src/hotspot/share/runtime/mutexLocker.cpp

rev 52711 : 8185005: Improve performance of ThreadMXBean.getThreadInfo(long ids[], int maxDepth)
Reviewed-by: sspitsyn, dholmes, dcubed, rehn

@@ -145,10 +145,11 @@
 Mutex*   UnsafeJlong_lock             = NULL;
 #endif
 Monitor* CodeHeapStateAnalytics_lock  = NULL;
 
 Mutex*   MetaspaceExpand_lock         = NULL;
+Mutex*   ThreadIdTableCreate_lock     = NULL;
 
 #define MAX_NUM_MUTEX 128
 static Monitor * _mutex_array[MAX_NUM_MUTEX];
 static int _num_mutex;
 

@@ -317,10 +318,11 @@
 #ifndef SUPPORTS_NATIVE_CX8
   def(UnsafeJlong_lock             , PaddedMutex  , special,     false, Monitor::_safepoint_check_never);
 #endif
 
   def(CodeHeapStateAnalytics_lock  , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_never);
+  def(ThreadIdTableCreate_lock     , PaddedMutex  , leaf,        false, Monitor::_safepoint_check_always);
 }
 
 GCMutexLocker::GCMutexLocker(Monitor * mutex) {
   if (SafepointSynchronize::is_at_safepoint()) {
     _locked = false;