Repatch (from linux) of OSX IRAF

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/poll.h b/lib/poll.h
new file mode 100644
index 00000000..f519411f
--- /dev/null
+++ b/lib/poll.h
@@ -0,0 +1,26 @@
+# POLL.H -- FPOLL definitions (poll a set of file descriptors).
+
+define  MAX_POLL_FD    	32              # max number of polling fds
+define  MPFD		MAX_POLL_FD    	# utility shorthand
+define	LEN_FPOLL	(4+(3*MPFD))	# length of polling structure
+
+define	INFTIM		-1		# poll will block until event
+
+
+# Structure of file descriptor/event pairs supplied in the poll arrays. The
+# array elements are zero-indexed.
+define	POLL_NFD	Memi[$1]	       # no. of file descriptors to poll
+define	POLL_FD		Memi[$1+1+(0*MPFD)+$2] # file descriptor array
+define	POLL_EVENTS	Memi[$1+1+(1*MPFD)+$2] # events of interest on fd
+define	POLL_REVENTS	Memi[$1+1+(2*MPFD)+$2] # (return) events on fd
+
+# Testable select events.
+define 	POLLIN		001B		# fd is readable
+define 	POLLPRI		002B		# priority info at fd
+define 	POLLOUT         004B		# fd is writeable (won't block)
+
+# Non-testable poll events (may not be specified in events field,
+# but may be returned in revents field).
+define POLLERR		010B		# fd has error condition
+define POLLHUP		020B		# fd has been hung up on
+define POLLNVAL		040B		# invalid pollfd entry