124
125 public:
126 InterpreterOopMap();
127 ~InterpreterOopMap();
128
129 // Copy the OopMapCacheEntry in parameter "from" into this
130 // InterpreterOopMap. If the _bit_mask[0] in "from" points to
131 // allocated space (i.e., the bit mask was to large to hold
132 // in-line), allocate the space from a Resource area.
133 void resource_copy(OopMapCacheEntry* from);
134
135 void iterate_oop(OffsetClosure* oop_closure) const;
136 void print() const;
137
138 int number_of_entries() const { return mask_size() / bits_per_entry; }
139 bool is_dead(int offset) const { return (entry_at(offset) & (1 << dead_bit_number)) != 0; }
140 bool is_oop (int offset) const { return (entry_at(offset) & (1 << oop_bit_number )) != 0; }
141
142 int expression_stack_size() const { return _expression_stack_size; }
143
144 #ifdef ENABLE_ZAP_DEAD_LOCALS
145 void iterate_all(OffsetClosure* oop_closure, OffsetClosure* value_closure, OffsetClosure* dead_closure);
146 #endif
147 };
148
149 class OopMapCache : public CHeapObj<mtClass> {
150 private:
151 enum { _size = 32, // Use fixed size for now
152 _probe_depth = 3 // probe depth in case of collisions
153 };
154
155 OopMapCacheEntry* _array;
156
157 unsigned int hash_value_for(methodHandle method, int bci) const;
158 OopMapCacheEntry* entry_at(int i) const;
159
160 mutable Mutex _mut;
161
162 void flush();
163
164 public:
165 OopMapCache();
166 ~OopMapCache(); // free up memory
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124
125 public:
126 InterpreterOopMap();
127 ~InterpreterOopMap();
128
129 // Copy the OopMapCacheEntry in parameter "from" into this
130 // InterpreterOopMap. If the _bit_mask[0] in "from" points to
131 // allocated space (i.e., the bit mask was to large to hold
132 // in-line), allocate the space from a Resource area.
133 void resource_copy(OopMapCacheEntry* from);
134
135 void iterate_oop(OffsetClosure* oop_closure) const;
136 void print() const;
137
138 int number_of_entries() const { return mask_size() / bits_per_entry; }
139 bool is_dead(int offset) const { return (entry_at(offset) & (1 << dead_bit_number)) != 0; }
140 bool is_oop (int offset) const { return (entry_at(offset) & (1 << oop_bit_number )) != 0; }
141
142 int expression_stack_size() const { return _expression_stack_size; }
143
144 };
145
146 class OopMapCache : public CHeapObj<mtClass> {
147 private:
148 enum { _size = 32, // Use fixed size for now
149 _probe_depth = 3 // probe depth in case of collisions
150 };
151
152 OopMapCacheEntry* _array;
153
154 unsigned int hash_value_for(methodHandle method, int bci) const;
155 OopMapCacheEntry* entry_at(int i) const;
156
157 mutable Mutex _mut;
158
159 void flush();
160
161 public:
162 OopMapCache();
163 ~OopMapCache(); // free up memory
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