---
title: kdp_register_callout
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.5+]
path: kernel/1526280-kdp_register_callout
---

# kdp_register_callout

## Declaration

```occ
void kdp_register_callout(kdp_callout_fn_t fn, void *arg);
```

## See Also

### kdp

- [kdp_register_send_receive](kernel/1399355-kdp_register_send_receive.md)
- [kdp_unregister_send_receive](kernel/1399359-kdp_unregister_send_receive.md)