261 uint young_region_length() const { return eden_region_length() +
262 survivor_region_length(); }
263
264 uint eden_region_length() const { return _eden_region_length; }
265 uint survivor_region_length() const { return _survivor_region_length; }
266 uint old_region_length() const { return _old_region_length; }
267 uint optional_region_length() const { return _num_optional_regions; }
268
269 // Reset the contents of the collection set.
270 void clear();
271
272 // Incremental collection set support
273
274 // Initialize incremental collection set info.
275 void start_incremental_building();
276 // Start a new collection set increment.
277 void update_incremental_marker() { _inc_build_state = Active; _inc_part_start = _collection_set_cur_length; }
278 // Stop adding regions to the current collection set increment.
279 void stop_incremental_building() { _inc_build_state = Inactive; }
280
281 // Iterate over the current collection set increment applying the given HeapRegionClosure
282 // from a starting position determined by the given worker id.
283 void iterate_incremental_part_from(HeapRegionClosure* cl, HeapRegionClaimer* hr_claimer, uint worker_id, uint total_workers) const;
284
285 // Returns the length of the current increment in number of regions.
286 size_t increment_length() const { return _collection_set_cur_length - _inc_part_start; }
287 // Returns the length of the whole current collection set in number of regions
288 size_t cur_length() const { return _collection_set_cur_length; }
289
290 // Iterate over the entire collection set (all increments calculated so far), applying
291 // the given HeapRegionClosure on all of them.
292 void iterate(HeapRegionClosure* cl) const;
293
294 void iterate_optional(HeapRegionClosure* cl) const;
295
296 size_t recorded_rs_length() { return _recorded_rs_length; }
297
298 size_t bytes_used_before() const {
299 return _bytes_used_before;
300 }
301
302 void reset_bytes_used_before() {
303 _bytes_used_before = 0;
304 }
305
306 // Finalize the initial collection set consisting of all young regions potentially a
307 // few old gen regions.
308 void finalize_initial_collection_set(double target_pause_time_ms, G1SurvivorRegions* survivor);
309 // Finalize the next collection set from the set of available optional old gen regions.
310 bool finalize_optional_for_evacuation(double remaining_pause_time);
311 // Abandon (clean up) optional collection set regions that were not evacuated in this
312 // pause.
|
261 uint young_region_length() const { return eden_region_length() +
262 survivor_region_length(); }
263
264 uint eden_region_length() const { return _eden_region_length; }
265 uint survivor_region_length() const { return _survivor_region_length; }
266 uint old_region_length() const { return _old_region_length; }
267 uint optional_region_length() const { return _num_optional_regions; }
268
269 // Reset the contents of the collection set.
270 void clear();
271
272 // Incremental collection set support
273
274 // Initialize incremental collection set info.
275 void start_incremental_building();
276 // Start a new collection set increment.
277 void update_incremental_marker() { _inc_build_state = Active; _inc_part_start = _collection_set_cur_length; }
278 // Stop adding regions to the current collection set increment.
279 void stop_incremental_building() { _inc_build_state = Inactive; }
280
281 // Iterate the part of the collection set given by the offset and length applying the given
282 // HeapRegionClosure. The worker_id will determine where in the part to start the iteration
283 // to allow for more efficient parallel iteration.
284 void iterate_part_from(HeapRegionClosure* cl,
285 HeapRegionClaimer* hr_claimer,
286 size_t offset,
287 size_t lenght,
288 uint worker_id,
289 uint total_workers) const;
290
291 // Iterate over the current collection set increment applying the given HeapRegionClosure
292 // from a starting position determined by the given worker id.
293 void iterate_incremental_part_from(HeapRegionClosure* cl, HeapRegionClaimer* hr_claimer, uint worker_id, uint total_workers) const;
294
295 // Returns the length of the current increment in number of regions.
296 size_t increment_length() const { return _collection_set_cur_length - _inc_part_start; }
297 // Returns the length of the whole current collection set in number of regions
298 size_t cur_length() const { return _collection_set_cur_length; }
299
300 // Iterate over the entire collection set (all increments calculated so far), applying
301 // the given HeapRegionClosure on all of them.
302 void iterate(HeapRegionClosure* cl) const;
303 void par_iterate(HeapRegionClosure* cl,
304 HeapRegionClaimer* hr_claimer,
305 uint worker_id,
306 uint total_workers) const;
307
308 void iterate_optional(HeapRegionClosure* cl) const;
309
310 size_t recorded_rs_length() { return _recorded_rs_length; }
311
312 size_t bytes_used_before() const {
313 return _bytes_used_before;
314 }
315
316 void reset_bytes_used_before() {
317 _bytes_used_before = 0;
318 }
319
320 // Finalize the initial collection set consisting of all young regions potentially a
321 // few old gen regions.
322 void finalize_initial_collection_set(double target_pause_time_ms, G1SurvivorRegions* survivor);
323 // Finalize the next collection set from the set of available optional old gen regions.
324 bool finalize_optional_for_evacuation(double remaining_pause_time);
325 // Abandon (clean up) optional collection set regions that were not evacuated in this
326 // pause.
|