Barrier.SignalAndWait Method (TimeSpan, CancellationToken)

.NET Framework (current version)

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Signals that a participant has reached the barrier and waits for all other participants to reach the barrier as well, using a TimeSpan object to measure the time interval, while observing a cancellation token.

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

public bool SignalAndWait(
	TimeSpan timeout,
	CancellationToken cancellationToken


Type: System.TimeSpan

A TimeSpan that represents the number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely.

Type: System.Threading.CancellationToken

The CancellationToken to observe.

Return Value

Type: System.Boolean

true if all other participants reached the barrier; otherwise, false.

Exception Condition

cancellationToken has been canceled.


The current instance has already been disposed.


timeoutis a negative number other than -1 milliseconds, which represents an infinite time-out.


The method was invoked from within a post-phase action, the barrier currently has 0 participants, or the barrier is signaled by more threads than are registered as participants.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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