rust jit wasm webassembly runtime wasi cranelift sandbox wasmtime

Alex Crichton 80b095f2e2 Add API to statically assert signature of a `Func` (#955 ) * Add API to statically assert signature of a `Func` This commit add a family of APIs to `Func` named `getN` where `N` is the number of arguments. Each function will attempt to statically assert the signature of a `Func` and, if matching, returns a corresponding closure which can be used to invoke the underlying function. The purpose of this commit is to add a highly optimized way to enter a wasm module, performing type checks up front and avoiding all the costs of boxing and unboxing arguments within a `Val`. In general this should be much more optimized than the previous `call` API for entering a wasm module, if the signature is statically known. * rustfmt * Remove stray debugging		5 years ago
.dependabot	Update dependabot for only security updates	5 years ago
.github	Test wasmtime-c-api crate (#904)	5 years ago
ci	Move the C API to a separate crate (#818)	5 years ago
crates	Add API to statically assert signature of a `Func` (#955)	5 years ago
docs	Update broken URL to Fuchsia docs (#936)	5 years ago
fuzz	Remove always-on logging from fuzz targets (#878)	5 years ago
scripts	Delete the `wasmtime-wasi-c` crate (#844)	5 years ago
src	Add more CLI flags for wasm features (#917)	5 years ago
tests	Update to cranelift 0.58.0 and enable (but ignore) reference types and bulk memory tests (#926)	5 years ago
.gitignore	Commit Cargo.lock. (#705)	5 years ago
.gitmodules	Move the C API to a separate crate (#818)	5 years ago
.rustfmt.toml	Convert a CRLF file.	5 years ago
CODE_OF_CONDUCT.md	docs: Include the code of conduct directly into the mdbook	5 years ago
CONTRIBUTING.md	Fix links in CONTRIBUTING.md (#565)	5 years ago
Cargo.lock	Update wasmparser to 0.51.2 (#952)	5 years ago
Cargo.toml	Don't spend build time optimizing build-time-only crates	5 years ago
LICENSE	Adjust whitespace to match the upstream exception text.	6 years ago
ORG_CODE_OF_CONDUCT.md	Make it a Bytecode Alliance project (#549)	5 years ago
README.md	Update lightbeam link (#558)	5 years ago
SECURITY.md	Make it a Bytecode Alliance project (#549)	5 years ago
build.rs	Update to cranelift 0.58.0 and enable (but ignore) reference types and bulk memory tests (#926)	5 years ago
clippy.toml	General Cargo.toml cleanup. (#529)	5 years ago

README.md

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.