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getrlimit and setrlimit interface

From: Ludovic Courtès
Subject: getrlimit and setrlimit interface
Date: Sat, 21 Jun 2014 23:49:43 +0200
User-agent: Gnus/5.130009 (Ma Gnus v0.9) Emacs/24.3 (gnu/linux)

The ‘getrlimit’ and ‘setrlimit’ procedures are not documented in the
manual.  They’re supposed to be passed a symbol or a number:

  (getrlimit 'nofile) == (getrlimit 7) ≍ getrlimit (RLIMIT_NOFILE, &lim)

For most other POSIX functions with a similar interface, we instead
define Scheme variables with the same name as in C (like
‘RLIMIT_NOFILE’) and these are then passed directly to the procedure.

Here’s a proposal: define RLIMIT_* Scheme variables, document
‘getrlimit’ and ‘setrlimit’ to accept those, and emit a deprecation
warning when the symbol is used.



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