480     mQueue.push({std::move(work), drainMode});  in onQueueWork()
491     if (mQueue.empty()) {  in onDequeueWork()
505     std::unique_ptr<C2Work> work(std::move(mQueue.front().mWork));  in onDequeueWork()
506     auto drainMode = mQueue.front().mDrainMode;  in onDequeueWork()
507     mQueue.pop();  in onDequeueWork()
561     if (!mQueue.empty()) {  in onDequeueWork()
710     if (!mQueue.empty()) {  in onDrain()
713         if (mQueue.back().mDrainMode == NO_DRAIN) {  in onDrain()
714             mQueue.back().mDrainMode = drainMode;  in onDrain()
775     while (!mQueue.empty()) {  in onFlush()
776         mAbandonedWorks.emplace_back(std::move(mQueue.front().mWork));  in onFlush()
777         mQueue.pop();  in onFlush()
794     while (!mQueue.empty()) {  in onStop()
795         mAbandonedWorks.emplace_back(std::move(mQueue.front().mWork));  in onStop()
796         mQueue.pop();  in onStop()