src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp

rev 7318 : 8064721: The card tables only ever need two covering regions

*** 30,42 ****
  #include "runtime/atomic.inline.hpp"
  #include "runtime/mutexLocker.hpp"
  #include "runtime/orderAccess.inline.hpp"
  #include "runtime/thread.inline.hpp"
  
! G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap,
!                                                  int max_covered_regions) :
!     CardTableModRefBSForCTRS(whole_heap, max_covered_regions)
  {
    _kind = G1SATBCT;
  }
  
  void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
--- 30,41 ----
  #include "runtime/atomic.inline.hpp"
  #include "runtime/mutexLocker.hpp"
  #include "runtime/orderAccess.inline.hpp"
  #include "runtime/thread.inline.hpp"
  
! G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap) :
!     CardTableModRefBSForCTRS(whole_heap)
  {
    _kind = G1SATBCT;
  }
  
  void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
*** 130,142 ****
    MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_idx), num_regions * HeapRegion::GrainWords);
    _card_table->clear(mr);
  }
  
  G1SATBCardTableLoggingModRefBS::
! G1SATBCardTableLoggingModRefBS(MemRegion whole_heap,
!                                int max_covered_regions) :
!   G1SATBCardTableModRefBS(whole_heap, max_covered_regions),
    _dcqs(JavaThread::dirty_card_queue_set()),
    _listener()
  {
    _kind = G1SATBCTLogging;
    _listener.set_card_table(this);
--- 129,140 ----
    MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_idx), num_regions * HeapRegion::GrainWords);
    _card_table->clear(mr);
  }
  
  G1SATBCardTableLoggingModRefBS::
! G1SATBCardTableLoggingModRefBS(MemRegion whole_heap) :
!   G1SATBCardTableModRefBS(whole_heap),
    _dcqs(JavaThread::dirty_card_queue_set()),
    _listener()
  {
    _kind = G1SATBCTLogging;
    _listener.set_card_table(this);