src/hotspot/share/gc/g1/g1RemSet.cpp

8196341: Add JFR events for parallel phases of G1

 #include "gc/g1/heapRegion.inline.hpp"
 #include "gc/g1/heapRegionManager.inline.hpp"
 #include "gc/g1/heapRegionRemSet.hpp"
 #include "gc/shared/gcTraceTime.inline.hpp"
 #include "gc/shared/suspendibleThreadSet.hpp"
+#include "jfr/jfrEvents.hpp"
 #include "memory/iterator.hpp"
 #include "memory/resourceArea.hpp"
 #include "oops/access.inline.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/os.hpp"

@@ -337,10 +338,11
   _scan_objs_on_card_cl->trim_queue_partially();
   _cards_scanned++;
 }
 
 void G1ScanRSForRegionClosure::scan_rem_set_roots(HeapRegion* r) {
+  EventGCPhaseParallel event;
   uint const region_idx = r->hrm_index();
 
   if (_scan_state->claim_iter(region_idx)) {
     // If we ever free the collection set concurrently, we should also
     // clear the card table concurrently therefore we won't need to

@@ -390,14 +392,17
 
     MemRegion const mr(card_start, MIN2(card_start + BOTConstants::N_words, top));
 
     scan_card(mr, region_idx_for_card);
   }
+  event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::ScanRS));
 }
 
 void G1ScanRSForRegionClosure::scan_strong_code_roots(HeapRegion* r) {
+  EventGCPhaseParallel event;
   r->strong_code_roots_do(_pss->closures()->weak_codeblobs());
+  event.commit(GCId::current(), _worker_i, G1GCPhaseTimes::phase_name(G1GCPhaseTimes::CodeRoots));
 }
 
 bool G1ScanRSForRegionClosure::do_heap_region(HeapRegion* r) {
   assert(r->in_collection_set(),
          "Should only be called on elements of the collection set but region %u is not.",