1 .\" $OpenBSD: nanosleep.2,v 1.1 1997/04/20 20:56:20 tholo Exp $
2 .\" $NetBSD: nanosleep.2,v 1.1 1997/04/17 18:12:02 jtc Exp $
4 .\" Copyright (c) 1986, 1991, 1993
5 .\" The Regents of the University of California. All rights reserved.
7 .\" Redistribution and use in source and binary forms, with or without
8 .\" modification, are permitted provided that the following conditions
10 .\" 1. Redistributions of source code must retain the above copyright
11 .\" notice, this list of conditions and the following disclaimer.
12 .\" 2. Redistributions in binary form must reproduce the above copyright
13 .\" notice, this list of conditions and the following disclaimer in the
14 .\" documentation and/or other materials provided with the distribution.
15 .\" 4. Neither the name of the University nor the names of its contributors
16 .\" may be used to endorse or promote products derived from this software
17 .\" without specific prior written permission.
19 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 .\" @(#)sleep.3 8.1 (Berkeley) 6/4/93
39 .Nd suspend process execution for an interval measured in nanoseconds
45 .Fn nanosleep "const struct timespec *rqtp" "struct timespec *rmtp"
50 causes the calling thread to sleep until the time interval specified by
53 An unmasked signal will
54 cause it to terminate the sleep early, regardless of the
56 value on the interrupting signal.
60 system call returns because the requested time has elapsed, the value
61 returned will be zero.
65 system call returns due to the delivery of a signal, the value returned
66 will be -1, and the global variable
68 will be set to indicate the interruption.
73 the timespec structure it references is updated to contain the
74 unslept amount (the request time minus the time actually slept).
85 points to memory that is not a valid part of the process
91 was interrupted by the delivery of a signal.
96 specified a nanosecond value less than zero
97 or greater than or equal to 1000 million.
102 is not supported by this implementation.
110 system call conforms to