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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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#ifndef SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP

#define SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP

#include "gc/shared/modRefBarrierSet.hpp"

#include "oops/klass.inline.hpp"

#include "oops/objArrayOop.hpp"

#include "oops/oop.hpp"

template <DecoratorSet decorators, typename BarrierSetT>

template <typename T>

inline void ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>::

oop_store_in_heap(T* addr, oop value) {

  BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set());

  bs->template write_ref_field_pre<decorators>(addr);

  Raw::oop_store(addr, value);

  bs->template write_ref_field_post<decorators>(addr, value);

}

template <DecoratorSet decorators, typename BarrierSetT>

template <typename T>

inline oop ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>::

oop_atomic_cmpxchg_in_heap(oop new_value, T* addr, oop compare_value) {

  BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set());

  bs->template write_ref_field_pre<decorators>(addr);

  oop result = Raw::oop_atomic_cmpxchg(new_value, addr, compare_value);

  if (result == compare_value) {

    bs->template write_ref_field_post<decorators>(addr, new_value);

  }

  return result;

}

template <DecoratorSet decorators, typename BarrierSetT>

template <typename T>

inline oop ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>::

oop_atomic_xchg_in_heap(oop new_value, T* addr) {

  BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set());

  bs->template write_ref_field_pre<decorators>(addr);

  oop result = Raw::oop_atomic_xchg(new_value, addr);

  bs->template write_ref_field_post<decorators>(addr, new_value);

  return result;

}

template <DecoratorSet decorators, typename BarrierSetT>

template <typename T>

inline bool ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>::

oop_arraycopy_in_heap(arrayOop src_obj, arrayOop dst_obj, T* src, T* dst, size_t length) {

  BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set());

  if (!HasDecorator<decorators, ARRAYCOPY_CHECKCAST>::value) {

    // Optimized covariant case

    bs->write_ref_array_pre(dst, (int)length,

                            HasDecorator<decorators, ARRAYCOPY_DEST_NOT_INITIALIZED>::value);

    Raw::oop_arraycopy(src_obj, dst_obj, src, dst, length);

    bs->write_ref_array((HeapWord*)dst, length);

  } else {

    Klass* bound = objArrayOop(dst_obj)->element_klass();

    T* from = src;

    T* end = from + length;

    for (T* p = dst; from < end; from++, p++) {

      T element = *from;

      if (bound->is_instanceof_or_null(element)) {

        bs->template write_ref_field_pre<decorators>(p);

        *p = element;

      } else {

        // We must do a barrier to cover the partial copy.

        const size_t pd = pointer_delta(p, dst, (size_t)heapOopSize);

        // pointer delta is scaled to number of elements (length field in

        // objArrayOop) which we assume is 32 bit.

        assert(pd == (size_t)(int)pd, "length field overflow");

        bs->write_ref_array((HeapWord*)dst, pd);

        return false;

      }

    }

    bs->write_ref_array((HeapWord*)dst, length);

  }

  return true;

}

template <DecoratorSet decorators, typename BarrierSetT>

inline void ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT>::

clone_in_heap(oop src, oop dst, size_t size) {

  Raw::clone(src, dst, size);

  BarrierSetT *bs = barrier_set_cast<BarrierSetT>(barrier_set());

  bs->write_region(MemRegion((HeapWord*)(void*)dst, size));

}

#endif // SHARE_VM_GC_SHARED_MODREFBARRIERSET_INLINE_HPP