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/g1/concurrentMark.inline.hpp"
27 #include "gc_implementation/g1/dirtyCardQueue.hpp"
28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
29 #include "gc_implementation/g1/g1EvacFailure.hpp"
30 #include "gc_implementation/g1/g1_globals.hpp"
31 #include "gc_implementation/g1/g1OopClosures.inline.hpp"
32 #include "gc_implementation/g1/heapRegion.hpp"
33 #include "gc_implementation/g1/heapRegionRemSet.hpp"
34
35 class UpdateRSetDeferred : public OopsInHeapRegionClosure {
36 private:
37 G1CollectedHeap* _g1;
38 DirtyCardQueue *_dcq;
39 G1SATBCardTableModRefBS* _ct_bs;
40
41 public:
42 UpdateRSetDeferred(G1CollectedHeap* g1, DirtyCardQueue* dcq) :
43 _g1(g1), _ct_bs(_g1->g1_barrier_set()), _dcq(dcq) {}
44
45 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
46 virtual void do_oop( oop* p) { do_oop_work(p); }
47 template <class T> void do_oop_work(T* p) {
48 assert(_from->is_in_reserved(p), "paranoia");
169 };
170
171 class RemoveSelfForwardPtrHRClosure: public HeapRegionClosure {
172 G1CollectedHeap* _g1h;
173 ConcurrentMark* _cm;
174 uint _worker_id;
175 HeapRegionClaimer* _hrclaimer;
176
177 DirtyCardQueue _dcq;
178 UpdateRSetDeferred _update_rset_cl;
179
180 public:
181 RemoveSelfForwardPtrHRClosure(G1CollectedHeap* g1h,
182 uint worker_id,
183 HeapRegionClaimer* hrclaimer) :
184 _g1h(g1h), _dcq(&g1h->dirty_card_queue_set()), _update_rset_cl(g1h, &_dcq),
185 _worker_id(worker_id), _cm(_g1h->concurrent_mark()), _hrclaimer(hrclaimer) {
186 }
187
188 bool doHeapRegion(HeapRegion *hr) {
189 bool during_initial_mark = _g1h->g1_policy()->during_initial_mark_pause();
190 bool during_conc_mark = _g1h->mark_in_progress();
191
192 assert(!hr->is_humongous(), "sanity");
193 assert(hr->in_collection_set(), "bad CS");
194
195 if (_hrclaimer->claim_region(hr->hrm_index())) {
196 if (hr->evacuation_failed()) {
197 RemoveSelfForwardPtrObjClosure rspc(_g1h, _cm, hr, &_update_rset_cl,
198 during_initial_mark,
199 during_conc_mark,
200 _worker_id);
201
202 hr->note_self_forwarding_removal_start(during_initial_mark,
203 during_conc_mark);
204 _g1h->check_bitmaps("Self-Forwarding Ptr Removal", hr);
205
206 // In the common case (i.e. when there is no evacuation
207 // failure) we make sure that the following is done when
208 // the region is freed so that it is "ready-to-go" when it's
209 // re-allocated. However, when evacuation failure happens, a
210 // region will remain in the heap and might ultimately be added
|
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/g1/concurrentMark.inline.hpp"
27 #include "gc_implementation/g1/dirtyCardQueue.hpp"
28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
29 #include "gc_implementation/g1/g1CollectorState.hpp"
30 #include "gc_implementation/g1/g1EvacFailure.hpp"
31 #include "gc_implementation/g1/g1_globals.hpp"
32 #include "gc_implementation/g1/g1OopClosures.inline.hpp"
33 #include "gc_implementation/g1/heapRegion.hpp"
34 #include "gc_implementation/g1/heapRegionRemSet.hpp"
35
36 class UpdateRSetDeferred : public OopsInHeapRegionClosure {
37 private:
38 G1CollectedHeap* _g1;
39 DirtyCardQueue *_dcq;
40 G1SATBCardTableModRefBS* _ct_bs;
41
42 public:
43 UpdateRSetDeferred(G1CollectedHeap* g1, DirtyCardQueue* dcq) :
44 _g1(g1), _ct_bs(_g1->g1_barrier_set()), _dcq(dcq) {}
45
46 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
47 virtual void do_oop( oop* p) { do_oop_work(p); }
48 template <class T> void do_oop_work(T* p) {
49 assert(_from->is_in_reserved(p), "paranoia");
170 };
171
172 class RemoveSelfForwardPtrHRClosure: public HeapRegionClosure {
173 G1CollectedHeap* _g1h;
174 ConcurrentMark* _cm;
175 uint _worker_id;
176 HeapRegionClaimer* _hrclaimer;
177
178 DirtyCardQueue _dcq;
179 UpdateRSetDeferred _update_rset_cl;
180
181 public:
182 RemoveSelfForwardPtrHRClosure(G1CollectedHeap* g1h,
183 uint worker_id,
184 HeapRegionClaimer* hrclaimer) :
185 _g1h(g1h), _dcq(&g1h->dirty_card_queue_set()), _update_rset_cl(g1h, &_dcq),
186 _worker_id(worker_id), _cm(_g1h->concurrent_mark()), _hrclaimer(hrclaimer) {
187 }
188
189 bool doHeapRegion(HeapRegion *hr) {
190 bool during_initial_mark = _g1h->collector_state()->during_initial_mark_pause();
191 bool during_conc_mark = _g1h->collector_state()->mark_in_progress();
192
193 assert(!hr->is_humongous(), "sanity");
194 assert(hr->in_collection_set(), "bad CS");
195
196 if (_hrclaimer->claim_region(hr->hrm_index())) {
197 if (hr->evacuation_failed()) {
198 RemoveSelfForwardPtrObjClosure rspc(_g1h, _cm, hr, &_update_rset_cl,
199 during_initial_mark,
200 during_conc_mark,
201 _worker_id);
202
203 hr->note_self_forwarding_removal_start(during_initial_mark,
204 during_conc_mark);
205 _g1h->check_bitmaps("Self-Forwarding Ptr Removal", hr);
206
207 // In the common case (i.e. when there is no evacuation
208 // failure) we make sure that the following is done when
209 // the region is freed so that it is "ready-to-go" when it's
210 // re-allocated. However, when evacuation failure happens, a
211 // region will remain in the heap and might ultimately be added
|