BSL_UIO BSL_UIO_Append BSL_UIO_BufferMethod BSL_UIO_ClearFlags BSL_UIO_Ctrl BSL_UIO_CtrlParameter BSL_UIO_Free BSL_UIO_FreeChain BSL_UIO_FreeMethod BSL_UIO_GetCtx BSL_UIO_GetIsUnderlyingClosedByUio BSL_UIO_GetMethod BSL_UIO_Gets BSL_UIO_GetTransportType BSL_UIO_GetUserData BSL_UIO_New BSL_UIO_NewMethod BSL_UIO_Next BSL_UIO_PopCurrent BSL_UIO_Puts BSL_UIO_Read BSL_UIO_SctpMethod BSL_UIO_SetCtx BSL_UIO_SetFd BSL_UIO_SetFlags BSL_UIO_SetInit BSL_UIO_SetIsUnderlyingClosedByUio BSL_UIO_SetMethod BSL_UIO_SetMethodType BSL_UIO_SetUserData BSL_UIO_SetUserDataFreeFunc BSL_UIO_TcpMethod BSL_UIO_TestFlags BSL_UIO_TransportType BSL_UIO_UpRef BSL_UIO_USERDATA_FREE_FUNC BSL_UIO_Write

BSL_UIO_Read() int32_t BSL_UIO_Read ( BSL_UIO *  uio, void *  data, uint32_t  len, uint32_t *  readLen  ) Read data from the UIO object. 参数 uio [IN] uio object. data [IN] Buffer for receiving data len [IN] Length of the received data buffer. readLen [OUT] Length of the received data. 返回值 BSL_SUCCESS,The data is read successfully(Determined based on the actual receive length, if the length is 0 means no data is read.) BSL_INTERNAL_EXCEPTION,an unexpected internal error occurs. BSL_UIO_FAIL,invalid parameter. BSL_UIO_IO_EXCEPTION,IO is abnormal.