---
title: acquireGlobalLock
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioacpiplatformexpert/1563914-acquiregloballock
---

# acquireGlobalLock

## Declaration

```occ
virtual IOReturn acquireGlobalLock(IOService *client, UInt32 *lockToken, const mach_timespec_t *timeout);
```