usleep.c revision 30443
1266423Sjfv/* 2266423Sjfv * Copyright (c) 1989, 1993 3279033Sjfv * The Regents of the University of California. All rights reserved. 4266423Sjfv * 5266423Sjfv * Redistribution and use in source and binary forms, with or without 6266423Sjfv * modification, are permitted provided that the following conditions 7266423Sjfv * are met: 8266423Sjfv * 1. Redistributions of source code must retain the above copyright 9266423Sjfv * notice, this list of conditions and the following disclaimer. 10266423Sjfv * 2. Redistributions in binary form must reproduce the above copyright 11266423Sjfv * notice, this list of conditions and the following disclaimer in the 12266423Sjfv * documentation and/or other materials provided with the distribution. 13266423Sjfv * 3. All advertising materials mentioning features or use of this software 14266423Sjfv * must display the following acknowledgement: 15266423Sjfv * This product includes software developed by the University of 16266423Sjfv * California, Berkeley and its contributors. 17266423Sjfv * 4. Neither the name of the University nor the names of its contributors 18266423Sjfv * may be used to endorse or promote products derived from this software 19266423Sjfv * without specific prior written permission. 20266423Sjfv * 21266423Sjfv * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22266423Sjfv * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23266423Sjfv * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24266423Sjfv * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25266423Sjfv * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26266423Sjfv * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27266423Sjfv * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28266423Sjfv * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29266423Sjfv * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30266423Sjfv * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31266423Sjfv * SUCH DAMAGE. 32266423Sjfv */ 33266423Sjfv 34266423Sjfv#if defined(LIBC_SCCS) && !defined(lint) 35266423Sjfvstatic char sccsid[] = "@(#)usleep.c 8.1 (Berkeley) 6/4/93"; 36266423Sjfv#endif /* LIBC_SCCS and not lint */ 37266423Sjfv 38266423Sjfv#include <errno.h> 39266423Sjfv#include <sys/time.h> 40266423Sjfv#include <signal.h> 41266423Sjfv#include <unistd.h> 42266423Sjfv 43266423Sjfvvoid 44270346Sjfvusleep(useconds) 45299549Serj unsigned int useconds; 46266423Sjfv{ 47266423Sjfv struct timespec time_to_sleep; 48266423Sjfv 49266423Sjfv if (useconds) { 50266423Sjfv time_to_sleep.tv_nsec = (useconds % 1000000) * 1000; 51266423Sjfv time_to_sleep.tv_sec = useconds / 1000000; 52266423Sjfv (void)nanosleep(&time_to_sleep, NULL); 53266423Sjfv } 54266423Sjfv} 55266423Sjfv