src/hotspot/share/gc/g1/g1SATBCardTableModRefBS.inline.hpp
author sjohanss
Tue, 14 Nov 2017 11:33:23 +0100
changeset 47885 5caa1d5f74c1
parent 47216 71c04702a3d5
child 47998 fb0275c320a0
permissions -rw-r--r--
8186571: Implementation: JEP 307: Parallel Full GC for G1 Summary: Improve G1 worst-case latencies by making the full GC parallel. Reviewed-by: tschatzl, sangheki, ehelin

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#ifndef SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP
#define SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP

#include "gc/g1/g1SATBCardTableModRefBS.hpp"
#include "oops/oop.inline.hpp"

// We export this to make it available in cases where the static
// type of the barrier set is known.  Note that it is non-virtual.
template <class T> void G1SATBCardTableModRefBS::inline_write_ref_field_pre(T* field, oop newVal) {
  T heap_oop = oopDesc::load_heap_oop(field);
  if (!oopDesc::is_null(heap_oop)) {
    enqueue(oopDesc::decode_heap_oop(heap_oop));
  }
}

// These are the more general virtual versions.
void G1SATBCardTableModRefBS::write_ref_field_pre_work(oop* field, oop new_val) {
  inline_write_ref_field_pre(field, new_val);
}
void G1SATBCardTableModRefBS::write_ref_field_pre_work(narrowOop* field, oop new_val) {
  inline_write_ref_field_pre(field, new_val);
}

void G1SATBCardTableModRefBS::set_card_claimed(size_t card_index) {
  jbyte val = _byte_map[card_index];
  if (val == clean_card_val()) {
    val = (jbyte)claimed_card_val();
  } else {
    val |= (jbyte)claimed_card_val();
  }
  _byte_map[card_index] = val;
}

#endif // SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP