/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP

#define SHARE_VM_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP

#include "gc/g1/g1Allocator.hpp"

#include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"

#include "gc/g1/g1FullGCMarker.inline.hpp"

#include "gc/g1/g1FullGCOopClosures.hpp"

#include "gc/g1/heapRegionRemSet.hpp"

#include "memory/iterator.inline.hpp"

template <typename T>

inline void G1MarkAndPushClosure::do_oop_nv(T* p) {

  _marker->mark_and_push(p);

}

inline bool G1MarkAndPushClosure::do_metadata_nv() {

  return true;

}

inline void G1MarkAndPushClosure::do_klass_nv(Klass* k) {

  _marker->follow_klass(k);

}

inline void G1MarkAndPushClosure::do_cld_nv(ClassLoaderData* cld) {

  _marker->follow_cld(cld);

}

template <class T> inline oop G1AdjustClosure::adjust_pointer(T* p) {

  T heap_oop = oopDesc::load_heap_oop(p);

  if (oopDesc::is_null(heap_oop)) {

    // NULL reference, return NULL.

    return NULL;

  }

  oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);

  assert(Universe::heap()->is_in(obj), "should be in heap");

  if (G1ArchiveAllocator::is_archive_object(obj)) {

    // Never forwarding archive objects, return current reference.

    return obj;

  }

  oop forwardee = obj->forwardee();

  if (forwardee == NULL) {

    // Not forwarded, return current reference.

    assert(obj->mark() == markOopDesc::prototype_for_object(obj) || // Correct mark

           obj->mark()->must_be_preserved(obj) || // Will be restored by PreservedMarksSet

           (UseBiasedLocking && obj->has_bias_pattern()), // Will be restored by BiasedLocking

           "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT,

           p2i(obj), p2i(obj->mark()), p2i(markOopDesc::prototype_for_object(obj)));

    return obj;

  }

  // Forwarded, update and return new reference.

  assert(Universe::heap()->is_in_reserved(forwardee), "should be in object space");

  oopDesc::encode_store_heap_oop_not_null(p, forwardee);

  return forwardee;

}

template <class T>

inline void G1AdjustAndRebuildClosure::add_reference(T* from_field, oop reference, uint worker_id) {

  if (HeapRegion::is_in_same_region(from_field, reference)) {

    return;

  }

  _g1h->heap_region_containing(reference)->rem_set()->add_reference(from_field, worker_id);

}

inline size_t G1AdjustAndRebuildClosure::calculate_compaction_delta(oop current, oop forwardee) {

  return pointer_delta((HeapWord*)forwardee, (HeapWord*)current);

}

template <class T>

inline T* G1AdjustAndRebuildClosure::add_compaction_delta(T* p) {

  return (T*)((HeapWord*)p + _compaction_delta);

}

template<typename T>

void G1AdjustAndRebuildClosure::do_oop_nv(T* p) {

  oop new_reference = G1AdjustClosure::adjust_pointer(p);

  if (new_reference == NULL) {

    return;

  }

  // Update p using the calculated compaction delta to

  // get the new field address.

  T* new_field = add_compaction_delta(p);

  // Update the remembered set.

  add_reference(new_field, new_reference, _worker_id);

}

inline int G1AdjustObjectClosure::adjust_object(oop obj) {

  _closure->update_compaction_delta(obj);

  return obj->oop_iterate_size(_closure);

}

inline bool G1IsAliveClosure::do_object_b(oop p) {

  return _bitmap->is_marked(p) || G1ArchiveAllocator::is_closed_archive_object(p);

}

template<typename T>

inline void G1FullKeepAliveClosure::do_oop_work(T* p) {

  _marker->mark_and_push(p);

}

#endif