16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "gc/g1/g1Arguments.hpp"
28 #include "gc/g1/g1CollectedHeap.inline.hpp"
29 #include "gc/g1/g1HeapVerifier.hpp"
30 #include "gc/g1/heapRegion.hpp"
31 #include "gc/g1/heapRegionRemSet.hpp"
32 #include "gc/shared/cardTableRS.hpp"
33 #include "gc/shared/gcArguments.hpp"
34 #include "gc/shared/workerPolicy.hpp"
35 #include "runtime/globals.hpp"
36 #include "runtime/globals_extension.hpp"
37
38 static const double MaxRamFractionForYoung = 0.8;
39 size_t G1Arguments::MaxMemoryForYoung;
40
41 static size_t calculate_heap_alignment(size_t space_alignment) {
42 size_t card_table_alignment = CardTableRS::ct_max_alignment_constraint();
43 size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size();
44 return MAX3(card_table_alignment, space_alignment, page_size);
45 }
46
47 void G1Arguments::initialize_alignments() {
48 // Set up the region size and associated fields.
49 //
50 // There is a circular dependency here. We base the region size on the heap
51 // size, but the heap size should be aligned with the region size. To get
52 // around this we use the unaligned values for the heap.
53 HeapRegion::setup_heap_region_size(MaxHeapSize);
54 HeapRegionRemSet::setup_remset_size();
55
56 SpaceAlignment = HeapRegion::GrainBytes;
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16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "gc/g1/g1Arguments.hpp"
28 #include "gc/g1/g1CollectedHeap.inline.hpp"
29 #include "gc/g1/g1HeapVerifier.hpp"
30 #include "gc/g1/heapRegion.hpp"
31 #include "gc/g1/heapRegionRemSet.hpp"
32 #include "gc/shared/cardTableRS.hpp"
33 #include "gc/shared/gcArguments.hpp"
34 #include "gc/shared/workerPolicy.hpp"
35 #include "runtime/globals.hpp"
36
37 static const double MaxRamFractionForYoung = 0.8;
38 size_t G1Arguments::MaxMemoryForYoung;
39
40 static size_t calculate_heap_alignment(size_t space_alignment) {
41 size_t card_table_alignment = CardTableRS::ct_max_alignment_constraint();
42 size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size();
43 return MAX3(card_table_alignment, space_alignment, page_size);
44 }
45
46 void G1Arguments::initialize_alignments() {
47 // Set up the region size and associated fields.
48 //
49 // There is a circular dependency here. We base the region size on the heap
50 // size, but the heap size should be aligned with the region size. To get
51 // around this we use the unaligned values for the heap.
52 HeapRegion::setup_heap_region_size(MaxHeapSize);
53 HeapRegionRemSet::setup_remset_size();
54
55 SpaceAlignment = HeapRegion::GrainBytes;
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