-
- pthread_cond_destroy(&helper_data->cond);
- pthread_mutex_destroy(&helper_data->lock);
- sfree(helper_data);
-}
-
-static void *helper_thread_main(void *data)
-{
- struct helper_data *hd = data;
- unsigned int msec_to_next_event, next_log;
- struct timeval tv, last_du;
- int ret = 0;
-
- sk_out_assign(hd->sk_out);
-
- gettimeofday(&tv, NULL);
- memcpy(&last_du, &tv, sizeof(tv));
-
- fio_mutex_up(startup_mutex);
-
- msec_to_next_event = DISK_UTIL_MSEC;
- while (!ret && !hd->exit) {
- struct timespec ts;
- struct timeval now;
- uint64_t since_du;
-
- timeval_add_msec(&tv, msec_to_next_event);
- ts.tv_sec = tv.tv_sec;
- ts.tv_nsec = tv.tv_usec * 1000;
-
- pthread_mutex_lock(&hd->lock);
- pthread_cond_timedwait(&hd->cond, &hd->lock, &ts);
-
- gettimeofday(&now, NULL);
-
- if (hd->reset) {
- memcpy(&tv, &now, sizeof(tv));
- memcpy(&last_du, &now, sizeof(last_du));
- hd->reset = 0;
- }
-
- pthread_mutex_unlock(&hd->lock);
-
- since_du = mtime_since(&last_du, &now);
- if (since_du >= DISK_UTIL_MSEC || DISK_UTIL_MSEC - since_du < 10) {
- ret = update_io_ticks();
- timeval_add_msec(&last_du, DISK_UTIL_MSEC);
- msec_to_next_event = DISK_UTIL_MSEC;
- if (since_du >= DISK_UTIL_MSEC)
- msec_to_next_event -= (since_du - DISK_UTIL_MSEC);
- } else {
- if (since_du >= DISK_UTIL_MSEC)
- msec_to_next_event = DISK_UTIL_MSEC - (DISK_UTIL_MSEC - since_du);
- else
- msec_to_next_event = DISK_UTIL_MSEC;
- }
-
- if (hd->do_stat) {
- hd->do_stat = 0;
- __show_running_run_stats();
- }
-
- next_log = calc_log_samples();
- if (!next_log)
- next_log = DISK_UTIL_MSEC;
-
- msec_to_next_event = min(next_log, msec_to_next_event);
-
- if (!is_backend)
- print_thread_status();
- }
-
- fio_writeout_logs(false);
-
- sk_out_drop();
- return NULL;
-}
-
-static int create_helper_thread(struct sk_out *sk_out)
-{
- struct helper_data *hd;
- int ret;
-
- hd = smalloc(sizeof(*hd));
-
- setup_disk_util();
-
- hd->sk_out = sk_out;
- pthread_cond_init(&hd->cond, NULL);
- pthread_mutex_init(&hd->lock, NULL);
-
- ret = pthread_create(&hd->thread, NULL, helper_thread_main, hd);
- if (ret) {
- log_err("Can't create helper thread: %s\n", strerror(ret));
- return 1;
- }
-
- helper_data = hd;
-
- dprint(FD_MUTEX, "wait on startup_mutex\n");
- fio_mutex_down(startup_mutex);
- dprint(FD_MUTEX, "done waiting on startup_mutex\n");
- return 0;