63 lines
1.7 KiB
C#
63 lines
1.7 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities
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{
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using System.Xml;
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using System.Collections.Generic;
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using System.Threading;
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using System.Runtime;
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class AsyncInvokeOperation
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{
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object thisLock;
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public AsyncInvokeOperation(SynchronizationContext syncContext)
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{
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Fx.Assert(syncContext != null, "syncContext cannot be null");
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this.SyncContext = syncContext;
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thisLock = new object();
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}
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SynchronizationContext SyncContext
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{
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get;
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set;
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}
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bool Completed
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{
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get;
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set;
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}
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public void OperationStarted()
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{
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this.SyncContext.OperationStarted();
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}
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public void OperationCompleted()
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{
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lock (thisLock)
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{
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Fx.AssertAndThrowFatal(!this.Completed, "Async operation has already been completed");
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this.Completed = true;
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}
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this.SyncContext.OperationCompleted();
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}
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public void PostOperationCompleted(SendOrPostCallback callback, object arg)
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{
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lock (thisLock)
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{
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Fx.AssertAndThrowFatal(!this.Completed, "Async operation has already been completed");
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this.Completed = true;
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}
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Fx.Assert(callback != null, "callback cannot be null");
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this.SyncContext.Post(callback, arg);
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this.SyncContext.OperationCompleted();
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}
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}
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}
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