[Mono-dev] Edit and Continue / Function body rewrite
dsrbecky at gmail.com
Fri Jul 7 15:00:15 EDT 2006
Brian Crowell wrote:
> David Srbecky wrote:
>> The idea is that I will emit disk assembly using
>> System.Reflection.Emit as usually, but later on I will re-emit body of
>> some function and fetch changed data into memory. Once I got the data
>> I can feed it to the .NET runtime - that should not be a problem.
> Er, I don't know the full internals of the Mono runtime, but I suspect
> this is not that easy to do. Correct me if I'm wrong, but I think one of
> the main reasons assemblies cannot be unloaded is that it allows you to
> make some very nice assumptions about the immutability of code-- for
> example, that function pointers will not change. It may require patching
> previously JITted code to reference a new function.
> Of course, I'd be happy to be wrong about this. Obviously, since
> Microsoft did it, there must be a way.
Yes, you are right - changing running program is probably extremely
difficult, but I want to use Microsoft runtime which has this
functionality already implemented and available via really simple API.
So this is not a problem.
The problem is that I need to get the new IL code and metadata for the
new function from System.Reflection.Emit.
My question is how difficult is it to patch System.Reflection.Emit to
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