Method ListTooLong

BeefRT/gperftools/src/thread_cache.cc:193–215

}

void ThreadCache::ListTooLong(FreeList* list, size_t cl) {
  const int batch_size = Static::sizemap()->num_objects_to_move(cl);
  ReleaseToCentralCache(list, cl, batch_size);

  // If the list is too long, we need to transfer some number of
  // objects to the central cache.  Ideally, we would transfer
  // num_objects_to_move, so the code below tries to make max_length
  // converge on num_objects_to_move.

  if (list->max_length() < batch_size) {
    // Slow start the max_length so we don't overreserve.
    list->set_max_length(list->max_length() + 1);
  } else if (list->max_length() > batch_size) {
    // If we consistently go over max_length, shrink max_length.  If we don't
    // shrink it, some amount of memory will always stay in this freelist.
    list->set_length_overages(list->length_overages() + 1);
    if (list->length_overages() > kMaxOverages) {
      ASSERT(list->max_length() > batch_size);
      list->set_max_length(list->max_length() - batch_size);
      list->set_length_overages(0);
    }
  }
}

// Remove some objects of class "cl" from thread heap and add to central cache
void ThreadCache::ReleaseToCentralCache(FreeList* src, size_t cl, int N) {