wasmy 
wasmy, easily customize my wasm app!
features
- Completely shield vm-wasm interaction details
- Simple and flexible ABI, supports freely adding vm and wasm handlers using attribute macros (
#[vm_handle(0)]/#[wasm_handle(0)]) - Provide attribute macro
#[wasm_onload]support to initialize wasm - Support multi-threaded concurrency
- Provides context, layering friendly
- Features a security sandbox
- Use protobuf as the interaction protocol
- Support custom import objects
crates
- wasmy-vm crate : vm dependencies
[dependencies]
wasmy-vm = "0.5"
- wasmy-abi crate : wasm dependencies
[dependencies]
wasmy-abi = "0.5"
- wasmy-macros crate : no direct dependency
wasmy-macros = "0.5"
example
- wasm code (target = "wasm32-wasi")
use rand::random;
use wasmy_abi::*;
use wasmy_abi::test::*;
#[wasm_handle(0)]
fn multiply(ctx: WasmCtx, args: TestArgs) -> Result
{
let rid
=
random
::<
u8>()
as
i32;
println!(
"[Wasm-Simple({})] handle wasm method({}) ctx={:?}, args={{{:?}}}", rid,
0, ctx, args);
let
mut vm_args
= TestArgs
::
new();
vm_args.a
= rid;
vm_args.b
= rid;
let vm_rets: TestRets
= ctx.
call_vm(
0, vm_args)?;
println!(
"[Wasm-Simple({})] call vm method({}): args={{{:?}}}, rets={}", rid,
0, vm_rets, vm_rets.
get_c());
let
mut rets
= TestRets
::
new();
rets.
set_c(args.a
* args.b);
Ok(rets)
}
- vm code
Result
{ let mut rets = TestRets::new(); rets.set_c(args.a + args.b); Ok(rets) } // more #[vm_handle(i32)] fn ... }">
use wasmy_vm::*; use crate::test::{TestArgs, TestRets}; ... fn main() { link_mod(); println!("wasmy, easily customize my wasm app!"); ... let wasm_caller = load_wasm(wasm_path).unwrap(); let mut data = TestArgs::new(); data.set_a(2); data.set_b(5); for i in 1..=3 { let res: TestRets = wasm_caller.call(0, data.clone()).unwrap(); println!("NO.{}: {}+{}={}", i, data.get_a(), data.get_b(), res.get_c()) } } // Make sure the mod is linked fn link_mod() { #[vm_handle(0)] fn add(args: TestArgs) -> Result{ let mut rets = TestRets :: new(); rets. set_c(args.a + args.b); Ok(rets) } // more #[vm_handle(i32)] fn ... }
test simple example
- raw cargo cmd:
$ rustup target add wasm32-wasi
$ cargo +nightly build --target=wasm32-wasi --example=simple
$ cargo +nightly run --example=svm -- ../../wasm32-wasi/debug/examples/simple.wasm
- alias cargo cmd:
$ rustup target add wasm32-wasi
$ cargo +nightly wasm simple
$ cargo +nightly svm simple
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