189 HandleMark hm; // handle scope
190 COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact);
191 gclog_or_tty->print(" VerifyDuringGC:(full)[Verifying ");
192 Universe::heap()->prepare_for_verify();
193 // Note: we can verify only the heap here. When an object is
194 // marked, the previous value of the mark word (including
195 // identity hash values, ages, etc) is preserved, and the mark
196 // word is set to markOop::marked_value - effectively removing
197 // any hash values from the mark word. These hash values are
198 // used when verifying the dictionaries and so removing them
199 // from the mark word can make verification of the dictionaries
200 // fail. At the end of the GC, the orginal mark word values
201 // (including hash values) are restored to the appropriate
202 // objects.
203 Universe::heap()->verify(/* silent */ false,
204 /* option */ VerifyOption_G1UseMarkWord);
205
206 G1CollectedHeap* g1h = G1CollectedHeap::heap();
207 gclog_or_tty->print_cr("]");
208 }
209 }
210
211 class G1PrepareCompactClosure: public HeapRegionClosure {
212 G1CollectedHeap* _g1h;
213 ModRefBarrierSet* _mrbs;
214 CompactPoint _cp;
215 HumongousRegionSet _humongous_proxy_set;
216
217 void free_humongous_region(HeapRegion* hr) {
218 HeapWord* end = hr->end();
219 size_t dummy_pre_used;
220 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
221
222 assert(hr->startsHumongous(),
223 "Only the start of a humongous region should be freed.");
224 _g1h->free_humongous_region(hr, &dummy_pre_used, &dummy_free_list,
225 &_humongous_proxy_set, false /* par */);
226 hr->prepare_for_compaction(&_cp);
227 // Also clear the part of the card table that will be unused after
228 // compaction.
|
189 HandleMark hm; // handle scope
190 COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact);
191 gclog_or_tty->print(" VerifyDuringGC:(full)[Verifying ");
192 Universe::heap()->prepare_for_verify();
193 // Note: we can verify only the heap here. When an object is
194 // marked, the previous value of the mark word (including
195 // identity hash values, ages, etc) is preserved, and the mark
196 // word is set to markOop::marked_value - effectively removing
197 // any hash values from the mark word. These hash values are
198 // used when verifying the dictionaries and so removing them
199 // from the mark word can make verification of the dictionaries
200 // fail. At the end of the GC, the orginal mark word values
201 // (including hash values) are restored to the appropriate
202 // objects.
203 Universe::heap()->verify(/* silent */ false,
204 /* option */ VerifyOption_G1UseMarkWord);
205
206 G1CollectedHeap* g1h = G1CollectedHeap::heap();
207 gclog_or_tty->print_cr("]");
208 }
209
210 gc_tracer()->report_object_count_after_gc(&GenMarkSweep::is_alive);
211 }
212
213 class G1PrepareCompactClosure: public HeapRegionClosure {
214 G1CollectedHeap* _g1h;
215 ModRefBarrierSet* _mrbs;
216 CompactPoint _cp;
217 HumongousRegionSet _humongous_proxy_set;
218
219 void free_humongous_region(HeapRegion* hr) {
220 HeapWord* end = hr->end();
221 size_t dummy_pre_used;
222 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
223
224 assert(hr->startsHumongous(),
225 "Only the start of a humongous region should be freed.");
226 _g1h->free_humongous_region(hr, &dummy_pre_used, &dummy_free_list,
227 &_humongous_proxy_set, false /* par */);
228 hr->prepare_for_compaction(&_cp);
229 // Also clear the part of the card table that will be unused after
230 // compaction.
|