1 /* 2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@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 AUTHORS 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 AUTHORS 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 #ifndef _OPENSOLARIS_SYS_TIME_H_ 28 #define _OPENSOLARIS_SYS_TIME_H_ 29 #pragma once 30 #include_next <sys/time.h> 31 #include <sys/debug.h> 32 #ifndef _SYS_KERNEL_H_ 33 extern int hz; 34 #endif 35 36 #define SEC 1 37 #define MILLISEC 1000UL 38 #define MICROSEC 1000000UL 39 #define NANOSEC 1000000000UL 40 #define TIME_MAX LLONG_MAX 41 42 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC)) 43 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC)) 44 45 #define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC)) 46 #define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC)) 47 48 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC)) 49 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC)) 50 51 typedef longlong_t hrtime_t; 52 53 #if defined(__i386__) || defined(__powerpc__) 54 #define TIMESPEC_OVERFLOW(ts) \ 55 ((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX) 56 #else 57 #define TIMESPEC_OVERFLOW(ts) \ 58 ((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX) 59 #endif 60 61 #define SEC_TO_TICK(sec) ((sec) * hz) 62 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 63 64 static __inline hrtime_t 65 gethrtime(void) 66 { 67 struct timespec ts; 68 hrtime_t nsec; 69 70 nanouptime(&ts); 71 nsec = ((hrtime_t)ts.tv_sec * NANOSEC) + ts.tv_nsec; 72 return (nsec); 73 } 74 75 #define gethrestime_sec() (time_second) 76 #define gethrestime(ts) getnanotime(ts) 77 #define gethrtime_waitfree() gethrtime() 78 79 extern int nsec_per_tick; /* nanoseconds per clock tick */ 80 81 #define ddi_get_lbolt64() \ 82 (int64_t)(((getsbinuptime() >> 16) * hz) >> 16) 83 #define ddi_get_lbolt() (clock_t)ddi_get_lbolt64() 84 85 #else 86 87 static __inline hrtime_t 88 gethrtime(void) 89 { 90 struct timespec ts; 91 clock_gettime(CLOCK_UPTIME, &ts); 92 return (((uint64_t)ts.tv_sec) * NANOSEC + ts.tv_nsec); 93 } 94 #endif /* !_OPENSOLARIS_SYS_TIME_H_ */ 95