135 }
136 FREE_C_HEAP_ARRAY(G1FullGCMarker*, _markers);
137 FREE_C_HEAP_ARRAY(G1FullGCCompactionPoint*, _compaction_points);
138 }
139
140 void G1FullCollector::prepare_collection() {
141 _heap->policy()->record_full_collection_start();
142
143 _heap->print_heap_before_gc();
144 _heap->print_heap_regions();
145
146 _heap->abort_concurrent_cycle();
147 _heap->verify_before_full_collection(scope()->is_explicit_gc());
148
149 _heap->gc_prologue(true);
150 _heap->prepare_heap_for_full_collection();
151
152 reference_processor()->enable_discovery();
153 reference_processor()->setup_policy(scope()->should_clear_soft_refs());
154
155 // When collecting the permanent generation Method*s may be moving,
156 // so we either have to flush all bcp data or convert it into bci.
157 CodeCache::gc_prologue();
158
159 // We should save the marks of the currently locked biased monitors.
160 // The marking doesn't preserve the marks of biased objects.
161 BiasedLocking::preserve_marks();
162
163 // Clear and activate derived pointer collection.
164 clear_and_activate_derived_pointers();
165 }
166
167 void G1FullCollector::collect() {
168 phase1_mark_live_objects();
169 verify_after_marking();
170
171 // Don't add any more derived pointers during later phases
172 deactivate_derived_pointers();
173
174 phase2_prepare_compaction();
175
176 phase3_adjust_pointers();
177
178 phase4_do_compaction();
179 }
180
181 void G1FullCollector::complete_collection() {
182 // Restore all marks.
183 restore_marks();
184
185 // When the pointers have been adjusted and moved, we can
186 // update the derived pointer table.
187 update_derived_pointers();
188
189 BiasedLocking::restore_marks();
190 CodeCache::gc_epilogue();
191 JvmtiExport::gc_epilogue();
192
193 _heap->prepare_heap_for_mutators();
194
195 _heap->policy()->record_full_collection_end();
196 _heap->gc_epilogue(true);
197
198 _heap->verify_after_full_collection();
199
200 _heap->print_heap_after_full_collection(scope()->heap_transition());
201 }
202
203 void G1FullCollector::phase1_mark_live_objects() {
204 // Recursively traverse all live objects and mark them.
205 GCTraceTime(Info, gc, phases) info("Phase 1: Mark live objects", scope()->timer());
206
207 // Do the actual marking.
208 G1FullGCMarkTask marking_task(this);
209 run_task(&marking_task);
210
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135 }
136 FREE_C_HEAP_ARRAY(G1FullGCMarker*, _markers);
137 FREE_C_HEAP_ARRAY(G1FullGCCompactionPoint*, _compaction_points);
138 }
139
140 void G1FullCollector::prepare_collection() {
141 _heap->policy()->record_full_collection_start();
142
143 _heap->print_heap_before_gc();
144 _heap->print_heap_regions();
145
146 _heap->abort_concurrent_cycle();
147 _heap->verify_before_full_collection(scope()->is_explicit_gc());
148
149 _heap->gc_prologue(true);
150 _heap->prepare_heap_for_full_collection();
151
152 reference_processor()->enable_discovery();
153 reference_processor()->setup_policy(scope()->should_clear_soft_refs());
154
155 // We should save the marks of the currently locked biased monitors.
156 // The marking doesn't preserve the marks of biased objects.
157 BiasedLocking::preserve_marks();
158
159 // Clear and activate derived pointer collection.
160 clear_and_activate_derived_pointers();
161 }
162
163 void G1FullCollector::collect() {
164 phase1_mark_live_objects();
165 verify_after_marking();
166
167 // Don't add any more derived pointers during later phases
168 deactivate_derived_pointers();
169
170 phase2_prepare_compaction();
171
172 phase3_adjust_pointers();
173
174 phase4_do_compaction();
175 }
176
177 void G1FullCollector::complete_collection() {
178 // Restore all marks.
179 restore_marks();
180
181 // When the pointers have been adjusted and moved, we can
182 // update the derived pointer table.
183 update_derived_pointers();
184
185 BiasedLocking::restore_marks();
186 JvmtiExport::gc_epilogue();
187
188 _heap->prepare_heap_for_mutators();
189
190 _heap->policy()->record_full_collection_end();
191 _heap->gc_epilogue(true);
192
193 _heap->verify_after_full_collection();
194
195 _heap->print_heap_after_full_collection(scope()->heap_transition());
196 }
197
198 void G1FullCollector::phase1_mark_live_objects() {
199 // Recursively traverse all live objects and mark them.
200 GCTraceTime(Info, gc, phases) info("Phase 1: Mark live objects", scope()->timer());
201
202 // Do the actual marking.
203 G1FullGCMarkTask marking_task(this);
204 run_task(&marking_task);
205
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