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Add support for sysconf(_SC_NPROCESSORS_CONF) and sysconf(_SC_NPROCESSORS_ONLN).

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This API is supported in SVR4.0MP, Solaris, Linux, AIX and Tru64 Unix.

PR:		bin/27489
Submitted by:	Arun Sharma <arun@sharma-home.net>
Reviewed by:	bde (prior version)
This commit is contained in:
Joseph Koshy 2001-12-01 12:07:42 +00:00
parent 4f25b0aa46
commit 4d44f0b5a3
3 changed files with 17 additions and 0 deletions
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4
lib/libc/gen/sysconf.3
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@ -83,6 +83,10 @@ and
.Xr sendmsg 2 .
.It Li _SC_NGROUPS_MAX
The maximum number of supplemental groups.
.It Li _SC_NPROCESSORS_CONF
The number of processors configured.
.It Li _SC_NPROCESSORS_ONLN
The number of processors currently online.
.It Li _SC_OPEN_MAX
The maximum number of open files per user id.
.It Li _SC_STREAM_MAX

8
lib/libc/gen/sysconf.c
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@ -290,6 +290,14 @@ sysconf(name)
goto yesno;
#endif /* _P1003_1B_VISIBLE */
#if defined(_SC_NPROCESSORS_CONF) && defined(_SC_NPROCESSORS_ONLN)
case _SC_NPROCESSORS_CONF:
case _SC_NPROCESSORS_ONLN:
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
break;
#endif
#ifdef _SC_IOV_MAX
case _SC_IOV_MAX:
mib[0] = CTL_KERN;

5
sys/sys/unistd.h
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@ -201,6 +201,11 @@
#define _SC_IOV_MAX 56
#ifndef _POSIX_SOURCE
/* Linux/Solaris/AIX/SVR4.0MP API */
#define _SC_NPROCESSORS_CONF 57
#define _SC_NPROCESSORS_ONLN 58
/*
* rfork() options.
*