int destroy_cache(cache_t *c)
{
printk(1, "[cache]: Destroying cache '%s'...\n", c->name);
rwlock_acquire(c->rwl, RWL_WRITER);
chash_t *h = c->hash;
c->hash = 0;
sync_cache(c);
/* Destroy the tree */
chash_destroy(h);
struct llistnode *curnode, *next;
struct ce_t *obj;
ll_for_each_entry_safe(&c->primary_ll, curnode, next, struct ce_t *, obj)
{
ll_maybe_reset_loop(&c->primary_ll, curnode, next);
remove_element(c, obj, 1);
}
ll_destroy(&c->dirty_ll);
ll_destroy(&c->primary_ll);
ll_remove_entry(cache_list, c);
rwlock_release(c->rwl, RWL_WRITER);
rwlock_destroy(c->rwl);
printk(1, "[cache]: Cache '%s' destroyed\n", c->name);
return 1;
}
/**
* remove a specific pointer
*/
void pl_remove_pointer(pointer_list_t *pl, const void *data)
{
pointer_list_entry_t *e;
e = (pointer_list_entry_t *) ll_view_head(pl);
while (e && (e->data != data))
e = (pointer_list_entry_t *) e->e.p.next;
if (e)
ll_remove_entry(pl, (linked_list_entry_t *)e);
}
void release_fsvol(ext2_fs_t *fs)
{
if(!fs) return;
ll_remove_entry(fslist, fs);
kfree(fs->sb);
fs->m_node->pid=-1;
fs->m_block->pid=-1;
mutex_destroy(fs->m_node);
mutex_destroy(fs->m_block);
mutex_destroy(&fs->ac_lock);
mutex_destroy(&fs->bg_lock);
mutex_destroy(&fs->fs_lock);
destroy_cache(fs->cache);
kfree(fs);
}
// remove the timer associated with the thread
inline static void sleepq_remove_thread(thread_t *t)
{
linked_list_entry_t *e;
assert(t->sleep >= 0); // the thread must be in the sleep queue
sleepq_sanity_check();
// let's find the thread in the queue
e = ll_view_head(sleepq);
while (e) {
thread_t *tt = (thread_t *)pl_get_pointer(e);
if (tt == t) {
linked_list_entry_t *nexte = ll_view_next(sleepq, e);
if (nexte) {
// e is not the last thread in the queue
// we need to lengthen the time the next thread will sleep
thread_t *nextt = (thread_t *)pl_get_pointer(nexte);
nextt->sleep += t->sleep;
} else {
// e is the last thread, so we need to adjust max_sleep_time
max_sleep_time -= t->sleep;
}
// remove t
ll_remove_entry(sleepq, e);
ll_free_entry(sleepq, e);
t->sleep = -1;
assert (!t->timeout); // if this fails, someone must has
// forgot to reset timeout some time ago
break;
}
e = ll_view_next(sleepq, e);
}
assert( t->sleep == -1);
assert (e != NULL); // we must find t in sleep queue
sleepq_sanity_check();
}