15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #include "gc/shared/gcTraceTime.inline.hpp"
25 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
26 #include "gc/shenandoah/shenandoahMarkCompact.hpp"
27 #include "gc/shenandoah/shenandoahConcurrentMark.inline.hpp"
28 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
29 #include "gc/shenandoah/shenandoahWorkGroup.hpp"
30 #include "gc/shenandoah/vm_operations_shenandoah.hpp"
31
32 void VM_ShenandoahInitMark::doit() {
33 GCIdMark gc_id_mark(_gc_id);
34 ShenandoahHeap *sh = (ShenandoahHeap*) Universe::heap();
35 WorkGang* workers = sh->workers();
36
37 // Calculate workers for initial marking
38 uint nworkers = ShenandoahCollectorPolicy::calc_workers_for_init_marking(
39 workers->active_workers(), Threads::number_of_non_daemon_threads());
40
41 ShenandoahWorkerScope scope(workers, nworkers);
42
43 GCTraceTime(Info, gc) time("Pause Init Mark", sh->gc_timer());
44 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::total_pause);
45 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::init_mark);
46
47 assert(sh->is_next_bitmap_clear(), "need clear marking bitmap");
48
49 sh->start_concurrent_marking();
50 if (UseTLAB) {
51 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::resize_tlabs);
52 sh->resize_all_tlabs();
53 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::resize_tlabs);
54 }
55
56 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::init_mark);
57 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::total_pause);
58
59 }
60
61 void VM_ShenandoahFullGC::doit() {
71
72 bool VM_ShenandoahReferenceOperation::doit_prologue() {
73 Heap_lock->lock();
74 return true;
75 }
76
77 void VM_ShenandoahReferenceOperation::doit_epilogue() {
78 if (Universe::has_reference_pending_list()) {
79 Heap_lock->notify_all();
80 }
81 Heap_lock->unlock();
82 }
83
84 void VM_ShenandoahStartEvacuation::doit() {
85 GCIdMark gc_id_mark(_gc_id);
86
87 // It is critical that we
88 // evacuate roots right after finishing marking, so that we don't
89 // get unmarked objects in the roots.
90 ShenandoahHeap *sh = ShenandoahHeap::heap();
91 // Setup workers for final marking
92 WorkGang* workers = sh->workers();
93 uint n_workers = ShenandoahCollectorPolicy::calc_workers_for_final_marking(workers->active_workers(),
94 Threads::number_of_non_daemon_threads());
95 ShenandoahWorkerScope scope(workers, n_workers);
96
97 if (! sh->cancelled_concgc()) {
98 GCTraceTime(Info, gc) time("Pause Final Mark", sh->gc_timer(), GCCause::_no_gc, true);
99 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::total_pause);
100 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::final_mark);
101 sh->concurrentMark()->finish_mark_from_roots();
102 sh->stop_concurrent_marking();
103 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::final_mark);
104 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::total_pause);
105
106 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::prepare_evac);
107 sh->prepare_for_concurrent_evacuation();
108 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::prepare_evac);
109
110 sh->set_evacuation_in_progress_at_safepoint(true);
111
112 // From here on, we need to update references.
