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src/share/vm/gc_implementation/g1/heapRegionManager.cpp

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rev 7902 : [mq]: 8073052-Rename-and-clean-up-the-allocation-manager-hierarchy-in-g1Allocator
rev 7905 : imported patch 8067336-allow-that-plab-allocations-at-the-end-of-regions-are-flexible


   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 #include "precompiled.hpp"
  26 #include "gc_implementation/g1/heapRegion.hpp"
  27 #include "gc_implementation/g1/heapRegionManager.inline.hpp"
  28 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
  29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  30 #include "gc_implementation/g1/concurrentG1Refine.hpp"
  31 #include "memory/allocation.hpp"
  32 
  33 void HeapRegionManager::initialize(G1RegionToSpaceMapper* heap_storage,
  34                                G1RegionToSpaceMapper* prev_bitmap,
  35                                G1RegionToSpaceMapper* next_bitmap,
  36                                G1RegionToSpaceMapper* bot,
  37                                G1RegionToSpaceMapper* cardtable,
  38                                G1RegionToSpaceMapper* card_counts) {
  39   _allocated_heapregions_length = 0;
  40 
  41   _heap_mapper = heap_storage;
  42 
  43   _prev_bitmap_mapper = prev_bitmap;
  44   _next_bitmap_mapper = next_bitmap;
  45 
  46   _bot_mapper = bot;


  53 
  54   _available_map.resize(_regions.length(), false);
  55   _available_map.clear();
  56 }
  57 
  58 bool HeapRegionManager::is_available(uint region) const {
  59   return _available_map.at(region);
  60 }
  61 
  62 #ifdef ASSERT
  63 bool HeapRegionManager::is_free(HeapRegion* hr) const {
  64   return _free_list.contains(hr);
  65 }
  66 #endif
  67 
  68 HeapRegion* HeapRegionManager::new_heap_region(uint hrm_index) {
  69   G1CollectedHeap* g1h = G1CollectedHeap::heap();
  70   HeapWord* bottom = g1h->bottom_addr_for_region(hrm_index);
  71   MemRegion mr(bottom, bottom + HeapRegion::GrainWords);
  72   assert(reserved().contains(mr), "invariant");
  73   return g1h->allocator()->new_heap_region(hrm_index, g1h->bot_shared(), mr);
  74 }
  75 
  76 void HeapRegionManager::commit_regions(uint index, size_t num_regions) {
  77   guarantee(num_regions > 0, "Must commit more than zero regions");
  78   guarantee(_num_committed + num_regions <= max_length(), "Cannot commit more than the maximum amount of regions");
  79 
  80   _num_committed += (uint)num_regions;
  81 
  82   _heap_mapper->commit_regions(index, num_regions);
  83 
  84   // Also commit auxiliary data
  85   _prev_bitmap_mapper->commit_regions(index, num_regions);
  86   _next_bitmap_mapper->commit_regions(index, num_regions);
  87 
  88   _bot_mapper->commit_regions(index, num_regions);
  89   _cardtable_mapper->commit_regions(index, num_regions);
  90 
  91   _card_counts_mapper->commit_regions(index, num_regions);
  92 }
  93 




   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 #include "precompiled.hpp"
  26 #include "gc_implementation/g1/heapRegion.inline.hpp"
  27 #include "gc_implementation/g1/heapRegionManager.inline.hpp"
  28 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
  29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  30 #include "gc_implementation/g1/concurrentG1Refine.hpp"
  31 #include "memory/allocation.hpp"
  32 
  33 void HeapRegionManager::initialize(G1RegionToSpaceMapper* heap_storage,
  34                                G1RegionToSpaceMapper* prev_bitmap,
  35                                G1RegionToSpaceMapper* next_bitmap,
  36                                G1RegionToSpaceMapper* bot,
  37                                G1RegionToSpaceMapper* cardtable,
  38                                G1RegionToSpaceMapper* card_counts) {
  39   _allocated_heapregions_length = 0;
  40 
  41   _heap_mapper = heap_storage;
  42 
  43   _prev_bitmap_mapper = prev_bitmap;
  44   _next_bitmap_mapper = next_bitmap;
  45 
  46   _bot_mapper = bot;


  53 
  54   _available_map.resize(_regions.length(), false);
  55   _available_map.clear();
  56 }
  57 
  58 bool HeapRegionManager::is_available(uint region) const {
  59   return _available_map.at(region);
  60 }
  61 
  62 #ifdef ASSERT
  63 bool HeapRegionManager::is_free(HeapRegion* hr) const {
  64   return _free_list.contains(hr);
  65 }
  66 #endif
  67 
  68 HeapRegion* HeapRegionManager::new_heap_region(uint hrm_index) {
  69   G1CollectedHeap* g1h = G1CollectedHeap::heap();
  70   HeapWord* bottom = g1h->bottom_addr_for_region(hrm_index);
  71   MemRegion mr(bottom, bottom + HeapRegion::GrainWords);
  72   assert(reserved().contains(mr), "invariant");
  73   return g1h->new_heap_region(hrm_index, mr);
  74 }
  75 
  76 void HeapRegionManager::commit_regions(uint index, size_t num_regions) {
  77   guarantee(num_regions > 0, "Must commit more than zero regions");
  78   guarantee(_num_committed + num_regions <= max_length(), "Cannot commit more than the maximum amount of regions");
  79 
  80   _num_committed += (uint)num_regions;
  81 
  82   _heap_mapper->commit_regions(index, num_regions);
  83 
  84   // Also commit auxiliary data
  85   _prev_bitmap_mapper->commit_regions(index, num_regions);
  86   _next_bitmap_mapper->commit_regions(index, num_regions);
  87 
  88   _bot_mapper->commit_regions(index, num_regions);
  89   _cardtable_mapper->commit_regions(index, num_regions);
  90 
  91   _card_counts_mapper->commit_regions(index, num_regions);
  92 }
  93 


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