Method GetData

library/cpp/par/par_wb.h:214–246

            DO_EXTRACT
        };
        bool GetData(i64 key, TVector<char>* buf, EGetOp op) {
            buf->resize(0);
            TGuard<TMutex> gg(Lock);
            SetDataFromQueueLocked();
            TDataHash::iterator z = Data.find(key);
            if (z == Data.end()) {
                Y_ASSERT(0);
                return false;
            }

            if (z->second.GetData().size() == 1) {
                if (op == DO_COPY)
                    *buf = z->second.GetData().at(0);
                else { // DO_EXTRACT
                    buf->swap(z->second.GetData().at(0));
                    Data.erase(z);
                }
            } else {
                buf->resize(0);
                if (op == DO_COPY) {
                    for (size_t i = 0; i < z->second.GetData().size(); ++i) {
                        buf->insert(buf->end(), z->second.GetData().at(i).begin(), z->second.GetData().at(i).end());
                    }
                } else { // DO_EXTRACT
                    for (size_t i = 0; i < z->second.GetData().size(); ++i) {
                        buf->insert(buf->end(), z->second.GetData().at(i).begin(), z->second.GetData().at(i).end());
                        TVector<char>().swap(z->second.GetData().at(i));
                    }
                    Data.erase(z);
                }
            }
            return true;
        }

        bool GetData(i64 key, TVector<TVector<char>>* buf, EGetOp op) {
            buf->resize(0);