57
58 void ShenandoahSTWMarkTask::work(uint worker_id) {
59 ShenandoahParallelWorkerSession worker_session(worker_id);
60 _mark->mark_roots(worker_id);
61 _mark->finish_mark(worker_id);
62 }
63
64 ShenandoahSTWMark::ShenandoahSTWMark(ShenandoahGeneration* generation, bool full_gc) :
65 ShenandoahMark(generation),
66 _root_scanner(full_gc ? ShenandoahPhaseTimings::full_gc_mark : ShenandoahPhaseTimings::degen_gc_stw_mark),
67 _terminator(ShenandoahHeap::heap()->workers()->active_workers(), task_queues()),
68 _full_gc(full_gc) {
69 assert(ShenandoahSafepoint::is_at_shenandoah_safepoint(), "Must be at a Shenandoah safepoint");
70 }
71
72 void ShenandoahSTWMark::mark() {
73 ShenandoahHeap* const heap = ShenandoahHeap::heap();
74
75 // Arm all nmethods. Even though this is STW mark, some marking code
76 // piggybacks on nmethod barriers for special instances.
77 ShenandoahCodeRoots::arm_nmethods_for_mark();
78
79 // Weak reference processing
80 ShenandoahReferenceProcessor* rp = _generation->ref_processor();
81 rp->reset_thread_locals();
82
83 // Init mark, do not expect forwarded pointers in roots
84 if (ShenandoahVerify) {
85 assert(Thread::current()->is_VM_thread(), "Must be");
86 heap->verifier()->verify_roots_no_forwarded(_generation);
87 }
88
89 start_mark();
90
91 uint nworkers = heap->workers()->active_workers();
92 task_queues()->reserve(nworkers);
93
94 TASKQUEUE_STATS_ONLY(task_queues()->reset_taskqueue_stats());
95
96 {
97 // Mark
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57
58 void ShenandoahSTWMarkTask::work(uint worker_id) {
59 ShenandoahParallelWorkerSession worker_session(worker_id);
60 _mark->mark_roots(worker_id);
61 _mark->finish_mark(worker_id);
62 }
63
64 ShenandoahSTWMark::ShenandoahSTWMark(ShenandoahGeneration* generation, bool full_gc) :
65 ShenandoahMark(generation),
66 _root_scanner(full_gc ? ShenandoahPhaseTimings::full_gc_mark : ShenandoahPhaseTimings::degen_gc_stw_mark),
67 _terminator(ShenandoahHeap::heap()->workers()->active_workers(), task_queues()),
68 _full_gc(full_gc) {
69 assert(ShenandoahSafepoint::is_at_shenandoah_safepoint(), "Must be at a Shenandoah safepoint");
70 }
71
72 void ShenandoahSTWMark::mark() {
73 ShenandoahHeap* const heap = ShenandoahHeap::heap();
74
75 // Arm all nmethods. Even though this is STW mark, some marking code
76 // piggybacks on nmethod barriers for special instances.
77 ShenandoahCodeRoots::arm_nmethods();
78
79 // Weak reference processing
80 ShenandoahReferenceProcessor* rp = _generation->ref_processor();
81 rp->reset_thread_locals();
82
83 // Init mark, do not expect forwarded pointers in roots
84 if (ShenandoahVerify) {
85 assert(Thread::current()->is_VM_thread(), "Must be");
86 heap->verifier()->verify_roots_no_forwarded(_generation);
87 }
88
89 start_mark();
90
91 uint nworkers = heap->workers()->active_workers();
92 task_queues()->reserve(nworkers);
93
94 TASKQUEUE_STATS_ONLY(task_queues()->reset_taskqueue_stats());
95
96 {
97 // Mark
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