Re: GIOChannel & Intercepting stdout

[Hrvoje Niksic <hrvoje niksic avl com>]

On 08/26/2010 02:16 PM, Magnus Hjorth wrote:
> >  you do (and the size of the output exceeds the pipe's buffer, which is
> >  fairly small), that thread will deadlock deep inside stdio.  This can
>
> Is the buffer really that small? I made a simple test program (below) to
> check this out, and it seems that writes up to 64K work without blocking
> on my Ubuntu system.

I stand corrected.  I seem to remember small pipe buffer sizes on other 
Unix systems (the numbers 512 and 4096 come to mind), but I guess they 
enlarged it at some point, at least on Linux 
(http://lwn.net/Articles/118750/ details possibly related changes in 
2005).  Still, as you say, depending on this hidden constant is 
non-portable and a potential source of sneaky bugs.