static void *cache_thread(void *arg)
{
struct priv *s = arg;
mpthread_set_name("cache");
pthread_mutex_lock(&s->mutex);
update_cached_controls(s);
double last = mp_time_sec();
while (s->control != CACHE_CTRL_QUIT) {
if (mp_time_sec() - last > CACHE_UPDATE_CONTROLS_TIME) {
update_cached_controls(s);
last = mp_time_sec();
}
if (s->control > 0) {
cache_execute_control(s);
} else {
cache_fill(s);
}
if (s->control == CACHE_CTRL_PING) {
pthread_cond_signal(&s->wakeup);
s->control = CACHE_CTRL_NONE;
}
if (s->idle && s->control == CACHE_CTRL_NONE) {
struct timespec ts = mp_rel_time_to_timespec(CACHE_IDLE_SLEEP_TIME);
pthread_cond_timedwait(&s->wakeup, &s->mutex, &ts);
}
}
pthread_cond_signal(&s->wakeup);
pthread_mutex_unlock(&s->mutex);
MP_VERBOSE(s, "Cache exiting...\n");
return NULL;
}
static void *cache_thread(void *arg)
{
struct priv *s = arg;
pthread_mutex_lock(&s->mutex);
update_cached_controls(s);
double last = mp_time_sec();
while (s->control != CACHE_CTRL_QUIT) {
if (mp_time_sec() - last > CACHE_UPDATE_CONTROLS_TIME) {
update_cached_controls(s);
last = mp_time_sec();
}
if (s->control > 0) {
cache_execute_control(s);
} else {
cache_fill(s);
}
if (s->control == CACHE_CTRL_PING) {
pthread_cond_signal(&s->wakeup);
s->control = CACHE_CTRL_NONE;
}
if (s->idle && s->control == CACHE_CTRL_NONE)
mpthread_cond_timed_wait(&s->wakeup, &s->mutex, CACHE_IDLE_SLEEP_TIME);
}
pthread_cond_signal(&s->wakeup);
pthread_mutex_unlock(&s->mutex);
mp_msg(MSGT_CACHE, MSGL_V, "Cache exiting...\n");
return NULL;
}
// Runs in the cache thread
static void cache_execute_control(struct priv *s)
{
uint64_t old_pos = stream_tell(s->stream);
s->control_flush = false;
switch (s->control) {
case STREAM_CTRL_SET_CACHE_SIZE:
s->control_res = resize_cache(s, *(int64_t *)s->control_arg);
break;
default:
s->control_res = stream_control(s->stream, s->control, s->control_arg);
}
bool pos_changed = old_pos != stream_tell(s->stream);
bool ok = s->control_res == STREAM_OK;
if (pos_changed && !ok) {
MP_ERR(s, "STREAM_CTRL changed stream pos but "
"returned error, this is not allowed!\n");
} else if (pos_changed || (ok && control_needs_flush(s->control))) {
MP_VERBOSE(s, "Dropping cache due to control()\n");
s->read_filepos = stream_tell(s->stream);
s->control_flush = true;
cache_drop_contents(s);
}
update_cached_controls(s);
s->control = CACHE_CTRL_NONE;
pthread_cond_signal(&s->wakeup);
}
