[PATCH] Cygwin: getdtablesize: always return OPEN_MAX_MAX

[Corinna Vinschen]

On Feb  1 10:50, Corinna Vinschen via Cygwin-patches wrote:
> On Jan 28 15:33, Ken Brown via Cygwin-patches wrote:
> > On 1/28/2021 11:07 AM, Corinna Vinschen via Cygwin-patches wrote:
> > > One problem is that there are some applications in the wild which run
> > > loops up to either sysconf(_SC_OPEN_MAX) or OPEN_MAX to handle open
> > > descriptors.  tcsh is one of them.  It may slow done tcsh quite a bit
> > > if the loop runs to 3200 now every time.
> > 
> > I don't use tcsh.  Is it easy to test this?
> 
> I just checked the source.  In the olden days, before the invention of
> close-on-exec, tcsh closed all descriptors > 2 up to OPEN_MAX prior to
> starting any executable.
> 
> With close-on-exec this happens only at startup and after an error
> occured.
> 
> So testing should be easy: The tcsh startup may be noticably slower.

I checked this right now and I don't see a noticable, i. .e, any,
difference.


Corinna