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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Activities.Runtime
{
using System;
using System.Runtime;
using System.Reflection;
using System.Runtime.Serialization;
using System.Diagnostics.CodeAnalysis;
[DataContract]
class EmptyWorkItem : ActivityExecutionWorkItem
{
// Called by the Pool.
public EmptyWorkItem()
{
this.IsPooled = true;
// Empty doesn't need to be cleared/reinitialized so we set it here
this.IsEmpty = true;
}
public void Initialize(ActivityInstance activityInstance)
{
base.Reinitialize(activityInstance);
}
protected override void ReleaseToPool(ActivityExecutor executor)
{
base.ClearForReuse();
executor.EmptyWorkItemPool.Release(this);
}
public override void TraceCompleted()
{
TraceRuntimeWorkItemCompleted();
}
public override void TraceScheduled()
{
TraceRuntimeWorkItemScheduled();
}
public override void TraceStarting()
{
TraceRuntimeWorkItemStarting();
}
public override bool Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)
{
Fx.Assert("Empty work items should never been executed.");
return true;
}
}
}
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