On Fri, 14 Sep 2007, Mattias Engdegård wrote:

>> Probably irrelevant here, but this approach wouldn't work under Windows
>> (Unix.file_descr is the Win32 file handle at that point which is often
>> larger than 1024). More relevantly, Unix can be reconfigured to allow for
>> more than 1024 open files.
>
> I think platform-dependent code is required here. The common way of 
> doing this under Linux (and Solaris, probably) is to readdir 
> /proc/PID/fd/. Windows is of course very different.

I like this approach. It doesn't eliminate the need to convert ints to 
descrs, but at least you don't have a bunch of unnecessary system calls or 
a hard-coded maximum (assuming getrlimit is unavailable, as it is with 
OCaml currently). I wonder if /dev/fd is more or less portable...

Dave