77 set_generation(gen);
78 }
79
80 HeapWord* gen_boundary() { return _gen_boundary; }
81
82 };
83
84 // Super class for scan closures. It contains code to dirty scanned class loader data.
85 class OopsInClassLoaderDataOrGenClosure: public OopsInGenClosure {
86 ClassLoaderData* _scanned_cld;
87 public:
88 OopsInClassLoaderDataOrGenClosure(Generation* g) : OopsInGenClosure(g), _scanned_cld(NULL) {}
89 void set_scanned_cld(ClassLoaderData* cld) {
90 assert(cld == NULL || _scanned_cld == NULL, "Must be");
91 _scanned_cld = cld;
92 }
93 bool is_scanning_a_cld() { return _scanned_cld != NULL; }
94 void do_cld_barrier();
95 };
96
97
98 // Closure for scanning DefNewGeneration.
99 //
100 // This closure will perform barrier store calls for ALL
101 // pointers in scanned oops.
102 class ScanClosure: public OopsInClassLoaderDataOrGenClosure {
103 protected:
104 DefNewGeneration* _g;
105 HeapWord* _boundary;
106 bool _gc_barrier;
107 template <class T> inline void do_oop_work(T* p);
108 public:
109 ScanClosure(DefNewGeneration* g, bool gc_barrier);
110 virtual void do_oop(oop* p);
111 virtual void do_oop(narrowOop* p);
112 inline void do_oop_nv(oop* p);
113 inline void do_oop_nv(narrowOop* p);
114 };
115
116 // Closure for scanning DefNewGeneration.
117 //
118 // This closure only performs barrier store calls on
119 // pointers into the DefNewGeneration. This is less
120 // precise, but faster, than a ScanClosure
121 class FastScanClosure: public OopsInClassLoaderDataOrGenClosure {
122 protected:
123 DefNewGeneration* _g;
124 HeapWord* _boundary;
125 bool _gc_barrier;
126 template <class T> inline void do_oop_work(T* p);
127 public:
128 FastScanClosure(DefNewGeneration* g, bool gc_barrier);
129 virtual void do_oop(oop* p);
130 virtual void do_oop(narrowOop* p);
131 inline void do_oop_nv(oop* p);
132 inline void do_oop_nv(narrowOop* p);
133 };
134
135 class CLDScanClosure: public CLDClosure {
136 OopsInClassLoaderDataOrGenClosure* _scavenge_closure;
137 // true if the the modified oops state should be saved.
138 bool _accumulate_modified_oops;
139 public:
140 CLDScanClosure(OopsInClassLoaderDataOrGenClosure* scavenge_closure,
141 bool accumulate_modified_oops) :
142 _scavenge_closure(scavenge_closure), _accumulate_modified_oops(accumulate_modified_oops) {}
143 void do_cld(ClassLoaderData* cld);
144 };
145
146 class FilteringClosure: public ExtendedOopClosure {
147 private:
148 HeapWord* _boundary;
149 ExtendedOopClosure* _cl;
150 protected:
151 template <class T> inline void do_oop_work(T* p);
152 public:
153 FilteringClosure(HeapWord* boundary, ExtendedOopClosure* cl) :
154 ExtendedOopClosure(cl->ref_discoverer()), _boundary(boundary),
155 _cl(cl) {}
156 virtual void do_oop(oop* p);
157 virtual void do_oop(narrowOop* p);
158 inline void do_oop_nv(oop* p);
159 inline void do_oop_nv(narrowOop* p);
160 virtual bool do_metadata() { return do_metadata_nv(); }
161 inline bool do_metadata_nv() { assert(!_cl->do_metadata(), "assumption broken, must change to 'return _cl->do_metadata()'"); return false; }
162 };
163
164 // Closure for scanning DefNewGeneration's weak references.
165 // NOTE: very much like ScanClosure but not derived from
166 // OopsInGenClosure -- weak references are processed all
167 // at once, with no notion of which generation they were in.
168 class ScanWeakRefClosure: public OopClosure {
169 protected:
170 DefNewGeneration* _g;
171 HeapWord* _boundary;
172 template <class T> inline void do_oop_work(T* p);
173 public:
174 ScanWeakRefClosure(DefNewGeneration* g);
175 virtual void do_oop(oop* p);
176 virtual void do_oop(narrowOop* p);
177 inline void do_oop_nv(oop* p);
178 inline void do_oop_nv(narrowOop* p);
179 };
180
181 #endif // SHARE_VM_GC_SHARED_GENOOPCLOSURES_HPP
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77 set_generation(gen);
78 }
79
80 HeapWord* gen_boundary() { return _gen_boundary; }
81
82 };
83
84 // Super class for scan closures. It contains code to dirty scanned class loader data.
