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src/share/vm/gc/parallel/generationSizer.cpp

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   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/parallel/generationSizer.hpp"
  27 #include "gc/shared/collectorPolicy.hpp"
  28 #include "runtime/globals_extension.hpp"

  29 #include "utilities/globalDefinitions.hpp"
  30 
  31 void GenerationSizer::initialize_alignments() {
  32   _space_alignment = _gen_alignment = default_gen_alignment();
  33   _heap_alignment = compute_heap_alignment();
  34 }
  35 
  36 void GenerationSizer::initialize_flags() {
  37   // Do basic sizing work
  38   GenCollectorPolicy::initialize_flags();
  39 
  40   // The survivor ratio's are calculated "raw", unlike the
  41   // default gc, which adds 2 to the ratio value. We need to
  42   // make sure the values are valid before using them.
  43   if (MinSurvivorRatio < 3) {
  44     FLAG_SET_ERGO(uintx, MinSurvivorRatio, 3);
  45   }
  46 
  47   if (InitialSurvivorRatio < 3) {
  48     FLAG_SET_ERGO(uintx, InitialSurvivorRatio, 3);


   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/parallel/generationSizer.hpp"
  27 #include "gc/shared/collectorPolicy.hpp"
  28 #include "runtime/globals_extension.hpp"
  29 #include "utilities/align.hpp"
  30 #include "utilities/globalDefinitions.hpp"
  31 
  32 void GenerationSizer::initialize_alignments() {
  33   _space_alignment = _gen_alignment = default_gen_alignment();
  34   _heap_alignment = compute_heap_alignment();
  35 }
  36 
  37 void GenerationSizer::initialize_flags() {
  38   // Do basic sizing work
  39   GenCollectorPolicy::initialize_flags();
  40 
  41   // The survivor ratio's are calculated "raw", unlike the
  42   // default gc, which adds 2 to the ratio value. We need to
  43   // make sure the values are valid before using them.
  44   if (MinSurvivorRatio < 3) {
  45     FLAG_SET_ERGO(uintx, MinSurvivorRatio, 3);
  46   }
  47 
  48   if (InitialSurvivorRatio < 3) {
  49     FLAG_SET_ERGO(uintx, InitialSurvivorRatio, 3);
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