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[thirdparty/man-pages.git] / man3 / usleep.3

diff --git a/man3/usleep.3 b/man3/usleep.3
index 58a70c0a95157f6a8929cc6d3c32ae1e0a98663a..292df58598eb9d6313ccdce9373ee92f5f668217 100644 (file)
--- a/man3/usleep.3
+++ b/man3/usleep.3
@@ -1,5 +1,6 @@
 .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
 .\"
+.\" %%%LICENSE_START(VERBATIM)
 .\" Permission is granted to make and distribute verbatim copies of this
 .\" manual provided the copyright notice and this permission notice are
 .\" preserved on all copies.
@@ -19,6 +20,7 @@
 .\"
 .\" Formatted or processed versions of this manual, if unaccompanied by
 .\" the source, must acknowledge the copyright and authors of this work.
+.\" %%%LICENSE_END
 .\"
 .\" References consulted:
 .\"     Linux libc source code
@@ -28,7 +30,7 @@
 .\" Modified 2001-04-01 by aeb
 .\" Modified 2003-07-23 by aeb
 .\"
-.TH USLEEP 3  2007-07-26 "" "Linux Programmer's Manual"
+.TH USLEEP 3  2010-12-03 "" "Linux Programmer's Manual"
 .SH NAME
 usleep \- suspend execution for microsecond intervals
 .SH SYNOPSIS
@@ -44,16 +46,33 @@ Feature Test Macro Requirements for glibc (see
 .in
 .sp
 .BR usleep ():
-_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
+.ad l
+.RS 4
+.PD 0
+.TP 4
+Since glibc 2.12:
+.nf
+_BSD_SOURCE ||
+    (_XOPEN_SOURCE\ >=\ 500 ||
+        _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED) &&
+    !(_POSIX_C_SOURCE\ >=\ 200809L || _XOPEN_SOURCE\ >=\ 700)
+.TP 4
+.fi
+Before glibc 2.12:
+_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
+_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
+.PD
+.RE
+.ad b
 .SH DESCRIPTION
 The
 .BR usleep ()
-function suspends execution of the calling process for
+function suspends execution of the calling thread for
 (at least) \fIusec\fP microseconds.
 The sleep may be lengthened slightly
 by any system activity or by the time spent processing the call or by the
 granularity of system timers.
-.SH "RETURN VALUE"
+.SH RETURN VALUE
 0 on success, \-1 on error.
 .SH ERRORS
 .TP
@@ -64,7 +83,7 @@ Interrupted by a signal; see
 .B EINVAL
 \fIusec\fP is not smaller than 1000000.
 (On systems where that is considered an error.)
-.SH "CONFORMING TO"
+.SH CONFORMING TO
 4.3BSD, POSIX.1-2001.
 POSIX.1-2001 declares this function obsolete; use
 .BR nanosleep (2)
@@ -108,14 +127,14 @@ signal, and with other timer functions such as
 .BR sleep (3),
 .BR nanosleep (2),
 .BR setitimer (2),
-.BR timer_create (3),
-.BR timer_delete (3),
-.BR timer_getoverrun (3),
-.BR timer_gettime (3),
-.BR timer_settime (3),
+.BR timer_create (2),
+.BR timer_delete (2),
+.BR timer_getoverrun (2),
+.BR timer_gettime (2),
+.BR timer_settime (2),
 .BR ualarm (3)
 is unspecified.
-.SH "SEE ALSO"
+.SH SEE ALSO
 .BR alarm (2),
 .BR getitimer (2),
 .BR nanosleep (2),