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/g1CollectedHeap.inline.hpp"
  27 #include "gc_implementation/g1/satbQueue.hpp"
  28 #include "memory/allocation.inline.hpp"
  29 #include "memory/sharedHeap.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "runtime/mutexLocker.hpp"
  32 #include "runtime/thread.hpp"
  33 #include "runtime/vmThread.hpp"
  34 


  35 void ObjPtrQueue::flush() {
  36   // The buffer might contain refs into the CSet. We have to filter it
  37   // first before we flush it, otherwise we might end up with an
  38   // enqueued buffer with refs into the CSet which breaks our invariants.
  39   filter();
  40   PtrQueue::flush();
  41 }
  42 
  43 // This method removes entries from an SATB buffer that will not be
  44 // useful to the concurrent marking threads. An entry is removed if it
  45 // satisfies one of the following conditions:
  46 //
  47 // * it points to an object outside the G1 heap (G1's concurrent
  48 //     marking only visits objects inside the G1 heap),
  49 // * it points to an object that has been allocated since marking
  50 //     started (according to SATB those objects do not need to be
  51 //     visited during marking), or
  52 // * it points to an object that has already been marked (no need to
  53 //     process it again).
  54 //

  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/g1CollectedHeap.inline.hpp"
  27 #include "gc_implementation/g1/satbQueue.hpp"
  28 #include "memory/allocation.inline.hpp"
  29 #include "memory/sharedHeap.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "runtime/mutexLocker.hpp"
  32 #include "runtime/thread.hpp"
  33 #include "runtime/vmThread.hpp"
  34 
  35 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
  36 
  37 void ObjPtrQueue::flush() {
  38   // The buffer might contain refs into the CSet. We have to filter it
  39   // first before we flush it, otherwise we might end up with an
  40   // enqueued buffer with refs into the CSet which breaks our invariants.
  41   filter();
  42   PtrQueue::flush();
  43 }
  44 
  45 // This method removes entries from an SATB buffer that will not be
  46 // useful to the concurrent marking threads. An entry is removed if it
  47 // satisfies one of the following conditions:
  48 //
  49 // * it points to an object outside the G1 heap (G1's concurrent
  50 //     marking only visits objects inside the G1 heap),
  51 // * it points to an object that has been allocated since marking
  52 //     started (according to SATB those objects do not need to be
  53 //     visited during marking), or
  54 // * it points to an object that has already been marked (no need to
  55 //     process it again).
  56 //