src/share/vm/runtime/thread.hpp

rev 8911 : [jfr] enable thread sampling

@@ -194,11 +194,13 @@
     _external_suspend       = 0x20000000U, // thread is asked to self suspend
     _ext_suspended          = 0x40000000U, // thread has self-suspended
     _deopt_suspend          = 0x10000000U, // thread needs to self suspend for deopt
 
     _has_async_exception    = 0x00000001U, // there is a pending async exception
-    _critical_native_unlock = 0x00000002U  // Must call back to unlock JNI critical lock
+    _critical_native_unlock = 0x00000002U, // Must call back to unlock JNI critical lock
+
+    JFR_ONLY(_trace_flag    = 0x00000004U)  // call jfr tracing
   };
 
   // various suspension related flags - atomically updated
   // overloaded for async exception checking in check_special_condition_for_native_trans.
   volatile uint32_t _suspend_flags;

@@ -441,10 +443,11 @@
   void set_allocated_bytes(jlong value) { _allocated_bytes = value; }
   void incr_allocated_bytes(jlong size) { _allocated_bytes += size; }
   inline jlong cooked_allocated_bytes();
 
   JFR_ONLY(DEFINE_THREAD_LOCAL_ACCESSOR_JFR;)
+  JFR_ONLY(DEFINE_TRACE_SUSPEND_FLAG_METHODS)
 
   const ThreadExt& ext() const          { return _ext; }
   ThreadExt& ext()                      { return _ext; }
 
   // VM operation support