Annotation of src/lib/libc/gen/usleep.c, Revision 1.19
1.19 ! martin 1: /* $NetBSD: usleep.c,v 1.18 2006/10/08 15:25:28 elad Exp $ */
1.4 cgd 2:
1.12 jtc 3: /*-
4: * Copyright (c) 1997 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by J.T. Conklin.
1.1 cgd 9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
1.12 jtc 19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
1.1 cgd 30: */
31:
1.13 kleink 32: #include <sys/cdefs.h>
1.1 cgd 33: #if defined(LIBC_SCCS) && !defined(lint)
1.19 ! martin 34: __RCSID("$NetBSD: usleep.c,v 1.18 2006/10/08 15:25:28 elad Exp $");
1.1 cgd 35: #endif /* LIBC_SCCS and not lint */
36:
1.14 jtc 37: #include "namespace.h"
1.16 kleink 38: #include <errno.h>
1.12 jtc 39: #include <time.h>
1.1 cgd 40: #include <unistd.h>
1.14 jtc 41:
42: #ifdef __weak_alias
1.17 mycroft 43: __weak_alias(usleep,_usleep)
1.14 jtc 44: #endif
1.1 cgd 45:
1.16 kleink 46: int
1.1 cgd 47: usleep(useconds)
1.16 kleink 48: useconds_t useconds;
1.1 cgd 49: {
1.12 jtc 50: struct timespec ts;
51:
1.18 elad 52: if (useconds == 0)
53: return (0);
54:
1.16 kleink 55: if (useconds >= 1000000) {
56: errno = EINVAL;
57: return (-1);
58: }
59:
60: ts.tv_sec = 0;
61: ts.tv_nsec = useconds * 1000;
1.12 jtc 62:
63: nanosleep(&ts, NULL);
1.16 kleink 64:
65: return (0);
1.1 cgd 66: }
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