From: Robert Klemme <bob.news@...>
Date: 2004-08-25T05:05:41+09:00
Subject: Re: Find the number of open files


"Charles Mills" <cmills@freeshell.org> schrieb im Newsbeitrag
news:267B9838-F607-11D8-93A8-000A95A27A10@freeshell.org...
> On Aug 24, 2004, at 12:41 PM, Charles Mills wrote:
>
> > Is there an easy way to find out the number of open files held by a
> > process (using C or Ruby)?
> >
> I think the way I phrased the question above makes the problem sound
> harder than it is...
> I am unittesting a C extension.  The extension opens files using
> open().  I want to make sure that the extension closes all the files it
> opens (when errors occur or whatever).
>
> So I figured getting a count of open file descriptors before the
> extension code is called and after it is finished would enable me to do
> this.

IMHO this would not be safe unless you disable threading: another thread
could open or close files in the meantime.

Why don't you just create a customized class that does the bookkeeping?
Alternatively you could hand in open IO objects, if the logic of your
extension allows this.

Kind regards

    robert