src/share/vm/runtime/thread.hpp

rev 9380 : 8237499: JFR: Include stack trace in the ThreadStart event
Reviewed-by: egahlin

@@ -329,10 +329,11 @@
 
   virtual char* name() const { return (char*)"Unknown thread"; }
 
   // Returns the current thread
   static inline Thread* current();
+  static inline Thread* current_or_null();
 
   // Common thread operations
   static void set_priority(Thread* thread, ThreadPriority priority);
   static ThreadPriority get_priority(const Thread* const thread);
   static void start(Thread* thread);

@@ -681,10 +682,17 @@
   Thread* thread = ThreadLocalStorage::thread();
   assert(thread != NULL, "just checking");
   return thread;
 }
 
+inline Thread* Thread::current_or_null() {
+  if (ThreadLocalStorage::is_initialized()) {
+    return ThreadLocalStorage::thread();
+  }
+  return NULL;
+}
+
 // Name support for threads.  non-JavaThread subclasses with multiple
 // uniquely named instances should derive from this.
 class NamedThread: public Thread {
   friend class VMStructs;
   enum {