---
title: setAsyncReference64
framework: kernel
role: symbol
role_heading: Type Method
path: kernel/iouserclient/3516504-setasyncreference64
---

# setAsyncReference64

## Declaration

```occ
static void setAsyncReference64(OSAsyncReference64 asyncRef, mach_port_t wakePort, mach_vm_address_t callback, io_user_reference_t refcon, task_t task);
```