b0939f6626
* Remove explicit `S` type parameters This commit removes the explicit `S` type parameter on `Func::typed` and `Instance::get_typed_func`. Historical versions of Rust required that this be a type parameter but recent rustcs support a mixture of explicit type parameters and `impl Trait`. This removes, at callsites, a superfluous `, _` argument which otherwise never needs specification. * Fix mdbook examples
28 lines
1.1 KiB
Rust
28 lines
1.1 KiB
Rust
//! Example of enabling debuginfo for wasm code which allows interactive
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//! debugging of the wasm code. When using recent versions of LLDB
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//! you can debug this executable and set breakpoints in wasm code and look at
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//! the rust source code as input.
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// To execute this example you'll need to run two commands:
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//
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// cargo build -p example-fib-debug-wasm --target wasm32-unknown-unknown
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// cargo run --example fib-debug
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use anyhow::Result;
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use wasmtime::*;
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fn main() -> Result<()> {
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// Load our previously compiled wasm file (built previously with Cargo) and
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// also ensure that we generate debuginfo so this executable can be
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// debugged in GDB.
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let engine = Engine::new(Config::new().debug_info(true))?;
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let mut store = Store::new(&engine, ());
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let module = Module::from_file(&engine, "target/wasm32-unknown-unknown/debug/fib.wasm")?;
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let instance = Instance::new(&mut store, &module, &[])?;
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// Invoke `fib` export
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let fib = instance.get_typed_func::<i32, i32>(&mut store, "fib")?;
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println!("fib(6) = {}", fib.call(&mut store, 6)?);
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Ok(())
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}
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