mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
kfraser@localhost.localdomain
4aad88265b
Based on an original patch by Robert Kaiser. Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* -*- 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 _TIME_H_
|
|
#define _TIME_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 s64 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_SEC(_nsec) (_nsec / 1000000000ULL)
|
|
|
|
/* wall clock time */
|
|
typedef long time_t;
|
|
typedef long suseconds_t;
|
|
struct timeval {
|
|
time_t tv_sec; /* seconds */
|
|
suseconds_t tv_usec; /* microseconds */
|
|
};
|
|
|
|
struct timespec {
|
|
time_t ts_sec;
|
|
long ts_nsec;
|
|
};
|
|
|
|
|
|
/* prototypes */
|
|
void init_time(void);
|
|
s_time_t get_s_time(void);
|
|
s_time_t get_v_time(void);
|
|
u64 monotonic_clock(void);
|
|
void gettimeofday(struct timeval *tv);
|
|
void block_domain(s_time_t until);
|
|
|
|
#endif /* _TIME_H_ */
|