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165 lines
3.6 KiB
C
165 lines
3.6 KiB
C
/* @(#)time.h 1.20 13/10/01 Copyright 1996-2013 J. Schilling */
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/*
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* Generic header for users of time(), gettimeofday() ...
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*
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* It includes definitions for time_t, struct timeval, ...
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*
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* Copyright (c) 1996-2013 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_TIME_H
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#define _SCHILY_TIME_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifndef _SCHILY_TYPES_H
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#include <schily/types.h> /* Needed for time_t */
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#endif
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#ifdef TIME_WITH_SYS_TIME
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# ifndef _INCL_SYS_TIME_H
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# include <sys/time.h>
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# define _INCL_SYS_TIME_H
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# endif
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# ifndef _INCL_TIME_H
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# include <time.h>
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# define _INCL_TIME_H
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# endif
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#else
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#ifdef HAVE_SYS_TIME_H
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# ifndef _INCL_SYS_TIME_H
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# include <sys/time.h>
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# define _INCL_SYS_TIME_H
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# endif
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#else
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# ifndef _INCL_TIME_H
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# include <time.h>
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# define _INCL_TIME_H
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# endif
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef timerclear
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/*
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* With MSVC timerclear / struct timeval present in case that
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* winsock2.h has been included before.
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*/
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#undef HAVE_STRUCT_TIMEVAL
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#define HAVE_STRUCT_TIMEVAL 1
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#endif
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#ifndef HAVE_STRUCT_TIMEVAL
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struct timeval {
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long tv_sec;
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long tv_usec;
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};
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#endif
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#ifndef HAVE_STRUCT_TIMEZONE
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struct timezone {
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int tz_minuteswest;
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int tz_dsttime;
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};
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#endif
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#ifndef HAVE_STRUCT_TIMESPEC
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struct timespec {
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time_t tv_sec;
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long tv_nsec;
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};
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#endif
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#undef timerclear
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#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
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#undef timerfix
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#define timerfix1(tvp) while ((tvp)->tv_usec < 0) { \
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(tvp)->tv_sec--; \
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(tvp)->tv_usec += 1000000; \
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}
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#define timerfix2(tvp) while ((tvp)->tv_usec > 1000000) { \
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(tvp)->tv_sec++; \
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(tvp)->tv_usec -= 1000000; \
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}
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#define timerfix(tvp) do { timerfix1(tvp); timerfix2(tvp); } while (0)
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/*
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* timersub() and timeradd() are defined on FreeBSD with a different
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* interface (3 parameters).
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*/
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#undef timersub
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#define timersub(tvp1, tvp2) do { \
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(tvp1)->tv_sec -= (tvp2)->tv_sec; \
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(tvp1)->tv_usec -= (tvp2)->tv_usec; \
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timerfix1(tvp1); timerfix2(tvp1); \
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} while (0)
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#undef timeradd
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#define timeradd(tvp1, tvp2) do { \
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(tvp1)->tv_sec += (tvp2)->tv_sec; \
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(tvp1)->tv_usec += (tvp2)->tv_usec; \
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timerfix1(tvp1); timerfix2(tvp1); \
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} while (0)
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#undef timespecclear
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#define timespecclear(tsp) (tsp)->tv_sec = (tsp)->tv_nsec = 0
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#undef timespecfix
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#define timespecfix1(tsp) while ((tsp)->tv_nsec < 0) { \
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(tsp)->tv_sec--; \
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(tsp)->tv_nsec += 1000000000; \
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}
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#define timespecfix2(tsp) while ((tsp)->tv_nsec > 1000000000) { \
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(tsp)->tv_sec++; \
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(tsp)->tv_nsec -= 1000000000; \
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}
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#define timespecfix(tsp) do { timespecfix1(tsp); timespecfix2(tsp); } while (0)
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#undef timespecsub
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#define timespecsub(tsp1, tsp2) do { \
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(tsp1)->tv_sec -= (tsp2)->tv_sec; \
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(tsp1)->tv_nsec -= (tsp2)->tv_nsec; \
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timespecfix1(tsp1); timespecfix2(tsp1); \
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} while (0)
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#undef timespecadd
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#define timespecadd(tsp1, tsp2) do { \
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(tsp1)->tv_sec += (tsp2)->tv_sec; \
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(tsp1)->tv_nsec += (tsp2)->tv_nsec; \
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timespecfix1(tsp1); timespecfix2(tsp1); \
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} while (0)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SCHILY_TIME_H */
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