185 строки
5.2 KiB
C
185 строки
5.2 KiB
C
/*
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*Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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*Copyright (c) 2004-2014 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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*Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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*Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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*$COPYRIGHT$
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*
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*Additional copyrights may follow
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*
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*$HEADER$
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*/
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#ifndef OPAL_TIME_H
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#define OPAL_TIME_H
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#include "opal_config.h"
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#ifndef OPAL_WIN_COMPAT_H
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#error This file is supposed to be included only from win_compat.h
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#endif /* OPAL_WIN_COMPAT_H */
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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 TIMEVAL_TO_TIMESPEC(tv, ts) \
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(ts)->tv_sec = (tv)->tv_sec; \
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(ts)->tv_nsec = (tv)->tv_usec * 1000;
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#define TIMESPEC_TO_TIMEVAL(tv, ts) \
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(tv)->tv_sec = (ts)->tv_sec; \
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(tv)->tv_usec = (ts)->tv_nsec / 1000;
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/* some more utility functions */
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/* Operations on timevals. */
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#ifndef timerclear
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#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
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#endif
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#ifndef timerisset
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#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#endif
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#ifndef timercmp
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#define timercmp(tvp, uvp, cmp) \
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(((tvp)->tv_sec == (uvp)->tv_sec) ? \
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((tvp)->tv_usec cmp (uvp)->tv_usec) : \
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((tvp)->tv_sec cmp (uvp)->tv_sec))
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#endif
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#ifndef timeradd
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#define timeradd(tvp, uvp, vvp) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
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if ((vvp)->tv_usec >= 1000000) { \
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(vvp)->tv_sec++; \
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(vvp)->tv_usec -= 1000000; \
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} \
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} while (0)
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#endif
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#ifndef timersub
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#define timersub(tvp, uvp, vvp) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
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if ((vvp)->tv_usec < 0) { \
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(vvp)->tv_sec--; \
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(vvp)->tv_usec += 1000000; \
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} \
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} while (0)
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#endif
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/* Operations on timespecs. */
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#ifndef timespecclear
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#define timespecclear(tsp) (tsp)->tv_sec = (tsp)->tv_nsec = 0
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#endif
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#ifndef timespecisset
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#define timespecisset(tsp) ((tsp)->tv_sec || (tsp)->tv_nsec)
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#endif
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#ifndef timespeccmp
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#define timespeccmp(tsp, usp, cmp) \
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(((tsp)->tv_sec == (usp)->tv_sec) ? \
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((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
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((tsp)->tv_sec cmp (usp)->tv_sec))
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#endif
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#ifndef timespecadd
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#define timespecadd(tsp, usp, vsp) \
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do { \
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(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \
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(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \
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if ((vsp)->tv_nsec >= 1000000000L) { \
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(vsp)->tv_sec++; \
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(vsp)->tv_nsec -= 1000000000L; \
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} \
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} while (0)
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#endif
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#ifndef timespecsub
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#define timespecsub(tsp, usp, vsp) \
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do { \
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(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
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(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
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if ((vsp)->tv_nsec < 0) { \
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(vsp)->tv_sec--; \
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(vsp)->tv_nsec += 1000000000L; \
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} \
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} while (0)
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#endif
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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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struct itimerval {
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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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/*
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* Getkerninfo clock information structure
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*/
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struct clockinfo {
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int hz; /* clock frequency */
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int tick; /* micro-seconds per hz tick */
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int tickadj; /* clock skew rate for adjtime() */
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int stathz; /* statistics clock frequency */
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int profhz; /* profiling clock frequency */
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};
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#define CLOCK_REALTIME 0
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#define CLOCK_VIRTUAL 1
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#define CLOCK_PROF 2
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#define TIMER_RELTIME 0x0 /* relative timer */
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#define TIMER_ABSTIME 0x1 /* absolute timer */
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#ifndef OPAL_TIMESPEC
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#define OPAL_TIMESPEC
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struct timespec
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{
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long tv_sec;
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long tv_nsec;
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};
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#endif
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/*
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NOTE: The use of timezone is obsolete even in linux and my gettimeofday
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function is not going to support it either. So, please be aware of the
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fact that if you expect to pass anything here, then you are DEAD :-D */
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struct timezone
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{
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int tz_minuteswest;
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int tz_dsttime;
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};
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BEGIN_C_DECLS
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OPAL_DECLSPEC int gettimeofday (struct timeval *tv, struct timezone *tz);
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END_C_DECLS
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#endif /* OPAL_TIME_H */
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