Function background_thread_sleep

deps/jemalloc/src/background_thread.c:215–269

}

static void
background_thread_sleep(tsdn_t *tsdn, background_thread_info_t *info,
    uint64_t interval) {
	if (config_stats) {
		info->tot_n_runs++;
	}
	info->npages_to_purge_new = 0;

	struct timeval tv;
	/* Specific clock required by timedwait. */
	gettimeofday(&tv, NULL);
	nstime_t before_sleep;
	nstime_init2(&before_sleep, tv.tv_sec, tv.tv_usec * 1000);

	int ret;
	if (interval == BACKGROUND_THREAD_INDEFINITE_SLEEP) {
		assert(background_thread_indefinite_sleep(info));
		ret = pthread_cond_wait(&info->cond, &info->mtx.lock);
		assert(ret == 0);
	} else {
		assert(interval >= BACKGROUND_THREAD_MIN_INTERVAL_NS &&
		    interval <= BACKGROUND_THREAD_INDEFINITE_SLEEP);
		/* We need malloc clock (can be different from tv). */
		nstime_t next_wakeup;
		nstime_init(&next_wakeup, 0);
		nstime_update(&next_wakeup);
		nstime_iadd(&next_wakeup, interval);
		assert(nstime_ns(&next_wakeup) <
		    BACKGROUND_THREAD_INDEFINITE_SLEEP);
		background_thread_wakeup_time_set(tsdn, info,
		    nstime_ns(&next_wakeup));

		nstime_t ts_wakeup;
		nstime_copy(&ts_wakeup, &before_sleep);
		nstime_iadd(&ts_wakeup, interval);
		struct timespec ts;
		ts.tv_sec = (size_t)nstime_sec(&ts_wakeup);
		ts.tv_nsec = (size_t)nstime_nsec(&ts_wakeup);

		assert(!background_thread_indefinite_sleep(info));
		ret = pthread_cond_timedwait(&info->cond, &info->mtx.lock, &ts);
		assert(ret == ETIMEDOUT || ret == 0);
		background_thread_wakeup_time_set(tsdn, info,
		    BACKGROUND_THREAD_INDEFINITE_SLEEP);
	}
	if (config_stats) {
		gettimeofday(&tv, NULL);
		nstime_t after_sleep;
		nstime_init2(&after_sleep, tv.tv_sec, tv.tv_usec * 1000);
		if (nstime_compare(&after_sleep, &before_sleep) > 0) {
			nstime_subtract(&after_sleep, &before_sleep);
			nstime_add(&info->tot_sleep_time, &after_sleep);
		}
	}
}

static bool
background_thread_pause_check(tsdn_t *tsdn, background_thread_info_t *info) {