/*

 * Copyright (c) 2001, 2012, 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

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 */

#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

#include "gc_implementation/g1/heapRegion.hpp"

#include "gc_implementation/g1/heapRegionSeq.hpp"

inline uintx HeapRegionSeq::addr_to_index_biased(HeapWord* addr) const {

  assert(_heap_bottom <= addr && addr < _heap_end,

         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,

                 addr, _heap_bottom, _heap_end));

  uintx index = (uintx) addr >> _region_shift;

  return index;

}

inline HeapRegion* HeapRegionSeq::addr_to_region_unsafe(HeapWord* addr) const {

  assert(_heap_bottom <= addr && addr < _heap_end,

         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,

                 addr, _heap_bottom, _heap_end));

  uintx index_biased = addr_to_index_biased(addr);

  HeapRegion* hr = _regions_biased[index_biased];

  assert(hr != NULL, "invariant");

  return hr;

}

inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {

  if (addr != NULL && addr < _heap_end) {

    assert(addr >= _heap_bottom,

          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, _heap_bottom));

    return addr_to_region_unsafe(addr);

  }

  return NULL;

}

inline HeapRegion* HeapRegionSeq::at(uint index) const {

  assert(index < length(), "pre-condition");

  HeapRegion* hr = _regions[index];

  assert(hr != NULL, "sanity");

  assert(hr->hrs_index() == index, "sanity");

  return hr;

}

#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP