static int binder_inc_node_nilocked()

in binder.c [755:802]

• 44 lines of code
• 15 McCabe index (conditional complexity)

static int binder_inc_node_nilocked(struct binder_node *node, int strong,
				    int internal,
				    struct list_head *target_list)
{
	struct binder_proc *proc = node->proc;

	assert_spin_locked(&node->lock);
	if (proc)
		assert_spin_locked(&proc->inner_lock);
	if (strong) {
		if (internal) {
			if (target_list == NULL &&
			    node->internal_strong_refs == 0 &&
			    !(node->proc &&
			      node == node->proc->context->binder_context_mgr_node &&
			      node->has_strong_ref)) {
				pr_err("invalid inc strong node for %d\n",
					node->debug_id);
				return -EINVAL;
			}
			node->internal_strong_refs++;
		} else
			node->local_strong_refs++;
		if (!node->has_strong_ref && target_list) {
			struct binder_thread *thread = container_of(target_list,
						    struct binder_thread, todo);
			binder_dequeue_work_ilocked(&node->work);
			BUG_ON(&thread->todo != target_list);
			binder_enqueue_deferred_thread_work_ilocked(thread,
								   &node->work);
		}
	} else {
		if (!internal)
			node->local_weak_refs++;
		if (!node->has_weak_ref && list_empty(&node->work.entry)) {
			if (target_list == NULL) {
				pr_err("invalid inc weak node for %d\n",
					node->debug_id);
				return -EINVAL;
			}
			/*
			 * See comment above
			 */
			binder_enqueue_work_ilocked(&node->work, target_list);
		}
	}
	return 0;
}