[erlang-patches] Lift limitation to FD_SETSIZE file descriptors on Mac OS X in erl_poll

Fredrik <>
Mon May 13 10:27:46 CEST 2013

On 05/12/2013 05:36 PM, Anthony Ramine wrote:
> Hello,
> I've written a patch that makes erl_poll uses _DARWIN_UNLIMITED_SELECT on Mac OS X. This constant makes select() work with more than FD_SETSIZE file descriptors, all that is needed is to manually manage the fd_set values.
> I've run port_SUITE.iter_max_ports test case and got a maximum of 2422 ports instead of 502 before.
> Cc'ing Joel Reymont and Max Lapshin because I know they both encountered that problem.
> 	git fetch https://github.com/nox/otp.git darwin-unlimited-select
> 	https://github.com/nox/otp/compare/erlang:maint...darwin-unlimited-select
> 	https://github.com/nox/otp/compare/erlang:maint...darwin-unlimited-select.patch
> Regards,
Hello Anthony,
I've fetched your branch and it is now located in the 'pu' branch.


BR Fredrik Gustafsson
Erlang OTP Team

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