*
* This looks at the status of the btr node of the filter. If data is available
* in the input queue of the filter, or if an error occurred, a minimal timeout
* for the next select call is requested from the scheduler. Otherwise the
* scheduler timeout is left unchanged.
*/
*
* This looks at the status of the btr node of the filter. If data is available
* in the input queue of the filter, or if an error occurred, a minimal timeout
* for the next select call is requested from the scheduler. Otherwise the
* scheduler timeout is left unchanged.
*/