https://github.com/pangoraw/wasmtime.jl

🏃‍♀️🏃‍♂️ ⏳ A Julia wrapper for wasmtime
https://github.com/pangoraw/wasmtime.jl

julia-package wasm

Last synced: 26 days ago
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🏃‍♀️🏃‍♂️ ⏳ A Julia wrapper for wasmtime

• Host: GitHub
• URL: https://github.com/pangoraw/wasmtime.jl
• Owner: Pangoraw
• License: mit
• Created: 2021-05-20T19:40:23.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-10-03T21:51:30.000Z (about 1 year ago)
• Last Synced: 2024-07-09T19:11:29.243Z (4 months ago)
• Topics: julia-package, wasm
• Language: Julia
• Homepage:
• Size: 135 KB
• Stars: 11
• Watchers: 4
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Wasmtime.jl

A Julia wrapper around the wasmtime runtime to run Web Assembly blobs and libraries from Julia.

## Examples

```julia

julia> using Wasmtime

julia> code = wat"""

           (module

               (memory 1)

               ;; adds two consecutive f32 located at

               ;; address $ptr in memory

               (func $sum (param $ptr i32)

                          (result f32)

                   local.get $ptr

                   f32.load

                   local.get 0

                   i32.const 4

                   i32.add

                   f32.load

                   f32.add

               )

               (export "sum" (func $sum))

               (export "memory" (memory 0))

           )

       """;

julia> engine = WasmEngine(); store = Wasmtime.WasmtimeStore(engine);

julia> module_ = Wasmtime.WasmtimeModule(engine, code);

julia> instance = Wasmtime.WasmtimeInstance(store, module_);

julia> (; memory, sum) = exports(instance);

julia> buf = reinterpret(Float32, memory); # memory is an AbstractVector{UInt8}

julia> buf[1] = 32.5f0; buf[2] = 3f0;

julia> sum(Int32(0))

35.5f0

julia> buf[1] + buf[2]

35.5f0

```

## Usage

Wastime exposes two C api. The first one is the common Web Assembly runtime C api with names starting with `Wasm` in Wasmtime.jl.

The second one is a wasmtime specific api which provides more functionality like WASI imports, fine-grained configuration

of the store features like fuel.

See the [`test` folder](https://github.com/Pangoraw/Wasmtime.jl/tree/main/test) for usage examples.