122   BGQueue       queue_;  member
141       queue_(),  in Impl()
196            (queue_.empty() || IsExcessiveThread(thread_id))) {  in BGThread()
203           queue_.empty()) {  in BGThread()
223     auto func = std::move(queue_.front().function);  in BGThread()
224     queue_.pop_front();  in BGThread()
226     queue_len_.store(static_cast<unsigned int>(queue_.size()),  in BGThread()
370   queue_.push_back(BGItem());  in Submit()
372   auto& item = queue_.back();  in Submit()
377   queue_len_.store(static_cast<unsigned int>(queue_.size()),  in Submit()
398     BGQueue::iterator it = queue_.begin();  in UnSchedule()
399     while (it != queue_.end()) {  in UnSchedule()
404         it = queue_.erase(it);  in UnSchedule()
410     queue_len_.store(static_cast<unsigned int>(queue_.size()),  in UnSchedule()