xref: /freebsd/lib/libc/gen/usleep.c (revision 7dd9070e4425a1c2e2418694fd632425a283d558)
17d233b22SKonstantin Belousov /*-
27d233b22SKonstantin Belousov  * SPDX-License-Identifier: BSD-3-Clause
37d233b22SKonstantin Belousov  *
47d233b22SKonstantin Belousov  * Copyright (c) 1989, 1993
57d233b22SKonstantin Belousov  *	The Regents of the University of California.  All rights reserved.
67d233b22SKonstantin Belousov  *
77d233b22SKonstantin Belousov  * Redistribution and use in source and binary forms, with or without
87d233b22SKonstantin Belousov  * modification, are permitted provided that the following conditions
97d233b22SKonstantin Belousov  * are met:
107d233b22SKonstantin Belousov  * 1. Redistributions of source code must retain the above copyright
117d233b22SKonstantin Belousov  *    notice, this list of conditions and the following disclaimer.
127d233b22SKonstantin Belousov  * 2. Redistributions in binary form must reproduce the above copyright
137d233b22SKonstantin Belousov  *    notice, this list of conditions and the following disclaimer in the
147d233b22SKonstantin Belousov  *    documentation and/or other materials provided with the distribution.
157d233b22SKonstantin Belousov  * 3. Neither the name of the University nor the names of its contributors
167d233b22SKonstantin Belousov  *    may be used to endorse or promote products derived from this software
177d233b22SKonstantin Belousov  *    without specific prior written permission.
187d233b22SKonstantin Belousov  *
197d233b22SKonstantin Belousov  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
207d233b22SKonstantin Belousov  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
217d233b22SKonstantin Belousov  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
227d233b22SKonstantin Belousov  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
237d233b22SKonstantin Belousov  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
247d233b22SKonstantin Belousov  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
257d233b22SKonstantin Belousov  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
267d233b22SKonstantin Belousov  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
277d233b22SKonstantin Belousov  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
287d233b22SKonstantin Belousov  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
297d233b22SKonstantin Belousov  * SUCH DAMAGE.
307d233b22SKonstantin Belousov  */
317d233b22SKonstantin Belousov 
327d233b22SKonstantin Belousov #include "namespace.h"
337d233b22SKonstantin Belousov #include <time.h>
347d233b22SKonstantin Belousov #include <unistd.h>
357d233b22SKonstantin Belousov #include "un-namespace.h"
367d233b22SKonstantin Belousov 
377d233b22SKonstantin Belousov #include "libc_private.h"
387d233b22SKonstantin Belousov 
397d233b22SKonstantin Belousov int __usleep(useconds_t);
407d233b22SKonstantin Belousov 
417d233b22SKonstantin Belousov int
427d233b22SKonstantin Belousov __usleep(useconds_t useconds)
437d233b22SKonstantin Belousov {
447d233b22SKonstantin Belousov 	struct timespec time_to_sleep;
457d233b22SKonstantin Belousov 
467d233b22SKonstantin Belousov 	time_to_sleep.tv_nsec = (useconds % 1000000) * 1000;
477d233b22SKonstantin Belousov 	time_to_sleep.tv_sec = useconds / 1000000;
48*7dd9070eSBrooks Davis 	return (INTERPOS_SYS(nanosleep, &time_to_sleep, NULL));
497d233b22SKonstantin Belousov }
507d233b22SKonstantin Belousov 
517d233b22SKonstantin Belousov __weak_reference(__usleep, usleep);
527d233b22SKonstantin Belousov __weak_reference(__usleep, _usleep);
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