1 /*
   2  * Copyright (c) 2001, 2015, 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_G1_HEAPREGIONMANAGER_INLINE_HPP
  26 #define SHARE_VM_GC_G1_HEAPREGIONMANAGER_INLINE_HPP
  27 
  28 #include "gc/g1/heapRegion.hpp"
  29 #include "gc/g1/heapRegionManager.hpp"
  30 #include "gc/g1/heapRegionSet.inline.hpp"
  31 
  32 inline HeapRegion* HeapRegionManager::addr_to_region(HeapWord* addr) const {
  33   assert(addr < heap_end(),
  34         "addr: " PTR_FORMAT " end: " PTR_FORMAT, p2i(addr), p2i(heap_end()));
  35   assert(addr >= heap_bottom(),
  36         "addr: " PTR_FORMAT " bottom: " PTR_FORMAT, p2i(addr), p2i(heap_bottom()));
  37 
  38   HeapRegion* hr = _regions.get_by_address(addr);
  39   return hr;
  40 }
  41 
  42 inline HeapRegion* HeapRegionManager::at(uint index) const {
  43   assert(is_available(index), "pre-condition");
  44   HeapRegion* hr = _regions.get_by_index(index);
  45   assert(hr != NULL, "sanity");
  46   assert(hr->hrm_index() == index, "sanity");
  47   return hr;
  48 }
  49 
  50 inline HeapRegion* HeapRegionManager::next_region_by_index(HeapRegion* hr) const {
  51   uint index = hr->hrm_index();
  52   assert(is_available(index), "pre-condition");
  53   index++;
  54   if (index < max_length() && is_available(index)) {
  55     return at(index);
  56   } else {
  57     return NULL;
  58   }
  59 }
  60 
  61 
  62 inline void HeapRegionManager::insert_into_free_list(HeapRegion* hr) {
  63   _free_list.add_ordered(hr);
  64 }
  65 
  66 inline void HeapRegionManager::allocate_free_regions_starting_at(uint first, uint num_regions) {
  67   _free_list.remove_starting_at(at(first), num_regions);
  68 }
  69 
  70 #endif // SHARE_VM_GC_G1_HEAPREGIONMANAGER_INLINE_HPP