本文整理匯總了C#中System.Threading.Barrier類的典型用法代碼示例。如果您正苦於以下問題：C# Barrier類的具體用法？C# Barrier怎麽用？C# Barrier使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
Barrier類屬於System.Threading命名空間，在下文中一共展示了Barrier類的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: BarrierSample
//引入命名空間
using System;
using System.Threading;
using System.Threading.Tasks;
class BarrierDemo
{
// Demonstrates:
// Barrier constructor with post-phase action
// Barrier.AddParticipants()
// Barrier.RemoveParticipant()
// Barrier.SignalAndWait(), incl. a BarrierPostPhaseException being thrown
static void BarrierSample()
{
int count = 0;
// Create a barrier with three participants
// Provide a post-phase action that will print out certain information
// And the third time through, it will throw an exception
Barrier barrier = new Barrier(3, (b) =>
{
Console.WriteLine("Post-Phase action: count={0}, phase={1}", count, b.CurrentPhaseNumber);
if (b.CurrentPhaseNumber == 2) throw new Exception("D'oh!");
});
// Nope -- changed my mind. Let's make it five participants.
barrier.AddParticipants(2);
// Nope -- let's settle on four participants.
barrier.RemoveParticipant();
// This is the logic run by all participants
Action action = () =>
{
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 4 and phase should be 0
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 8 and phase should be 1
// The third time, SignalAndWait() will throw an exception and all participants will see it
Interlocked.Increment(ref count);
try
{
barrier.SignalAndWait();
}
catch (BarrierPostPhaseException bppe)
{
Console.WriteLine("Caught BarrierPostPhaseException: {0}", bppe.Message);
}
// The fourth time should be hunky-dory
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 16 and phase should be 3
};
// Now launch 4 parallel actions to serve as 4 participants
Parallel.Invoke(action, action, action, action);
// This (5 participants) would cause an exception:
// Parallel.Invoke(action, action, action, action, action);
// "System.InvalidOperationException: The number of threads using the barrier
// exceeded the total number of registered participants."
// It's good form to Dispose() a barrier when you're done with it.
barrier.Dispose();
}
}