C++ (Cpp) _kddm_get_object_no_ft примеры использования

Пример #1

static void faf_poll_notify_nodes(unsigned long dvfs_id)
{
	struct dvfs_file_struct *dvfs_file;
	struct faf_polled_fd *polled_fd;
	struct faf_polled_fd_node *polled_fd_node;
	struct hlist_node *pos;

	dvfs_file = _kddm_get_object_no_ft(dvfs_file_struct_ctnr, dvfs_id);
	if (dvfs_file && dvfs_file->file) {
		/* TODO: still required? */
		if (atomic_read (&dvfs_file->file->f_count) == 0)
			dvfs_file->file = NULL;
	}
	if (!dvfs_file || !dvfs_file->file)
		goto out_put_dvfs_file;

	mutex_lock(&faf_polled_fd_mutex);

	polled_fd = __faf_polled_fd_find(dvfs_id);
	if (!polled_fd)
		goto out_unlock;

	hlist_for_each_entry(polled_fd_node, pos, &polled_fd->nodes, list)
		faf_poll_notify_node(polled_fd_node->node_id, dvfs_id);

out_unlock:
	mutex_unlock(&faf_polled_fd_mutex);

out_put_dvfs_file:
	_kddm_put_object(dvfs_file_struct_ctnr, dvfs_id);
}

Пример #2

static int faf_polled_fd_remove(kerrighed_node_t client,
				int server_fd,
				unsigned long dvfs_id)
{
	struct dvfs_file_struct *dvfs_file;
	struct faf_polled_fd *polled_fd;
	struct faf_polled_fd_node *polled_fd_node;
	int err;

	dvfs_file = _kddm_get_object_no_ft(dvfs_file_struct_ctnr, dvfs_id);
	if (dvfs_file && dvfs_file->file) {
		/* TODO: still required? */
		if (atomic_read (&dvfs_file->file->f_count) == 0)
			dvfs_file->file = NULL;
	}

	mutex_lock(&faf_polled_fd_mutex);

	polled_fd = __faf_polled_fd_find(dvfs_id);
	BUG_ON(!polled_fd);
	BUG_ON(!polled_fd->count);
	polled_fd_node = __faf_polled_fd_find_node(polled_fd, client);
	BUG_ON(!polled_fd_node);
	BUG_ON(!polled_fd_node->count);

	polled_fd_node->count--;
	if (!polled_fd_node->count)
		faf_polled_fd_node_free(polled_fd, polled_fd_node);
	if (polled_fd->count)
		goto out_unlock;

	if (!dvfs_file || !dvfs_file->file)
		/*
		 * The file is already closed or about to be closed. The last
		 * __fput() automatically removes it from the interest set of
		 * faf_poll_epfd.
		 */
		goto free_polled_fd;

	BUG_ON(faf_poll_epfd < 0);
	err = sys_epoll_ctl(faf_poll_epfd, EPOLL_CTL_DEL, server_fd, NULL);
	BUG_ON(err);

free_polled_fd:
	faf_polled_fd_free(polled_fd);

out_unlock:
	mutex_unlock(&faf_polled_fd_mutex);

	_kddm_put_object(dvfs_file_struct_ctnr, dvfs_id);

	return 0;
}

Пример #3

Файл: shm_handler.c Проект: jeanparpaillon/kerrighed-kernel

static struct kern_ipc_perm *kcb_ipc_shm_findkey(struct ipc_ids *ids, key_t key)
{
	long *key_index;
	int id = -1;

	key_index = _kddm_get_object_no_ft(ids->krgops->key_kddm_set, key);

	if (key_index)
		id = *key_index;

	_kddm_put_object(ids->krgops->key_kddm_set, key);

	if (id != -1)
		return kcb_ipc_shm_lock(ids, id);

	return NULL;
}

Пример #4

/**
 * @author Pascal Gallard
 */
struct task_kddm_object *krg_task_readlock(pid_t pid)
{
	struct task_kddm_object *obj;

	/* Filter well known cases of no task kddm object. */
	if (!(pid & GLOBAL_PID_MASK))
		return NULL;

	obj = _kddm_get_object_no_ft(task_kddm_set, pid);
	if (likely(obj)) {
		down_read(&obj->sem);
		if (obj->write_locked == 2) {
			/* Dying object */
			up_read(&obj->sem);
			_kddm_put_object(task_kddm_set, pid);
			return NULL;
		}
		/* Marker for unlock. Dirty but temporary. */
		obj->write_locked = 0;
	}

	return obj;
}