Re: non-blocking file access

[Harring Figueiredo <harringf yahoo com>]

http://developer.gnome.org/doc/API/2.0/glib/glib-IO-Channels.html

Harring

--- Paul Pogonyshev <pogonyshev gmx net> wrote:
> Hi.
>
> I need to watch several files (pipes) and read information from them
> in a GUI program.  My main target platform is GNU/Linux, but I'd prefer
> to do it as platform-independent as possible (probably hiding platform-
> dependent functions in GLib).  GLib provides a way to portably create
> processes and pipes to them, so this part is solvable nicely.
>
> The next part is performing non-blocking and efficient reading from
> the pipes.  As I have understood, GLib provides a way to watch file
> descriptors for new data with custom event sources.  However, I was
> unable to determine if it is possible to read all available data from a
> pipe with GLib (or with ANSI C file/stream access functions).
>
> So, can anyone point me to a way of implementing this efficiently and
> using as few platform-specific functions as possible?  GLib + ANSI C
> functions are preferable, any other portable functions are the next to
> best choice.  If you can give me just basic ideas, that's fine, I'm sure
> I can do without sample code :)
>
> I'd also like to know if a write operation to a pipe can block.
>
> Thanks in advance.
>
> Paul
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