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103 lines
2.3 KiB
103 lines
2.3 KiB
14 years ago
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/* @(#)time.h 2.9 87/01/17 SMI; from UCB 7.1 6/4/86 */
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/*
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Definitions of various structures used on UNIX for
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time-related syscalls.
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*/
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/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef _UNIX_TIME_
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#define _UNIX_TIME_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Structure returned by gettimeofday(2) system call,
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* and used in other calls.
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*/
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#ifndef __DECC
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struct timeval
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{
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long tv_sec; /* seconds */
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long tv_usec; /* and microseconds */
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};
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#else
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#if (__DECC_VER < 50200000) && (__VMS_VER < 70000000)
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struct timeval
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{
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long tv_sec; /* seconds */
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long tv_usec; /* and microseconds */
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};
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#endif /* __DECC_VER */
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#endif /* __DECC */
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struct timezone
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{
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int tz_minuteswest; /* minutes west of Greenwich */
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int tz_dsttime; /* type of dst correction */
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};
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#define DST_NONE 0 /* not on dst */
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#define DST_USA 1 /* USA style dst */
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#define DST_AUST 2 /* Australian style dst */
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#define DST_WET 3 /* Western European dst */
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#define DST_MET 4 /* Middle European dst */
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#define DST_EET 5 /* Eastern European dst */
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#define DST_CAN 6 /* Canada */
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#define DST_GB 7 /* Great Britain and Eire */
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#define DST_RUM 8 /* Rumania */
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#define DST_TUR 9 /* Turkey */
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#define DST_AUSTALT 10 /* Australian style with shift in 1986 */
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/*
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* Operations on timevals.
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*
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* NB: timercmp does not work for >= or <=.
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*/
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#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#define timercmp(tvp, uvp, cmp) \
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((tvp)->tv_sec cmp (uvp)->tv_sec || \
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(tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
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#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
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/*
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* Names of the interval timers, and structure
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* defining a timer setting.
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*/
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#define ITIMER_REAL 0
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#define ITIMER_VIRTUAL 1
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#define ITIMER_PROF 2
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#ifndef __DECC
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struct itimerval
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{
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struct timeval it_interval; /* timer interval */
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struct timeval it_value; /* current value */
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};
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#else
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#if (__DECC_VER < 50200000) && (__VMS_VER < 70000000)
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struct itimerval
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{
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struct timeval it_interval; /* timer interval */
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struct timeval it_value; /* current value */
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};
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#endif /* __DECC_VER */
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#endif /* __DECC */
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#ifndef KERNEL
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#include <time.h>
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /*!_UNIX_TIME_*/
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