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

rev 47400 : [mq]: cmpxchg_ptr

*** 291,302 ****
    sprt->set_expanded(true);
    SparsePRT* hd = _head_expanded_list;
    while (true) {
      sprt->_next_expanded = hd;
      SparsePRT* res =
!       (SparsePRT*)
!       Atomic::cmpxchg_ptr(sprt, &_head_expanded_list, hd);
      if (res == hd) return;
      else hd = res;
    }
  }
  
--- 291,301 ----
    sprt->set_expanded(true);
    SparsePRT* hd = _head_expanded_list;
    while (true) {
      sprt->_next_expanded = hd;
      SparsePRT* res =
!       Atomic::cmpxchg(sprt, &_head_expanded_list, hd);
      if (res == hd) return;
      else hd = res;
    }
  }
  
*** 304,315 ****
  SparsePRT* SparsePRT::get_from_expanded_list() {
    SparsePRT* hd = _head_expanded_list;
    while (hd != NULL) {
      SparsePRT* next = hd->next_expanded();
      SparsePRT* res =
!       (SparsePRT*)
!       Atomic::cmpxchg_ptr(next, &_head_expanded_list, hd);
      if (res == hd) {
        hd->set_next_expanded(NULL);
        return hd;
      } else {
        hd = res;
--- 303,313 ----
  SparsePRT* SparsePRT::get_from_expanded_list() {
    SparsePRT* hd = _head_expanded_list;
    while (hd != NULL) {
      SparsePRT* next = hd->next_expanded();
      SparsePRT* res =
!       Atomic::cmpxchg(next, &_head_expanded_list, hd);
      if (res == hd) {
        hd->set_next_expanded(NULL);
        return hd;
      } else {
        hd = res;