957677c6f5
* Implement trap info in Lightbeam * Start using wasm-reader instead of wasmparser for parsing operators * Update to use wasm-reader, some reductions in allocation, support source location tracking for traps, start to support multi-value The only thing that still needs to be supported for multi-value is stack returns, but we need to make it compatible with Cranelift. * Error when running out of registers (although we'd hope it should be impossible) instead of panicking * WIP: Update Lightbeam to work with latest Wasmtime * WIP: Update Lightbeam to use current wasmtime * WIP: Migrate to new system for builtin functions * WIP: Update Lightbeam to work with latest Wasmtime * Remove multi_mut * Format * Fix some bugs around arguments, add debuginfo offset tracking * Complete integration with new Wasmtime * Remove commented code * Fix formatting * Fix warnings, remove unused dependencies * Fix `iter` if there are too many elements, fix compilation for latest wasmtime * Fix float arguments on stack * Remove wasm-reader and trap info work * Allocate stack space _before_ passing arguments, fail if we can't zero a xmm reg * Fix stack argument offset calculation * Fix stack arguments in Lightbeam * Re-add WASI because it somehow got removed during rebase * Workaround for apparent `type_alias_impl_trait`-related bug in rustdoc * Fix breakages caused by rebase, remove module offset info as it is unrelated to wasmtime integration PR and was broken by rebase * Add TODO comment explaining `lightbeam::ModuleContext` trait
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
-
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.
-
Fast. Wasmtime is built on the optimizing Cranelift code generator to quickly generate high-quality machine code at runtime.
-
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.
-
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.
Language Support
You can use Wasmtime from a variety of different languages through embeddings of the implementation:
- Rust - the
wasmtimecrate - C - the
wasm.h,wasi.h, andwasmtime.hheaders - Python - the
wasmtimePyPI package - .NET - the
WasmtimeNuGet package - Go - the wasmtime-go repository
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.