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 * $FreeBSD$ 27 */ 28 29 #ifndef _OPENSOLARIS_SYS_TIME_H_ 30 #define _OPENSOLARIS_SYS_TIME_H_ 31 #pragma once 32 #include_next <sys/time.h> 33 #include <sys/debug.h> 34 #ifndef _SYS_KERNEL_H_ 35 extern int hz; 36 #endif 37 38 #define SEC 1 39 #define MILLISEC 1000UL 40 #define MICROSEC 1000000UL 41 #define NANOSEC 1000000000UL 42 #define TIME_MAX LLONG_MAX 43 44 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC)) 45 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC)) 46 47 #define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC)) 48 #define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC)) 49 50 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC)) 51 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC)) 52 53 typedef longlong_t hrtime_t; 54 55 #if defined(__i386__) || defined(__powerpc__) 56 #define TIMESPEC_OVERFLOW(ts) \ 57 ((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX) 58 #else 59 #define TIMESPEC_OVERFLOW(ts) \ 60 ((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX) 61 #endif 62 63 #define SEC_TO_TICK(sec) ((sec) * hz) 64 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 65 66 static __inline hrtime_t 67 gethrtime(void) 68 { 69 struct timespec ts; 70 hrtime_t nsec; 71 72 nanouptime(&ts); 73 nsec = ((hrtime_t)ts.tv_sec * NANOSEC) + ts.tv_nsec; 74 return (nsec); 75 } 76 77 #define gethrestime_sec() (time_second) 78 #define gethrestime(ts) getnanotime(ts) 79 #define gethrtime_waitfree() gethrtime() 80 81 extern int nsec_per_tick; /* nanoseconds per clock tick */ 82 83 #define ddi_get_lbolt64() \ 84 (int64_t)(((getsbinuptime() >> 16) * hz) >> 16) 85 #define ddi_get_lbolt() (clock_t)ddi_get_lbolt64() 86 87 #else 88 89 static __inline hrtime_t 90 gethrtime(void) 91 { 92 struct timespec ts; 93 clock_gettime(CLOCK_UPTIME, &ts); 94 return (((u_int64_t)ts.tv_sec) * NANOSEC + ts.tv_nsec); 95 } 96 #endif /* !_OPENSOLARIS_SYS_TIME_H_ */ 97