117 assert(!CMSCollector::foregroundGCShouldWait(), "Possible deadlock");
118 assert(!ConcurrentMarkSweepThread::cms_thread_has_cms_token(),
119 "Possible deadlock");
120
121 // Release the Heap_lock first.
122 Heap_lock->unlock();
123 if (needs_pll()) {
124 release_and_notify_pending_list_lock();
125 }
126 }
127
128 //////////////////////////////////////////////////////////
129 // Methods in class VM_CMS_Initial_Mark
130 //////////////////////////////////////////////////////////
131 void VM_CMS_Initial_Mark::doit() {
132 if (lost_race()) {
133 // Nothing to do.
134 return;
135 }
136 HS_PRIVATE_CMS_INITMARK_BEGIN();
137 GCIdMark gc_id_mark(_gc_id);
138
139 _collector->_gc_timer_cm->register_gc_pause_start("Initial Mark");
140
141 GenCollectedHeap* gch = GenCollectedHeap::heap();
142 GCCauseSetter gccs(gch, GCCause::_cms_initial_mark);
143
144 VM_CMS_Operation::verify_before_gc();
145
146 IsGCActiveMark x; // stop-world GC active
147 _collector->do_CMS_operation(CMSCollector::CMS_op_checkpointRootsInitial, gch->gc_cause());
148
149 VM_CMS_Operation::verify_after_gc();
150
151 _collector->_gc_timer_cm->register_gc_pause_end();
152
153 HS_PRIVATE_CMS_INITMARK_END();
154 }
155
156 //////////////////////////////////////////////////////////
157 // Methods in class VM_CMS_Final_Remark_Operation
158 //////////////////////////////////////////////////////////
159 void VM_CMS_Final_Remark::doit() {
160 if (lost_race()) {
161 // Nothing to do.
162 return;
163 }
164 HS_PRIVATE_CMS_REMARK_BEGIN();
165 GCIdMark gc_id_mark(_gc_id);
166
167 _collector->_gc_timer_cm->register_gc_pause_start("Final Mark");
168
169 GenCollectedHeap* gch = GenCollectedHeap::heap();
170 GCCauseSetter gccs(gch, GCCause::_cms_final_remark);
171
172 VM_CMS_Operation::verify_before_gc();
173
174 IsGCActiveMark x; // stop-world GC active
175 _collector->do_CMS_operation(CMSCollector::CMS_op_checkpointRootsFinal, gch->gc_cause());
176
177 VM_CMS_Operation::verify_after_gc();
178
179 _collector->save_heap_summary();
180 _collector->_gc_timer_cm->register_gc_pause_end();
181
182 HS_PRIVATE_CMS_REMARK_END();
183 }
184
185 // VM operation to invoke a concurrent collection of a
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117 assert(!CMSCollector::foregroundGCShouldWait(), "Possible deadlock");
118 assert(!ConcurrentMarkSweepThread::cms_thread_has_cms_token(),
119 "Possible deadlock");
120
121 // Release the Heap_lock first.
122 Heap_lock->unlock();
123 if (needs_pll()) {
124 release_and_notify_pending_list_lock();
125 }
126 }
127
128 //////////////////////////////////////////////////////////
129 // Methods in class VM_CMS_Initial_Mark
130 //////////////////////////////////////////////////////////
131 void VM_CMS_Initial_Mark::doit() {
132 if (lost_race()) {
133 // Nothing to do.
134 return;
135 }
136 HS_PRIVATE_CMS_INITMARK_BEGIN();
137
138 _collector->_gc_timer_cm->register_gc_pause_start("Initial Mark");
139
140 GenCollectedHeap* gch = GenCollectedHeap::heap();
141 GCCauseSetter gccs(gch, GCCause::_cms_initial_mark);
142
143 VM_CMS_Operation::verify_before_gc();
144
145 IsGCActiveMark x; // stop-world GC active
146 _collector->do_CMS_operation(CMSCollector::CMS_op_checkpointRootsInitial, gch->gc_cause());
147
148 VM_CMS_Operation::verify_after_gc();
149
150 _collector->_gc_timer_cm->register_gc_pause_end();
151
152 HS_PRIVATE_CMS_INITMARK_END();
153 }
154
155 //////////////////////////////////////////////////////////
156 // Methods in class VM_CMS_Final_Remark_Operation
157 //////////////////////////////////////////////////////////
158 void VM_CMS_Final_Remark::doit() {
159 if (lost_race()) {
160 // Nothing to do.
161 return;
162 }
163 HS_PRIVATE_CMS_REMARK_BEGIN();
164
165 _collector->_gc_timer_cm->register_gc_pause_start("Final Mark");
166
167 GenCollectedHeap* gch = GenCollectedHeap::heap();
168 GCCauseSetter gccs(gch, GCCause::_cms_final_remark);
169
170 VM_CMS_Operation::verify_before_gc();
171
172 IsGCActiveMark x; // stop-world GC active
173 _collector->do_CMS_operation(CMSCollector::CMS_op_checkpointRootsFinal, gch->gc_cause());
174
175 VM_CMS_Operation::verify_after_gc();
176
177 _collector->save_heap_summary();
178 _collector->_gc_timer_cm->register_gc_pause_end();
179
180 HS_PRIVATE_CMS_REMARK_END();
181 }
182
183 // VM operation to invoke a concurrent collection of a
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