231 };
232
233 void G1RemSet::scanRS(G1ParPushHeapRSClosure* oc,
234 CodeBlobClosure* code_root_cl,
235 uint worker_i) {
236 double rs_time_start = os::elapsedTime();
237 HeapRegion *startRegion = _g1->start_cset_region_for_worker(worker_i);
238
239 ScanRSClosure scanRScl(oc, code_root_cl, worker_i);
240
241 _g1->collection_set_iterate_from(startRegion, &scanRScl);
242 scanRScl.set_try_claimed();
243 _g1->collection_set_iterate_from(startRegion, &scanRScl);
244
245 double scan_rs_time_sec = (os::elapsedTime() - rs_time_start)
246 - scanRScl.strong_code_root_scan_time_sec();
247
248 assert(_cards_scanned != NULL, "invariant");
249 _cards_scanned[worker_i] = scanRScl.cards_done();
250
251 _g1p->phase_times()->record_time(G1GCPhaseTimes::ScanRS, worker_i, scan_rs_time_sec);
252 _g1p->phase_times()->record_time(G1GCPhaseTimes::CodeRoots, worker_i, scanRScl.strong_code_root_scan_time_sec());
253 }
254
255 // Closure used for updating RSets and recording references that
256 // point into the collection set. Only called during an
257 // evacuation pause.
258
259 class RefineRecordRefsIntoCSCardTableEntryClosure: public CardTableEntryClosure {
260 G1RemSet* _g1rs;
261 DirtyCardQueue* _into_cset_dcq;
262 public:
263 RefineRecordRefsIntoCSCardTableEntryClosure(G1CollectedHeap* g1h,
264 DirtyCardQueue* into_cset_dcq) :
265 _g1rs(g1h->g1_rem_set()), _into_cset_dcq(into_cset_dcq)
266 {}
267 bool do_card_ptr(jbyte* card_ptr, uint worker_i) {
268 // The only time we care about recording cards that
269 // contain references that point into the collection set
270 // is during RSet updating within an evacuation pause.
271 // In this case worker_i should be the id of a GC worker thread.
272 assert(SafepointSynchronize::is_at_safepoint(), "not during an evacuation pause");
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231 };
232
233 void G1RemSet::scanRS(G1ParPushHeapRSClosure* oc,
234 CodeBlobClosure* code_root_cl,
235 uint worker_i) {
236 double rs_time_start = os::elapsedTime();
237 HeapRegion *startRegion = _g1->start_cset_region_for_worker(worker_i);
238
239 ScanRSClosure scanRScl(oc, code_root_cl, worker_i);
240
241 _g1->collection_set_iterate_from(startRegion, &scanRScl);
242 scanRScl.set_try_claimed();
243 _g1->collection_set_iterate_from(startRegion, &scanRScl);
244
245 double scan_rs_time_sec = (os::elapsedTime() - rs_time_start)
246 - scanRScl.strong_code_root_scan_time_sec();
247
248 assert(_cards_scanned != NULL, "invariant");
249 _cards_scanned[worker_i] = scanRScl.cards_done();
250
251 _g1p->phase_times()->record_time_secs(G1GCPhaseTimes::ScanRS, worker_i, scan_rs_time_sec);
252 _g1p->phase_times()->record_time_secs(G1GCPhaseTimes::CodeRoots, worker_i, scanRScl.strong_code_root_scan_time_sec());
253 }
254
255 // Closure used for updating RSets and recording references that
256 // point into the collection set. Only called during an
257 // evacuation pause.
258
259 class RefineRecordRefsIntoCSCardTableEntryClosure: public CardTableEntryClosure {
260 G1RemSet* _g1rs;
261 DirtyCardQueue* _into_cset_dcq;
262 public:
263 RefineRecordRefsIntoCSCardTableEntryClosure(G1CollectedHeap* g1h,
264 DirtyCardQueue* into_cset_dcq) :
265 _g1rs(g1h->g1_rem_set()), _into_cset_dcq(into_cset_dcq)
266 {}
267 bool do_card_ptr(jbyte* card_ptr, uint worker_i) {
268 // The only time we care about recording cards that
269 // contain references that point into the collection set
270 // is during RSet updating within an evacuation pause.
271 // In this case worker_i should be the id of a GC worker thread.
272 assert(SafepointSynchronize::is_at_safepoint(), "not during an evacuation pause");
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