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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
| commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
| tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man3/sleep.3 | |
| parent | Initial commit. (diff) | |
| download | manpages-upstream/6.05.01.tar.xz manpages-upstream/6.05.01.zip | |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/sleep.3')
| -rw-r--r-- | man3/sleep.3 | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/man3/sleep.3 b/man3/sleep.3 new file mode 100644 index 0000000..cf87069 --- /dev/null +++ b/man3/sleep.3 @@ -0,0 +1,80 @@ +'\" t +.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" Modified Sat Jul 24 18:16:02 1993 by Rik Faith (faith@cs.unc.edu) +.TH sleep 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +sleep \- sleep for a specified number of seconds +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <unistd.h> +.PP +.BI "unsigned int sleep(unsigned int " "seconds" ); +.fi +.SH DESCRIPTION +.BR sleep () +causes the calling thread to sleep either until +the number of real-time seconds specified in +.I seconds +have elapsed or until a signal arrives which is not ignored. +.SH RETURN VALUE +Zero if the requested time has elapsed, +or the number of seconds left to sleep, +if the call was interrupted by a signal handler. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR sleep () +T} Thread safety MT-Unsafe sig:SIGCHLD/linux +.TE +.sp 1 +.SH VERSIONS +On Linux, +.BR sleep () +is implemented via +.BR nanosleep (2). +See the +.BR nanosleep (2) +man page for a discussion of the clock used. +.PP +On some systems, +.BR sleep () +may be implemented using +.BR alarm (2) +and +.B SIGALRM +(POSIX.1 permits this); +mixing calls to +.BR alarm (2) +and +.BR sleep () +is a bad idea. +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001. +.SH CAVEATS +Using +.BR longjmp (3) +from a signal handler or modifying the handling of +.B SIGALRM +while sleeping will cause undefined results. +.SH SEE ALSO +.BR sleep (1), +.BR alarm (2), +.BR nanosleep (2), +.BR signal (2), +.BR signal (7) |