59 lines
2.0 KiB
C#
59 lines
2.0 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.ServiceModel.Diagnostics
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{
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using System.Runtime;
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using System.Diagnostics;
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abstract class TraceAsyncResult : AsyncResult
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{
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static Action<AsyncCallback, IAsyncResult> waitResultCallback = new Action<AsyncCallback, IAsyncResult>(DoCallback);
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protected TraceAsyncResult(AsyncCallback callback, object state) :
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base(callback, state)
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{
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if (TraceUtility.MessageFlowTracingOnly)
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{
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this.CallbackActivity = ServiceModelActivity.CreateLightWeightAsyncActivity(Trace.CorrelationManager.ActivityId);
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base.VirtualCallback = waitResultCallback;
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}
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else if (DiagnosticUtility.ShouldUseActivity)
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{
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this.CallbackActivity = ServiceModelActivity.Current;
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if (this.CallbackActivity != null)
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{
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base.VirtualCallback = waitResultCallback;
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}
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}
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}
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public ServiceModelActivity CallbackActivity
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{
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get;
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private set;
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}
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static void DoCallback(AsyncCallback callback, IAsyncResult result)
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{
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if (result is TraceAsyncResult)
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{
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TraceAsyncResult thisPtr = result as TraceAsyncResult;
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Fx.Assert(thisPtr.CallbackActivity != null, "this shouldn't be hooked up if we don't have a CallbackActivity");
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if (TraceUtility.MessageFlowTracingOnly)
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{
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Trace.CorrelationManager.ActivityId = thisPtr.CallbackActivity.Id;
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thisPtr.CallbackActivity = null;
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}
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using (ServiceModelActivity.BoundOperation(thisPtr.CallbackActivity))
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{
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callback(result);
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}
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}
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}
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}
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}
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