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comparison src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 6254:a2f7274eb6ef

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7114678: G1: various small fixes, code cleanup, and refactoring Summary: Various cleanups as a prelude to introducing iterators for HeapRegions. Reviewed-by: johnc, brutisso
author tonyp
date Thu, 19 Jul 2012 15:15:54 -0700
parents d2a62e0f25eb
children 27714220e50e
comparison
equal deleted inserted replaced
6253:db823a892a55 6254:a2f7274eb6ef
151 // Returns true if the used portion of "_regions" is properly 151 // Returns true if the used portion of "_regions" is properly
152 // sorted, otherwise asserts false. 152 // sorted, otherwise asserts false.
153 void verify() PRODUCT_RETURN; 153 void verify() PRODUCT_RETURN;
154 }; 154 };
155 155
156 class CSetChooserParUpdater : public StackObj {
157 private:
158 CollectionSetChooser* _chooser;
159 bool _parallel;
160 uint _chunk_size;
161 uint _cur_chunk_idx;
162 uint _cur_chunk_end;
163 uint _regions_added;
164 size_t _reclaimable_bytes_added;
165
166 public:
167 CSetChooserParUpdater(CollectionSetChooser* chooser,
168 bool parallel, uint chunk_size) :
169 _chooser(chooser), _parallel(parallel), _chunk_size(chunk_size),
170 _cur_chunk_idx(0), _cur_chunk_end(0),
171 _regions_added(0), _reclaimable_bytes_added(0) { }
172
173 ~CSetChooserParUpdater() {
174 if (_parallel && _regions_added > 0) {
175 _chooser->update_totals(_regions_added, _reclaimable_bytes_added);
176 }
177 }
178
179 void add_region(HeapRegion* hr) {
180 if (_parallel) {
181 if (_cur_chunk_idx == _cur_chunk_end) {
182 _cur_chunk_idx = _chooser->claim_array_chunk(_chunk_size);
183 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
184 }
185 assert(_cur_chunk_idx < _cur_chunk_end, "invariant");
186 _chooser->set_region(_cur_chunk_idx, hr);
187 _cur_chunk_idx += 1;
188 } else {
189 _chooser->add_region(hr);
190 }
191 _regions_added += 1;
192 _reclaimable_bytes_added += hr->reclaimable_bytes();
193 }
194
195 bool should_add(HeapRegion* hr) { return _chooser->should_add(hr); }
196 };
197
156 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP 198 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
199