Module wasmtime 

Defines a WasmRuntime that uses the Wasmtime JIT to execute.

You can choose a profiling strategy at runtime with environment variable WASMTIME_PROFILING_STRATEGY:

WASMTIME_PROFILING_STRATEGY	Effect
undefined	No profiling
"jitdump"	jitdump profiling
"perfmap"	perfmap profiling
other value	No profiling (warning)

Re-exports

pub use crate::executor::common::runtime_blob::RuntimeBlob;

pub use crate::executor::common::wasm_runtime::HeapAllocStrategy;

pub use crate::executor::common::wasm_runtime::WasmModule;

Structs

Config

DeterministicStackLimit

Knobs for deterministic stack height limiting.

Semantics

WasmtimeRuntime

A WasmModule implementation using wasmtime to compile the runtime module to machine code and execute the compiled code.

Enums

InstantiationStrategy

The instantiation strategy to use for the WASM executor.

Functions

create_runtime

Create a new WasmtimeRuntime given the code. This function performs translation from Wasm to machine code, which can be computationally heavy.

create_runtime_from_artifact^⚠

The same as create_runtime but takes a path to a precompiled artifact, which makes this function considerably faster than create_runtime.

create_runtime_from_artifact_bytes^⚠

The same as create_runtime but takes the bytes of a precompiled artifact, which makes this function considerably faster than create_runtime, but slower than the more optimized create_runtime_from_artifact. This is especially slow on non-Linux Unix systems. Useful in very niche cases.

prepare_runtime_artifact

Takes a RuntimeBlob and precompiles it returning the serialized result of compilation. It can then be used for calling create_runtime avoiding long compilation times.