12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include "aot/aotLoader.hpp"
28 #include "classfile/stringTable.hpp"
29 #include "classfile/systemDictionary.hpp"
30 #include "code/codeCache.hpp"
31 #include "gc/g1/bufferingOopClosure.hpp"
32 #include "gc/g1/g1CodeBlobClosure.hpp"
33 #include "gc/g1/g1CollectedHeap.inline.hpp"
34 #include "gc/g1/g1CollectorState.hpp"
35 #include "gc/g1/g1GCPhaseTimes.hpp"
36 #include "gc/g1/g1Policy.hpp"
37 #include "gc/g1/g1RootClosures.hpp"
38 #include "gc/g1/g1RootProcessor.hpp"
39 #include "gc/g1/heapRegion.inline.hpp"
40 #include "gc/shared/weakProcessor.hpp"
41 #include "memory/allocation.inline.hpp"
42 #include "runtime/mutex.hpp"
43 #include "services/management.hpp"
44 #include "utilities/macros.hpp"
45
46 void G1RootProcessor::worker_has_discovered_all_strong_classes() {
47 assert(ClassUnloadingWithConcurrentMark, "Currently only needed when doing G1 Class Unloading");
48
49 uint new_value = (uint)Atomic::add(1, &_n_workers_discovered_strong_classes);
50 if (new_value == n_workers()) {
51 // This thread is last. Notify the others.
117 assert(closures->second_pass_weak_clds() == NULL, "Should be null if not tracing metadata.");
118 }
119
120 // Finish up any enqueued closure apps (attributed as object copy time).
121 closures->flush();
122
123 double obj_copy_time_sec = closures->closure_app_seconds();
124
125 phase_times->record_time_secs(G1GCPhaseTimes::ObjCopy, worker_i, obj_copy_time_sec);
126
127 double ext_root_time_sec = os::elapsedTime() - ext_roots_start - obj_copy_time_sec;
128
129 phase_times->record_time_secs(G1GCPhaseTimes::ExtRootScan, worker_i, ext_root_time_sec);
130
131 // During conc marking we have to filter the per-thread SATB buffers
132 // to make sure we remove any oops into the CSet (which will show up
133 // as implicitly live).
134 {
135 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::SATBFiltering, worker_i);
136 if (!_process_strong_tasks.is_task_claimed(G1RP_PS_filter_satb_buffers) && _g1h->collector_state()->mark_or_rebuild_in_progress()) {
137 JavaThread::satb_mark_queue_set().filter_thread_buffers();
138 }
139 }
140
141 _process_strong_tasks.all_tasks_completed(n_workers());
142 }
143
144 // Adaptor to pass the closures to the strong roots in the VM.
145 class StrongRootsClosures : public G1RootClosures {
146 OopClosure* _roots;
147 CLDClosure* _clds;
148 CodeBlobClosure* _blobs;
149 public:
150 StrongRootsClosures(OopClosure* roots, CLDClosure* clds, CodeBlobClosure* blobs) :
151 _roots(roots), _clds(clds), _blobs(blobs) {}
152
153 OopClosure* weak_oops() { return NULL; }
154 OopClosure* strong_oops() { return _roots; }
155
156 CLDClosure* weak_clds() { return NULL; }
157 CLDClosure* strong_clds() { return _clds; }
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include "aot/aotLoader.hpp"
28 #include "classfile/stringTable.hpp"
29 #include "classfile/systemDictionary.hpp"
30 #include "code/codeCache.hpp"
31 #include "gc/g1/bufferingOopClosure.hpp"
32 #include "gc/g1/g1BarrierSet.hpp"
33 #include "gc/g1/g1CodeBlobClosure.hpp"
34 #include "gc/g1/g1CollectedHeap.inline.hpp"
35 #include "gc/g1/g1CollectorState.hpp"
36 #include "gc/g1/g1GCPhaseTimes.hpp"
37 #include "gc/g1/g1Policy.hpp"
38 #include "gc/g1/g1RootClosures.hpp"
39 #include "gc/g1/g1RootProcessor.hpp"
40 #include "gc/g1/heapRegion.inline.hpp"
41 #include "gc/shared/weakProcessor.hpp"
42 #include "memory/allocation.inline.hpp"
43 #include "runtime/mutex.hpp"
44 #include "services/management.hpp"
45 #include "utilities/macros.hpp"
46
47 void G1RootProcessor::worker_has_discovered_all_strong_classes() {
48 assert(ClassUnloadingWithConcurrentMark, "Currently only needed when doing G1 Class Unloading");
49
50 uint new_value = (uint)Atomic::add(1, &_n_workers_discovered_strong_classes);
51 if (new_value == n_workers()) {
52 // This thread is last. Notify the others.
118 assert(closures->second_pass_weak_clds() == NULL, "Should be null if not tracing metadata.");
119 }
120
121 // Finish up any enqueued closure apps (attributed as object copy time).
122 closures->flush();
123
124 double obj_copy_time_sec = closures->closure_app_seconds();
125
126 phase_times->record_time_secs(G1GCPhaseTimes::ObjCopy, worker_i, obj_copy_time_sec);
127
128 double ext_root_time_sec = os::elapsedTime() - ext_roots_start - obj_copy_time_sec;
129
130 phase_times->record_time_secs(G1GCPhaseTimes::ExtRootScan, worker_i, ext_root_time_sec);
131
132 // During conc marking we have to filter the per-thread SATB buffers
133 // to make sure we remove any oops into the CSet (which will show up
134 // as implicitly live).
135 {
136 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::SATBFiltering, worker_i);
137 if (!_process_strong_tasks.is_task_claimed(G1RP_PS_filter_satb_buffers) && _g1h->collector_state()->mark_or_rebuild_in_progress()) {
138 G1BarrierSet::satb_mark_queue_set().filter_thread_buffers();
139 }
140 }
141
142 _process_strong_tasks.all_tasks_completed(n_workers());
143 }
144
145 // Adaptor to pass the closures to the strong roots in the VM.
146 class StrongRootsClosures : public G1RootClosures {
147 OopClosure* _roots;
148 CLDClosure* _clds;
149 CodeBlobClosure* _blobs;
150 public:
151 StrongRootsClosures(OopClosure* roots, CLDClosure* clds, CodeBlobClosure* blobs) :
152 _roots(roots), _clds(clds), _blobs(blobs) {}
153
154 OopClosure* weak_oops() { return NULL; }
155 OopClosure* strong_oops() { return _roots; }
156
157 CLDClosure* weak_clds() { return NULL; }
158 CLDClosure* strong_clds() { return _clds; }
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