Re: use of c select() style events with the objc run loop
Re: use of c select() style events with the objc run loop
- Subject: Re: use of c select() style events with the objc run loop
- From: Douglas Davidson <email@hidden>
- Date: Mon, 10 May 2004 10:02:24 -0700
On May 10, 2004, at 9:25 AM, j o a r wrote:
Have you checked the documentation for NSStream, NSFileHandle, et.c.
(and their CF counterparts)?
j o a r
On 2004-05-10, at 17.57, Robert Goldsmith wrote:
I want to monitor input on a raw serial port - something I would use
select for under c. However, has anyone any suggestions on how I can
do
it using the event system in a gui objc app? This is a raw serial
port,
not a tcp port, being controlled using the standard posix/c read and
write commands.
I would like to be able to catch and display serial port input and
transmit typed content from an NSTextView without the serial port
routines blocking. An event sounds the most sensible and, if I have
to,
I suppose I could use a timer and poll, but that seems wrong somehow
:)
For pure select() notification in the run loop, you can use CFSocket.
It is designed primarily for use with sockets, but as long as you use
only the read and write notifications, and not any of the
socket-specific functionality, it can be used with other file
descriptors. NSFileHandle is also a Foundation-level alternative, but
it operates at a somewhat higher level.
Douglas Davidson
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