113 sh->set_need_update_refs(true);
114
115 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::init_evac);
116 sh->evacuate_and_update_roots();
117 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::init_evac);
118
119 } else {
120 GCTraceTime(Info, gc) time("Cancel Concurrent Mark", sh->gc_timer(), GCCause::_no_gc, true);
121 sh->concurrentMark()->cancel();
122 sh->stop_concurrent_marking();
123 }
124 }
125
126 void VM_ShenandoahVerifyHeapAfterEvacuation::doit() {
127 GCIdMark gc_id_mark(_gc_id);
128 ShenandoahHeap *sh = ShenandoahHeap::heap();
129 sh->verify_heap_after_evacuation();
130 }
|
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #include "gc/shared/gcTraceTime.inline.hpp"
25 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
26 #include "gc/shenandoah/shenandoahMarkCompact.hpp"
27 #include "gc/shenandoah/shenandoahConcurrentMark.inline.hpp"
28 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
29 #include "gc/shenandoah/shenandoahWorkGroup.hpp"
30 #include "gc/shenandoah/vm_operations_shenandoah.hpp"
31
32 void VM_ShenandoahInitMark::doit() {
33 GCIdMark gc_id_mark(_gc_id);
34 ShenandoahHeap *sh = (ShenandoahHeap*) Universe::heap();
35 ShenandoahWorkGang* workers = sh->workers();
36
37 // Calculate workers for initial marking
38 uint nworkers = ShenandoahCollectorPolicy::calc_workers_for_init_marking(
39 workers->active_workers(), Threads::number_of_non_daemon_threads());
40
41 ShenandoahWorkerSessionScope scope(workers, nworkers, ShenandoahWorkerSessionScope::Parallel);
42
43 GCTraceTime(Info, gc) time("Pause Init Mark", sh->gc_timer());
44 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::total_pause);
45 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::init_mark);
46
47 assert(sh->is_next_bitmap_clear(), "need clear marking bitmap");
48
49 sh->start_concurrent_marking();
50 if (UseTLAB) {
51 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::resize_tlabs);
52 sh->resize_all_tlabs();
53 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::resize_tlabs);
54 }
55
56 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::init_mark);
57 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::total_pause);
58
59 }
60
61 void VM_ShenandoahFullGC::doit() {
71
72 bool VM_ShenandoahReferenceOperation::doit_prologue() {
73 Heap_lock->lock();
74 return true;
75 }
76
77 void VM_ShenandoahReferenceOperation::doit_epilogue() {
78 if (Universe::has_reference_pending_list()) {
79 Heap_lock->notify_all();
80 }
81 Heap_lock->unlock();
82 }
83
84 void VM_ShenandoahStartEvacuation::doit() {
85 GCIdMark gc_id_mark(_gc_id);
86
87 // It is critical that we
88 // evacuate roots right after finishing marking, so that we don't
89 // get unmarked objects in the roots.
90 ShenandoahHeap *sh = ShenandoahHeap::heap();
91
92 if (! sh->cancelled_concgc()) {
93 // Setup workers for final marking
94 ShenandoahWorkGang* workers = sh->workers();
95 uint n_workers = ShenandoahCollectorPolicy::calc_workers_for_final_marking(workers->active_workers(),
96 Threads::number_of_non_daemon_threads());
97 ShenandoahWorkerSessionScope scope(workers, n_workers, ShenandoahWorkerSessionScope::Parallel);
98
99 GCTraceTime(Info, gc) time("Pause Final Mark", sh->gc_timer(), GCCause::_no_gc, true);
100 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::total_pause);
101 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::final_mark);
102 sh->concurrentMark()->finish_mark_from_roots();
103 sh->stop_concurrent_marking();
104 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::final_mark);
105 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::total_pause);
106
107 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::prepare_evac);
108 sh->prepare_for_concurrent_evacuation();
109 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::prepare_evac);
110
111 sh->set_evacuation_in_progress_at_safepoint(true);
112
113 // From here on, we need to update references.
114 sh->set_need_update_refs(true);
115
116 sh->shenandoahPolicy()->record_phase_start(ShenandoahCollectorPolicy::init_evac);
117 sh->evacuate_and_update_roots();
118 sh->shenandoahPolicy()->record_phase_end(ShenandoahCollectorPolicy::init_evac);
119 } else {
120 GCTraceTime(Info, gc) time("Cancel Concurrent Mark", sh->gc_timer(), GCCause::_no_gc, true);
121 sh->concurrentMark()->cancel();
122 sh->stop_concurrent_marking();
123 }
124 }
125
126 void VM_ShenandoahVerifyHeapAfterEvacuation::doit() {
127 GCIdMark gc_id_mark(_gc_id);
128 ShenandoahHeap *sh = ShenandoahHeap::heap();
129 sh->verify_heap_after_evacuation();
130 }
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