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_interface/collectedHeap.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "memory/cardTableModRefBS.inline.hpp"
  29 #include "memory/cardTableRS.hpp"
  30 #include "memory/genCollectedHeap.hpp"
  31 #include "memory/space.hpp"
  32 #include "memory/space.inline.hpp"
  33 #include "memory/universe.hpp"

  34 #include "runtime/java.hpp"
  35 #include "runtime/mutexLocker.hpp"
  36 #include "runtime/virtualspace.hpp"
  37 #include "services/memTracker.hpp"
  38 #include "utilities/macros.hpp"
  39 #ifdef COMPILER1
  40 #include "c1/c1_LIR.hpp"
  41 #include "c1/c1_LIRGenerator.hpp"
  42 #endif
  43 
  44 // This kind of "BarrierSet" allows a "CollectedHeap" to detect and
  45 // enumerate ref fields that have been modified (since the last
  46 // enumeration.)
  47 
  48 size_t CardTableModRefBS::compute_byte_map_size()
  49 {
  50   assert(_guard_index == cards_required(_whole_heap.word_size()) - 1,
  51                                         "uninitialized, check declaration order");
  52   assert(_page_size != 0, "uninitialized, check declaration order");
  53   const size_t granularity = os::vm_allocation_granularity();
  54   return align_size_up(_guard_index + 1, MAX2(_page_size, granularity));
  55 }
  56 

  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_interface/collectedHeap.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "memory/cardTableModRefBS.inline.hpp"
  29 #include "memory/cardTableRS.hpp"
  30 #include "memory/genCollectedHeap.hpp"
  31 #include "memory/space.hpp"
  32 #include "memory/space.inline.hpp"
  33 #include "memory/universe.hpp"
  34 #include "memory/virtualspace.hpp"
  35 #include "runtime/java.hpp"
  36 #include "runtime/mutexLocker.hpp"

  37 #include "services/memTracker.hpp"
  38 #include "utilities/macros.hpp"
  39 #ifdef COMPILER1
  40 #include "c1/c1_LIR.hpp"
  41 #include "c1/c1_LIRGenerator.hpp"
  42 #endif
  43 
  44 // This kind of "BarrierSet" allows a "CollectedHeap" to detect and
  45 // enumerate ref fields that have been modified (since the last
  46 // enumeration.)
  47 
  48 size_t CardTableModRefBS::compute_byte_map_size()
  49 {
  50   assert(_guard_index == cards_required(_whole_heap.word_size()) - 1,
  51                                         "uninitialized, check declaration order");
  52   assert(_page_size != 0, "uninitialized, check declaration order");
  53   const size_t granularity = os::vm_allocation_granularity();
  54   return align_size_up(_guard_index + 1, MAX2(_page_size, granularity));
  55 }
  56