1 /*- 2 * Copyright (c) 2016 Maksym Sobolyev <sobomax@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <sys/time.h> 29 #include <time.h> 30 31 #include "uc_check_time.h" 32 33 static const struct timeval max_diff_tv = {.tv_sec = 1, .tv_usec = 0}; 34 static const struct timespec max_diff_ts = {.tv_sec = 1, .tv_nsec = 0}; 35 36 int 37 uc_check_bintime(const struct bintime *mt) 38 { 39 struct timespec bt; 40 41 bintime2timespec(mt, &bt); 42 return (uc_check_timespec_real(&bt)); 43 } 44 45 int 46 uc_check_timeval(const struct timeval *bt) 47 { 48 struct timeval ct, dt; 49 50 if (gettimeofday(&ct, NULL) < 0) 51 return (-1); 52 timersub(&ct, bt, &dt); 53 if (!timercmp(&dt, &max_diff_tv, <)) 54 return (-1); 55 56 return (0); 57 } 58 59 int 60 uc_check_timespec_real(const struct timespec *bt) 61 { 62 struct timespec ct; 63 64 if (clock_gettime(CLOCK_REALTIME, &ct) < 0) 65 return (-1); 66 timespecsub(&ct, bt, &ct); 67 if (!timespeccmp(&ct, &max_diff_ts, <)) 68 return (-1); 69 70 return (0); 71 } 72 73 int 74 uc_check_timespec_mono(const struct timespec *bt) 75 { 76 struct timespec ct; 77 78 if (clock_gettime(CLOCK_MONOTONIC, &ct) < 0) 79 return (-1); 80 timespecsub(&ct, bt, &ct); 81 if (!timespeccmp(&ct, &max_diff_ts, <)) 82 return (-1); 83 84 return (0); 85 } 86