lib/38442: pthreads lack _POSIX_THREAD_PROCESS_SHARED support

[rtr%omicron-persei-8.net@localhost]

>Number:         38442
>Category:       lib
>Synopsis:       pthreads lack _POSIX_THREAD_PROCESS_SHARED support
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 16 14:20:00 +0000 2008
>Originator:     rtr%omicron-persei-8.net@localhost
>Release:        NetBSD 4.0
>Organization:
        don't look at me i'm just the janitor
>Environment:
System: NetBSD calculon.omicron-persei-8.net 4.0 NetBSD 4.0 (GENERIC) #0: Sun 
Dec 16 00:20:10 PST 2007 
builds@wb34:/home/builds/ab/netbsd-4-0-RELEASE/i386/200712160005Z-obj/home/builds/ab/netbsd-4-0-RELEASE/src/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
>Description:
NetBSD doesn't currently support pthread process shared synchronization
primitives.

in these days of many cores/CPUs applications programmers would appreciate
these and it would even enable some of us *cough* to move applications off
linux to NetBSD.

Pretty please make our sysconf(3) return 200112L for
_POSIX_THREAD_PROCESS_SHARED. but unlike apple did with MacOS X Leopard
actually implement the support instead of just claiming implementation
that doesn't exist. :)

>How-To-Repeat:
        200112L != sysconf(_POSIX_THREAD_PROCESS_SHARED); --> :(

        0 != pthread_xxxattr_setpshared(&attr, PTHREAD_PROCESS_SHARED) --> :(
>Fix:
        200112L == sysconf(_POSIX_THREAD_PROCESS_SHARED); --> :)

        0 == pthread_xxxattr_setpshared(&attr, PTHREAD_PROCESS_SHARED) --> :)