5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
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 class ChunkArray;
26 class ParScanWithoutBarrierClosure;
27 class ParScanWithBarrierClosure;
28 class ParRootScanWithoutBarrierClosure;
29 class ParRootScanWithBarrierTwoGensClosure;
30 class ParEvacuateFollowersClosure;
31
32 // It would be better if these types could be kept local to the .cpp file,
33 // but they must be here to allow ParScanClosure::do_oop_work to be defined
34 // in genOopClosures.inline.hpp.
35
36 typedef Padded<OopTaskQueue> ObjToScanQueue;
37 typedef GenericTaskQueueSet<ObjToScanQueue> ObjToScanQueueSet;
38
39 class ParKeepAliveClosure: public DefNewGeneration::KeepAliveClosure {
40 private:
41 ParScanWeakRefClosure* _par_cl;
42 protected:
43 template <class T> void do_oop_work(T* p);
44 public:
403 bool take_from_overflow_list(ParScanThreadState* par_scan_state);
404 bool take_from_overflow_list_work(ParScanThreadState* par_scan_state);
405
406 // The task queues to be used by parallel GC threads.
407 ObjToScanQueueSet* task_queues() {
408 return _task_queues;
409 }
410
411 PLABStats* plab_stats() {
412 return &_plab_stats;
413 }
414
415 size_t desired_plab_sz() {
416 return _plab_stats.desired_plab_sz();
417 }
418
419 static oop real_forwardee(oop obj);
420
421 DEBUG_ONLY(static bool is_legal_forward_ptr(oop p);)
422 };
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5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
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 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARNEW_PARNEWGENERATION_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_PARNEWGENERATION_HPP
27
28 #include "gc_implementation/parNew/parGCAllocBuffer.hpp"
29 #include "memory/defNewGeneration.hpp"
30 #include "utilities/taskqueue.hpp"
31
32 class ChunkArray;
33 class ParScanWithoutBarrierClosure;
34 class ParScanWithBarrierClosure;
35 class ParRootScanWithoutBarrierClosure;
36 class ParRootScanWithBarrierTwoGensClosure;
37 class ParEvacuateFollowersClosure;
38
39 // It would be better if these types could be kept local to the .cpp file,
40 // but they must be here to allow ParScanClosure::do_oop_work to be defined
41 // in genOopClosures.inline.hpp.
42
43 typedef Padded<OopTaskQueue> ObjToScanQueue;
44 typedef GenericTaskQueueSet<ObjToScanQueue> ObjToScanQueueSet;
45
46 class ParKeepAliveClosure: public DefNewGeneration::KeepAliveClosure {
47 private:
48 ParScanWeakRefClosure* _par_cl;
49 protected:
50 template <class T> void do_oop_work(T* p);
51 public:
410 bool take_from_overflow_list(ParScanThreadState* par_scan_state);
411 bool take_from_overflow_list_work(ParScanThreadState* par_scan_state);
412
413 // The task queues to be used by parallel GC threads.
414 ObjToScanQueueSet* task_queues() {
415 return _task_queues;
416 }
417
418 PLABStats* plab_stats() {
419 return &_plab_stats;
420 }
421
422 size_t desired_plab_sz() {
423 return _plab_stats.desired_plab_sz();
424 }
425
426 static oop real_forwardee(oop obj);
427
428 DEBUG_ONLY(static bool is_legal_forward_ptr(oop p);)
429 };
430
431 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_PARNEWGENERATION_HPP
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