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/concurrentG1Refine.hpp"
  27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
  28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  29 #include "gc_implementation/g1/g1HotCardCache.hpp"
  30 
  31 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
  32   _threads(NULL), _n_threads(0),
  33   _hot_card_cache(g1h)
  34 {
  35   // Ergomonically select initial concurrent refinement parameters
  36   if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
  37     FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1));
  38   }
  39   set_green_zone(G1ConcRefinementGreenZone);
  40 
  41   if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
  42     FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
  43   }
  44   set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone()));
  45 
  46   if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
  47     FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
  48   }
  49   set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone()));
  50 
  51   _n_worker_threads = thread_num();
  52   // We need one extra thread to do the young gen rset size sampling.
  53   _n_threads = _n_worker_threads + 1;
  54 
  55   reset_threshold_step();

  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/concurrentG1Refine.hpp"
  27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
  28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  29 #include "gc_implementation/g1/g1HotCardCache.hpp"
  30 
  31 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
  32   _threads(NULL), _n_threads(0),
  33   _hot_card_cache(g1h)
  34 {
  35   // Ergonomically select initial concurrent refinement parameters
  36   if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
  37     FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1));
  38   }
  39   set_green_zone(G1ConcRefinementGreenZone);
  40 
  41   if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
  42     FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
  43   }
  44   set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone()));
  45 
  46   if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
  47     FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
  48   }
  49   set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone()));
  50 
  51   _n_worker_threads = thread_num();
  52   // We need one extra thread to do the young gen rset size sampling.
  53   _n_threads = _n_worker_threads + 1;
  54 
  55   reset_threshold_step();