hotspot/src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp
author tonyp
Wed, 18 Apr 2012 07:21:15 -0400
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permissions -rw-r--r--
7157073: G1: type change size_t -> uint for region counts / indexes Summary: Change the type of fields / variables / etc. that represent region counts and indeces from size_t to uint. Reviewed-by: iveresov, brutisso, jmasa, jwilhelm
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/*
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 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP
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#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP
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#include "gc_implementation/g1/heapRegion.hpp"
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#include "gc_implementation/g1/heapRegionSeq.hpp"
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inline uintx HeapRegionSeq::addr_to_index_biased(HeapWord* addr) const {
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  assert(_heap_bottom <= addr && addr < _heap_end,
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         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
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                 addr, _heap_bottom, _heap_end));
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  uintx index = (uintx) addr >> _region_shift;
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  return index;
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}
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inline HeapRegion* HeapRegionSeq::addr_to_region_unsafe(HeapWord* addr) const {
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  assert(_heap_bottom <= addr && addr < _heap_end,
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         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
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                 addr, _heap_bottom, _heap_end));
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  uintx index_biased = addr_to_index_biased(addr);
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  HeapRegion* hr = _regions_biased[index_biased];
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  assert(hr != NULL, "invariant");
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  return hr;
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}
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inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {
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  if (addr != NULL && addr < _heap_end) {
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    assert(addr >= _heap_bottom,
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          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, _heap_bottom));
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    return addr_to_region_unsafe(addr);
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  }
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  return NULL;
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}
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inline HeapRegion* HeapRegionSeq::at(uint index) const {
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  assert(index < length(), "pre-condition");
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  HeapRegion* hr = _regions[index];
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  assert(hr != NULL, "sanity");
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  assert(hr->hrs_index() == index, "sanity");
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  return hr;
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}
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#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP