manpage for nanosleep(2)

Obtained from: NetBSD  (I think jtc@netbsd.org wrote it)

1 files changed, 96 insertions, 0 deletions

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+.\"	$Id$
+.\"	$OpenBSD: nanosleep.2,v 1.1 1997/04/20 20:56:20 tholo Exp $
+.\"	$NetBSD: nanosleep.2,v 1.1 1997/04/17 18:12:02 jtc Exp $
+.\"
+.\" Copyright (c) 1986, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sleep.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd April 17, 1997
+.Dt NANOSLEEP 2
+.Os 
+.Sh NAME
+.Nm nanosleep
+.Sh SYNOPSIS
+.Fd #include <time.h>
+.Ft int
+.Fn nanosleep "const struct timespec *rqtp" "struct timespec *rmtp"
+.\" .Sh DESCRIPTION
+.Sh RETURN VALUE
+If the 
+.Fn nanosleep
+function returns because the requested time has elapsed, the value
+returned will be zero.  
+.Pp
+If the 
+.Fn nanosleep
+function returns due to the delivery of a signal, the value returned
+will be the -1, and the global variable
+.Va errno
+will be set to indicate the interruption.
+If 
+.Fa rmtp
+is 
+.Pf non- Dv NULL ,
+the timespec structure it references is updated to contain the
+unslept amount (the request time minus the time actually slept).
+.Sh ERRORS
+If any of the following conditions occur, the
+.Nm 
+function shall return -1 and set
+.Va errno
+to the corresponding value.
+.Bl -tag -width Er
+.It Bq Er EFAULT
+Either
+.Fa rqtp
+or 
+.Fa rmtp
+points to memory that is not a valid part of the process
+address space.
+.It Bq Er EINTR
+.Nm
+was interrupted by the delivery of a signal.
+.It Bq Er EINVAL
+.Fa rqtp
+specified a nanosecond value less than zero or greater than 1000 million.
+.It Bq Er ENOSYS
+.Nm
+is not supported by this implementation.
+.El
+.Sh SEE ALSO
+.Xr sleep 3
+.Sh STANDARDS
+The
+.Fn nanosleep
+function conforms to
+.St -p1003.1b-93 .