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/* Project: OSLib
* Description: The OS Construction Kit
* Date: 1.6.2000
* Idea by: Luca Abeni & Gerardo Lamastra
*
* OSLib is an SO project aimed at developing a common, easy-to-use
* low-level infrastructure for developing OS kernels and Embedded
* Applications; it partially derives from the HARTIK project but it
* currently is independently developed.
*
* OSLib is distributed under GPL License, and some of its code has
* been derived from the Linux kernel source; also some important
* ideas come from studying the DJGPP go32 extender.
*
* We acknowledge the Linux Community, Free Software Foundation,
* D.J. Delorie and all the other developers who believe in the
* freedom of software and ideas.
*
* For legalese, check out the included GPL license.
*/
/* Inline functions for managing timespec structures.
All timespec values are pointers!!!
This file defines these functions:
TIMESPEC2NANOSEC(t)
converts a timespec value to a nanosec value, and return
it, no checks
TIMESPEC2USEC(t)
converts a timespec value to a nanosec value, and return
it, no checks
NULL_TIMESPEC(t)
the timespec value is set to the Epoch (=0)
ADDNANO2TIMESPEC(n, t)
t = t + n
ADDUSEC2TIMESPEC(m, t)
t = t + m
SUBTIMESPEC(s1, s2, d) Works well only if s1 >= s2
d = s1 - s2
ADDTIMESPEC(s1, s2, d)
d = s1 + s2
TIMESPEC_A_LT_B(a,b)
a < b
TIMESPEC_A_GT_B(a,b)
a > b
TIMESPEC_A_EQ_B(a,b)
a == b
TIMESPEC_A_NEQ_B(a,b)
a != b
TIMESPEC_ASSIGN(t1,t2)
t1 = t2 */
#ifndef __LL_SYS_LL_TIME_H__
#define __LL_SYS_LL_TIME_H__
#include <ll/i386/defs.h>
BEGIN_DEF
struct timespec {
long tv_sec; /* Seconds */
long tv_nsec; /* Nanoseconds */
};
/*
* these macros come from the Utah Flux oskit...
*/
#define TIMESPEC2NANOSEC(t) ((t)->tv_sec * 1000000000 + (t)->tv_nsec)
#define TIMESPEC2USEC(t) ((t)->tv_sec * 1000000 + (t)->tv_nsec / 1000)
#define NULL_TIMESPEC(t) ((t)->tv_sec = (t)->tv_nsec = 0)
#define ADDNANO2TIMESPEC(n, t) ((t)->tv_nsec += (n), \
(t)->tv_sec += (t)->tv_nsec / 1000000000, \
(t)->tv_nsec %= 1000000000)
#define SUBTIMESPEC(s1, s2, d) \
((d)->tv_nsec = ((s1)->tv_nsec >= (s2)->tv_nsec) ? \
(((d)->tv_sec = (s1)->tv_sec - (s2)->tv_sec), \
(s1)->tv_nsec - (s2)->tv_nsec) \
: \
(((d)->tv_sec = (s1)->tv_sec - (s2)->tv_sec - 1), \
(1000000000 + (s1)->tv_nsec - (s2)->tv_nsec)))
/*
* ...and these not!
*/
extern __inline__ void ADDTIMESPEC(const struct timespec *s1,
const struct timespec *s2,
struct timespec *d)
{
d->tv_sec = s1->tv_sec + s2->tv_sec;
d->tv_nsec = s1->tv_nsec + s2->tv_nsec;
if (d->tv_nsec < 0) {
d->tv_sec--;
d->tv_nsec += 1000000000;
} else if (d->tv_nsec >= 1000000000) {
d->tv_sec++;
d->tv_nsec -= 1000000000;
}
}
#define ADDUSEC2TIMESPEC(m, t) ((t)->tv_nsec += (m%1000000)*1000, \
(t)->tv_sec += ((t)->tv_nsec / 1000000000) + (m/1000000), \
(t)->tv_nsec %= 1000000000)
#define TIMESPEC_A_LT_B(a,b) \
( \
((a)->tv_sec < (b)->tv_sec) || \
((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec < (b)->tv_nsec) \
)
#define TIMESPEC_A_GT_B(a,b) \
( \
((a)->tv_sec > (b)->tv_sec) || \
((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec > (b)->tv_nsec) \
)
#define TIMESPEC_A_EQ_B(a,b) \
((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec == (b)->tv_nsec)
#define TIMESPEC_A_NEQ_B(a,b) \
((a)->tv_sec != (b)->tv_sec || (a)->tv_nsec != (b)->tv_nsec)
#define TIMESPEC_ASSIGN(t1,t2) \
((t1)->tv_sec = (t2)->tv_sec, (t1)->tv_nsec = (t2)->tv_nsec)
#if 0
#define PITSPEC2TIMESPEC(a,b) \
((b)->tv_nsec = (((signed long long)((a)->units) * 1000000) / 1193182) * 1000, \
(b)->tv_sec = ((signed long long)((a)->gigas) * 1193182) / 1000000) /*, \
(b)->tv_sec += (b)->tv_nsec / 1000000000, \
(b)->tv_nsec %= 1000000000) */
#else
/*#define PITSPEC2TIMESPEC(a,b) \
((b)->tv_nsec = (((signed long long)((a)->units) * 1000000) / 1193182) * 1000, \
(b)->tv_nsec += (((signed long long)((a)->gigas) * 1193182) % 1000000) * 1000000, \
(b)->tv_sec = ((signed long long)((a)->gigas) * 1193182) / 1000000 , \
(b)->tv_sec += (b)->tv_nsec / 1000000000, \
(b)->tv_nsec %= 1000000000)*/
#define PITSPEC2TIMESPEC(a,b) \
((b)->tv_nsec = (((signed long long)((a)->units) * 1000000) / 1193182), \
(b)->tv_nsec += (((signed long long)((a)->gigas) * 1193182) % 1000000) * 1000, \
(b)->tv_sec = ((signed long long)((a)->gigas) * 1193182) / 1000000 , \
(b)->tv_sec += (b)->tv_nsec / 1000000, \
(b)->tv_nsec %= 1000000, \
(b)->tv_nsec *= 1000)
#endif
TIME ll_gettime(int mode, struct timespec *tsres);
void ll_read_timespec(struct timespec *tspec);
#define TIME_PTICK 1
#define TIME_EXACT 2
#define TIME_NEW 3
END_DEF
#endif