bupoll.mn

bupoll
_ufds_ _nfds_ _timeout_

#include <jelio.h>

bupoll is a variation on the theme of select and poll. The only difference compared to poll is that the internal jelio buffers are checked before a regular poll() is called.
If there was buffered data still to be read POLLIN is set for that filedescriptor.
For the full details of poll se the poll manpage.

On success, a positive number is returned, where the number returned is the number of structures which have non-zero revents fields (in other words, those descriptors with events or errors reported). A value of 0 indicates that the call timed out and no file descriptors have been selected. On error, -1 is returned, and errno is set appropriately.
For the full details of poll se the poll manpage.

poll ,
buclose