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sched_getcpu.3: Update feature test macro requirements 

The requirements quietly changed changed in glibc 2.14

See also http://www.sourceware.org/bugzilla/show_bug.cgi?id=4749

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2013-03-01 10:49:23 +01:00
parent 33a0ccb293
commit cd05d2ff0b
1 changed files with 21 additions and 3 deletions
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24
man3/sched_getcpu.3
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@ -23,17 +23,35 @@
.\" the source, must acknowledge the copyright and authors of this work.
.\" %%%LICENSE_END
.\"
.TH SCHED_GETCPU 3 2010-10-31 "Linux" "Linux Programmer's Manual"
.TH SCHED_GETCPU 3 2013-03-01 "Linux" "Linux Programmer's Manual"
.SH NAME
sched_getcpu \- determine CPU on which the calling thread is running
.SH SYNOPSIS
.nf
.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
.\" Really:_BSD_SOURCE || _SVID_SOURCE
.B #include <sched.h>
.B int sched_getcpu(void);
.fi
.sp
.in -4n
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.in
.sp
.BR sched_getcpu ():
.ad l
.RS 4
.PD 0
.TP 4
Since glibc 2.14:
_GNU_SOURCE
.TP 4
Before glibc 2.14:
_BSD_SOURCE || _SVID_SOURCE
/* _GNU_SOURCE also suffices */
.PD
.RE
.ad b
.SH DESCRIPTION
.BR sched_getcpu ()
returns the number of the CPU on which the calling thread is currently executing.