451   return os::javaTimeNanos() / 1000000;

   451   return os::javaTimeNanos() / 1000000;

   452 }

   452 }

   453 

   453 

   454 void JfrThreadSampler::run() {

   454 void JfrThreadSampler::run() {

   455   assert(_sampler_thread == NULL, "invariant");

   455   assert(_sampler_thread == NULL, "invariant");

   456   _sampler_thread = this;

   459   _sampler_thread = this;

   457 

   460 

   458   jlong last_java_ms = get_monotonic_ms();

   461   jlong last_java_ms = get_monotonic_ms();

   459   jlong last_native_ms = last_java_ms;

   462   jlong last_native_ms = last_java_ms;

   460   while (true) {

   463   while (true) {