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/g1/g1EvacStats.hpp"
  27 #include "gc/shared/gcId.hpp"
  28 #include "trace/tracing.hpp"
  29 
  30 void G1EvacStats::adjust_desired_plab_sz() {
  31   if (PrintPLAB) {
  32     gclog_or_tty->print(" (allocated = " SIZE_FORMAT " wasted = " SIZE_FORMAT " "
  33                         "unused = " SIZE_FORMAT " used = " SIZE_FORMAT " "
  34                         "undo_waste = " SIZE_FORMAT " region_end_waste = " SIZE_FORMAT " "
  35                         "regions filled = %u direct_allocated = " SIZE_FORMAT " "
  36                         "failure_used = " SIZE_FORMAT " failure_waste = " SIZE_FORMAT ") ",
  37                         _allocated, _wasted, _unused, used(), _undo_wasted, _region_end_waste,
  38                         _regions_filled, _direct_allocated, _failure_used, _failure_waste);
  39   }
  40 
  41   if (ResizePLAB) {
  42 
  43     assert(is_object_aligned(max_size()) && min_size() <= max_size(),
  44            "PLAB clipping computation may be incorrect");
  45 

  97     // Take historical weighted average
  98     _filter.sample(cur_plab_sz);
  99     // Clip from above and below, and align to object boundary
 100     size_t plab_sz;
 101     plab_sz = MAX2(min_size(), (size_t)_filter.average());
 102     plab_sz = MIN2(max_size(), plab_sz);
 103     plab_sz = align_object_size(plab_sz);
 104     // Latch the result
 105     _desired_net_plab_sz = plab_sz;
 106     if (PrintPLAB) {
 107       gclog_or_tty->print(" (plab_sz = " SIZE_FORMAT " desired_plab_sz = " SIZE_FORMAT ") ", cur_plab_sz, plab_sz);
 108     }
 109   }
 110   if (PrintPLAB) {
 111     gclog_or_tty->cr();
 112   }
 113   // Clear accumulators for next round.
 114   reset();
 115 }
 116 

   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 "memory/allocation.inline.hpp"
  27 #include "gc/g1/g1EvacStats.hpp"
  28 #include "gc/shared/gcId.hpp"
  29 #include "trace/tracing.hpp"
  30 
  31 void G1EvacStats::adjust_desired_plab_sz() {
  32   if (PrintPLAB) {
  33     gclog_or_tty->print(" (allocated = " SIZE_FORMAT " wasted = " SIZE_FORMAT " "
  34                         "unused = " SIZE_FORMAT " used = " SIZE_FORMAT " "
  35                         "undo_waste = " SIZE_FORMAT " region_end_waste = " SIZE_FORMAT " "
  36                         "regions filled = %u direct_allocated = " SIZE_FORMAT " "
  37                         "failure_used = " SIZE_FORMAT " failure_waste = " SIZE_FORMAT ") ",
  38                         _allocated, _wasted, _unused, used(), _undo_wasted, _region_end_waste,
  39                         _regions_filled, _direct_allocated, _failure_used, _failure_waste);
  40   }
  41 
  42   if (ResizePLAB) {
  43 
  44     assert(is_object_aligned(max_size()) && min_size() <= max_size(),
  45            "PLAB clipping computation may be incorrect");
  46 

  98     // Take historical weighted average
  99     _filter.sample(cur_plab_sz);
 100     // Clip from above and below, and align to object boundary
 101     size_t plab_sz;
 102     plab_sz = MAX2(min_size(), (size_t)_filter.average());
 103     plab_sz = MIN2(max_size(), plab_sz);
 104     plab_sz = align_object_size(plab_sz);
 105     // Latch the result
 106     _desired_net_plab_sz = plab_sz;
 107     if (PrintPLAB) {
 108       gclog_or_tty->print(" (plab_sz = " SIZE_FORMAT " desired_plab_sz = " SIZE_FORMAT ") ", cur_plab_sz, plab_sz);
 109     }
 110   }
 111   if (PrintPLAB) {
 112     gclog_or_tty->cr();
 113   }
 114   // Clear accumulators for next round.
 115   reset();
 116 }
 117 
 118 G1EvacStats::~G1EvacStats() { }