src/hotspot/share/gc/shared/cardTableModRefBS.inline.hpp
author eosterlund
Mon, 20 Nov 2017 13:07:44 +0100
changeset 47998 fb0275c320a0
parent 47609 a1f68e415b48
child 49164 7e958a8ebcd3
permissions -rw-r--r--
8189871: Refactor GC barriers to use declarative semantics Reviewed-by: pliden, rkennke, coleenp, dholmes, kbarrett, stefank

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#ifndef SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP
#define SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP

#include "gc/shared/cardTableModRefBS.hpp"
#include "runtime/orderAccess.inline.hpp"

template <DecoratorSet decorators, typename T>
inline void CardTableModRefBS::write_ref_field_post(T* field, oop newVal) {
  volatile jbyte* byte = byte_for(field);
  if (UseConcMarkSweepGC) {
    // Perform a releasing store if using CMS so that it may
    // scan and clear the cards concurrently during pre-cleaning.
    OrderAccess::release_store(byte, jbyte(dirty_card));
  } else {
    *byte = dirty_card;
  }
}

#endif // SHARE_VM_GC_SHARED_CARDTABLEMODREFBS_INLINE_HPP