designs VS dmtcp

They do! See https://github.com/apple/swift/blob/main/docs/LibraryEvoluti...

You can also see an example of what a different high level language integration with Swift ABI looks like here: https://github.com/dotnet/designs/blob/main/proposed/swift-i...

Design Proposal

Ah, TIL. Haven't written C# since 2016.

On macOS with ARM chips W^X is mandatory also for JIT: https://github.com/dotnet/designs/blob/main/accepted/2021/ru...

Minor nitpick, while the V8 JIT doesn't support those mitigations in its current state, it can. Some of the work allowing RyuJIT (.NET's JIT) to use them might interest you: https://github.com/dotnet/designs/blob/main/accepted/2021/runtime-security-mitigations.md

I don't think it's actually a problem most of the time, but they're working on fixing it anyway.

Which kind of AOT flavour?

NGEN, .NET Native, the pseudo extract zip, the pseudo extract zip with mmap execution,.....

https://github.com/dotnet/designs/blob/main/accepted/2020/fo...

Even in .NET 6 it is going to be "almost there wait for .NET 7 for all use cases".

I would love to make more use of CRIU. E.g. I considered to use CRIU for my Python preloaded logic (https://github.com/albertz/python-preloaded). Unfortunately, at that point in time, CRIU must be used with root access, which was not an option. However, I see that the PR was merged now, so maybe it works now? (https://github.com/checkpoint-restore/criu/pull/1930)

There is also DMTCP (https://github.com/dmtcp/dmtcp/) but this might have other problems for my use case.

My solution was to use a fork server instead, which works almost equally well. There are not really much downsides with this approach. And this is actually quite simple, and also quite cross-platform (except Windows).

Or maybe DMTCP is a better alternative to CRIU?