managarm
entt
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managarm | entt | |
---|---|---|
10 | 79 | |
1,302 | 9,447 | |
2.4% | - | |
9.3 | 9.8 | |
7 days ago | 9 days ago | |
C++ | C++ | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
managarm
- RISC-V support (super-duper ultra WIP) by ElectrodeYT · Pull Request #534 · managarm/managarm
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What are some C++ projects with high quality code that I can read through?
managarm is pretty clean from what I remember.
- The managarm Operating System: an asynch mirokernel OS with Linux compatibility
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Tilck – A Tiny Linux-Compatible Kernel
Somewhat related, Managarm[0] also attempts to be Linux compatible, but has a microkernel, multiserver design.
0. https://github.com/managarm/managarm
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Linux Kernel 6.1 LTS Released with Initial Support for the Rust Programming Language
Neat idea. There is some research done on fully async OSes like https://github.com/managarm/managarm
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Creator of SerenityOS announces new Jakt programming language effort
If you haven't already, I'd hang out with the Managarm crew. Prety friendly, and what they're doing with C++ and async is very cool!
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In Defense of Async: Function Colors Are Rusty
But well, maybe you should look at Managarm.
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Managarm development stream VOD 6/11/2021 - Implementing /proc/self
You can find more information on the project on our github page here. It is mostly a hobby project, so me and the other developers like to work on it in our free time.
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This Month in Rust OSDev (May 2021)
Not hosted on rust-osdev but the Managarm project (an OS that focuses on async and that is primarily written in C++ so far) recently gained a rustc port and ports of some basic utilities written in Rust (ripgrep, exa). Support for Rust drivers is in the works (but still requires adding support for some libraries first that wrap the low-level system call interface).
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LakeOS: a hobbyist multiserver microkernel OS written in Rust
If you have never seen an async OS, then you must’ve missed Managarm, a fully asynchronous operating system written in c++20. It’s a cool thing to check out, runs on x86_64 (a port to a raspberry pi4 is in progress) and has an extensive userland with various Linux applications running on a custom written libc. In case you’re curious, the repo can be found here: https://github.com/managarm/managarm
entt
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Using Jolt with flecs & Dear ImGui: Game Physics Introspection
EnTT is a popular alternative to flecs for C++, which has different performance/memory characteristics.
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Focus: A simple and fast text editor written in Jai
https://pastebin.com/VPypiitk This is a very small experiment i did to learn the metaprogramming features. its an ECS library using the same model as entt (https://github.com/skypjack/entt). In 200 lines or so it does the equivalent of a few thousand lines of template heavy Cpp while compiling instantly and generating good debug code.
Some walkthrough:
Line 8 declares a SparseSet type as a fairly typical template. its just a struct with arrays of type T inside. Next lines implement getters/setters for this data structure
Line 46 Base_Registry things get interesting. This is a struct that holds a bunch of SparseSet of different types, and providers getters/setters for them by type. It uses code generation to do this. The initial #insert at the start of the class injects codegen that creates structure members from the type list the struct gets on its declaration. Note also how type-lists are a native structure in the lang, no need for variadics.
Line 99 i decide to do variadic style tail templates anyway for fun. I implement a function that takes a typelist and returns the tail, and the struct is created through recursion as one would do in cpp. Getters and setters for the View struct are also implemented through recursion
Line 143 has the for expansion. This is how you overload the for loop functionality to create custom iterators.
The rest of the code is just some basic test code that runs the thing.
- Crash Course: entity component system
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Introducing Ecsact
Since we wanted a common game simulation that would be on both the server and the client we looked into a few libraries that would fit our ECS needs. It was decided we were going to write this common part of our game in C++, but rust was considered. C++ was a familiar language for us so naturally EnTT and flecs came up right away. I had used EnTT before, writing some small demo projects, so our choice was made based on familiarity. In order to integrate with Unity we created a small C interface to communicate between our simulation code and Unity’s C#. Here’s close to what it looked like. I removed some parts for brevity sake.
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Sharing Saturday #472
Are you sure you don't want to use a C++ package manager? Libtcod is on Vcpkg and with that setup you could add the fmt library or EnTT. fmt fixes C++'s string handling and EnTT fixes everything wrong with the entities of the previous tutorials.
- Where can I find the juiciest, most complex and modern c++ code?
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What are the limits of blueprints?
There's also a performance question. While we can now use Blueprint nativization to convert Blueprints to C++ the result will be a fairly naive version, fast enough for most purposes but not if you're trying to push every bit of performance. This is where you're looking at making sure you're hitting things such as using the CPU cache as well as possible for an ECS system (Look at ENTT or Flecs if you want to see what they're about and why you'd want one), or a system needing to process massive amounts of data quickly such as the Voxel Plugin.
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any resources for expanding on ECS?
For a modern engine you’re probably best looking at Unity’s DOTS. You may also want to check out some of the different open source ECS libraries such as flecs and EnTT are two popular ones for C++, but there’s lots of them. Largely you’ll see lots of different approaches taken, all with their own pros and cons. Not all of them will be performant (some focus more on the design benefits) while others will be optimised for certain use cases. What you should prioritise will depend on your specific needs.
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DynaMix 2.0.0 Released
You can think of DynaMix as combining one of these libraries with an ECS like entt(https://github.com/skypjack/entt)
- Flecs – A fast entity component system for C and C++
What are some alternatives?
mlibc - Portable C standard library
flecs - A fast entity component system (ECS) for C & C++
WingOS - a little 64bit operating system written in c++ with smp support
Hazel - Hazel Engine
modern-cpp-tutorial - 📚 Modern C++ Tutorial: C++11/14/17/20 On the Fly | https://changkun.de/modern-cpp/
raylib - A simple and easy-to-use library to enjoy videogames programming
Beef - Beef Programming Language
flecs-lua - Lua script host for flecs
crystal - The Crystal Programming Language
Roguelike-Tutorial-2021 - Roguelike tutorial written hard with GDscript
Vale - Compiler for the Vale programming language - http://vale.dev/
UnrealCLR - Unreal Engine .NET 6 integration