Hi Dave.
Thank you! That is exactly what I was getting at.
It's rather sad the definition isn't copied from the system's descriptor
limit, and even more that it's necessary to add the #ifndef to enable
overriding it (not to mention the fact that a different symbol needs to be
overriden in BSD), but this does seem to be the solution.
But this is a much more productive course of action than insisting that
every library in the world be modified to work around the issue.
On Wed, 14 Oct 2009, Dave Horton wrote:
I had a completely different application (voice over ip media processing)
that once had the same (or maybe just similar) issue where I needed the box
to allow for more sockets/file descriptors. What I did was modify
/usr/include/bits/typesizes as follows:
[bu...@pcs-build-rh3 bits]$ diff typesizes.h typesizes.h.ORIG
63d62
< #ifndef __FD_SETSIZE
65d63
< #endif
in other words, just put an ifndef around the definition of __FD_SETSIZE so
it read like this:
/* Number of descriptors that can fit in an `fd_set'. */
#ifndef __FD_SETSIZE
#define __FD_SETSIZE 1024
#endif
Then in my app I defined __FD_SETSIZE to be much larger (8092). I had no
problems issuing selects after that on larger groups of sockets/file
descriptors.
Not sure if this helps or is relevant (or was already stated), as I have
following this thread at a high level
-- Mark --
http://panda.com/mrc
Democracy is two wolves and a sheep deciding what to eat for lunch.
Liberty is a well-armed sheep contesting the vote.
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