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#ifndef SHARE_VM_GC_SHARED_GENOOPCLOSURES_INLINE_HPP

#define SHARE_VM_GC_SHARED_GENOOPCLOSURES_INLINE_HPP

#include "gc/serial/defNewGeneration.hpp"

#include "gc/shared/cardTableRS.hpp"

#include "gc/shared/genCollectedHeap.hpp"

#include "gc/shared/genOopClosures.hpp"

#include "gc/shared/generation.hpp"

#include "gc/shared/space.hpp"

#include "oops/access.inline.hpp"

#include "oops/compressedOops.inline.hpp"

inline OopsInGenClosure::OopsInGenClosure(Generation* gen) :

  ExtendedOopClosure(gen->ref_processor()), _orig_gen(gen), _rs(NULL) {

  set_generation(gen);

}

inline void OopsInGenClosure::set_generation(Generation* gen) {

  _gen = gen;

  _gen_boundary = _gen->reserved().start();

  // Barrier set for the heap, must be set after heap is initialized

  if (_rs == NULL) {

    _rs = GenCollectedHeap::heap()->rem_set();

  }

}

template <class T> inline void OopsInGenClosure::do_barrier(T* p) {

  assert(generation()->is_in_reserved(p), "expected ref in generation");

  T heap_oop = RawAccess<>::oop_load(p);

  assert(!CompressedOops::is_null(heap_oop), "expected non-null oop");

  oop obj = CompressedOops::decode_not_null(heap_oop);

  // If p points to a younger generation, mark the card.

  if ((HeapWord*)obj < _gen_boundary) {

    _rs->inline_write_ref_field_gc(p, obj);

  }

}

template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) {

  assert(generation()->is_in_reserved(p), "expected ref in generation");

  T heap_oop = RawAccess<>::oop_load(p);

  assert(!CompressedOops::is_null(heap_oop), "expected non-null oop");

  oop obj = CompressedOops::decode_not_null(heap_oop);

  // If p points to a younger generation, mark the card.

  if ((HeapWord*)obj < gen_boundary()) {

    rs()->write_ref_field_gc_par(p, obj);

  }

}

inline void OopsInClassLoaderDataOrGenClosure::do_cld_barrier() {

  assert(_scanned_cld != NULL, "Must be");

  if (!_scanned_cld->has_modified_oops()) {

    _scanned_cld->record_modified_oops();

  }

}

// NOTE! Any changes made here should also be made

// in FastScanClosure::do_oop_work()

template <class T> inline void ScanClosure::do_oop_work(T* p) {

  T heap_oop = RawAccess<>::oop_load(p);

  // Should we copy the obj?

  if (!CompressedOops::is_null(heap_oop)) {

    oop obj = CompressedOops::decode_not_null(heap_oop);

    if ((HeapWord*)obj < _boundary) {

      assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?");

      oop new_obj = obj->is_forwarded() ? obj->forwardee()

                                        : _g->copy_to_survivor_space(obj);

      RawAccess<OOP_NOT_NULL>::oop_store(p, new_obj);

    }

    if (is_scanning_a_cld()) {

      do_cld_barrier();

    } else if (_gc_barrier) {

      // Now call parent closure

      do_barrier(p);

    }

  }

}

inline void ScanClosure::do_oop_nv(oop* p)       { ScanClosure::do_oop_work(p); }

inline void ScanClosure::do_oop_nv(narrowOop* p) { ScanClosure::do_oop_work(p); }

// NOTE! Any changes made here should also be made

// in ScanClosure::do_oop_work()

template <class T> inline void FastScanClosure::do_oop_work(T* p) {

  T heap_oop = RawAccess<>::oop_load(p);

  // Should we copy the obj?

  if (!CompressedOops::is_null(heap_oop)) {

    oop obj = CompressedOops::decode_not_null(heap_oop);

    if ((HeapWord*)obj < _boundary) {

      assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?");

      oop new_obj = obj->is_forwarded() ? obj->forwardee()

                                        : _g->copy_to_survivor_space(obj);

      RawAccess<OOP_NOT_NULL>::oop_store(p, new_obj);

      if (is_scanning_a_cld()) {

        do_cld_barrier();

      } else if (_gc_barrier) {

        // Now call parent closure

        do_barrier(p);

      }

    }

  }

}

inline void FastScanClosure::do_oop_nv(oop* p)       { FastScanClosure::do_oop_work(p); }

inline void FastScanClosure::do_oop_nv(narrowOop* p) { FastScanClosure::do_oop_work(p); }

template <class T> void FilteringClosure::do_oop_work(T* p) {

  T heap_oop = RawAccess<>::oop_load(p);

  if (!CompressedOops::is_null(heap_oop)) {

    oop obj = CompressedOops::decode_not_null(heap_oop);

    if ((HeapWord*)obj < _boundary) {

      _cl->do_oop(p);

    }

  }

}

void FilteringClosure::do_oop_nv(oop* p)       { FilteringClosure::do_oop_work(p); }

void FilteringClosure::do_oop_nv(narrowOop* p) { FilteringClosure::do_oop_work(p); }

// Note similarity to ScanClosure; the difference is that

// the barrier set is taken care of outside this closure.

template <class T> inline void ScanWeakRefClosure::do_oop_work(T* p) {

  oop obj = RawAccess<OOP_NOT_NULL>::oop_load(p);

  // weak references are sometimes scanned twice; must check

  // that to-space doesn't already contain this object

  if ((HeapWord*)obj < _boundary && !_g->to()->is_in_reserved(obj)) {

    oop new_obj = obj->is_forwarded() ? obj->forwardee()

                                      : _g->copy_to_survivor_space(obj);

    RawAccess<OOP_NOT_NULL>::oop_store(p, new_obj);

  }

}

inline void ScanWeakRefClosure::do_oop_nv(oop* p)       { ScanWeakRefClosure::do_oop_work(p); }

inline void ScanWeakRefClosure::do_oop_nv(narrowOop* p) { ScanWeakRefClosure::do_oop_work(p); }

#endif // SHARE_VM_GC_SHARED_GENOOPCLOSURES_INLINE_HPP