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author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2005-07-06 10:46:29 +0000 |
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committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2005-07-06 10:46:29 +0000 |
commit | b7d34829a343a9fcc9e5d6a64d6138bc6ce0d160 (patch) | |
tree | 55fdbbc8a6878bbfcbc00826dce1138f17d721e2 /extras/mini-os/include/time.h | |
parent | 3f54e6d5ece9b20caa0fd77d2c8342c69c6733b2 (diff) | |
download | xen-b7d34829a343a9fcc9e5d6a64d6138bc6ce0d160.tar.gz xen-b7d34829a343a9fcc9e5d6a64d6138bc6ce0d160.tar.bz2 xen-b7d34829a343a9fcc9e5d6a64d6138bc6ce0d160.zip |
Mini-os updates from Grzegorz Milos.
Diffstat (limited to 'extras/mini-os/include/time.h')
-rw-r--r-- | extras/mini-os/include/time.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/extras/mini-os/include/time.h b/extras/mini-os/include/time.h new file mode 100644 index 0000000000..40b4c212fa --- /dev/null +++ b/extras/mini-os/include/time.h @@ -0,0 +1,57 @@ +/* -*- 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) + * + * Date: Jul 2003, changesJun 2005 + * + * 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)get_s_time()) +#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 + + +/* wall clock time */ +typedef long time_t; +typedef long suseconds_t; +struct timeval { + time_t tv_sec; /* seconds */ + suseconds_t tv_usec; /* microseconds */ +}; + + +/* prototypes */ +void init_time(void); +s_time_t get_s_time(void); +s_time_t get_v_time(void); +void gettimeofday(struct timeval *tv); +void block(u32 millisecs); + +#endif /* _TIME_H_ */ |