1 /*
   2  * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP
  27 
  28 #include "gc_implementation/g1/heapRegion.hpp"
  29 #include "gc_implementation/g1/heapRegionSeq.hpp"
  30 
  31 inline uintx HeapRegionSeq::addr_to_index_biased(HeapWord* addr) const {
  32   assert(_heap_bottom <= addr && addr < _heap_end,
  33          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
  34                  addr, _heap_bottom, _heap_end));
  35   uintx index = (uintx) addr >> _region_shift;
  36   return index;
  37 }
  38 
  39 inline HeapRegion* HeapRegionSeq::addr_to_region_unsafe(HeapWord* addr) const {
  40   assert(_heap_bottom <= addr && addr < _heap_end,
  41          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
  42                  addr, _heap_bottom, _heap_end));
  43   uintx index_biased = addr_to_index_biased(addr);
  44   HeapRegion* hr = _regions_biased[index_biased];
  45   assert(hr != NULL, "invariant");
  46   return hr;
  47 }
  48 
  49 inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {
  50   if (addr != NULL && addr < _heap_end) {
  51     assert(addr >= _heap_bottom,
  52           err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, _heap_bottom));
  53     return addr_to_region_unsafe(addr);
  54   }
  55   return NULL;
  56 }
  57 
  58 inline HeapRegion* HeapRegionSeq::at(uint index) const {
  59   assert(index < length(), "pre-condition");
  60   HeapRegion* hr = _regions[index];
  61   assert(hr != NULL, "sanity");
  62   assert(hr->hrs_index() == index, "sanity");
  63   return hr;
  64 }
  65 
  66 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP