = thread->current_park_blocker();
+    if (time == 0) {
+      post_thread_park_event(&event, obj, min_jlong, min_jlong);
+    } else {
+      if (isAbsolute != 0) {
+        post_thread_park_event(&event, obj, min_jlong, time);
+      } else {
+        post_thread_park_event(&event, obj, time, min_jlong);
+      }
+    }
   }
 UNSAFE_END