3b7cb6ee64
* Enable jitdump profiling support by default This the result of some of the investigation I was doing for #1017. I've done a number of refactorings here which culminated in a number of changes that all amount to what I think should result in jitdump support being enabled by default: * Pass in a list of finished functions instead of just a range to ensure that we're emitting jit dump data for a specific module rather than a whole `CodeMemory` which may have other modules. * Define `ProfilingStrategy` in the `wasmtime` crate to have everything locally-defined * Add support to the C API to enable profiling * Documentation added for profiling with jitdump to the book * Split out supported/unsupported files in `jitdump.rs` to avoid having lots of `#[cfg]`. * Make dependencies optional that are only used for `jitdump`. * Move initialization up-front to `JitDumpAgent::new()` instead of deferring it to the first module. * Pass around `Arc<dyn ProfilingAgent>` instead of `Option<Arc<Mutex<Box<dyn ProfilingAgent>>>>` The `jitdump` Cargo feature is now enabled by default which means that our published binaries, C API artifacts, and crates will support profiling at runtime by default. The support I don't think is fully fleshed out and working but I think it's probably in a good enough spot we can get users playing around with it!
This is the wasmtime-wasi crate, which implements the
WebAssembly System Interface (WASI) API in Rust.
WASI is greatly inspired by and directly derived from CloudABI. It differs in that it has aspirations to expand to a greater scope, and to better support the needs of WebAssembly engines.