ph_rfd(3) C Library Calls ph_rfd(3)NAME
ph_rfd, ph_wfd - return file descriptors associated with a PH handle
SYNOPSIS
#include <phclient.h>
int ph_rfd(PH *ph);
int ph_wfd(PH *ph);
VERSION
This man page documents version 1.2 of libphclient.
DESCRIPTION
The ph_rfd() and ph_wfd() functions allow the application to access the
underlying file descriptors used by the PH handle ph to communicate
with the PH server. The application can use this information to detect
communications problems with the server using poll() or select().
RETURN VALUES
The ph_rfd() function returns the file descriptor used for reading from
the server.
The ph_wfd() function returns the file descriptor used for writing to
the server.
NOTES
The file descriptors used for reading and writing may be (and usually
are) the same.
The application must not write to or read from the file descriptors
returned by the ph_rfd() and ph_wfd() functions. If it does, the PH
handle may be left in an inconsistent state, and all subsequent behav‐
ior is undefined.
SEE ALSOph_open(3)University of Illinois Oct 2002 ph_rfd(3)
