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src/hotspot/share/gc/g1/g1YoungGenSizer.cpp

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  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/g1Arguments.hpp"
  27 #include "gc/g1/g1HeterogeneousHeapYoungGenSizer.hpp"
  28 #include "gc/g1/g1YoungGenSizer.hpp"
  29 #include "gc/g1/heapRegion.hpp"
  30 #include "logging/log.hpp"
  31 #include "runtime/globals_extension.hpp"
  32 
  33 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults),
  34   _use_adaptive_sizing(true), _min_desired_young_length(0), _max_desired_young_length(0) {
  35 
  36   if (FLAG_IS_CMDLINE(NewRatio)) {
  37     if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) {
  38       log_warning(gc, ergo)("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
  39     } else {
  40       _sizer_kind = SizerNewRatio;
  41       _use_adaptive_sizing = false;
  42       return;
  43     }
  44   }
  45 
  46   if (NewSize > MaxNewSize) {
  47     if (FLAG_IS_CMDLINE(MaxNewSize)) {
  48       log_warning(gc, ergo)("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
  49                             "A new max generation size of " SIZE_FORMAT "k will be used.",
  50                             NewSize/K, MaxNewSize/K, NewSize/K);
  51     }




  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/g1Arguments.hpp"
  27 #include "gc/g1/g1HeterogeneousHeapYoungGenSizer.hpp"
  28 #include "gc/g1/g1YoungGenSizer.hpp"
  29 #include "gc/g1/heapRegion.hpp"
  30 #include "logging/log.hpp"
  31 #include "runtime/globals.hpp"
  32 
  33 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults),
  34   _use_adaptive_sizing(true), _min_desired_young_length(0), _max_desired_young_length(0) {
  35 
  36   if (FLAG_IS_CMDLINE(NewRatio)) {
  37     if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) {
  38       log_warning(gc, ergo)("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
  39     } else {
  40       _sizer_kind = SizerNewRatio;
  41       _use_adaptive_sizing = false;
  42       return;
  43     }
  44   }
  45 
  46   if (NewSize > MaxNewSize) {
  47     if (FLAG_IS_CMDLINE(MaxNewSize)) {
  48       log_warning(gc, ergo)("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
  49                             "A new max generation size of " SIZE_FORMAT "k will be used.",
  50                             NewSize/K, MaxNewSize/K, NewSize/K);
  51     }


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