85 class OopsInClassLoaderDataOrGenClosure: public OopsInGenClosure {
86 ClassLoaderData* _scanned_cld;
87 public:
88 OopsInClassLoaderDataOrGenClosure(Generation* g) : OopsInGenClosure(g), _scanned_cld(NULL) {}
89 void set_scanned_cld(ClassLoaderData* cld) {
90 assert(cld == NULL || _scanned_cld == NULL, "Must be");
91 _scanned_cld = cld;
92 }
93 bool is_scanning_a_cld() { return _scanned_cld != NULL; }
94 void do_cld_barrier();
95 };
96
97 #if INCLUDE_SERIALGC
98
99 // Closure for scanning DefNewGeneration.
100 //
101 // This closure will perform barrier store calls for ALL
102 // pointers in scanned oops.
103 class ScanClosure: public OopsInClassLoaderDataOrGenClosure {
104 protected:
105 DefNewGeneration* _g;
106 HeapWord* _boundary;
107 bool _gc_barrier;
108 template <class T> inline void do_oop_work(T* p);
109 public:
110 ScanClosure(DefNewGeneration* g, bool gc_barrier);
111 virtual void do_oop(oop* p);
112 virtual void do_oop(narrowOop* p);
113 inline void do_oop_nv(oop* p);
114 inline void do_oop_nv(narrowOop* p);
115 };
116
117 // Closure for scanning DefNewGeneration.
118 //
119 // This closure only performs barrier store calls on
120 // pointers into the DefNewGeneration. This is less
121 // precise, but faster, than a ScanClosure
122 class FastScanClosure: public OopsInClassLoaderDataOrGenClosure {
123 protected:
124 DefNewGeneration* _g;
125 HeapWord* _boundary;
126 bool _gc_barrier;
127 template <class T> inline void do_oop_work(T* p);
128 public:
129 FastScanClosure(DefNewGeneration* g, bool gc_barrier);
130 virtual void do_oop(oop* p);
131 virtual void do_oop(narrowOop* p);
132 inline void do_oop_nv(oop* p);
133 inline void do_oop_nv(narrowOop* p);
134 };
135
136 #endif // INCLUDE_SERIALGC
137
138 class CLDScanClosure: public CLDClosure {
139 OopsInClassLoaderDataOrGenClosure* _scavenge_closure;
140 // true if the the modified oops state should be saved.
141 bool _accumulate_modified_oops;
142 public:
143 CLDScanClosure(OopsInClassLoaderDataOrGenClosure* scavenge_closure,
144 bool accumulate_modified_oops) :
145 _scavenge_closure(scavenge_closure), _accumulate_modified_oops(accumulate_modified_oops) {}
146 void do_cld(ClassLoaderData* cld);
147 };
148
149 class FilteringClosure: public ExtendedOopClosure {
150 private:
151 HeapWord* _boundary;
152 ExtendedOopClosure* _cl;
153 protected:
154 template <class T> inline void do_oop_work(T* p);
155 public:
156 FilteringClosure(HeapWord* boundary, ExtendedOopClosure* cl) :
157 ExtendedOopClosure(cl->ref_discoverer()), _boundary(boundary),
158 _cl(cl) {}
159 virtual void do_oop(oop* p);
160 virtual void do_oop(narrowOop* p);
161 inline void do_oop_nv(oop* p);
162 inline void do_oop_nv(narrowOop* p);
163 virtual bool do_metadata() { return do_metadata_nv(); }
164 inline bool do_metadata_nv() { assert(!_cl->do_metadata(), "assumption broken, must change to 'return _cl->do_metadata()'"); return false; }
165 };
166
167 #if INCLUDE_SERIALGC
168
169 // Closure for scanning DefNewGeneration's weak references.
170 // NOTE: very much like ScanClosure but not derived from
171 // OopsInGenClosure -- weak references are processed all
172 // at once, with no notion of which generation they were in.
173 class ScanWeakRefClosure: public OopClosure {
174 protected:
175 DefNewGeneration* _g;
176 HeapWord* _boundary;
177 template <class T> inline void do_oop_work(T* p);
178 public:
179 ScanWeakRefClosure(DefNewGeneration* g);
180 virtual void do_oop(oop* p);
181 virtual void do_oop(narrowOop* p);
182 inline void do_oop_nv(oop* p);
183 inline void do_oop_nv(narrowOop* p);
184 };
185
186 #endif // INCLUDE_SERIALGC
187
188 #endif // SHARE_VM_GC_SHARED_GENOOPCLOSURES_HPP
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