---
title: OSSynchronizeIO
framework: driverkit
role: symbol
role_heading: Function
path: driverkit/ossynchronizeio
---

# OSSynchronizeIO

Performs an mfence instruction on Intel-based Mac computers.

## Declaration

```occ
void OSSynchronizeIO();
```

## See Also

### Additional Utilities

- [OSReportWithBacktrace](driverkit/osreportwithbacktrace.md)