1 /* 2 * Copyright (c) 1982, 1986 The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS `AS IS' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)time.h 7.6 (Berkeley) 2/22/91 34 */ 35 36 /* messed about with substantially by @feilipu October 2019 */ 37 38 39 // automatically generated by m4 from headers in proto subdir 40 41 42 #ifndef _SYS_TIME_H_ 43 #define _SYS_TIME_H_ 44 45 #include <sys/types.h> 46 47 #ifdef __cplusplus 48 extern "C" { 49 #endif 50 51 /* 52 * Structure returned by clock_gettime() system call 53 * and used in other calls. 54 */ 55 56 struct timespec { 57 time_t tv_sec; /* seconds */ 58 nseconds_t tv_nsec; /* and nanoseconds */ 59 }; 60 61 enum clockid_t { 62 CLOCK_REALTIME, 63 CLOCK_MONOTONIC, 64 CLOCK_PROCESS_CPUTIME_ID, 65 CLOCK_THREAD_CPUTIME_ID, 66 CLOCK_MONOTONIC_RAW, 67 CLOCK_REALTIME_COARSE, 68 CLOCK_MONOTONIC_COARSE 69 }; 70 71 /* 72 * Convenience macros for operations on timevals 73 */ 74 75 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 76 #define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 77 78 #define timeradd(a, b, result) \ 79 do { \ 80 (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ 81 (result)->tv_nsec = (a)->tv_nsec + (b)->tv_nsec; \ 82 if ((result)->tv_nsec >= 1000000000) \ 83 { \ 84 ++(result)->tv_sec; \ 85 (result)->tv_nsec -= 1000000000; \ 86 } \ 87 } while (0) 88 89 #define timersub(a, b, result) \ 90 do { \ 91 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ 92 (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec; \ 93 if ((a)->tv_nsec < (b)->tv_nsec) \ 94 { \ 95 --(result)->tv_sec; \ 96 (result)->tv_nsec += 1000000000; \ 97 } \ 98 } while (0) 99 100 /* 101 * We are working in nano seconds, so divide by ONE_BILLION 102 */ 103 104 #ifndef ONE_BILLION 105 #define ONE_BILLION ((nseconds_t)1000000000) 106 #endif 107 108 extern int __LIB__ clock_getres(enum clockid_t clock_id,struct timespec *res) __smallc; 109 extern int __LIB__ clock_getres_callee(enum clockid_t clock_id,struct timespec *res) __smallc __z88dk_callee; 110 #define clock_getres(a,b) clock_getres_callee(a,b) 111 112 113 extern int __LIB__ clock_gettime(enum clockid_t clock_id,struct timespec *tp) __smallc; 114 extern int __LIB__ clock_gettime_callee(enum clockid_t clock_id,struct timespec *tp) __smallc __z88dk_callee; 115 #define clock_gettime(a,b) clock_gettime_callee(a,b) 116 117 118 extern int __LIB__ clock_settime(enum clockid_t clock_id,const struct timespec *tp) __smallc; 119 extern int __LIB__ clock_settime_callee(enum clockid_t clock_id,const struct timespec *tp) __smallc __z88dk_callee; 120 #define clock_settime(a,b) clock_settime_callee(a,b) 121 122 123 124 #ifdef __cplusplus 125 } 126 #endif 127 #endif /* !_SYS_TIME_H_ */ 128