128 // not included.
129 void younger_refs_in_space_iterate(Space* sp, OopsInGenClosure* cl);
130
131 public:
132 // The set of possible generation kinds.
133 enum Name {
134 ASParNew,
135 ASConcurrentMarkSweep,
136 DefNew,
137 ParNew,
138 MarkSweepCompact,
139 ConcurrentMarkSweep,
140 Other
141 };
142
143 enum SomePublicConstants {
144 // Generations are GenGrain-aligned and have size that are multiples of
145 // GenGrain.
146 // Note: on ARM we add 1 bit for card_table_base to be properly aligned
147 // (we expect its low byte to be zero - see implementation of post_barrier)
148 LogOfGenGrain = 16 ARM_ONLY(+1),
149 GenGrain = 1 << LogOfGenGrain
150 };
151
152 // allocate and initialize ("weak") refs processing support
153 virtual void ref_processor_init();
154 void set_ref_processor(ReferenceProcessor* rp) {
155 assert(_ref_processor == NULL, "clobbering existing _ref_processor");
156 _ref_processor = rp;
157 }
158
159 virtual Generation::Name kind() { return Generation::Other; }
160 GenerationSpec* spec();
161
162 // This properly belongs in the collector, but for now this
163 // will do.
164 virtual bool refs_discovery_is_atomic() const { return true; }
165 virtual bool refs_discovery_is_mt() const { return false; }
166
167 // Space enquiries (results in bytes)
168 virtual size_t capacity() const = 0; // The maximum number of object bytes the
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128 // not included.
129 void younger_refs_in_space_iterate(Space* sp, OopsInGenClosure* cl);
130
131 public:
132 // The set of possible generation kinds.
133 enum Name {
134 ASParNew,
135 ASConcurrentMarkSweep,
136 DefNew,
137 ParNew,
138 MarkSweepCompact,
139 ConcurrentMarkSweep,
140 Other
141 };
142
143 enum SomePublicConstants {
144 // Generations are GenGrain-aligned and have size that are multiples of
145 // GenGrain.
146 // Note: on ARM we add 1 bit for card_table_base to be properly aligned
147 // (we expect its low byte to be zero - see implementation of post_barrier)
148 LogOfGenGrain = 16 ARM32_ONLY(+1),
149 GenGrain = 1 << LogOfGenGrain
150 };
151
152 // allocate and initialize ("weak") refs processing support
153 virtual void ref_processor_init();
154 void set_ref_processor(ReferenceProcessor* rp) {
155 assert(_ref_processor == NULL, "clobbering existing _ref_processor");
156 _ref_processor = rp;
157 }
158
159 virtual Generation::Name kind() { return Generation::Other; }
160 GenerationSpec* spec();
161
162 // This properly belongs in the collector, but for now this
163 // will do.
164 virtual bool refs_discovery_is_atomic() const { return true; }
165 virtual bool refs_discovery_is_mt() const { return false; }
166
167 // Space enquiries (results in bytes)
168 virtual size_t capacity() const = 0; // The maximum number of object bytes the
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