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Merge remote-tracking branch 'dgoulet/bug23558_032_01'
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commit
a23a168f24
@ -506,7 +506,11 @@ scheduler_ev_add(const struct timeval *next_run)
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{
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tor_assert(run_sched_ev);
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tor_assert(next_run);
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event_add(run_sched_ev, next_run);
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if (BUG(event_add(run_sched_ev, next_run) < 0)) {
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log_warn(LD_SCHED, "Adding to libevent failed. Next run time was set to: "
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"%ld.%06ld", next_run->tv_sec, next_run->tv_usec);
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return;
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}
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}
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/* Make the scheduler event active with the given flags. */
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@ -507,16 +507,25 @@ kist_scheduler_schedule(void)
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{
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struct monotime_t now;
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struct timeval next_run;
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int32_t diff;
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int64_t diff;
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if (!have_work()) {
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return;
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}
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monotime_get(&now);
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diff = (int32_t) monotime_diff_msec(&scheduler_last_run, &now);
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/* If time is really monotonic, we can never have now being smaller than the
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* last scheduler run. The scheduler_last_run at first is set to 0. */
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diff = monotime_diff_msec(&scheduler_last_run, &now);
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IF_BUG_ONCE(diff < 0) {
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diff = 0;
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}
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if (diff < sched_run_interval) {
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next_run.tv_sec = 0;
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/* 1000 for ms -> us */
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/* Takes 1000 ms -> us. This will always be valid because diff can NOT be
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* negative and can NOT be smaller than sched_run_interval so values can
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* only go from 1000 usec (diff set to interval - 1) to 100000 usec (diff
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* set to 0) for the maximum allowed run interval (100ms). */
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next_run.tv_usec = (sched_run_interval - diff) * 1000;
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/* Readding an event reschedules it. It does not duplicate it. */
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scheduler_ev_add(&next_run);
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