Generating IL code, running, changing, running again ?

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Rickard - 13 Jun 2006 13:52 GMT

I have written a small program that generates a dynamic assembly using
Reflection.Emit and adding IL code to it using ILGenerator.

Now, if I call CreateType() on my TypeBuilder object, the assembly
becomes locked. I want to be able to change the IL code afterwards.
It is important that I can not create new assemblies all the time
because this is going to be done a large number of times. Is it possible
to e.g. refer to a byte array where the IL code is, and allow this to be
changed dynamically?

It seems the only way to constantly change IL code is to use application
domains and create new assemblies all the time. The overhead of this is
way too large to be useful in my case. (I'm going to change the code
thousands of times over or even more).

Any suggestions are appreciated on this matter.

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Barry Kelly - 13 Jun 2006 14:22 GMT

> I have written a small program that generates a dynamic assembly using
> Reflection.Emit and adding IL code to it using ILGenerator.
[quoted text clipped - 5 lines]
> to e.g. refer to a byte array where the IL code is, and allow this to be
> changed dynamically?

Another way is to use DynamicMethod (in .NET 2.0) instead, if you can
(and with a little persuasion and cleverness with supplying the "target"
parameter to DynamicMethod.CreateDelegate, you can get it to do most
things.)

-- Barry

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http://barrkel.blogspot.com/

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Rickard - 14 Jun 2006 10:12 GMT

This seems to be what I was looking for. Thank you.

>> I have written a small program that generates a dynamic assembly using
>> Reflection.Emit and adding IL code to it using ILGenerator.
[quoted text clipped - 12 lines]
>
> -- Barry

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Generating IL code, running, changing, running again ?

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