src/share/vm/gc/cms/parNewGeneration.cpp

rev 11971 : [mq]: overflow_list_3

*** 1284,1294 ****
      if (from_space_obj->forwardee() == from_space_obj) {
        oopDesc* listhead = NEW_C_HEAP_ARRAY(oopDesc, 1, mtGC);
        listhead->forward_to(from_space_obj);
        from_space_obj = listhead;
      }
!     oop observed_overflow_list = _overflow_list;
      oop cur_overflow_list;
      do {
        cur_overflow_list = observed_overflow_list;
        if (cur_overflow_list != BUSY) {
          from_space_obj->set_klass_to_list_ptr(cur_overflow_list);
--- 1284,1294 ----
      if (from_space_obj->forwardee() == from_space_obj) {
        oopDesc* listhead = NEW_C_HEAP_ARRAY(oopDesc, 1, mtGC);
        listhead->forward_to(from_space_obj);
        from_space_obj = listhead;
      }
!     oop observed_overflow_list = oop(_overflow_list);
      oop cur_overflow_list;
      do {
        cur_overflow_list = observed_overflow_list;
        if (cur_overflow_list != BUSY) {
          from_space_obj->set_klass_to_list_ptr(cur_overflow_list);
*** 1384,1394 ****
      oop suffix = cur->list_ptr_from_klass();       // suffix will be put back on global list
      cur->set_klass_to_list_ptr(NULL);     // break off suffix
      // It's possible that the list is still in the empty(busy) state
      // we left it in a short while ago; in that case we may be
      // able to place back the suffix.
!     oop observed_overflow_list = _overflow_list;
      oop cur_overflow_list = observed_overflow_list;
      bool attached = false;
      while (observed_overflow_list == BUSY || observed_overflow_list == NULL) {
        observed_overflow_list =
          (oop) Atomic::cmpxchg_ptr(suffix, &_overflow_list, cur_overflow_list);
--- 1384,1394 ----
      oop suffix = cur->list_ptr_from_klass();       // suffix will be put back on global list
      cur->set_klass_to_list_ptr(NULL);     // break off suffix
      // It's possible that the list is still in the empty(busy) state
      // we left it in a short while ago; in that case we may be
      // able to place back the suffix.
!     oop observed_overflow_list = oop(_overflow_list);
      oop cur_overflow_list = observed_overflow_list;
      bool attached = false;
      while (observed_overflow_list == BUSY || observed_overflow_list == NULL) {
        observed_overflow_list =
          (oop) Atomic::cmpxchg_ptr(suffix, &_overflow_list, cur_overflow_list);
*** 1403,1413 ****
        oop last = suffix;
        while (last->klass_or_null() != NULL) {
          last = last->list_ptr_from_klass();
        }
        // Atomically prepend suffix to current overflow list
!       observed_overflow_list = _overflow_list;
        do {
          cur_overflow_list = observed_overflow_list;
          if (cur_overflow_list != BUSY) {
            // Do the splice ...
            last->set_klass_to_list_ptr(cur_overflow_list);
--- 1403,1413 ----
        oop last = suffix;
        while (last->klass_or_null() != NULL) {
          last = last->list_ptr_from_klass();
        }
        // Atomically prepend suffix to current overflow list
!       observed_overflow_list = oop(_overflow_list);
        do {
          cur_overflow_list = observed_overflow_list;
          if (cur_overflow_list != BUSY) {
            // Do the splice ...
            last->set_klass_to_list_ptr(cur_overflow_list);