src/hotspot/share/services/memoryManager.cpp

*** 208,218 ****
    // hold the publicly available "last (completed) gc" information.
  }
  
  void GCMemoryManager::gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
                                 bool recordAccumulatedGCTime) {
!   assert(_last_gc_stat != NULL && _current_gc_stat != NULL, "Just checking");
    if (recordAccumulatedGCTime) {
      _accumulated_timer.start();
    }
    // _num_collections now increases in gc_end, to count completed collections
    if (recordGCBeginTime) {
--- 208,221 ----
    // hold the publicly available "last (completed) gc" information.
  }
  
  void GCMemoryManager::gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
                                 bool recordAccumulatedGCTime) {
!   // Inactive memory managers (young, mixed, and concurrent in G1 legacy mode,
!   // and incremental in G1 default mode) will not be initialized.
!   if (_last_gc_stat == NULL && _current_gc_stat == NULL) return;
! 
    if (recordAccumulatedGCTime) {
      _accumulated_timer.start();
    }
    // _num_collections now increases in gc_end, to count completed collections
    if (recordGCBeginTime) {
*** 241,250 ****
--- 244,255 ----
  void GCMemoryManager::gc_end(bool recordPostGCUsage,
                               bool recordAccumulatedGCTime,
                               bool recordGCEndTime, bool countCollection,
                               GCCause::Cause cause,
                               bool allMemoryPoolsAffected) {
+   if (_last_gc_stat == NULL && _current_gc_stat == NULL) return;
+ 
    if (recordAccumulatedGCTime) {
      _accumulated_timer.stop();
    }
    if (recordGCEndTime) {
      _current_gc_stat->set_end_time(Management::timestamp());