/**
* Cleanup the TTH cache by removing needless entries.
*/
void
tth_cache_cleanup(void)
{
if (0 == atomic_int_inc(&tth_cache_cleanups)) {
int id = thread_create(tth_cache_cleanup_thread,
NULL, THREAD_F_DETACH | THREAD_F_WARN, THREAD_STACK_MIN);
if (-1 == id)
atomic_int_dec(&tth_cache_cleanups);
} else if (debugging(0)) {
g_warning("%s(): concurrent cleanup in progress", G_STRFUNC);
atomic_int_dec(&tth_cache_cleanups);
}
}
/**
* Main entry point for the thread that cleans up the TTH cache.
*/
static void *
tth_cache_cleanup_thread(void *unused_arg)
{
hset_t *shared;
const char *rootdir = tth_cache_directory();
pslist_t *dirstack;
uint32 flags;
ftw_status_t res;
(void) unused_arg;
if (!is_directory(rootdir))
goto done; /* No TTH cache */
/*
* First pass: spot all file entries that are older than our start
* time (i.e. were created in another session) and which cannot be
* associated with a shared file.
*/
shared = share_tthset_get();
flags = FTW_O_PHYS | FTW_O_MOUNT | FTW_O_ALL;
res = ftw_foreach(rootdir, flags, 0, tth_cache_cleanup_unlink, shared);
share_tthset_free(shared);
if (res != FTW_STATUS_OK) {
g_warning("%s(): initial traversal failed with %d, aborting",
G_STRFUNC, res);
goto done;
}
/*
* Second pass: spot empty directories and remove them.
*/
flags |= FTW_O_ENTRY | FTW_O_DEPTH;
dirstack = NULL;
(void) ftw_foreach(rootdir, flags, 0, tth_cache_cleanup_rmdir, &dirstack);
pslist_free(dirstack);
/* FALL THROUGH */
done:
atomic_int_dec(&tth_cache_cleanups);
return NULL;
}
int task_free(task_id tid) {
task_t f = { tid };
do {
lc_spin_lock(lock);
task_t *t = map_find(tasks, &f);
if (t) {
if (atomic_int_dec(&t->ref_count) > 0) break;
map_remove(tasks, t);
lc_free(t);
//printf("Freed task <%f>\n",tid);
}
} while (0);
lc_spin_unlock(lock);
return SUCCESS;
}
