Crate substrate_wasmtime

Wasmtime's embedding API

This crate contains a high-level API used to interact with WebAssembly modules. The API here is intended to mirror the proposed WebAssembly C API, with small extensions here and there to implement Rust idioms. This crate also defines the actual C API itself for consumption from other languages.

Modules

unix	Unix-specific extension for the wasmtime crate.

Structs

Caller	A structure representing the caller's context when creating a function via Func::wrap.
Config	Global configuration options used to create an Engine and customize its behavior.
Engine	An Engine which is a global context for compilation and management of wasm modules.
Export	An exported WebAssembly value.
ExportType	A descriptor for an exported WebAssembly value.
FrameInfo	Description of a frame in a backtrace for a Trap.
Func	A WebAssembly function which can be called.
FuncType	A descriptor for a function in a WebAssembly module.
Global	A WebAssembly global value which can be read and written to.
GlobalType	A WebAssembly global descriptor.
HostRef	Represents a piece of data located in the host environment.
ImportType	A descriptor for an imported value into a wasm module.
Instance	An instantiated WebAssembly module.
InterruptHandle	A threadsafe handle used to interrupt instances executing within a particular Store.
Limits	Limits of tables/memories where the units of the limits are defined by the table/memory types.
Linker	Structure used to link wasm modules/instances together.
Memory	A WebAssembly linear memory.
MemoryType	A descriptor for a WebAssembly memory type.
Module	A compiled WebAssembly module, ready to be instantiated.
Store	A Store is a shared cache of information between WebAssembly modules.
Table	A WebAssembly table, or an array of values.
TableType	A descriptor for a table in a WebAssembly module.
Trap	A struct representing an aborted instruction execution, with a message indicating the cause.

Enums

AnyRef	Represents an opaque reference to any data within WebAssembly.
Extern	An external item to a WebAssembly module, or a list of what can possibly be exported from a wasm module.
ExternType	A list of all possible types which can be externally referenced from a WebAssembly module.
Mutability	Indicator of whether a global is mutable or not
OptLevel	Possible optimization levels for the Cranelift codegen backend.
ProfilingStrategy	Select which profiling technique to support.
Strategy	Possible Compilation strategies for a wasm module.
Val	Possible runtime values that a WebAssembly module can either consume or produce.
ValType	A list of all possible value types in WebAssembly.

Traits

IntoFunc	Internal trait implemented for all arguments that can be passed to Func::wrap.
LinearMemory	A linear memory. This trait provides an interface for raw memory buffers which are used by wasmtime, e.g. inside ['Memory']. Such buffers are in principle not thread safe. By implementing this trait together with MemoryCreator, one can supply wasmtime with custom allocated host managed memory.
MemoryCreator	A memory creator. Can be used to provide a memory creator to wasmtime which supplies host managed memory.
WasmRet	A trait implemented for types which can be returned from closures passed to Func::wrap and friends.
WasmTy	A trait implemented for types which can be arguments to closures passed to Func::wrap and friends.