time.h revision 1.1.2.2
1 1.1.2.1 riastrad /* $NetBSD: time.h,v 1.1.2.2 2013/09/08 15:38:04 riastradh Exp $ */ 2 1.1.2.1 riastrad 3 1.1.2.1 riastrad /*- 4 1.1.2.1 riastrad * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.1.2.1 riastrad * All rights reserved. 6 1.1.2.1 riastrad * 7 1.1.2.1 riastrad * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.1 riastrad * by Taylor R. Campbell. 9 1.1.2.1 riastrad * 10 1.1.2.1 riastrad * Redistribution and use in source and binary forms, with or without 11 1.1.2.1 riastrad * modification, are permitted provided that the following conditions 12 1.1.2.1 riastrad * are met: 13 1.1.2.1 riastrad * 1. Redistributions of source code must retain the above copyright 14 1.1.2.1 riastrad * notice, this list of conditions and the following disclaimer. 15 1.1.2.1 riastrad * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.1 riastrad * notice, this list of conditions and the following disclaimer in the 17 1.1.2.1 riastrad * documentation and/or other materials provided with the distribution. 18 1.1.2.1 riastrad * 19 1.1.2.1 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.1 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.1 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.1 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.1 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.1 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.1 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.1 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.1 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.1 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.1 riastrad * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.1 riastrad */ 31 1.1.2.1 riastrad 32 1.1.2.1 riastrad #ifndef _LINUX_TIME_H_ 33 1.1.2.1 riastrad #define _LINUX_TIME_H_ 34 1.1.2.1 riastrad 35 1.1.2.1 riastrad #include <sys/time.h> 36 1.1.2.1 riastrad 37 1.1.2.1 riastrad /* 38 1.1.2.1 riastrad * XXX get_seconds as implemented by Linux is a Y2038 bug waiting to 39 1.1.2.1 riastrad * happen on 32-bit systems because it returns unsigned long. Some 40 1.1.2.1 riastrad * callers in Linux (implicitly) convert the result to time_t, though. 41 1.1.2.1 riastrad * We'll pretend get_seconds returns time_t and make sure all our 42 1.1.2.1 riastrad * callers treat it as if it did. 43 1.1.2.1 riastrad */ 44 1.1.2.1 riastrad 45 1.1.2.1 riastrad static inline time_t 46 1.1.2.1 riastrad get_seconds(void) 47 1.1.2.1 riastrad { 48 1.1.2.1 riastrad return time_second; 49 1.1.2.1 riastrad } 50 1.1.2.1 riastrad 51 1.1.2.2 riastrad static inline void 52 1.1.2.2 riastrad getrawmonotonic(struct timespec *ts) 53 1.1.2.2 riastrad { 54 1.1.2.2 riastrad getnanouptime(ts); 55 1.1.2.2 riastrad } 56 1.1.2.2 riastrad 57 1.1.2.2 riastrad static inline bool 58 1.1.2.2 riastrad timespec_valid(const struct timespec *ts) 59 1.1.2.2 riastrad { 60 1.1.2.2 riastrad if (ts->tv_sec < 0) 61 1.1.2.2 riastrad return false; 62 1.1.2.2 riastrad if (1000000000L <= ts->tv_nsec) 63 1.1.2.2 riastrad return false; 64 1.1.2.2 riastrad return true; 65 1.1.2.2 riastrad } 66 1.1.2.2 riastrad 67 1.1.2.2 riastrad static inline struct timespec 68 1.1.2.2 riastrad ns_to_timespec(const int64_t nsec) 69 1.1.2.2 riastrad { 70 1.1.2.2 riastrad struct timespec ts; 71 1.1.2.2 riastrad 72 1.1.2.2 riastrad ts.tv_sec = (nsec / 1000000000L); 73 1.1.2.2 riastrad ts.tv_nsec = (nsec % 1000000000L); 74 1.1.2.2 riastrad if (ts.tv_nsec < 0) { 75 1.1.2.2 riastrad ts.tv_sec -= 1; 76 1.1.2.2 riastrad ts.tv_nsec += 1000000000L; 77 1.1.2.2 riastrad } 78 1.1.2.2 riastrad 79 1.1.2.2 riastrad return ts; 80 1.1.2.2 riastrad } 81 1.1.2.2 riastrad 82 1.1.2.2 riastrad static inline int64_t 83 1.1.2.2 riastrad timespec_to_ns(const struct timespec *ts) 84 1.1.2.2 riastrad { 85 1.1.2.2 riastrad return (((int64_t)ts->tv_sec * 1000000000LL) + ts->tv_nsec); 86 1.1.2.2 riastrad } 87 1.1.2.2 riastrad 88 1.1.2.2 riastrad static inline struct timespec 89 1.1.2.2 riastrad timespec_sub(struct timespec a, struct timespec b) 90 1.1.2.2 riastrad { 91 1.1.2.2 riastrad struct timespec d; 92 1.1.2.2 riastrad 93 1.1.2.2 riastrad timespecsub(&a, &b, &d); 94 1.1.2.2 riastrad 95 1.1.2.2 riastrad return d; 96 1.1.2.2 riastrad } 97 1.1.2.2 riastrad 98 1.1.2.2 riastrad static inline void 99 1.1.2.2 riastrad set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec) 100 1.1.2.2 riastrad { 101 1.1.2.2 riastrad while (nsec >= 1000000000L) { 102 1.1.2.2 riastrad nsec -= 1000000000L; 103 1.1.2.2 riastrad sec += 1; 104 1.1.2.2 riastrad } 105 1.1.2.2 riastrad while (nsec < 0) { 106 1.1.2.2 riastrad nsec += 1000000000L; 107 1.1.2.2 riastrad sec -= 1; 108 1.1.2.2 riastrad } 109 1.1.2.2 riastrad ts->tv_sec = sec; 110 1.1.2.2 riastrad ts->tv_nsec = nsec; 111 1.1.2.2 riastrad } 112 1.1.2.2 riastrad 113 1.1.2.1 riastrad #endif /* _LINUX_TIME_H_ */ 114
Indexes created Thu Oct 02 14:10:14 GMT 2025