express-c
futhark
express-c | futhark | |
---|---|---|
7 | 53 | |
16 | 2,300 | |
- | 2.1% | |
6.3 | 9.8 | |
3 months ago | 5 days ago | |
C | Haskell | |
MIT License | ISC 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.
express-c
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Is Parallel Programming Hard, and, If So, What Can You Do About It? v2023.06.11a
GCD/libdispatch is a fantastic approach to concurrency and you can build and install support for non-Apple operating systems:
https://github.com/apple/swift-corelibs-libdispatch
Here’s a simple echo server:
https://github.com/williamcotton/c_playground/blob/master/sr...
Here’s a simple multithreaded database pool:
https://github.com/williamcotton/express-c/blob/master/src/d...
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A highly intuitive visual guide on how memory allocation works, step by step
Apache does this! And I do this in my own C web framework:
https://github.com/williamcotton/express-c/blob/master/deps/...
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My favorite C compiler flags during development
Unfortunately not all of the sanitizers are working in clang for Apple Silicon machines. For my own CI pipeline I run both Darwin and Linux builds, leaks and valgrind respectively, along with the kitchen sink of compiler sanitizers:
Here’s the GitHub actions for those platforms and a link to the Makefile:
GitHub Action:
https://github.com/williamcotton/express-c/blob/master/.gith...
Makefile:
https://github.com/williamcotton/express-c/blob/f2e1dde2f5a7...
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The two types of C programmers (a provocative thesis)
Lol, yeah, the libdispatch runtime is probably about as big as the Go runtime!
I think this has a slight advantage in that it uses a memory arena for a per-request bump allocator so it should keep overall memory usage lower.
The slowest part of all this has to do with Block_copy and the places where I’m very much treating blocks/closures in an OOP type manner.
This could be fixed by writing a different function that did basically the same thing as Block_copy but for all the “methods” on an “object” in a single pass. But who has time for that? :D
Here’s more about those performance issues and some text code that show how slow the approach is:
https://github.com/williamcotton/express-c/tree/master/resea...
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Software Dark Matter Is the Enemy of Software Transparency
I’ve used an approach to copy only the shared libs from the build container to the production container. This not only gets rid of most of this “dark matter” but results in much smaller containers!
https://github.com/williamcotton/express-c/blob/master/demo/...
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Untangling Lifetimes: The Arena Allocator
I use arenas for HTTP request handlers. The JSON built or parsed is only going to be around for the lifetime of the request. It's much simpler and faster to use an arena than to do reference counting wrapped around malloc/free.
Here's an example where in a commit I swapped in an arena:
https://github.com/williamcotton/express-c/commit/4ae53f38e3...
futhark
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What downsides exist to Futhark? Seems almost too good to be true?
Why Futhark? (futhark-lang.org)
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GPU Programming: When, Why and How?
There is no on-going work to support Metal apart from the work done by Miles. There's an old issue about it: https://github.com/diku-dk/futhark/issues/853#issuecomment-5...
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Is Parallel Programming Hard, and, If So, What Can You Do About It? v2023.06.11a
Functional programming can be a great way to handle parallel programming in a sane way. See the Futhark language [1], for example, that accepts high-level constructs like map and convert them to the appropriate machine code, either on the CPU or the GPU.
[1] https://futhark-lang.org/
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Is there a programming language that will blow my mind?
Futhark - use a functional language to program the gpu
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Does This Language Exist?
You might want to look into Futhark, although it's mainly designed for writing GPU code.
- Learn WebGPU
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Two-tier programming language
Futhark https://futhark-lang.org/
- Best book on writing an optimizing compiler (inlining, types, abstract interpretation)?
- Functional GPU programming: what are alternatives or generalizations of the idea of "number of cycles must be known at compile time"?
- APL: An Array Oriented Programming Language (2018)
What are some alternatives?
c_playground - C Playground
arrayfire-rust - Rust wrapper for ArrayFire
multiplix - An operating system kernel for RISC-V and AArch64 SBCs
dex-lang - Research language for array processing in the Haskell/ML family
mandelbrot - Simple fractal generator
Halide - a language for fast, portable data-parallel computation
Hopac - http://hopac.github.io/Hopac/Hopac.html
julia - The Julia Programming Language
gcc
BQN - An APL-like programming language. Self-hosted!
swift-corelibs-libdispatch - The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware
kompute - General purpose GPU compute framework built on Vulkan to support 1000s of cross vendor graphics cards (AMD, Qualcomm, NVIDIA & friends). Blazing fast, mobile-enabled, asynchronous and optimized for advanced GPU data processing usecases. Backed by the Linux Foundation.