src/hotspot/share/runtime/timer.cpp

rev 47415 : Add Thread Local handshakes and thread local polling

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -35,10 +35,15 @@
 
 double TimeHelper::counter_to_millis(jlong counter) {
   return counter_to_seconds(counter) * 1000.0;
 }
 
+jlong TimeHelper::millis_to_counter(jlong millis) {
+  jlong freq = os::elapsed_frequency() / MILLIUNITS;
+  return millis * freq;
+}
+
 elapsedTimer::elapsedTimer(jlong time, jlong timeUnitsPerSecond) {
   _active = false;
   jlong osTimeUnitsPerSecond = os::elapsed_frequency();
   assert(osTimeUnitsPerSecond % 1000 == 0, "must be");
   assert(timeUnitsPerSecond % 1000 == 0, "must be");