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timeout: oneshot timer support.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2016-01-22 06:45:27 +10:30
parent 9f560a9494
commit 6ba5c3cc3b
2 changed files with 45 additions and 0 deletions
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36
daemon/timeout.c
View File

@ -16,3 +16,39 @@ void refresh_timeout(struct lightningd_state *dstate, struct timeout *t)
timer_add(&dstate->timers, &t->timer,
timeabs_add(time_now(), t->interval));
}
/* FIXME: Make all timers one-shot! */
struct oneshot {
struct timeout timeout;
struct lightningd_state *dstate;
void (*cb)(void *);
void *arg;
};
static void remove_timer(struct oneshot *o)
{
timer_del(&o->dstate->timers, &o->timeout.timer);
}
static void oneshot_done(struct oneshot *o)
{
o->cb(o->arg);
tal_free(o);
}
struct oneshot *oneshot_timeout_(struct lightningd_state *dstate,
const tal_t *ctx, unsigned int seconds,
void (*cb)(void *), void *arg)
{
struct oneshot *o = tal(ctx, struct oneshot);
o->dstate = dstate;
o->cb = cb;
o->arg = arg;
init_timeout(&o->timeout, seconds, oneshot_done, o);
refresh_timeout(dstate, &o->timeout);
tal_add_destructor(o, remove_timer);
return o;
}

9
daemon/timeout.h
View File

@ -24,4 +24,13 @@ void refresh_timeout(struct lightningd_state *dstate, struct timeout *t);
init_timeout_((t), (interval), \
typesafe_cb(void, void *, (func), (arg)), (arg))
/* tal_free this to disable timer. */
struct oneshot *oneshot_timeout_(struct lightningd_state *dstate,
const tal_t *ctx, unsigned int seconds,
void (*cb)(void *), void *arg);
#define oneshot_timeout(dstate, ctx, interval, func, arg) \
oneshot_timeout_((dstate), (ctx), (interval), \
typesafe_cb(void, void *, (func), (arg)), (arg))
#endif /* LIGHTNING_DAEMON_TIMEOUT_H */