CVS commit: src

["Emmanuel Dreyfus" <manu%netbsd.org@localhost>]

Module Name:    src
Committed By:   manu
Date:           Fri May 29 07:37:32 UTC 2015

Modified Files:
        src/include: limits.h
        src/lib/libpthread: pthread.c pthread_int.h pthread_key_create.3
            pthread_tsd.c
        src/lib/libpthread_dbg: pthread_dbg.c

Log Message:
Make PTHREAD_KEYS_MAX dynamically adjustable

NetBSD's PTHREAD_KEYS_MAX is set to 256, which is low compared to
other systems like Linux (1024) or MacOS X (512). As a result some
setups tested on Linux will exhibit problems on NetBSD because of
pthread_keys usage beyond the limit. This happens for instance on
Apache with various module loaded, and in this case no particular
developper can be blamed for going beyond the limit, since several
modules from different sources contribute to the problem.

This patch makes the limit conigurable through the PTHREAD_KEYS_MAX
environement variable. If undefined, the default remains unchanged
(256). In any case, the value cannot be lowered below POSIX-mandated
_POSIX_THREAD_KEYS_MAX (128).

While there:
- use EXIT_FAILURE instead of 1 when calling err(3) in libpthread.
- Reset _POSIX_THREAD_KEYS_MAX to POSIX mandated 128, instead of 256.


To generate a diff of this commit:
cvs rdiff -u -r1.33 -r1.34 src/include/limits.h
cvs rdiff -u -r1.145 -r1.146 src/lib/libpthread/pthread.c
cvs rdiff -u -r1.90 -r1.91 src/lib/libpthread/pthread_int.h
cvs rdiff -u -r1.6 -r1.7 src/lib/libpthread/pthread_key_create.3
cvs rdiff -u -r1.11 -r1.12 src/lib/libpthread/pthread_tsd.c
cvs rdiff -u -r1.42 -r1.43 src/lib/libpthread_dbg/pthread_dbg.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.