---
title: OSAsyncReference64
framework: iokit
role: symbol
role_heading: Type Alias
path: iokit/osasyncreference64
---

# OSAsyncReference64

## Declaration

```swift
typealias OSAsyncReference64 = (io_user_reference_t, io_user_reference_t, io_user_reference_t, io_user_reference_t, io_user_reference_t, io_user_reference_t, io_user_reference_t, io_user_reference_t)
```