Process hanging on 6.0-STABLE

[David Xu]

在 Friday 31 March 2006 08:38，Daniel O'Connor 写道：
> On Wednesday 22 March 2006 23:49, Daniel O'Connor wrote:
> > On Wednesday 22 March 2006 18:41, David Xu wrote:
> > > > The problem is that every now and then the process gets stuck and
> > > > becomes unkillable just after forking, ie..
> > >
> > > Are you using pthreads ?
> >
> > Nope.
> 
> Hmm I just found I had an FD leak - I am not sure if it's related.
> 
> Interestingly I had ~1046 FDs open and FD_SET wasn't working properly, eg...
>     fd_set		fds;
>     int			fd;
> 
>     fd = 1046;
>     FD_ZERO(&fds);
>     FD_SET(fd, &fds);
> 
> Results in fds being empty :(
> 
> Does anyone know if that is expected behaviour? And whether this problem 
could 
> cause the second one (eg tickle a bug).
> 
> Thanks.
> 
> -- 
> Daniel O'Connor software and network engineer
> for Genesis Software - http://www.gsoft.com.au
> "The nice thing about standards is that there
> are so many of them to choose from."
>   -- Andrew Tanenbaum
> GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
> 
In /sys/sys/select.h :
#ifndef FD_SETSIZE
#define FD_SETSIZE      1024U
#endif

so you should define FD_SETSIZE if you have fd which is larger than 1024.

Regards,
David Xu