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/g1/concurrentG1Refine.hpp"
27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
29 #include "gc_implementation/g1/g1HotCardCache.hpp"
30 #include "runtime/java.hpp"
31
32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
33 _threads(NULL), _n_threads(0),
34 _hot_card_cache(g1h)
35 {
36 // Ergomonically select initial concurrent refinement parameters
37 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
38 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1));
39 }
40 set_green_zone(G1ConcRefinementGreenZone);
41
42 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
43 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
44 }
45 set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone()));
46
47 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
48 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
49 }
50 set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone()));
51
52 _n_worker_threads = thread_num();
53 // We need one extra thread to do the young gen rset size sampling.
54 _n_threads = _n_worker_threads + 1;
55
56 reset_threshold_step();
57
58 _threads = NEW_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _n_threads, mtGC);
59
60 uint worker_id_offset = DirtyCardQueueSet::num_par_ids();
61
62 ConcurrentG1RefineThread *next = NULL;
63 for (uint i = _n_threads - 1; i != UINT_MAX; i--) {
64 ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, worker_id_offset, i);
65 assert(t != NULL, "Conc refine should have been created");
66 if (t->osthread() == NULL) {
67 vm_shutdown_during_initialization("Could not create ConcurrentG1RefineThread");
68 }
69
70 assert(t->cg1r() == this, "Conc refine thread should refer to this");
71 _threads[i] = t;
72 next = t;
73 }
74 }
75
76 void ConcurrentG1Refine::reset_threshold_step() {
77 if (FLAG_IS_DEFAULT(G1ConcRefinementThresholdStep)) {
78 _thread_threshold_step = (yellow_zone() - green_zone()) / (worker_thread_num() + 1);
79 } else {
80 _thread_threshold_step = G1ConcRefinementThresholdStep;
81 }
82 }
83
84 void ConcurrentG1Refine::init() {
|
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/g1/concurrentG1Refine.hpp"
27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
29 #include "gc_implementation/g1/g1HotCardCache.hpp"
30 #include "runtime/java.hpp"
31
32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure) :
33 _threads(NULL), _n_threads(0),
34 _hot_card_cache(g1h)
35 {
36 // Ergomonically select initial concurrent refinement parameters
37 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
38 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1));
39 }
40 set_green_zone(G1ConcRefinementGreenZone);
41
42 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
43 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
44 }
45 set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone()));
46
47 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
48 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
49 }
50 set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone()));
51
52 _n_worker_threads = thread_num();
53 // We need one extra thread to do the young gen rset size sampling.
54 _n_threads = _n_worker_threads + 1;
55
56 reset_threshold_step();
57
58 _threads = NEW_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _n_threads, mtGC);
59
60 uint worker_id_offset = DirtyCardQueueSet::num_par_ids();
61
62 ConcurrentG1RefineThread *next = NULL;
63 for (uint i = _n_threads - 1; i != UINT_MAX; i--) {
64 ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, refine_closure, worker_id_offset, i);
65 assert(t != NULL, "Conc refine should have been created");
66 if (t->osthread() == NULL) {
67 vm_shutdown_during_initialization("Could not create ConcurrentG1RefineThread");
68 }
69
70 assert(t->cg1r() == this, "Conc refine thread should refer to this");
71 _threads[i] = t;
72 next = t;
73 }
74 }
75
76 void ConcurrentG1Refine::reset_threshold_step() {
77 if (FLAG_IS_DEFAULT(G1ConcRefinementThresholdStep)) {
78 _thread_threshold_step = (yellow_zone() - green_zone()) / (worker_thread_num() + 1);
79 } else {
80 _thread_threshold_step = G1ConcRefinementThresholdStep;
81 }
82 }
83
84 void ConcurrentG1Refine::init() {
|