90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/**
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* =========================================================================
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* File : wtime.h
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* Project : 0 A.D.
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* Description : emulate POSIX high resolution timer on Windows.
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*
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* @author Jan.Wassenberg@stud.uni-karlsruhe.de
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* =========================================================================
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*/
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/*
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* Copyright (c) 2004 Jan Wassenberg
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*
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* Redistribution and/or modification are also permitted under the
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* terms of the GNU General Public License as published by the
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* Free Software Foundation (version 2 or later, at your option).
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef WTIME_H__
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#define WTIME_H__
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// advertise support for the timer routines we emulate; used by timer.cpp.
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// #undef to avoid macro redefinition warning.
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#undef HAVE_CLOCK_GETTIME
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#define HAVE_CLOCK_GETTIME 1
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#undef HAVE_GETTIMEOFDAY
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#define HAVE_GETTIMEOFDAY 1
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//
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// <sys/types.h>
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//
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typedef unsigned long useconds_t;
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typedef long suseconds_t;
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//
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// <unistd.h>
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//
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extern unsigned int sleep(unsigned int sec);
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extern int usleep(useconds_t us);
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//
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// <time.h>
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//
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typedef enum
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{
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CLOCK_REALTIME
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}
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clockid_t;
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// BSD gettimeofday
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struct timeval
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{
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time_t tv_sec;
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suseconds_t tv_usec;
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};
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// POSIX realtime clock_*
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struct timespec
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{
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time_t tv_sec;
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long tv_nsec;
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};
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extern int gettimeofday(struct timeval* tv, void* tzp);
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extern int nanosleep(const struct timespec* rqtp, struct timespec* rmtp);
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extern int clock_gettime(clockid_t clock, struct timespec* ts);
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extern int clock_getres(clockid_t clock, struct timespec* res);
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// HACK: on Windows, the HRT makes its final implementation choice
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// in the first calibrate call where cpu_freq is available.
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// provide a routine that makes the choice when called,
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// so app code isn't surprised by a timer change, although the HRT
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// does try to keep the timer continuous.
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extern void wtime_reset_impl(void);
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#endif // #ifndef WTIME_H__
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