04bf6e5bbb
Some recent refactorings accidentally had a local `Store` on the stack when a longjmp was initiated, bypassing its destructor and causing `Store` to leak. Closes #2802
622 lines
19 KiB
Rust
622 lines
19 KiB
Rust
use anyhow::Result;
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use std::cell::Cell;
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use std::rc::Rc;
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use std::sync::atomic::{AtomicUsize, Ordering::SeqCst};
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use wasmtime::*;
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#[test]
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fn func_constructors() {
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let store = Store::default();
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Func::wrap(&store, || {});
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Func::wrap(&store, |_: i32| {});
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Func::wrap(&store, |_: i32, _: i64| {});
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Func::wrap(&store, |_: f32, _: f64| {});
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Func::wrap(&store, || -> i32 { 0 });
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Func::wrap(&store, || -> i64 { 0 });
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Func::wrap(&store, || -> f32 { 0.0 });
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Func::wrap(&store, || -> f64 { 0.0 });
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Func::wrap(&store, || -> Option<ExternRef> { None });
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Func::wrap(&store, || -> Option<Func> { None });
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Func::wrap(&store, || -> Result<(), Trap> { loop {} });
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Func::wrap(&store, || -> Result<i32, Trap> { loop {} });
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Func::wrap(&store, || -> Result<i64, Trap> { loop {} });
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Func::wrap(&store, || -> Result<f32, Trap> { loop {} });
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Func::wrap(&store, || -> Result<f64, Trap> { loop {} });
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Func::wrap(&store, || -> Result<Option<ExternRef>, Trap> { loop {} });
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Func::wrap(&store, || -> Result<Option<Func>, Trap> { loop {} });
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}
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#[test]
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fn dtor_runs() {
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static HITS: AtomicUsize = AtomicUsize::new(0);
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struct A;
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impl Drop for A {
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fn drop(&mut self) {
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HITS.fetch_add(1, SeqCst);
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}
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}
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let store = Store::default();
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let a = A;
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assert_eq!(HITS.load(SeqCst), 0);
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Func::wrap(&store, move || {
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drop(&a);
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});
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drop(store);
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assert_eq!(HITS.load(SeqCst), 1);
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}
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#[test]
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fn dtor_delayed() -> Result<()> {
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static HITS: AtomicUsize = AtomicUsize::new(0);
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struct A;
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impl Drop for A {
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fn drop(&mut self) {
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HITS.fetch_add(1, SeqCst);
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}
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}
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let store = Store::default();
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let a = A;
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let func = Func::wrap(&store, move || drop(&a));
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assert_eq!(HITS.load(SeqCst), 0);
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let wasm = wat::parse_str(r#"(import "" "" (func))"#)?;
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let module = Module::new(store.engine(), &wasm)?;
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let instance = Instance::new(&store, &module, &[func.into()])?;
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assert_eq!(HITS.load(SeqCst), 0);
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drop((instance, module, store));
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assert_eq!(HITS.load(SeqCst), 1);
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Ok(())
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}
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#[test]
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fn signatures_match() {
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let store = Store::default();
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let f = Func::wrap(&store, || {});
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assert_eq!(f.ty().params().collect::<Vec<_>>(), &[]);
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assert_eq!(f.param_arity(), 0);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[]);
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assert_eq!(f.result_arity(), 0);
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let f = Func::wrap(&store, || -> i32 { loop {} });
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assert_eq!(f.ty().params().collect::<Vec<_>>(), &[]);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[ValType::I32]);
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let f = Func::wrap(&store, || -> i64 { loop {} });
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assert_eq!(f.ty().params().collect::<Vec<_>>(), &[]);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[ValType::I64]);
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let f = Func::wrap(&store, || -> f32 { loop {} });
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assert_eq!(f.ty().params().collect::<Vec<_>>(), &[]);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[ValType::F32]);
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let f = Func::wrap(&store, || -> f64 { loop {} });
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assert_eq!(f.ty().params().collect::<Vec<_>>(), &[]);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[ValType::F64]);
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let f = Func::wrap(
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&store,
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|_: f32, _: f64, _: i32, _: i64, _: i32, _: Option<ExternRef>, _: Option<Func>| -> f64 {
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loop {}
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},
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);
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assert_eq!(
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f.ty().params().collect::<Vec<_>>(),
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&[
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ValType::F32,
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ValType::F64,
