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POSpeeding up Reflection Invoke C#/.NET
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copied!<p>There are plenty of posts on speeding up reflection invokes, examples here:</p> <p><a href="https://stackoverflow.com/questions/6430479/speeding-up-reflection-api-with-delegate-in-net-c">Speeding up Reflection API with delegate in .NET/C#</a></p> <p><a href="https://codeblog.jonskeet.uk/2008/08/09/making-reflection-fly-and-exploring-delegates/" rel="nofollow noreferrer">https://codeblog.jonskeet.uk/2008/08/09/making-reflection-fly-and-exploring-delegates/</a></p> <p>and here:</p> <p><a href="https://stackoverflow.com/questions/6430835/example-speeding-up-reflection-api-with-delegate-in-net-c">Example : Speeding up Reflection API with delegate in .NET/C#</a></p> <hr> <hr> <p>My question is about speeding up generic invokes. Is this possible at all?</p> <p>I've got an abstract class and a class which implements it...</p> <pre><code>public abstract class EncasulatedMessageHandler<T> where T : Message { public abstract void HandleMessage(T message); } public class Handler : EncasulatedMessageHandler<MyMessageType> { public int blat = 0; public override void HandleMessage(MyMessageType message) { blat++; } } </code></pre> <p>What I want to do is build up a list of these message handler classes and quickly invoke their HandleMessage()</p> <hr> <p>At the moment, I'm doing something that's approximately this:</p> <pre><code>object handler = Activator.CreateInstance(typeof(Handler)); // Ignore this, this is done up front. MethodInfo method = type.GetMethod("HandleMessage", BindingFlags.Instance | BindingFlags.Public); Action<object> hook = new Action<object>(delegate(object message) { method.Invoke(handler, new object[] { message }); }); // Then when I want to invoke it: hook(new MyMessageType()); </code></pre> <hr> <p>That's not the whole thing, but it's the important stuff...</p> <p>The method.Invoke is very slow, I'd like to keep the generic parameters on the class, I realise I could lock this down to object and cast it in the HandleMessage method, but I'm trying to avoid doing this.</p> <p>Is there anything I can do to speed this up? It's currently orders of magnitude slower than direct calls.</p> <p>Any help would be appreciated.</p>

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