/*

 * 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.

 *

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#include "gc/g1/g1ConcurrentMarkBitMap.hpp"

#include "gc/shared/markBitMap.inline.hpp"

#include "memory/memRegion.hpp"

#include "utilities/align.hpp"

#include "utilities/bitMap.inline.hpp"

inline bool G1CMBitMap::iterate(G1CMBitMapClosure* cl, MemRegion mr) {

  assert(!mr.is_empty(), "Does not support empty memregion to iterate over");

  assert(_covered.contains(mr),

         "Given MemRegion from " PTR_FORMAT " to " PTR_FORMAT " not contained in heap area",

         p2i(mr.start()), p2i(mr.end()));

  BitMap::idx_t const end_offset = addr_to_offset(mr.end());

  BitMap::idx_t offset = _bm.get_next_one_offset(addr_to_offset(mr.start()), end_offset);

  while (offset < end_offset) {

    HeapWord* const addr = offset_to_addr(offset);

    if (!cl->do_addr(addr)) {

      return false;

    }

    size_t const obj_size = (size_t)((oop)addr)->size();

    offset = _bm.get_next_one_offset(offset + (obj_size >> _shifter), end_offset);

  }

  return true;

}