Self-modifying C# (MSIL) code?

Question

How can I dynamically modify MSIL code in-memory with C#/.NET?

And yes, I'm really looking to replace existing code that's already in memory on the fly.
Specifically, I'm not:

• Looking to only generate new code (via expression templates, ILGenerator, etc.)
• Trying to emit a new binary module in the hopes of loading it into memory later

Unnecessarily

As far as I am aware, this is not supported in .net IL. Why is this specific scenario required? – Bourg

Why do you need this? – Quantize

@newStackExchangeInstance: I can't really discuss the project I'm working on, all I can say is that having this capability would help a lot. – Unnecessarily

@sheldo Given that Mehrdad is talking about a Virtual Machine Runtime, whose premise of an easily modifiable IL comes with the .NET territory, it is definitely possible. Additionally with unsafe and/or Marshalled invocations there is little one can not do. – Aussie

Answer 1

.Net Profiling API seems promising.

Otherwise, I'm stumped.

Olivaolivaceous

It seems to require native code... is there no way to do it from managed code? – Unnecessarily