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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Threading;
namespace Microsoft.TestCommon
{
/// <summary>
/// This is an implementation of SynchronizationContext that not only queues things on the thread pool for
/// later work, but also ensures that it sets itself back as the synchronization context (something that the
/// default implementatation of SynchronizationContext does not do).
/// </summary>
public class ThreadPoolSyncContext : SynchronizationContext
{
public override void Post(SendOrPostCallback d, object state)
{
ThreadPool.QueueUserWorkItem(_ =>
{
SynchronizationContext oldContext = SynchronizationContext.Current;
SynchronizationContext.SetSynchronizationContext(this);
d.Invoke(state);
SynchronizationContext.SetSynchronizationContext(oldContext);
}, null);
}
public override void Send(SendOrPostCallback d, object state)
{
SynchronizationContext oldContext = SynchronizationContext.Current;
SynchronizationContext.SetSynchronizationContext(this);
d.Invoke(state);
SynchronizationContext.SetSynchronizationContext(oldContext);
}
}
}
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