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/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
****************************************************************************
* (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
* (C) 2005 - Grzegorz Milos - Intel Research Cambridge
****************************************************************************
*
* File: time.h
* Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
* Changes: Grzegorz Milos (gm281@cam.ac.uk)
* Robert Kaiser (kaiser@informatik.fh-wiesbaden.de)
*
* Date: Jul 2003, changes: Jun 2005, Sep 2006
*
* Environment: Xen Minimal OS
* Description: Time and timer functions
*
****************************************************************************
*/
#ifndef _MINIOS_TIME_H_
#define _MINIOS_TIME_H_
#include <mini-os/types.h>
/*
* System Time
* 64 bit value containing the nanoseconds elapsed since boot time.
* This value is adjusted by frequency drift.
* NOW() returns the current time.
* The other macros are for convenience to approximate short intervals
* of real time into system time
*/
typedef int64_t s_time_t;
#define NOW() ((s_time_t)monotonic_clock())
#define SECONDS(_s) (((s_time_t)(_s)) * 1000000000UL )
#define TENTHS(_ts) (((s_time_t)(_ts)) * 100000000UL )
#define HUNDREDTHS(_hs) (((s_time_t)(_hs)) * 10000000UL )
#define MILLISECS(_ms) (((s_time_t)(_ms)) * 1000000UL )
#define MICROSECS(_us) (((s_time_t)(_us)) * 1000UL )
#define Time_Max ((s_time_t) 0x7fffffffffffffffLL)
#define FOREVER Time_Max
#define NSEC_TO_USEC(_nsec) ((_nsec) / 1000UL)
#define NSEC_TO_MSEC(_nsec) ((_nsec) / 1000000ULL)
#define NSEC_TO_SEC(_nsec) ((_nsec) / 1000000000ULL)
/* wall clock time */
typedef long time_t;
typedef long suseconds_t;
#include <sys/time.h>
#ifdef HAVE_LIBC
#include_next <time.h>
#endif
/* prototypes */
void init_time(void);
void fini_time(void);
s_time_t get_s_time(void);
s_time_t get_v_time(void);
uint64_t monotonic_clock(void);
void block_domain(s_time_t until);
#endif /* _MINIOS_TIME_H_ */
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