---
title: OS_UNFAIR_LOCK_FLAG_ADAPTIVE_SPIN
framework: os
role: symbol
role_heading: Enumeration Case
path: os/os_unfair_lock_flags_t/os_unfair_lock_flag_adaptive_spin
---

# OS_UNFAIR_LOCK_FLAG_ADAPTIVE_SPIN

## Declaration

```occ
OS_UNFAIR_LOCK_FLAG_ADAPTIVE_SPIN
```