mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-14 23:28:43 +00:00
138 lines
2.7 KiB
C
138 lines
2.7 KiB
C
/*
|
|
* BIRD -- Unix Timers
|
|
*
|
|
* (c) 1998 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_TIMER_H_
|
|
#define _BIRD_TIMER_H_
|
|
|
|
#include <time.h>
|
|
|
|
#include "lib/resource.h"
|
|
|
|
/* Microsecond time */
|
|
|
|
typedef s64 btime;
|
|
|
|
#define S_ *1000000
|
|
#define MS_ *1000
|
|
#define US_ *1
|
|
#define NS_ /1000
|
|
|
|
#define TO_S /1000000
|
|
#define TO_MS /1000
|
|
#define TO_US /1
|
|
#define TO_NS *1000
|
|
|
|
#ifndef PARSER
|
|
#define S S_
|
|
#define MS MS_
|
|
#define US US_
|
|
#define NS NS_
|
|
#endif
|
|
|
|
typedef time_t bird_clock_t; /* Use instead of time_t */
|
|
|
|
typedef struct timer {
|
|
resource r;
|
|
void (*hook)(struct timer *);
|
|
void *data;
|
|
unsigned randomize; /* Amount of randomization */
|
|
unsigned recurrent; /* Timer recurrence */
|
|
node n; /* Internal link */
|
|
btime expires_btime; /* 0=inactive */
|
|
bird_clock_t expires; /* == expires_btime TO_S */
|
|
} timer;
|
|
|
|
timer *tm_new(pool *);
|
|
void tm_start(timer *, unsigned after);
|
|
void tm_start_btime(timer *, btime after);
|
|
void tm_stop(timer *);
|
|
void tm_dump_all(void);
|
|
|
|
extern bird_clock_t now; /* Relative, monotonic time in seconds */
|
|
extern btime now_btime; /* dtto in microseconds */
|
|
extern bird_clock_t now_real; /* Time in seconds since fixed known epoch */
|
|
extern bird_clock_t boot_time;
|
|
|
|
|
|
static inline int
|
|
tm_active(timer *t)
|
|
{
|
|
return t->expires_btime != 0;
|
|
}
|
|
|
|
static inline btime
|
|
tm_remains_btime(timer *t)
|
|
{
|
|
return t->expires_btime ? t->expires_btime - now_btime : 0;
|
|
}
|
|
|
|
static inline bird_clock_t
|
|
tm_remains(timer *t)
|
|
{
|
|
return tm_remains_btime(t) TO_S;
|
|
}
|
|
|
|
static inline void
|
|
tm_start_max_btime(timer *t, btime after)
|
|
{
|
|
btime rem = tm_remains_btime(t);
|
|
tm_start(t, (rem > after) ? rem : after);
|
|
}
|
|
|
|
static inline void
|
|
tm_start_min_btime(timer *t, btime after)
|
|
{
|
|
btime rem = tm_remains_btime(t);
|
|
if (!rem || after < rem)
|
|
tm_start(t, after);
|
|
}
|
|
|
|
static inline void
|
|
tm_start_max(timer *t, unsigned after)
|
|
{
|
|
tm_start_max_btime(t, after S_);
|
|
}
|
|
|
|
static inline timer *
|
|
tm_new_set(pool *p, void (*hook)(struct timer *), void *data, unsigned rand, unsigned rec)
|
|
{
|
|
timer *t = tm_new(p);
|
|
t->hook = hook;
|
|
t->data = data;
|
|
t->randomize = rand;
|
|
t->recurrent = rec;
|
|
return t;
|
|
}
|
|
|
|
|
|
struct timeformat {
|
|
char *fmt1, *fmt2;
|
|
bird_clock_t limit;
|
|
};
|
|
|
|
bird_clock_t tm_parse_date(char *); /* Convert date to bird_clock_t */
|
|
bird_clock_t tm_parse_datetime(char *); /* Convert date to bird_clock_t */
|
|
|
|
#define TM_DATETIME_BUFFER_SIZE 32 /* Buffer size required by tm_format_datetime */
|
|
void
|
|
tm_format_datetime(char *x, struct timeformat *fmt_spec, bird_clock_t t);
|
|
|
|
#ifdef TIME_T_IS_64BIT
|
|
#define TIME_INFINITY 0x7fffffffffffffff
|
|
#else
|
|
#ifdef TIME_T_IS_SIGNED
|
|
#define TIME_INFINITY 0x7fffffff
|
|
#else
|
|
#define TIME_INFINITY 0xffffffff
|
|
#endif
|
|
#endif
|
|
|
|
#define BTIME_INFINITY 0x7fffffffffffffff
|
|
|
|
#endif
|