# Extra Clang Tools 21.1.8 documentation

## clang-tidy - darwin-avoid-spinlock

# darwin-avoid-spinlock

Finds usages of `OSSpinlock`, which is deprecated due to potential livelock problems.

This check will detect following function invocations:

- `OSSpinlockLock`

- `OSSpinlockTry`

- `OSSpinlockUnlock`

The corresponding information about the problem of `OSSpinlock`: https://blog.postmates.com/why-spinlocks-are-bad-on-ios-b69fc5221058