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ValType::I32,
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ValType::I64,
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ValType::I32,
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ValType::ExternRef,
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ValType::FuncRef,
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]
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);
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assert_eq!(f.ty().results().collect::<Vec<_>>(), &[ValType::F64]);
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}
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#[test]
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fn import_works() -> Result<()> {
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static HITS: AtomicUsize = AtomicUsize::new(0);
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let wasm = wat::parse_str(
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r#"
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(import "" "" (func))
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(import "" "" (func (param i32) (result i32)))
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(import "" "" (func (param i32) (param i64)))
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(import "" "" (func (param i32 i64 i32 f32 f64 externref funcref)))
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(func (export "run") (param externref funcref)
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call 0
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i32.const 0
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call 1
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i32.const 1
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i32.add
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i64.const 3
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call 2
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i32.const 100
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i64.const 200
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i32.const 300
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f32.const 400
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f64.const 500
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local.get 0
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local.get 1
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call 3
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)
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"#,
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)?;
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let mut config = Config::new();
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config.wasm_reference_types(true);
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let engine = Engine::new(&config)?;
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let store = Store::new(&engine);
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let module = Module::new(&engine, &wasm)?;
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let instance = Instance::new(
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&store,
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&module,
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&[
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Func::wrap(&store, || {
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assert_eq!(HITS.fetch_add(1, SeqCst), 0);
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})
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.into(),
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Func::wrap(&store, |x: i32| -> i32 {
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assert_eq!(x, 0);
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assert_eq!(HITS.fetch_add(1, SeqCst), 1);
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1
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})
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.into(),
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Func::wrap(&store, |x: i32, y: i64| {
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assert_eq!(x, 2);
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assert_eq!(y, 3);
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assert_eq!(HITS.fetch_add(1, SeqCst), 2);
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})
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.into(),
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Func::wrap(
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&store,
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|a: i32, b: i64, c: i32, d: f32, e: f64, f: Option<ExternRef>, g: Option<Func>| {
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assert_eq!(a, 100);
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assert_eq!(b, 200);
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assert_eq!(c, 300);
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assert_eq!(d, 400.0);
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assert_eq!(e, 500.0);
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assert_eq!(
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f.as_ref().unwrap().data().downcast_ref::<String>().unwrap(),
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"hello"
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);
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assert_eq!(g.as_ref().unwrap().call(&[]).unwrap()[0].unwrap_i32(), 42);
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assert_eq!(HITS.fetch_add(1, SeqCst), 3);
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},
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)
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.into(),
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],
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)?;
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let run = instance.get_func("run").unwrap();
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run.call(&[
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Val::ExternRef(Some(ExternRef::new("hello".to_string()))),
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Val::FuncRef(Some(Func::wrap(&store, || -> i32 { 42 }))),
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])?;
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assert_eq!(HITS.load(SeqCst), 4);
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Ok(())
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}
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#[test]
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fn trap_smoke() -> Result<()> {
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let store = Store::default();
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let f = Func::wrap(&store, || -> Result<(), Trap> { Err(Trap::new("test")) });
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let err = f.call(&[]).unwrap_err().downcast::<Trap>()?;
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assert!(err.to_string().contains("test"));
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assert!(err.i32_exit_status().is_none());
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Ok(())
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}
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#[test]
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fn trap_import() -> Result<()> {
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let wasm = wat::parse_str(
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r#"
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(import "" "" (func))
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(start 0)
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"#,
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)?;
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let store = Store::default();
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let module = Module::new(store.engine(), &wasm)?;
