Integrating the library with an external thread pool about zstd

[Cyan4973]

So, you're asking for a feature equivalent to "shared threadPool", exposed at:
https://github.com/facebook/zstd/blob/v1.5.6/lib/zstd.h#L1812 ,
but with the ability to inject an externally defined threadPool via callbacks ?

This would be a new feature indeed.

[Zeblote]

Yeah, something that would give control over when to run the tasks (and from which threads) to the user. There's an example of another library doing this here: https://github.com/NVIDIA-Omniverse/PhysX/blob/main/physx/include/task/PxCpuDispatcher.h#L49

It's a C++ library, but a similar pattern could easily be made in C by giving it a function pointer where it should submit new tasks to.