src/hotspot/share/gc/shared/plab.cpp

rev 52072 : 8211955: GC abstraction for LAB reserve

*** 41,52 ****
  
  PLAB::PLAB(size_t desired_plab_sz_) :
    _word_sz(desired_plab_sz_), _bottom(NULL), _top(NULL),
    _end(NULL), _hard_end(NULL), _allocated(0), _wasted(0), _undo_wasted(0)
  {
!   // ArrayOopDesc::header_size depends on command line initialization.
!   AlignmentReserve = oopDesc::header_size() > MinObjAlignment ? align_object_size(arrayOopDesc::header_size(T_INT)) : 0;
    assert(min_size() > AlignmentReserve,
           "Minimum PLAB size " SIZE_FORMAT " must be larger than alignment reserve " SIZE_FORMAT " "
           "to be able to contain objects", min_size(), AlignmentReserve);
  }
  
--- 41,51 ----
  
  PLAB::PLAB(size_t desired_plab_sz_) :
    _word_sz(desired_plab_sz_), _bottom(NULL), _top(NULL),
    _end(NULL), _hard_end(NULL), _allocated(0), _wasted(0), _undo_wasted(0)
  {
!   AlignmentReserve = Universe::heap()->tlab_alloc_reserve();
    assert(min_size() > AlignmentReserve,
           "Minimum PLAB size " SIZE_FORMAT " must be larger than alignment reserve " SIZE_FORMAT " "
           "to be able to contain objects", min_size(), AlignmentReserve);
  }