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_implementation/parallelScavenge/adjoiningGenerations.hpp" 27 #include "gc_implementation/parallelScavenge/adjoiningVirtualSpaces.hpp" 28 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" 29 30 // If boundary moving is being used, create the young gen and old 31 // gen with ASPSYoungGen and ASPSOldGen, respectively. Revert to 32 // the old behavior otherwise (with PSYoungGen and PSOldGen). 33 34 AdjoiningGenerations::AdjoiningGenerations(ReservedSpace old_young_rs, 35 size_t init_low_byte_size, 36 size_t min_low_byte_size, 37 size_t max_low_byte_size, 38 size_t init_high_byte_size, 39 size_t min_high_byte_size, 40 size_t max_high_byte_size, 41 size_t alignment) : 42 _virtual_spaces(old_young_rs, min_low_byte_size, 43 min_high_byte_size, alignment) { 44 assert(min_low_byte_size <= init_low_byte_size && 45 init_low_byte_size <= max_low_byte_size, "Parameter check"); 46 assert(min_high_byte_size <= init_high_byte_size && 47 init_high_byte_size <= max_high_byte_size, "Parameter check"); 48 // Create the generations differently based on the option to 49 // move the boundary. 50 if (UseAdaptiveGCBoundary) { 51 // Initialize the adjoining virtual spaces. Then pass the 52 // a virtual to each generation for initialization of the 53 // generation. 54 55 // Does the actual creation of the virtual spaces 56 _virtual_spaces.initialize(max_low_byte_size, 57 init_low_byte_size, 58 init_high_byte_size); 59 60 // Place the young gen at the high end. Passes in the virtual space. 61 _young_gen = new ASPSYoungGen(_virtual_spaces.high(), 62 _virtual_spaces.high()->committed_size(), 63 min_high_byte_size, | 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_implementation/parallelScavenge/adjoiningGenerations.hpp" 27 #include "gc_implementation/parallelScavenge/adjoiningVirtualSpaces.hpp" 28 #include "gc_implementation/parallelScavenge/generationSizer.hpp" 29 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" 30 31 // If boundary moving is being used, create the young gen and old 32 // gen with ASPSYoungGen and ASPSOldGen, respectively. Revert to 33 // the old behavior otherwise (with PSYoungGen and PSOldGen). 34 35 AdjoiningGenerations::AdjoiningGenerations(ReservedSpace old_young_rs, 36 GenerationSizer* policy, 37 size_t alignment) : 38 _virtual_spaces(old_young_rs, policy->min_gen1_size(), 39 policy->min_gen0_size(), alignment) { 40 size_t init_low_byte_size = policy->initial_gen1_size(); 41 size_t min_low_byte_size = policy->min_gen1_size(); 42 size_t max_low_byte_size = policy->max_gen1_size(); 43 size_t init_high_byte_size = policy->initial_gen0_size(); 44 size_t min_high_byte_size = policy->min_gen0_size(); 45 size_t max_high_byte_size = policy->max_gen0_size(); 46 47 assert(min_low_byte_size <= init_low_byte_size && 48 init_low_byte_size <= max_low_byte_size, "Parameter check"); 49 assert(min_high_byte_size <= init_high_byte_size && 50 init_high_byte_size <= max_high_byte_size, "Parameter check"); 51 // Create the generations differently based on the option to 52 // move the boundary. 53 if (UseAdaptiveGCBoundary) { 54 // Initialize the adjoining virtual spaces. Then pass the 55 // a virtual to each generation for initialization of the 56 // generation. 57 58 // Does the actual creation of the virtual spaces 59 _virtual_spaces.initialize(max_low_byte_size, 60 init_low_byte_size, 61 init_high_byte_size); 62 63 // Place the young gen at the high end. Passes in the virtual space. 64 _young_gen = new ASPSYoungGen(_virtual_spaces.high(), 65 _virtual_spaces.high()->committed_size(), 66 min_high_byte_size, |