70345aff31
* Remove all global state from the caching system This commit is a continuation of an effort to remove usages of `lazy_static!` and similar global state macros which can otherwise be accomodated with passing objects around. Previously there was a global cache system initialized per-process, but it was initialized in a bit of a roundabout way and wasn't actually reachable from the `wasmtime` crate itself. The changes here remove all global state, refactor many of the internals in the cache system, and makes configuration possible through the `wasmtime` crate. Specifically some changes here are: * Usage of `lazy_static!` and many `static` items in the cache module have all been removed. * Global `cache_config()`, `worker()`, and `init()` functions have all been removed. Instead a `CacheConfig` is a "root object" which internally owns its worker and passing around the `CacheConfig` is required for cache usage. * The `wasmtime::Config` structure has grown options to load and parse cache files at runtime. Currently only loading files is supported, although we can likely eventually support programmatically configuring APIs as well. * Usage of the `spin` crate has been removed and the dependency is removed. * The internal `errors` field of `CacheConfig` is removed, instead changing all relevant methods to return a `Result<()>` instead of storing errors internally. * Tests have all been updated with the new interfaces and APIs. Functionally no real change is intended here. Usage of the `wasmtime` CLI, for example, should still enable the cache by default. * Fix lightbeam compilation
This is the wasmtime-environ crate, which contains the implementations
of the ModuleEnvironment and FuncEnvironment traits from
cranelift-wasm. They effectively
implement an ABI for basic wasm compilation that defines how linear memories
are allocated, how indirect calls work, and other details. They can be used
for JITing, native object files, or other purposes.