11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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.
100 }
101
102 if (closures->trace_metadata()) {
103 {
104 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::WaitForStrongCLD, worker_i);
105 // Barrier to make sure all workers passed
106 // the strong CLD and strong nmethods phases.
107 wait_until_all_strong_classes_discovered();
108 }
109
110 // Now take the complement of the strong CLDs.
111 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::WeakCLDRoots, worker_i);
112 assert(closures->second_pass_weak_clds() != NULL, "Should be non-null if we are tracing metadata.");
113 ClassLoaderDataGraph::roots_cld_do(NULL, closures->second_pass_weak_clds());
114 } else {
115 phase_times->record_time_secs(G1GCPhaseTimes::WaitForStrongCLD, worker_i, 0.0);
116 phase_times->record_time_secs(G1GCPhaseTimes::WeakCLDRoots, worker_i, 0.0);
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
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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/g1CodeBlobClosure.hpp"
32 #include "gc/g1/g1CollectedHeap.inline.hpp"
33 #include "gc/g1/g1CollectorState.hpp"
34 #include "gc/g1/g1GCPhaseTimes.hpp"
35 #include "gc/g1/g1Policy.hpp"
36 #include "gc/g1/g1RootClosures.hpp"
37 #include "gc/g1/g1RootProcessor.hpp"
38 #include "gc/g1/heapRegion.inline.hpp"
39 #include "gc/shared/weakProcessor.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "runtime/mutex.hpp"
42 #include "services/management.hpp"
43 #include "utilities/macros.hpp"
44
45 void G1RootProcessor::worker_has_discovered_all_strong_classes() {
46 assert(ClassUnloadingWithConcurrentMark, "Currently only needed when doing G1 Class Unloading");
47
48 uint new_value = (uint)Atomic::add(1, &_n_workers_discovered_strong_classes);
49 if (new_value == n_workers()) {
50 // This thread is last. Notify the others.
99 }
100
101 if (closures->trace_metadata()) {
102 {
103 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::WaitForStrongCLD, worker_i);
104 // Barrier to make sure all workers passed
105 // the strong CLD and strong nmethods phases.
106 wait_until_all_strong_classes_discovered();
107 }
108
109 // Now take the complement of the strong CLDs.
110 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::WeakCLDRoots, worker_i);
111 assert(closures->second_pass_weak_clds() != NULL, "Should be non-null if we are tracing metadata.");
112 ClassLoaderDataGraph::roots_cld_do(NULL, closures->second_pass_weak_clds());
113 } else {
114 phase_times->record_time_secs(G1GCPhaseTimes::WaitForStrongCLD, worker_i, 0.0);
115 phase_times->record_time_secs(G1GCPhaseTimes::WeakCLDRoots, worker_i, 0.0);
116 assert(closures->second_pass_weak_clds() == NULL, "Should be null if not tracing metadata.");
117 }
118
119 double obj_copy_time_sec = closures->trim_time_seconds();
120
121 phase_times->record_time_secs(G1GCPhaseTimes::ObjCopy, worker_i, obj_copy_time_sec);
122
123 double ext_root_time_sec = os::elapsedTime() - ext_roots_start - obj_copy_time_sec;
124
125 phase_times->record_time_secs(G1GCPhaseTimes::ExtRootScan, worker_i, ext_root_time_sec);
126
127 // During conc marking we have to filter the per-thread SATB buffers
128 // to make sure we remove any oops into the CSet (which will show up
129 // as implicitly live).
130 {
131 G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::SATBFiltering, worker_i);
132 if (!_process_strong_tasks.is_task_claimed(G1RP_PS_filter_satb_buffers) && _g1h->collector_state()->mark_or_rebuild_in_progress()) {
133 JavaThread::satb_mark_queue_set().filter_thread_buffers();
134 }
135 }
136
137 _process_strong_tasks.all_tasks_completed(n_workers());
138 }
139
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