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89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/*
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* BIRD -- Unix Timers
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*
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* (c) 1998 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_TIMER_H_
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#define _BIRD_TIMER_H_
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#include <time.h>
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#include "lib/resource.h"
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typedef time_t bird_clock_t; /* Use instead of time_t */
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typedef struct timer {
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resource r;
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void (*hook)(struct timer *);
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void *data;
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uint randomize; /* Amount of randomization */
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uint recurrent; /* Timer recurrence */
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node n; /* Internal link */
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bird_clock_t expires; /* 0=inactive */
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} timer;
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timer *tm_new(pool *);
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void tm_start(timer *, uint after);
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void tm_stop(timer *);
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void tm_dump_all(void);
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extern bird_clock_t now; /* Relative, monotonic time in seconds */
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extern bird_clock_t now_real; /* Time in seconds since fixed known epoch */
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extern bird_clock_t boot_time;
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static inline int
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tm_active(timer *t)
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{
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return t->expires != 0;
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}
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static inline bird_clock_t
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tm_remains(timer *t)
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{
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return t->expires ? t->expires - now : 0;
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}
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static inline void
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tm_start_max(timer *t, bird_clock_t after)
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{
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bird_clock_t rem = tm_remains(t);
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tm_start(t, (rem > after) ? rem : after);
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}
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static inline timer *
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tm_new_set(pool *p, void (*hook)(struct timer *), void *data, uint rand, uint rec)
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{
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timer *t = tm_new(p);
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t->hook = hook;
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t->data = data;
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t->randomize = rand;
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t->recurrent = rec;
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return t;
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}
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struct timeformat {
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char *fmt1, *fmt2;
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bird_clock_t limit;
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};
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bird_clock_t tm_parse_date(char *); /* Convert date to bird_clock_t */
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bird_clock_t tm_parse_datetime(char *); /* Convert date to bird_clock_t */
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#define TM_DATETIME_BUFFER_SIZE 32 /* Buffer size required by tm_format_datetime */
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void
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tm_format_datetime(char *x, struct timeformat *fmt_spec, bird_clock_t t);
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#define TIME_T_IS_64BIT (sizeof(time_t) == 8)
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#define TIME_T_IS_SIGNED ((time_t) -1 < 0)
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#define TIME_INFINITY \
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((time_t) (TIME_T_IS_SIGNED ? \
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(TIME_T_IS_64BIT ? 0x7fffffffffffffff : 0x7fffffff): \
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(TIME_T_IS_64BIT ? 0xffffffffffffffff : 0xffffffff)))
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#endif
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