26 #define SHARE_VM_GC_G1_G1OOPCLOSURES_HPP
27
28 #include "gc/g1/g1InCSetState.hpp"
29 #include "memory/iterator.hpp"
30 #include "oops/markOop.hpp"
31
32 class HeapRegion;
33 class G1CollectedHeap;
34 class G1RemSet;
35 class G1ConcurrentMark;
36 class DirtyCardToOopClosure;
37 class G1CMBitMap;
38 class G1ParScanThreadState;
39 class G1CMTask;
40 class ReferenceProcessor;
41
42 class G1ScanClosureBase : public BasicOopIterateClosure {
43 protected:
44 G1CollectedHeap* _g1h;
45 G1ParScanThreadState* _par_scan_state;
46 HeapRegion* _from;
47
48 G1ScanClosureBase(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state);
49 ~G1ScanClosureBase() { }
50
51 template <class T>
52 inline void prefetch_and_push(T* p, oop const obj);
53
54 template <class T>
55 inline void handle_non_cset_obj_common(InCSetState const state, T* p, oop const obj);
56 public:
57 virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
58
59 void set_region(HeapRegion* from) { _from = from; }
60
61 inline void trim_queue_partially();
62 };
63
64 // Used during the Update RS phase to refine remaining cards in the DCQ during garbage collection.
65 class G1ScanObjsDuringUpdateRSClosure: public G1ScanClosureBase {
66 uint _worker_i;
67
68 public:
69 G1ScanObjsDuringUpdateRSClosure(G1CollectedHeap* g1h,
70 G1ParScanThreadState* pss,
71 uint worker_i) :
72 G1ScanClosureBase(g1h, pss), _worker_i(worker_i) { }
73
74 template <class T> void do_oop_work(T* p);
75 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
76 virtual void do_oop(oop* p) { do_oop_work(p); }
77 };
78
79 // Used during the Scan RS phase to scan cards from the remembered set during garbage collection.
80 class G1ScanObjsDuringScanRSClosure : public G1ScanClosureBase {
81 public:
82 G1ScanObjsDuringScanRSClosure(G1CollectedHeap* g1h,
83 G1ParScanThreadState* par_scan_state):
84 G1ScanClosureBase(g1h, par_scan_state) { }
85
86 template <class T> void do_oop_work(T* p);
87 virtual void do_oop(oop* p) { do_oop_work(p); }
88 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
89 };
90
91 // This closure is applied to the fields of the objects that have just been copied during evacuation.
92 class G1ScanEvacuatedObjClosure : public G1ScanClosureBase {
93 public:
94 G1ScanEvacuatedObjClosure(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state) :
95 G1ScanClosureBase(g1h, par_scan_state) { }
96
97 template <class T> void do_oop_work(T* p);
98 virtual void do_oop(oop* p) { do_oop_work(p); }
99 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
100
101 // We need to do reference discovery while processing evacuated objects.
102 virtual ReferenceIterationMode reference_iteration_mode() { return DO_DISCOVERED_AND_DISCOVERY; }
103
104 void set_ref_discoverer(ReferenceDiscoverer* rd) {
105 set_ref_discoverer_internal(rd);
106 }
107 };
108
109 // Add back base class for metadata
110 class G1ParCopyHelper : public OopClosure {
111 protected:
112 G1CollectedHeap* _g1h;
113 G1ParScanThreadState* _par_scan_state;
114 uint _worker_id; // Cache value from par_scan_state.
115 ClassLoaderData* _scanned_cld;
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26 #define SHARE_VM_GC_G1_G1OOPCLOSURES_HPP
27
28 #include "gc/g1/g1InCSetState.hpp"
29 #include "memory/iterator.hpp"
30 #include "oops/markOop.hpp"
31
32 class HeapRegion;
33 class G1CollectedHeap;
34 class G1RemSet;
35 class G1ConcurrentMark;
36 class DirtyCardToOopClosure;
37 class G1CMBitMap;
38 class G1ParScanThreadState;
39 class G1CMTask;
40 class ReferenceProcessor;
41
42 class G1ScanClosureBase : public BasicOopIterateClosure {
43 protected:
44 G1CollectedHeap* _g1h;
45 G1ParScanThreadState* _par_scan_state;
46
47 G1ScanClosureBase(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state);
48 ~G1ScanClosureBase() { }
49
50 template <class T>
51 inline void prefetch_and_push(T* p, oop const obj);
52
53 template <class T>
54 inline void handle_non_cset_obj_common(InCSetState const state, T* p, oop const obj);
55 public:
56 virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
57
58 inline void trim_queue_partially();
59 };
60
61 // Used during the Update RS phase to refine remaining cards in the DCQ during garbage collection.
62 class G1ScanObjsDuringUpdateRSClosure : public G1ScanClosureBase {
63 public:
64 G1ScanObjsDuringUpdateRSClosure(G1CollectedHeap* g1h,
65 G1ParScanThreadState* pss) :
66 G1ScanClosureBase(g1h, pss) { }
67
68 template <class T> void do_oop_work(T* p);
69 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
70 virtual void do_oop(oop* p) { do_oop_work(p); }
71 };
72
73 // Used during the Scan RS phase to scan cards from the remembered set during garbage collection.
74 class G1ScanObjsDuringScanRSClosure : public G1ScanClosureBase {
75 public:
76 G1ScanObjsDuringScanRSClosure(G1CollectedHeap* g1h,
77 G1ParScanThreadState* par_scan_state):
78 G1ScanClosureBase(g1h, par_scan_state) { }
79
80 template <class T> void do_oop_work(T* p);
81 virtual void do_oop(oop* p) { do_oop_work(p); }
82 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
83 };
84
85 // This closure is applied to the fields of the objects that have just been copied during evacuation.
86 class G1ScanEvacuatedObjClosure : public G1ScanClosureBase {
87 bool _scanning_in_young;
88
89 public:
90 G1ScanEvacuatedObjClosure(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state) :
91 G1ScanClosureBase(g1h, par_scan_state), _scanning_in_young(false) { }
92
93 void set_scanning_in_young(bool scanning_in_young) { _scanning_in_young = scanning_in_young; }
94
95 template <class T> void do_oop_work(T* p);
96 virtual void do_oop(oop* p) { do_oop_work(p); }
97 virtual void do_oop(narrowOop* p) { do_oop_work(p); }
98
99 // We need to do reference discovery while processing evacuated objects.
100 virtual ReferenceIterationMode reference_iteration_mode() { return DO_DISCOVERED_AND_DISCOVERY; }
101
102 void set_ref_discoverer(ReferenceDiscoverer* rd) {
103 set_ref_discoverer_internal(rd);
104 }
105 };
106
107 // Add back base class for metadata
108 class G1ParCopyHelper : public OopClosure {
109 protected:
110 G1CollectedHeap* _g1h;
111 G1ParScanThreadState* _par_scan_state;
112 uint _worker_id; // Cache value from par_scan_state.
113 ClassLoaderData* _scanned_cld;
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