mimalloc VS Magic Enum C++

mimalloc: mimalloc is an open source implementation of malloc, currently the best performing allocator.

Some compiler writers thought that was the case, if [0] is related to OP. I don't have a "modern" (after 6th gen) Intel CPU to test it on, but note that most programs are compiled for a relatively generic CPU.

[0]: https://github.com/microsoft/mimalloc/issues/807

Yes, it's very efficient and that's not where the main problem lies. However, small allocations with modern C heap allocators like mimalloc or snmalloc has gotten extremely efficient as well. Would be interesting to see a benchmark comparison with Java's G1 and ZGC.

Memory management for C is not itself a solved problem, not only is there a lot of performance to squeeze out of malloc itself (the benchmarks on https://github.com/microsoft/mimalloc exemplifies the variance between the implementations), but it's up to the programmer to implement memory management in the large in an efficient way, which is not an easy task. One sure mark of a slow C program is one with a ton of mallocs and frees strewn all over.

It's a very terse howto for replacing Factorio's memory allocator with Microsoft's mimalloc, and configuring mimalloc so that memory is always allocated on huge pages by using madvise().

I was wondering if Koka's perceus referencing counting style is any different from the reference counting that Lean4 implements? I understand that both rely upon the mimalloc (https://github.com/microsoft/mimalloc) library in the backend.

If you are fine with heap allocations then there are only few dozens operator new/delete to override to regain control over normal C++ code memory use. Allocators and STL all need to call those. At least that's what gaming does on all platforms. If you need examples you can check Mimalloc on github ( https://github.com/microsoft/mimalloc/blob/master/include/mimalloc-new-delete.h ).

What's the difference between this and Microsoft's? https://github.com/microsoft/mimalloc

Version 0.1.31 of the Rust wrapper for the mimalloc memory allocator has just been released!

I'm not sure this is quite what you're asking for, but this library has been super helpful to me in the past : https://github.com/Neargye/magic_enum

Also, a shoutout to Magic Enum: https://github.com/Neargye/magic_enum

What does this have to offer over magic_enum?

But it's a hack, and I prefer not to use hacks in production, because of their significant limitations:

You can either write a to string(view) function for your enum or use https://github.com/Neargye/magic_enum

Why reinvent the wheel? magic_enum

Also if you want to convert enum members to string representation I suggest you just use magic_enum instead, much smaller dependency.

Magic Enum provides that.