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/g1CollectedHeap.inline.hpp"
27 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
28 #include "gc_implementation/g1/heapRegion.hpp"
29 #include "gc_implementation/g1/satbQueue.hpp"
30 #include "runtime/atomic.inline.hpp"
31 #include "runtime/mutexLocker.hpp"
32 #include "runtime/orderAccess.inline.hpp"
33 #include "runtime/thread.inline.hpp"
34
35 G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap,
36 int max_covered_regions) :
37 CardTableModRefBSForCTRS(whole_heap, max_covered_regions)
38 {
39 _kind = G1SATBCT;
40 }
41
42 void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
43 // Nulls should have been already filtered.
44 assert(pre_val->is_oop(true), "Error");
45
46 if (!JavaThread::satb_mark_queue_set().is_active()) return;
47 Thread* thr = Thread::current();
48 if (thr->is_Java_thread()) {
49 JavaThread* jt = (JavaThread*)thr;
50 jt->satb_mark_queue().enqueue(pre_val);
51 } else {
52 MutexLockerEx x(Shared_SATB_Q_lock, Mutex::_no_safepoint_check_flag);
53 JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val);
54 }
55 }
56
57 template <class T> void
115 } else {
116 for (jbyte* i = first; i < last; i++) {
117 *i = g1_young_gen;
118 }
119 }
120 }
121
122 #ifndef PRODUCT
123 void G1SATBCardTableModRefBS::verify_g1_young_region(MemRegion mr) {
124 verify_region(mr, g1_young_gen, true);
125 }
126 #endif
127
128 void G1SATBCardTableLoggingModRefBSChangedListener::on_commit(uint start_idx, size_t num_regions, bool zero_filled) {
129 // Default value for a clean card on the card table is -1. So we cannot take advantage of the zero_filled parameter.
130 MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_idx), num_regions * HeapRegion::GrainWords);
131 _card_table->clear(mr);
132 }
133
134 G1SATBCardTableLoggingModRefBS::
135 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap,
136 int max_covered_regions) :
137 G1SATBCardTableModRefBS(whole_heap, max_covered_regions),
138 _dcqs(JavaThread::dirty_card_queue_set()),
139 _listener()
140 {
141 _kind = G1SATBCTLogging;
142 _listener.set_card_table(this);
143 }
144
145 void G1SATBCardTableLoggingModRefBS::initialize(G1RegionToSpaceMapper* mapper) {
146 mapper->set_mapping_changed_listener(&_listener);
147
148 _byte_map_size = mapper->reserved().byte_size();
149
150 _guard_index = cards_required(_whole_heap.word_size()) - 1;
151 _last_valid_index = _guard_index - 1;
152
153 HeapWord* low_bound = _whole_heap.start();
154 HeapWord* high_bound = _whole_heap.end();
155
156 _cur_covered_regions = 1;
157 _covered[0] = _whole_heap;
|
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/g1CollectedHeap.inline.hpp"
27 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
28 #include "gc_implementation/g1/heapRegion.hpp"
29 #include "gc_implementation/g1/satbQueue.hpp"
30 #include "runtime/atomic.inline.hpp"
31 #include "runtime/mutexLocker.hpp"
32 #include "runtime/orderAccess.inline.hpp"
33 #include "runtime/thread.inline.hpp"
34
35 G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap) :
36 CardTableModRefBSForCTRS(whole_heap)
37 {
38 _kind = G1SATBCT;
39 }
40
41 void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
42 // Nulls should have been already filtered.
43 assert(pre_val->is_oop(true), "Error");
44
45 if (!JavaThread::satb_mark_queue_set().is_active()) return;
46 Thread* thr = Thread::current();
47 if (thr->is_Java_thread()) {
48 JavaThread* jt = (JavaThread*)thr;
49 jt->satb_mark_queue().enqueue(pre_val);
50 } else {
51 MutexLockerEx x(Shared_SATB_Q_lock, Mutex::_no_safepoint_check_flag);
52 JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val);
53 }
54 }
55
56 template <class T> void
114 } else {
115 for (jbyte* i = first; i < last; i++) {
116 *i = g1_young_gen;
117 }
118 }
119 }
120
121 #ifndef PRODUCT
122 void G1SATBCardTableModRefBS::verify_g1_young_region(MemRegion mr) {
123 verify_region(mr, g1_young_gen, true);
124 }
125 #endif
126
127 void G1SATBCardTableLoggingModRefBSChangedListener::on_commit(uint start_idx, size_t num_regions, bool zero_filled) {
128 // Default value for a clean card on the card table is -1. So we cannot take advantage of the zero_filled parameter.
129 MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_idx), num_regions * HeapRegion::GrainWords);
130 _card_table->clear(mr);
131 }
132
133 G1SATBCardTableLoggingModRefBS::
134 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap) :
135 G1SATBCardTableModRefBS(whole_heap),
136 _dcqs(JavaThread::dirty_card_queue_set()),
137 _listener()
138 {
139 _kind = G1SATBCTLogging;
140 _listener.set_card_table(this);
141 }
142
143 void G1SATBCardTableLoggingModRefBS::initialize(G1RegionToSpaceMapper* mapper) {
144 mapper->set_mapping_changed_listener(&_listener);
145
146 _byte_map_size = mapper->reserved().byte_size();
147
148 _guard_index = cards_required(_whole_heap.word_size()) - 1;
149 _last_valid_index = _guard_index - 1;
150
151 HeapWord* low_bound = _whole_heap.start();
152 HeapWord* high_bound = _whole_heap.end();
153
154 _cur_covered_regions = 1;
155 _covered[0] = _whole_heap;
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