42fae4e3b8
* Yanix now returns io::Error This commit may seem somewhat controversial at first, but hear me out first. Currently, Yanix would return a custom error that's a wrapper around three other error types returned by various entities inside Rust's `libstd`. In particular, Yanix's error type would wrap `io::Error`, `num::TryFromIntError` and `ffi::NulError`. It turns out that there is a natural conversion between the first and the last and provided by the standard library, i.e., `From<ffi::NulError> for io::Error` is provided. So at the surface it may seem that only the first two wrapped error types are worth keeping. Digging a little bit deeper into `libstd`, `num::TryFromIntError` is essentially speaking only a marker that the integral conversion went wrong. The struct implementing this error stores a unit type, and nothing more. It therefore seems like a waste to wrap this particular error when we could unify everything under `io::Error`. And so, whenever we perform an int conversion, I suggest we simply remap the error to `io::Error::from_raw_os_error(libc::EOVERFLOW)` since this carries a comparable amount of information. As a result of completely discarding `yanix::Error` custom error type, we are invariably simplifying `yanix` itself, but also allowing `wasi-common` to simplify in several places as well. * Adapt wasi-common to changes in yanix * Add Cargo.lock * Unwrap try_into's where possible * Remove unnecessary type annotation
wasmtime
A standalone runtime for WebAssembly
A Bytecode Alliance project
Guide | Contributing | Website | Chat
Installation
The Wasmtime CLI can be installed on Linux and macOS with a small install script:
$ curl https://wasmtime.dev/install.sh -sSf | bash
Windows or otherwise interested users can download installers and binaries directly from the GitHub Releases page.
Example
If you've got the Rust compiler installed then you can take some Rust source code:
fn main() {
println!("Hello, world!");
}
and compile/run it with:
$ rustup target add wasm32-wasi
$ rustc hello.rs --target wasm32-wasi
$ wasmtime hello.wasm
Hello, world!
Features
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Lightweight. Wasmtime is a standalone runtime for WebAssembly that scales with your needs. It fits on tiny chips as well as makes use of huge servers. Wasmtime can be embedded into almost any application too.
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Fast. Wasmtime is built on the optimizing Cranelift code generator to quickly generate high-quality machine code at runtime.
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Configurable. Whether you need to precompile your wasm ahead of time, generate code blazingly fast with Lightbeam, or interpret it at runtime, Wasmtime has you covered for all your wasm-executing needs.
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WASI. Wasmtime supports a rich set of APIs for interacting with the host environment through the WASI standard.
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Standards Compliant. Wasmtime passes the official WebAssembly test suite, implements the official C API of wasm, and implements future proposals to WebAssembly as well. Wasmtime developers are intimately engaged with the WebAssembly standards process all along the way too.
Documentation
📚 Read the Wasmtime guide here! 📚
The wasmtime guide is the best starting point to learn about what Wasmtime can do for you or help answer your questions about Wasmtime. If you're curious in contributing to Wasmtime, it can also help you do that!.
It's Wasmtime.