// Windows-specific high resolution timer
// Copyright (c) 2004 Jan Wassenberg
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// Contact info:
//   Jan.Wassenberg@stud.uni-karlsruhe.de
//   http://www.stud.uni-karlsruhe.de/~urkt/

#ifndef WTIME_H__
#define WTIME_H__


#define HAVE_CLOCK_GETTIME
#define HAVE_GETTIMEOFDAY


//
// <sys/types.h>
//

typedef unsigned long useconds_t;
typedef long suseconds_t;


//
// <unistd.h>
//

extern unsigned int sleep(unsigned int sec);
extern int usleep(useconds_t us);


//
// <time.h>
//

typedef enum
{
	CLOCK_REALTIME
}
clockid_t;

// BSD gettimeofday
struct timeval
{
	time_t tv_sec;
	suseconds_t tv_usec;
};

// POSIX realtime clock_*
struct timespec
{
	time_t tv_sec;
	long   tv_nsec;
};

extern int gettimeofday(struct timeval* tv, void* tzp);

extern int nanosleep(const struct timespec* rqtp, struct timespec* rmtp);
extern int clock_gettime(clockid_t clock, struct timespec* ts);
extern int clock_getres(clockid_t clock, struct timespec* res);


// HACK: if _WIN32, the HRT makes its final implementation choice
// in the first calibrate call where cpu_freq and cpu_caps are
// available. provide a routine that makes the choice when called,
// so app code isn't surprised by a timer change, although the HRT
// does try to keep the timer continuous.
extern void wtime_reset_impl();


#endif	// #ifndef WTIME_H__