src/hotspot/share/gc/shared/satbMarkQueue.cpp

*** 134,144 ****
    do {
      old = value;
      value += 2;
      assert(value > old, "overflow");
      if (value > threshold) value |= 1;
!     value = Atomic::cmpxchg(value, cfptr, old);
    } while (value != old);
  }
  
  // Decrement count.  If count == 0, clear flag, else maintain flag.
  static void decrement_count(volatile size_t* cfptr) {
--- 134,144 ----
    do {
      old = value;
      value += 2;
      assert(value > old, "overflow");
      if (value > threshold) value |= 1;
!     value = Atomic::cmpxchg(cfptr, old, value);
    } while (value != old);
  }
  
  // Decrement count.  If count == 0, clear flag, else maintain flag.
  static void decrement_count(volatile size_t* cfptr) {
*** 147,157 ****
    do {
      assert((value >> 1) != 0, "underflow");
      old = value;
      value -= 2;
      if (value <= 1) value = 0;
!     value = Atomic::cmpxchg(value, cfptr, old);
    } while (value != old);
  }
  
  void SATBMarkQueueSet::set_process_completed_buffers_threshold(size_t value) {
    // Scale requested threshold to align with count field.  If scaling
--- 147,157 ----
    do {
      assert((value >> 1) != 0, "underflow");
      old = value;
      value -= 2;
      if (value <= 1) value = 0;
!     value = Atomic::cmpxchg(cfptr, old, value);
    } while (value != old);
  }
  
  void SATBMarkQueueSet::set_process_completed_buffers_threshold(size_t value) {
    // Scale requested threshold to align with count field.  If scaling