static status_t
rw_lock_wait(rw_lock *lock, bool writer)
{
rw_lock_waiter waiter;
waiter.thread = find_thread(NULL);
waiter.next = NULL;
waiter.writer = writer;
if (lock->waiters != NULL)
lock->last_waiter->next = &waiter;
else
lock->waiters = &waiter;
lock->last_waiter = &waiter;
// the rw_lock is locked when entering, release it before blocking
get_user_thread()->wait_status = 1;
mutex_unlock(&lock->lock);
status_t result;
do {
result = _kern_block_thread(0, 0);
} while (result == B_INTERRUPTED);
// and lock it again before returning
mutex_lock(&lock->lock);
return result;
}
pthread_t
pthread_self(void)
{
pthread_thread* thread = get_user_thread()->pthread;
if (thread == NULL)
return &sMainThread;
return thread;
}