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

rev 48162 : 8191789: migrate more Thread-SMR stuff from thread.[ch]pp -> threadSMR.[ch]pp
Reviewed-by: stefank
rev 48163 : CR round 0: dcubed - move more code into sort order, add update_smr_tlh_stats(); stefank - refactor Threads::add() and Threads::remove() to allow more ThreadsSMRSupport functions to be private, move is_a_protected_JavaThread_with_lock() to threadSMR.inline.hpp

*** 50,62 ****
--- 50,103 ----
      JavaThread *const current = *current_p;
      threads_do_dispatch(cl, current);
    }
  }
  
+ // These three inlines are private to ThreadsSMRSupport, but
+ // they are called by public inline update_smr_tlh_stats() below:
+ 
+ inline void ThreadsSMRSupport::add_smr_tlh_times(uint add_value) {
+   Atomic::add(add_value, &_smr_tlh_times);
+ }
+ 
+ inline void ThreadsSMRSupport::inc_smr_tlh_cnt() {
+   Atomic::inc(&_smr_tlh_cnt);
+ }
+ 
+ inline void ThreadsSMRSupport::update_smr_tlh_time_max(uint new_value) {
+   while (true) {
+     uint cur_value = _smr_tlh_time_max;
+     if (new_value <= cur_value) {
+       // No need to update max value so we're done.
+       break;
+     }
+     if (Atomic::cmpxchg(new_value, &_smr_tlh_time_max, cur_value) == cur_value) {
+       // Updated max value so we're done. Otherwise try it all again.
+       break;
+     }
+   }
+ }
+ 
+ 
  inline ThreadsList* ThreadsListSetter::list() {
    ThreadsList *ret = _target->get_threads_hazard_ptr();
    assert(ret != NULL, "hazard ptr should be set");
    assert(!Thread::is_hazard_ptr_tagged(ret), "hazard ptr should be validated");
    return ret;
  }
  
+ inline ThreadsList* ThreadsSMRSupport::get_smr_java_thread_list() {
+   return (ThreadsList*)OrderAccess::load_acquire(&_smr_java_thread_list);
+ }
+ 
+ inline bool ThreadsSMRSupport::is_a_protected_JavaThread_with_lock(JavaThread *thread) {
+   MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock);
+   return is_a_protected_JavaThread(thread);
+ }
+ 
+ inline void ThreadsSMRSupport::update_smr_tlh_stats(uint millis) {
+   ThreadsSMRSupport::inc_smr_tlh_cnt();
+   ThreadsSMRSupport::add_smr_tlh_times(millis);
+   ThreadsSMRSupport::update_smr_tlh_time_max(millis);
+ }
+ 
  #endif // SHARE_VM_RUNTIME_THREADSMR_INLINE_HPP