time.h revision 1.2.4.2
1 1.2.4.2 rmind /* $NetBSD: time.h,v 1.2.4.2 2014/05/18 17:46:01 rmind Exp $ */ 2 1.2.4.2 rmind 3 1.2.4.2 rmind /*- 4 1.2.4.2 rmind * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.2.4.2 rmind * All rights reserved. 6 1.2.4.2 rmind * 7 1.2.4.2 rmind * This code is derived from software contributed to The NetBSD Foundation 8 1.2.4.2 rmind * by Taylor R. Campbell. 9 1.2.4.2 rmind * 10 1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 11 1.2.4.2 rmind * modification, are permitted provided that the following conditions 12 1.2.4.2 rmind * are met: 13 1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 14 1.2.4.2 rmind * notice, this list of conditions and the following disclaimer. 15 1.2.4.2 rmind * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.4.2 rmind * notice, this list of conditions and the following disclaimer in the 17 1.2.4.2 rmind * documentation and/or other materials provided with the distribution. 18 1.2.4.2 rmind * 19 1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.4.2 rmind * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.4.2 rmind * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.4.2 rmind * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.4.2 rmind * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.4.2 rmind * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.4.2 rmind * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.4.2 rmind * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.4.2 rmind * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.4.2 rmind * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.4.2 rmind * POSSIBILITY OF SUCH DAMAGE. 30 1.2.4.2 rmind */ 31 1.2.4.2 rmind 32 1.2.4.2 rmind #ifndef _LINUX_TIME_H_ 33 1.2.4.2 rmind #define _LINUX_TIME_H_ 34 1.2.4.2 rmind 35 1.2.4.2 rmind #include <sys/time.h> 36 1.2.4.2 rmind 37 1.2.4.2 rmind /* 38 1.2.4.2 rmind * XXX get_seconds as implemented by Linux is a Y2038 bug waiting to 39 1.2.4.2 rmind * happen on 32-bit systems because it returns unsigned long. Some 40 1.2.4.2 rmind * callers in Linux (implicitly) convert the result to time_t, though. 41 1.2.4.2 rmind * We'll pretend get_seconds returns time_t and make sure all our 42 1.2.4.2 rmind * callers treat it as if it did. 43 1.2.4.2 rmind */ 44 1.2.4.2 rmind 45 1.2.4.2 rmind static inline time_t 46 1.2.4.2 rmind get_seconds(void) 47 1.2.4.2 rmind { 48 1.2.4.2 rmind return time_second; 49 1.2.4.2 rmind } 50 1.2.4.2 rmind 51 1.2.4.2 rmind static inline void 52 1.2.4.2 rmind getrawmonotonic(struct timespec *ts) 53 1.2.4.2 rmind { 54 1.2.4.2 rmind getnanouptime(ts); 55 1.2.4.2 rmind } 56 1.2.4.2 rmind 57 1.2.4.2 rmind static inline bool 58 1.2.4.2 rmind timespec_valid(const struct timespec *ts) 59 1.2.4.2 rmind { 60 1.2.4.2 rmind if (ts->tv_sec < 0) 61 1.2.4.2 rmind return false; 62 1.2.4.2 rmind if (1000000000L <= ts->tv_nsec) 63 1.2.4.2 rmind return false; 64 1.2.4.2 rmind return true; 65 1.2.4.2 rmind } 66 1.2.4.2 rmind 67 1.2.4.2 rmind static inline struct timespec 68 1.2.4.2 rmind ns_to_timespec(const int64_t nsec) 69 1.2.4.2 rmind { 70 1.2.4.2 rmind struct timespec ts; 71 1.2.4.2 rmind 72 1.2.4.2 rmind ts.tv_sec = (nsec / 1000000000L); 73 1.2.4.2 rmind ts.tv_nsec = (nsec % 1000000000L); 74 1.2.4.2 rmind if (ts.tv_nsec < 0) { 75 1.2.4.2 rmind ts.tv_sec -= 1; 76 1.2.4.2 rmind ts.tv_nsec += 1000000000L; 77 1.2.4.2 rmind } 78 1.2.4.2 rmind 79 1.2.4.2 rmind return ts; 80 1.2.4.2 rmind } 81 1.2.4.2 rmind 82 1.2.4.2 rmind static inline int64_t 83 1.2.4.2 rmind timespec_to_ns(const struct timespec *ts) 84 1.2.4.2 rmind { 85 1.2.4.2 rmind return (((int64_t)ts->tv_sec * 1000000000LL) + ts->tv_nsec); 86 1.2.4.2 rmind } 87 1.2.4.2 rmind 88 1.2.4.2 rmind static inline struct timespec 89 1.2.4.2 rmind timespec_sub(struct timespec a, struct timespec b) 90 1.2.4.2 rmind { 91 1.2.4.2 rmind struct timespec d; 92 1.2.4.2 rmind 93 1.2.4.2 rmind timespecsub(&a, &b, &d); 94 1.2.4.2 rmind 95 1.2.4.2 rmind return d; 96 1.2.4.2 rmind } 97 1.2.4.2 rmind 98 1.2.4.2 rmind static inline void 99 1.2.4.2 rmind set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec) 100 1.2.4.2 rmind { 101 1.2.4.2 rmind while (nsec >= 1000000000L) { 102 1.2.4.2 rmind nsec -= 1000000000L; 103 1.2.4.2 rmind sec += 1; 104 1.2.4.2 rmind } 105 1.2.4.2 rmind while (nsec < 0) { 106 1.2.4.2 rmind nsec += 1000000000L; 107 1.2.4.2 rmind sec -= 1; 108 1.2.4.2 rmind } 109 1.2.4.2 rmind ts->tv_sec = sec; 110 1.2.4.2 rmind ts->tv_nsec = nsec; 111 1.2.4.2 rmind } 112 1.2.4.2 rmind 113 1.2.4.2 rmind #endif /* _LINUX_TIME_H_ */ 114
Indexes created Thu Oct 02 14:10:14 GMT 2025