This documentation is archived and is not being maintained.

SpinWait.SpinUntil Method (Func<Boolean>, Int32)

Spins until the specified condition is satisfied or until the specified timeout is expired.

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

public static bool SpinUntil(
	Func<bool> condition,
	int millisecondsTimeout


Type: System.Func<Boolean>
A delegate to be executed over and over until it returns true.
Type: System.Int32
The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.

Return Value

Type: System.Boolean
True if the condition is satisfied within the timeout; otherwise, false


The condition argument is null.


millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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