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/g1/g1BarrierSet.inline.hpp"
27 #include "gc/g1/g1BarrierSetAssembler.hpp"
28 #include "gc/g1/g1CardTable.inline.hpp"
29 #include "gc/g1/g1CollectedHeap.inline.hpp"
30 #include "gc/g1/heapRegion.hpp"
31 #include "gc/g1/satbMarkQueue.hpp"
32 #include "logging/log.hpp"
33 #include "oops/oop.inline.hpp"
34 #include "runtime/mutexLocker.hpp"
35 #include "runtime/thread.inline.hpp"
36 #include "utilities/macros.hpp"
37
38 G1BarrierSet::G1BarrierSet(G1CardTable* card_table) :
39 CardTableBarrierSet(make_barrier_set_assembler<G1BarrierSetAssembler>(),
40 card_table,
41 BarrierSet::FakeRtti(BarrierSet::G1BarrierSet)),
42 _dcqs(JavaThread::dirty_card_queue_set())
43 { }
44
45 void G1BarrierSet::enqueue(oop pre_val) {
46 // Nulls should have been already filtered.
47 assert(oopDesc::is_oop(pre_val, true), "Error");
48
49 if (!JavaThread::satb_mark_queue_set().is_active()) return;
50 Thread* thr = Thread::current();
51 if (thr->is_Java_thread()) {
52 JavaThread* jt = (JavaThread*)thr;
60 void G1BarrierSet::write_ref_array_pre_oop_entry(oop* dst, size_t length) {
61 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
62 bs->write_ref_array_pre(dst, length, false);
63 }
64
65 void G1BarrierSet::write_ref_array_pre_narrow_oop_entry(narrowOop* dst, size_t length) {
66 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
67 bs->write_ref_array_pre(dst, length, false);
68 }
69
70 void G1BarrierSet::write_ref_array_post_entry(HeapWord* dst, size_t length) {
71 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
72 bs->G1BarrierSet::write_ref_array(dst, length);
73 }
74
75 template <class T> void
76 G1BarrierSet::write_ref_array_pre_work(T* dst, size_t count) {
77 if (!JavaThread::satb_mark_queue_set().is_active()) return;
78 T* elem_ptr = dst;
79 for (size_t i = 0; i < count; i++, elem_ptr++) {
80 T heap_oop = oopDesc::load_heap_oop(elem_ptr);
81 if (!oopDesc::is_null(heap_oop)) {
82 enqueue(oopDesc::decode_heap_oop_not_null(heap_oop));
83 }
84 }
85 }
86
87 void G1BarrierSet::write_ref_array_pre(oop* dst, size_t count, bool dest_uninitialized) {
88 if (!dest_uninitialized) {
89 write_ref_array_pre_work(dst, count);
90 }
91 }
92
93 void G1BarrierSet::write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized) {
94 if (!dest_uninitialized) {
95 write_ref_array_pre_work(dst, count);
96 }
97 }
98
99 void G1BarrierSet::write_ref_field_post_slow(volatile jbyte* byte) {
100 // In the slow path, we know a card is not young
101 assert(*byte != G1CardTable::g1_young_card_val(), "slow path invoked without filtering");
102 OrderAccess::storeload();
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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/g1/g1BarrierSet.inline.hpp"
27 #include "gc/g1/g1BarrierSetAssembler.hpp"
28 #include "gc/g1/g1CardTable.inline.hpp"
29 #include "gc/g1/g1CollectedHeap.inline.hpp"
30 #include "gc/g1/heapRegion.hpp"
31 #include "gc/g1/satbMarkQueue.hpp"
32 #include "logging/log.hpp"
33 #include "oops/access.inline.hpp"
34 #include "oops/compressedOops.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "runtime/mutexLocker.hpp"
37 #include "runtime/thread.inline.hpp"
38 #include "utilities/macros.hpp"
39
40 G1BarrierSet::G1BarrierSet(G1CardTable* card_table) :
41 CardTableBarrierSet(make_barrier_set_assembler<G1BarrierSetAssembler>(),
42 card_table,
43 BarrierSet::FakeRtti(BarrierSet::G1BarrierSet)),
44 _dcqs(JavaThread::dirty_card_queue_set())
45 { }
46
47 void G1BarrierSet::enqueue(oop pre_val) {
48 // Nulls should have been already filtered.
49 assert(oopDesc::is_oop(pre_val, true), "Error");
50
51 if (!JavaThread::satb_mark_queue_set().is_active()) return;
52 Thread* thr = Thread::current();
53 if (thr->is_Java_thread()) {
54 JavaThread* jt = (JavaThread*)thr;
62 void G1BarrierSet::write_ref_array_pre_oop_entry(oop* dst, size_t length) {
63 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
64 bs->write_ref_array_pre(dst, length, false);
65 }
66
67 void G1BarrierSet::write_ref_array_pre_narrow_oop_entry(narrowOop* dst, size_t length) {
68 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
69 bs->write_ref_array_pre(dst, length, false);
70 }
71
72 void G1BarrierSet::write_ref_array_post_entry(HeapWord* dst, size_t length) {
73 G1BarrierSet *bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
74 bs->G1BarrierSet::write_ref_array(dst, length);
75 }
76
77 template <class T> void
78 G1BarrierSet::write_ref_array_pre_work(T* dst, size_t count) {
79 if (!JavaThread::satb_mark_queue_set().is_active()) return;
80 T* elem_ptr = dst;
81 for (size_t i = 0; i < count; i++, elem_ptr++) {
82 T heap_oop = RawAccess<>::oop_load(elem_ptr);
83 if (!CompressedOops::is_null(heap_oop)) {
84 enqueue(CompressedOops::decode_not_null(heap_oop));
85 }
86 }
87 }
88
89 void G1BarrierSet::write_ref_array_pre(oop* dst, size_t count, bool dest_uninitialized) {
90 if (!dest_uninitialized) {
91 write_ref_array_pre_work(dst, count);
92 }
93 }
94
95 void G1BarrierSet::write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized) {
96 if (!dest_uninitialized) {
97 write_ref_array_pre_work(dst, count);
98 }
99 }
100
101 void G1BarrierSet::write_ref_field_post_slow(volatile jbyte* byte) {
102 // In the slow path, we know a card is not young
103 assert(*byte != G1CardTable::g1_young_card_val(), "slow path invoked without filtering");
104 OrderAccess::storeload();
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