5953215bac
* Auto-generate shims for old `wasi_unstable` module This commit is effectively just doing what #707 already did, but applying it to the `snapshot_0` module as well. The end result is the same, where we cut down on all the boilerplate in `snapshot_0` and bring it in line with the main `wasi_snapshot_preview1` implementation. The goal here is to make it easier to change the two in tandem since they're both doing the same thing. * Migrate `wasi_common::hostcalls` to a macro This commit migrates the `hostcalls` module to being auto-generated by a macro rather than duplicating a handwritten signature for each wasi syscall. * Auto-generate snapshot_0's `hostcalls` module Similar to the previous commit, but for `snapshot_0` * Delete the `wasi-common-cbindgen` crate This is no longer needed with the hostcalls macro now, we can easily fold the definition of the cbindgen macro into the same crate. * Rustfmt * Fix windows build errors * Rustfmt * Remove now no-longer-necessary code * rustfmt
Wasmtime: a WebAssembly Runtime
A Bytecode Alliance project
Wasmtime is a standalone wasm-only optimizing runtime for WebAssembly and WASI. It runs WebAssembly code outside of the Web, and can be used both as a command-line utility or as a library embedded in a larger application.
To get started, visit wasmtime.dev.
There are Rust, C, and C++ toolchains that can compile programs with WASI. See the WASI intro for more information, and the WASI tutorial for a tutorial on compiling and running programs using WASI and wasmtime, as well as an overview of the filesystem sandboxing system.
Wasmtime passes the WebAssembly spec testsuite. To run it, update the
tests/spec_testsuite submodule with git submodule update --remote, and it
will be run as part of cargo test.
Wasmtime does not yet implement Spectre mitigations, however this is a subject of ongoing research.
Additional goals for Wasmtime include:
- Support a variety of host APIs (not just WASI), with fast calling sequences, and develop proposals for additional API modules to be part of WASI.
- Facilitate development and testing around the Cranelift and Lightbeam JITs, and other WebAssembly execution strategies.
- Develop a native ABI used for compiling WebAssembly suitable for use in both JIT and AOT to native object files.
Including Wasmtime in your project
Wasmtime exposes an API for embedding as a library through the wasmtime subcrate,
which contains both a high-level and safe Rust API, as well as a C-compatible API
compatible with the proposed WebAssembly C API.
For more information, see the Rust API embedding chapter of the Wasmtime documentation.
It's Wasmtime.