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Barrier Class

.NET Framework (current version)
 

Enables multiple tasks to cooperatively work on an algorithm in parallel through multiple phases.

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

System::Object
  System.Threading::Barrier

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[ComVisibleAttribute(false)]
[HostProtectionAttribute(SecurityAction::LinkDemand, Synchronization = true, 
	ExternalThreading = true)]
public ref class Barrier : IDisposable

NameDescription
System_CAPS_pubmethodBarrier(Int32)

Initializes a new instance of the Barrier class.

System_CAPS_pubmethodBarrier(Int32, Action<Barrier^>^)

Initializes a new instance of the Barrier class.

NameDescription
System_CAPS_pubpropertyCurrentPhaseNumber

Gets the number of the barrier's current phase.

System_CAPS_pubpropertyParticipantCount

Gets the total number of participants in the barrier.

System_CAPS_pubpropertyParticipantsRemaining

Gets the number of participants in the barrier that haven’t yet signaled in the current phase.

NameDescription
System_CAPS_pubmethodAddParticipant()

Notifies the Barrier that there will be an additional participant.

System_CAPS_pubmethodAddParticipants(Int32)

Notifies the Barrier that there will be additional participants.

System_CAPS_pubmethodDispose()

Releases all resources used by the current instance of the Barrier class.

System_CAPS_protmethodDispose(Boolean)

Releases the unmanaged resources used by the Barrier, and optionally releases the managed resources.

System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodRemoveParticipant()

Notifies the Barrier that there will be one less participant.

System_CAPS_pubmethodRemoveParticipants(Int32)

Notifies the Barrier that there will be fewer participants.

System_CAPS_pubmethodSignalAndWait()

Signals that a participant has reached the barrier and waits for all other participants to reach the barrier as well.

System_CAPS_pubmethodSignalAndWait(CancellationToken)

Signals that a participant has reached the barrier and waits for all other participants to reach the barrier, while observing a cancellation token.

System_CAPS_pubmethodSignalAndWait(Int32)

Signals that a participant has reached the barrier and waits for all other participants to reach the barrier as well, using a 32-bit signed integer to measure the timeout.

System_CAPS_pubmethodSignalAndWait(Int32, CancellationToken)

Signals that a participant has reached the barrier and waits for all other participants to reach the barrier as well, using a 32-bit signed integer to measure the timeout, while observing a cancellation token.

System_CAPS_pubmethodSignalAndWait(TimeSpan)

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.

System_CAPS_pubmethodSignalAndWait(TimeSpan, CancellationToken)

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.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

A group of tasks cooperate by moving through a series of phases, where each in the group signals it has arrived at the Barrier in a given phase and implicitly waits for all others to arrive. The same Barrier can be used for multiple phases.

The following example shows how to use a barrier:

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No code example is currently available or this language may not be supported.

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

All public and protected members of Barrier are thread-safe and may be used concurrently from multiple threads, with the exception of Dispose, which must only be used when all other operations on the Barrier have completed.

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