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src/share/vm/gc/g1/g1RemSet.hpp

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rev 9740 : imported patch 8145674-fix-includes-and-forward-declarations-in-g1remset-files
rev 9741 : [mq]: 8145674-vsimonis


   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_G1REMSET_HPP
  26 #define SHARE_VM_GC_G1_G1REMSET_HPP
  27 

  28 #include "gc/g1/g1RemSetSummary.hpp"



  29 
  30 // A G1RemSet provides ways of iterating over pointers into a selected
  31 // collection set.
  32 
  33 class G1CollectedHeap;


  34 class ConcurrentG1Refine;



  35 class G1ParPushHeapRSClosure;
  36 class outputStream;

  37 
  38 // A G1RemSet in which each heap region has a rem set that records the
  39 // external heap references into it.  Uses a mod ref bs to track updates,
  40 // so that they can be used to update the individual region remsets.
  41 
  42 class G1RemSet: public CHeapObj<mtGC> {
  43 private:
  44   G1RemSetSummary _prev_period_summary;
  45 
  46   // A DirtyCardQueueSet that is used to hold cards that contain
  47   // references into the current collection set. This is used to
  48   // update the remembered sets of the regions in the collection
  49   // set in the event of an evacuation failure.
  50   DirtyCardQueueSet _into_cset_dirty_card_queue_set;
  51 
  52 protected:
  53   G1CollectedHeap* _g1;
  54   size_t _conc_refine_cards;
  55   uint n_workers();
  56 




   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_G1REMSET_HPP
  26 #define SHARE_VM_GC_G1_G1REMSET_HPP
  27 
  28 #include "gc/g1/dirtyCardQueue.hpp"
  29 #include "gc/g1/g1RemSetSummary.hpp"
  30 #include "gc/g1/heapRegion.hpp"
  31 #include "memory/allocation.hpp"
  32 #include "memory/iterator.hpp"
  33 
  34 // A G1RemSet provides ways of iterating over pointers into a selected
  35 // collection set.
  36 
  37 class BitMap;
  38 class CardTableModRefBS;
  39 class G1BlockOffsetSharedArray;
  40 class ConcurrentG1Refine;
  41 class CodeBlobClosure;
  42 class G1CollectedHeap;
  43 class G1CollectorPolicy;
  44 class G1ParPushHeapRSClosure;
  45 class G1SATBCardTableModRefBS;
  46 class HeapRegionClaimer;
  47 
  48 // A G1RemSet in which each heap region has a rem set that records the
  49 // external heap references into it.  Uses a mod ref bs to track updates,
  50 // so that they can be used to update the individual region remsets.
  51 
  52 class G1RemSet: public CHeapObj<mtGC> {
  53 private:
  54   G1RemSetSummary _prev_period_summary;
  55 
  56   // A DirtyCardQueueSet that is used to hold cards that contain
  57   // references into the current collection set. This is used to
  58   // update the remembered sets of the regions in the collection
  59   // set in the event of an evacuation failure.
  60   DirtyCardQueueSet _into_cset_dirty_card_queue_set;
  61 
  62 protected:
  63   G1CollectedHeap* _g1;
  64   size_t _conc_refine_cards;
  65   uint n_workers();
  66 


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