Function background_thread_stats_read

deps/jemalloc/src/background_thread.c:788–822

}

bool
background_thread_stats_read(tsdn_t *tsdn, background_thread_stats_t *stats) {
	assert(config_stats);
	malloc_mutex_lock(tsdn, &background_thread_lock);
	if (!background_thread_enabled()) {
		malloc_mutex_unlock(tsdn, &background_thread_lock);
		return true;
	}

	stats->num_threads = n_background_threads;
	uint64_t num_runs = 0;
	nstime_init(&stats->run_interval, 0);
	for (unsigned i = 0; i < max_background_threads; i++) {
		background_thread_info_t *info = &background_thread_info[i];
		if (malloc_mutex_trylock(tsdn, &info->mtx)) {
			/*
			 * Each background thread run may take a long time;
			 * avoid waiting on the stats if the thread is active.
			 */
			continue;
		}
		if (info->state != background_thread_stopped) {
			num_runs += info->tot_n_runs;
			nstime_add(&stats->run_interval, &info->tot_sleep_time);
		}
		malloc_mutex_unlock(tsdn, &info->mtx);
	}
	stats->num_runs = num_runs;
	if (num_runs > 0) {
		nstime_idivide(&stats->run_interval, num_runs);
	}
	malloc_mutex_unlock(tsdn, &background_thread_lock);

	return false;
}

#undef BACKGROUND_THREAD_NPAGES_THRESHOLD
#undef BILLION