void item_scrubber_main(struct default_engine *engine)
{
hash_item cursor;
int ii;
memset(&cursor, 0, sizeof(cursor));
cursor.refcount = 1;
for (ii = 0; ii < POWER_LARGEST; ++ii) {
bool skip = false;
cb_mutex_enter(&engine->items.lock);
if (engine->items.heads[ii] == NULL) {
skip = true;
} else {
/* add the item at the tail */
do_item_link_cursor(engine, &cursor, ii);
}
cb_mutex_exit(&engine->items.lock);
if (!skip) {
item_scrub_class(engine, &cursor);
}
}
cb_mutex_enter(&engine->scrubber.lock);
engine->scrubber.stopped = time(NULL);
engine->scrubber.running = false;
cb_mutex_exit(&engine->scrubber.lock);
}
static void *item_scubber_main(void *arg)
{
struct default_engine *engine = arg;
hash_item cursor = { .refcount = 1 };
for (int ii = 0; ii < POWER_LARGEST; ++ii) {
pthread_mutex_lock(&engine->cache_lock);
bool skip = false;
if (engine->items.heads[ii] == NULL) {
skip = true;
} else {
// add the item at the tail
do_item_link_cursor(engine, &cursor, ii);
}
pthread_mutex_unlock(&engine->cache_lock);
if (!skip) {
item_scrub_class(engine, &cursor);
}
}
pthread_mutex_lock(&engine->scrubber.lock);
engine->scrubber.stopped = time(NULL);
engine->scrubber.running = false;
pthread_mutex_unlock(&engine->scrubber.lock);
return NULL;
}
bool item_start_scrub(struct default_engine *engine)
{
bool ret = false;
pthread_mutex_lock(&engine->scrubber.lock);
if (!engine->scrubber.running) {
engine->scrubber.started = time(NULL);
engine->scrubber.stopped = 0;
engine->scrubber.visited = 0;
engine->scrubber.cleaned = 0;
engine->scrubber.running = true;
pthread_t t;
pthread_attr_t attr;
if (pthread_attr_init(&attr) != 0 ||
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0 ||
pthread_create(&t, &attr, item_scubber_main, engine) != 0)
{
engine->scrubber.running = false;
} else {
ret = true;
}
}
pthread_mutex_unlock(&engine->scrubber.lock);
return ret;
}