NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part1/8206

Internet Message Format | 1996-08-05 | 1.6 KB

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From: Lawrence Kirby <[e-mail]>
Newsgroups: comp.lang.c
Subject: Re: non-blocking I/O on X.25
Date: Fri, 01 Mar 96 22:08:12 GMT
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In article <[e-mail]> [e-mail] "Matt Raffel" writes:

>I have to write a program that will "put" and "get"
>characters from X.25 connection.  (In X.25 stdin and
>stdout are redirected to the tty emulation--so
>I can use printf, getchar, and fgetchar etc...)

What you are describing here are some of the features of a particular
X.25 implementation - not properties of X.25 in general. The key word
here is probably 'tty' which suggests that you may be using a Unix system.

>But, what I need to do is non-blocking.  I never
>have done non-blocking I/O.  I have looked at the
>FAQ, but the one I had did not contain any examples.

The problem is that the C language has no support for non-blocking I/O; you
have to use whatever support your particular OS provides. If you are using
Unix TTYs then you use the Unix TTY control interface (termio/termios) to
control them. However that is entirely Unix specific and the correct place
to ask about it is in comp.unix.programmer.

--
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Lawrence Kirby | [e-mail]
Wilts, England | [e-mail]
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