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comparison: src/share/vm/gc_implementation/g1/g1OopClosures.hpp

src/share/vm/gc_implementation/g1/g1OopClosures.hpp

changeset 3175
4dfb2df418f2
parent 3169
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child 3179
811ec3d0833b
equal deleted inserted replaced
3174:f0ecbe78fc7b 3175:4dfb2df418f2
32 class DirtyCardToOopClosure; 32 class DirtyCardToOopClosure;
33 class CMBitMap; 33 class CMBitMap;
34 class CMMarkStack; 34 class CMMarkStack;
35 class G1ParScanThreadState; 35 class G1ParScanThreadState;
36 class CMTask; 36 class CMTask;
37 class ReferenceProcessor;
37 38
38 // A class that scans oops in a given heap region (much as OopsInGenClosure 39 // A class that scans oops in a given heap region (much as OopsInGenClosure
39 // scans oops in a generation.) 40 // scans oops in a generation.)
40 class OopsInHeapRegionClosure: public OopsInGenClosure { 41 class OopsInHeapRegionClosure: public OopsInGenClosure {
41 protected: 42 protected:
57 bool apply_to_weak_ref_discovered_field() { return true; } 58 bool apply_to_weak_ref_discovered_field() { return true; }
58 }; 59 };
59 60
60 class G1ParPushHeapRSClosure : public G1ParClosureSuper { 61 class G1ParPushHeapRSClosure : public G1ParClosureSuper {
61 public: 62 public:
62 G1ParPushHeapRSClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : 63 G1ParPushHeapRSClosure(G1CollectedHeap* g1,
63 G1ParClosureSuper(g1, par_scan_state) { } 64 G1ParScanThreadState* par_scan_state,
65 ReferenceProcessor* rp) :
66 G1ParClosureSuper(g1, par_scan_state)
67 {
68 assert(_ref_processor == NULL, "sanity");
69 _ref_processor = rp;
70 }
71
64 template <class T> void do_oop_nv(T* p); 72 template <class T> void do_oop_nv(T* p);
65 virtual void do_oop(oop* p) { do_oop_nv(p); } 73 virtual void do_oop(oop* p) { do_oop_nv(p); }
66 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } 74 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
67 }; 75 };
68 76
69 class G1ParScanClosure : public G1ParClosureSuper { 77 class G1ParScanClosure : public G1ParClosureSuper {
70 public: 78 public:
71 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : 79 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) :
72 G1ParClosureSuper(g1, par_scan_state) { } 80 G1ParClosureSuper(g1, par_scan_state)
81 {
82 assert(_ref_processor == NULL, "sanity");
83 _ref_processor = rp;
84 }
85
73 template <class T> void do_oop_nv(T* p); 86 template <class T> void do_oop_nv(T* p);
74 virtual void do_oop(oop* p) { do_oop_nv(p); } 87 virtual void do_oop(oop* p) { do_oop_nv(p); }
75 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } 88 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
76 }; 89 };
77 90
90 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); 103 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK);
91 } 104 }
92 105
93 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { 106 class G1ParScanPartialArrayClosure : public G1ParClosureSuper {
94 G1ParScanClosure _scanner; 107 G1ParScanClosure _scanner;
95 public: 108
96 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : 109 public:
97 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state) { } 110 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) :
111 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state, rp)
112 {
113 assert(_ref_processor == NULL, "sanity");
114 }
115
116 G1ParScanClosure* scanner() {
117 return &_scanner;
118 }
119
98 template <class T> void do_oop_nv(T* p); 120 template <class T> void do_oop_nv(T* p);
99 virtual void do_oop(oop* p) { do_oop_nv(p); } 121 virtual void do_oop(oop* p) { do_oop_nv(p); }
100 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } 122 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
101 }; 123 };
102 124
115 137
116 template<bool do_gen_barrier, G1Barrier barrier, 138 template<bool do_gen_barrier, G1Barrier barrier,
117 bool do_mark_object> 139 bool do_mark_object>
118 class G1ParCopyClosure : public G1ParCopyHelper { 140 class G1ParCopyClosure : public G1ParCopyHelper {
119 G1ParScanClosure _scanner; 141 G1ParScanClosure _scanner;
142
120 template <class T> void do_oop_work(T* p); 143 template <class T> void do_oop_work(T* p);
121 public: 144
122 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : 145 public:
123 _scanner(g1, par_scan_state), G1ParCopyHelper(g1, par_scan_state, &_scanner) { } 146 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state,
147 ReferenceProcessor* rp) :
148 _scanner(g1, par_scan_state, rp),
149 G1ParCopyHelper(g1, par_scan_state, &_scanner)
150 {
151 assert(_ref_processor == NULL, "sanity");
152 }
153
154 G1ParScanClosure* scanner() { return &_scanner; }
155
124 template <class T> void do_oop_nv(T* p) { 156 template <class T> void do_oop_nv(T* p) {
125 do_oop_work(p); 157 do_oop_work(p);
126 } 158 }
127 virtual void do_oop(oop* p) { do_oop_nv(p); } 159 virtual void do_oop(oop* p) { do_oop_nv(p); }
128 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } 160 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
129 }; 161 };
130 162
131 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; 163 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure;
132 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; 164 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure;
133 typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; 165
134 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; 166 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
135 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; 167 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure;
136 typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; 168
137 169 // The following closure types are no longer used but are retained
138 // This is the only case when we set skip_cset_test. Basically, this 170 // for historical reasons:
139 // closure is (should?) only be called directly while we're draining 171 // typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure;
140 // the overflow and task queues. In that case we know that the 172 // typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure;
141 // reference in question points into the collection set, otherwise we 173
142 // would not have pushed it on the queue. The following is defined in 174 // The following closure type is defined in g1_specialized_oop_closures.hpp:
143 // g1_specialized_oop_closures.hpp. 175 //
144 // typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure; 176 // typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
145 // We need a separate closure to handle references during evacuation 177
146 // failure processing, as we cannot asume that the reference already 178 // We use a separate closure to handle references during evacuation
147 // points into the collection set (like G1ParScanHeapEvacClosure does). 179 // failure processing.
180 // We could have used another instance of G1ParScanHeapEvacClosure
181 // (since that closure no longer assumes that the references it
182 // handles point into the collection set).
183
148 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; 184 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
149 185
150 class FilterIntoCSClosure: public OopClosure { 186 class FilterIntoCSClosure: public OopClosure {
151 G1CollectedHeap* _g1; 187 G1CollectedHeap* _g1;
152 OopClosure* _oc; 188 OopClosure* _oc;
153 DirtyCardToOopClosure* _dcto_cl; 189 DirtyCardToOopClosure* _dcto_cl;
154 public: 190 public:
155 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, 191 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl,
156 G1CollectedHeap* g1, OopClosure* oc) : 192 G1CollectedHeap* g1,
193 OopClosure* oc,
194 ReferenceProcessor* rp) :
157 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) 195 _dcto_cl(dcto_cl), _g1(g1), _oc(oc)
158 {} 196 {
197 assert(_ref_processor == NULL, "sanity");
198 _ref_processor = rp;
199 }
200
159 template <class T> void do_oop_nv(T* p); 201 template <class T> void do_oop_nv(T* p);
160 virtual void do_oop(oop* p) { do_oop_nv(p); } 202 virtual void do_oop(oop* p) { do_oop_nv(p); }
161 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } 203 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
162 bool apply_to_weak_ref_discovered_field() { return true; } 204 bool apply_to_weak_ref_discovered_field() { return true; }
163 bool do_header() { return false; } 205 bool do_header() { return false; }

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