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SpinLock.Exit Method (Boolean)

Releases the lock.

Namespace:  System.Threading
Assembly:  mscorlib (in mscorlib.dll)

public void Exit(
	bool useMemoryBarrier


Type: System.Boolean

A Boolean value that indicates whether a memory fence should be issued in order to immediately publish the exit operation to other threads.


Thread ownership tracking is enabled, and the current thread is not the owner of this lock.

Calling Exit with the useMemoryBarrier argument set to true will improve the fairness of the lock at the expense of some performance. The default Exit overload behaves as if specifying true for useMemoryBarrier.

If you call Exit without having first called Enter the internal state of the SpinLock can become corrupted.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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