src/hotspot/share/runtime/safepointMechanism.inline.hpp

rev 47554 : Introduce SafepointMechanism
rev 47556 : Add Thread Local handshakes and thread local polling
rev 47559 : imported patch Assorted-Karen-5

*** 37,51 ****
  bool SafepointMechanism::global_poll() {
    return SafepointSynchronize::do_call_back();
  }
  
  bool SafepointMechanism::local_poll(Thread* thread) {
-   // Mutexes can be taken but none JavaThread. These cannot have handshakes
-   // operation but they must stop for safepoints.
    if (thread->is_Java_thread()) {
      return local_poll_armed((JavaThread*)thread);
    } else {
      return global_poll();
    }
  }
  
  bool SafepointMechanism::poll(Thread* thread) {
--- 37,50 ----
  bool SafepointMechanism::global_poll() {
    return SafepointSynchronize::do_call_back();
  }
  
  bool SafepointMechanism::local_poll(Thread* thread) {
    if (thread->is_Java_thread()) {
      return local_poll_armed((JavaThread*)thread);
    } else {
+     // If the poll is on a non-java thread we can only check the global state.
      return global_poll();
    }
  }
  
  bool SafepointMechanism::poll(Thread* thread) {