SP_POLL(3) User Manuals SP_POLL(3) NAME SP_poll - checks amount of data ready to be read SYNOPSIS #include <sp.h> int SP_poll( mailbox mbox); DESCRIPTION SP_poll is a way to poll a mailbox to see if any messages are available for receiving. The value returned will be < 0 if error, 0 if nothing is avail- able, and the number of bytes waiting if something is there. RETURN VALUES Returns 0 if nothing is available or the number of bytes available, or one of the following errors ( < 0 ): ILLEGAL_SESSION The session specified by mbox is illegal. Usually because it is not active. BUGS None. AUTHOR Yair Amir <yairamir@cnds.jhu.edu> Jonathan Stanton <jonathan@cnds.jhu.edu> Commedia Project <commedia@cnds.jhu.edu> SEE ALSO libsp(3) SPREAD JULY 1998 SP_POLL(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | BUGS | AUTHOR | SEE ALSO
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