235     DWORD bytesRead = 0;  in ReadUartDev()  local
237     ssize_t bytesRead = 0;  in ReadUartDev()  local
240         bytesRead = 0;  in ReadUartDev()
243                                     &bytesRead, &uart.ovRead);  in ReadUartDev()
246                 bytesRead = 0;  in ReadUartDev()
251                 if (!GetOverlappedResultEx(uart.devUartHandle, &uart.ovRead, &bytesRead,  in ReadUartDev()
256                         totalBytesRead += bytesRead;  in ReadUartDev()
258                                   bytesRead, totalBytesRead);  in ReadUartDev()
264                         totalBytesRead += bytesRead;  in ReadUartDev()
265                         WRITE_LOG(LOG_DEBUG, "%s error timeout. %u %zd", __FUNCTION__, bytesRead,  in ReadUartDev()
328             bytesRead = read(uart.devUartHandle, uartReadBuffer, sizeof(uartReadBuffer));  in ReadUartDev()
329             if (bytesRead <= 0) {  in ReadUartDev()
331                 WRITE_LOG(LOG_WARN, "%s:read failed! %zd:%d", __FUNCTION__, bytesRead, errno);  in ReadUartDev()
336         if (bytesRead > 0) {  in ReadUartDev()
337             readBuf.insert(readBuf.end(), uartReadBuffer, uartReadBuffer + bytesRead);  in ReadUartDev()
338             totalBytesRead += bytesRead;  in ReadUartDev()
341              bytesRead == 0); // if caller know how many bytes it want  in ReadUartDev()