On Mon, Mar 24, 2003 at 05:08:08PM +1100, James Gregory wrote:
> On Mon, 2003-03-24 at 17:08, Amanda Wynne wrote:
> > I mean I only get output to the screen about every 20th call to printf.
>
> stdout is line buffered by default IIRC. You probably want to switch
> your pty to "hot" mode or something - I don't recall the details, but
> search for "stdout buffer mode" - you should find something useful.
See setbuf(3):
The three types of buffering available are unbuffered,
block buffered, and line buffered. When an output stream
is unbuffered, information appears on the destination file
or terminal as soon as written; when it is block buffered
many characters are saved up and written as a block; when
it is line buffered characters are saved up until a new-
line is output or input is read from any stream attached
to a terminal device (typically stdin).
To make stdout unbuffered, call setbuf(stdout, _IONBF);
Cheers,
John
>
> Just a guess.
>
> James.
>
> >
> >
> > On Monday 24 Mar 2003 5:00 pm, Ian Su wrote:
> > > \r just moves the cursor, it won't "update the line". Whatever you mean by
> > > that.
> > >
> > > printf("hello world\rfoo bar\n");
> > >
> > > would print
> > >
> > > foo barorld
> > >
> > > so it could be a matter of inserting spaces after your string?
> > >
> >
>
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