1 /*- 2 * Copyright (c) 2014-2015 François Tigeot 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 unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 #ifndef _LINUX_TIME_H_ 29 #define _LINUX_TIME_H_ 30 31 #define NSEC_PER_USEC 1000L 32 #define NSEC_PER_MSEC 1000000L 33 #define NSEC_PER_SEC 1000000000L 34 35 #define USEC_PER_MSEC 1000L 36 #define USEC_PER_SEC 1000000L 37 38 #define timespec64 timespec 39 40 #include <sys/time.h> 41 #include <sys/stdint.h> 42 43 static inline struct timeval 44 ns_to_timeval(const int64_t nsec) 45 { 46 struct timeval tv; 47 long rem; 48 49 if (nsec == 0) { 50 tv.tv_sec = 0; 51 tv.tv_usec = 0; 52 return (tv); 53 } 54 55 tv.tv_sec = nsec / NSEC_PER_SEC; 56 rem = nsec % NSEC_PER_SEC; 57 if (rem < 0) { 58 tv.tv_sec--; 59 rem += NSEC_PER_SEC; 60 } 61 tv.tv_usec = rem / 1000; 62 return (tv); 63 } 64 65 static inline int64_t 66 timeval_to_ns(const struct timeval *tv) 67 { 68 return ((int64_t)tv->tv_sec * NSEC_PER_SEC) + 69 tv->tv_usec * NSEC_PER_USEC; 70 } 71 72 #define getrawmonotonic(ts) nanouptime(ts) 73 74 static inline struct timespec 75 timespec_sub(struct timespec lhs, struct timespec rhs) 76 { 77 struct timespec ts; 78 79 timespecsub(&lhs, &rhs, &ts); 80 81 return ts; 82 } 83 84 static inline void 85 set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec) 86 { 87 /* XXX: this doesn't actually normalize anything */ 88 ts->tv_sec = sec; 89 ts->tv_nsec = nsec; 90 } 91 92 static inline int64_t 93 timespec_to_ns(const struct timespec *ts) 94 { 95 return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec); 96 } 97 98 static inline struct timespec 99 ns_to_timespec(const int64_t nsec) 100 { 101 struct timespec ts; 102 int32_t rem; 103 104 if (nsec == 0) { 105 ts.tv_sec = 0; 106 ts.tv_nsec = 0; 107 return (ts); 108 } 109 110 ts.tv_sec = nsec / NSEC_PER_SEC; 111 rem = nsec % NSEC_PER_SEC; 112 if (rem < 0) { 113 ts.tv_sec--; 114 rem += NSEC_PER_SEC; 115 } 116 ts.tv_nsec = rem; 117 return (ts); 118 } 119 120 static inline int 121 timespec_valid(const struct timespec *ts) 122 { 123 if (ts->tv_sec < 0 || ts->tv_sec > 100000000 || 124 ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000) 125 return (0); 126 return (1); 127 } 128 129 static inline unsigned long 130 get_seconds(void) 131 { 132 return time_uptime; 133 } 134 135 #endif /* _LINUX_TIME_H_ */ 136