39e57e3e9a
* Migrate back to `std::` stylistically This commit moves away from idioms such as `alloc::` and `core::` as imports of standard data structures and types. Instead it migrates all crates to uniformly use `std::` for importing standard data structures and types. This also removes the `std` and `core` features from all crates to and removes any conditional checking for `feature = "std"` All of this support was previously added in #407 in an effort to make wasmtime/cranelift "`no_std` compatible". Unfortunately though this change comes at a cost: * The usage of `alloc` and `core` isn't idiomatic. Especially trying to dual between types like `HashMap` from `std` as well as from `hashbrown` causes imports to be surprising in some cases. * Unfortunately there was no CI check that crates were `no_std`, so none of them actually were. Many crates still imported from `std` or depended on crates that used `std`. It's important to note, however, that **this does not mean that wasmtime will not run in embedded environments**. The style of the code today and idioms aren't ready in Rust to support this degree of multiplexing and makes it somewhat difficult to keep up with the style of `wasmtime`. Instead it's intended that embedded runtime support will be added as necessary. Currently only `std` is necessary to build `wasmtime`, and platforms that natively need to execute `wasmtime` will need to use a Rust target that supports `std`. Note though that not all of `std` needs to be supported, but instead much of it could be configured off to return errors, and `wasmtime` would be configured to gracefully handle errors. The goal of this PR is to move `wasmtime` back to idiomatic usage of features/`std`/imports/etc and help development in the short-term. Long-term when platform concerns arise (if any) they can be addressed by moving back to `no_std` crates (but fixing the issues mentioned above) or ensuring that the target in Rust has `std` available. * Start filling out platform support doc
57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
//! Runtime library support for Wasmtime.
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#![allow(improper_ctypes)]
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#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
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#![warn(unused_import_braces)]
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#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
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#![cfg_attr(
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feature = "cargo-clippy",
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allow(clippy::new_without_default, clippy::new_without_default)
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)]
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#![cfg_attr(
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feature = "cargo-clippy",
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warn(
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clippy::float_arithmetic,
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clippy::mut_mut,
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clippy::nonminimal_bool,
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clippy::option_map_unwrap_or,
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clippy::option_map_unwrap_or_else,
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clippy::print_stdout,
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clippy::unicode_not_nfc,
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clippy::use_self
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)
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)]
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mod export;
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mod imports;
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mod instance;
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mod jit_int;
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mod memory;
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mod mmap;
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mod sig_registry;
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mod signalhandlers;
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mod table;
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mod trap_registry;
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mod traphandlers;
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mod vmcontext;
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pub mod libcalls;
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pub use crate::export::Export;
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pub use crate::imports::Imports;
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pub use crate::instance::{InstanceHandle, InstantiationError, LinkError};
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pub use crate::jit_int::GdbJitImageRegistration;
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pub use crate::mmap::Mmap;
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pub use crate::sig_registry::SignatureRegistry;
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pub use crate::signalhandlers::{wasmtime_init_eager, wasmtime_init_finish};
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pub use crate::trap_registry::{get_mut_trap_registry, get_trap_registry, TrapRegistrationGuard};
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pub use crate::traphandlers::{wasmtime_call, wasmtime_call_trampoline};
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pub use crate::vmcontext::{
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VMCallerCheckedAnyfunc, VMContext, VMFunctionBody, VMFunctionImport, VMGlobalDefinition,
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VMGlobalImport, VMInvokeArgument, VMMemoryDefinition, VMMemoryImport, VMSharedSignatureIndex,
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VMTableDefinition, VMTableImport,
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};
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/// Version number of this crate.
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pub const VERSION: &str = env!("CARGO_PKG_VERSION");
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