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let trap = Instance::new(
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&store,
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&module,
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&[Func::wrap(&store, || -> Result<(), Trap> { Err(Trap::new("foo")) }).into()],
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)
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.err()
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.unwrap()
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.downcast::<Trap>()?;
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assert!(trap.to_string().contains("foo"));
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Ok(())
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}
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#[test]
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fn get_from_wrapper() {
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let store = Store::default();
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let f = Func::wrap(&store, || {});
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assert!(f.typed::<(), ()>().is_ok());
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assert!(f.typed::<(), i32>().is_err());
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assert!(f.typed::<(), ()>().is_ok());
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assert!(f.typed::<i32, ()>().is_err());
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assert!(f.typed::<i32, i32>().is_err());
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assert!(f.typed::<(i32, i32), ()>().is_err());
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assert!(f.typed::<(i32, i32), i32>().is_err());
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let f = Func::wrap(&store, || -> i32 { loop {} });
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assert!(f.typed::<(), i32>().is_ok());
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let f = Func::wrap(&store, || -> f32 { loop {} });
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assert!(f.typed::<(), f32>().is_ok());
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let f = Func::wrap(&store, || -> f64 { loop {} });
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assert!(f.typed::<(), f64>().is_ok());
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let f = Func::wrap(&store, || -> Option<ExternRef> { loop {} });
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assert!(f.typed::<(), Option<ExternRef>>().is_ok());
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let f = Func::wrap(&store, || -> Option<Func> { loop {} });
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assert!(f.typed::<(), Option<Func>>().is_ok());
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let f = Func::wrap(&store, |_: i32| {});
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assert!(f.typed::<i32, ()>().is_ok());
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assert!(f.typed::<i64, ()>().is_err());
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assert!(f.typed::<f32, ()>().is_err());
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assert!(f.typed::<f64, ()>().is_err());
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let f = Func::wrap(&store, |_: i64| {});
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assert!(f.typed::<i64, ()>().is_ok());
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let f = Func::wrap(&store, |_: f32| {});
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assert!(f.typed::<f32, ()>().is_ok());
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let f = Func::wrap(&store, |_: f64| {});
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assert!(f.typed::<f64, ()>().is_ok());
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let f = Func::wrap(&store, |_: Option<ExternRef>| {});
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assert!(f.typed::<Option<ExternRef>, ()>().is_ok());
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let f = Func::wrap(&store, |_: Option<Func>| {});
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assert!(f.typed::<Option<Func>, ()>().is_ok());
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}
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#[test]
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fn get_from_signature() {
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let store = Store::default();
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let ty = FuncType::new(None, None);
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let f = Func::new(&store, ty, |_, _, _| panic!());
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assert!(f.typed::<(), ()>().is_ok());
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assert!(f.typed::<(), i32>().is_err());
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assert!(f.typed::<i32, ()>().is_err());
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let ty = FuncType::new(Some(ValType::I32), Some(ValType::F64));
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let f = Func::new(&store, ty, |_, _, _| panic!());
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assert!(f.typed::<(), ()>().is_err());
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assert!(f.typed::<(), i32>().is_err());
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assert!(f.typed::<i32, ()>().is_err());
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assert!(f.typed::<i32, f64>().is_ok());
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}
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#[test]
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fn get_from_module() -> anyhow::Result<()> {
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let store = Store::default();
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let module = Module::new(
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store.engine(),
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r#"
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(module
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(func (export "f0"))
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(func (export "f1") (param i32))
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(func (export "f2") (result i32)
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i32.const 0)
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)
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"#,
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)?;
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let instance = Instance::new(&store, &module, &[])?;
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let f0 = instance.get_func("f0").unwrap();
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assert!(f0.typed::<(), ()>().is_ok());
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assert!(f0.typed::<(), i32>().is_err());
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let f1 = instance.get_func("f1").unwrap();
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assert!(f1.typed::<(), ()>().is_err());
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assert!(f1.typed::<i32, ()>().is_ok());
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assert!(f1.typed::<i32, f32>().is_err());
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let f2 = instance.get_func("f2").unwrap();
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assert!(f2.typed::<(), ()>().is_err());
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assert!(f2.typed::<(), i32>().is_ok());
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assert!(f2.typed::<i32, ()>().is_err());
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assert!(f2.typed::<i32, f32>().is_err());
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Ok(())
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}
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#[test]
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fn call_wrapped_func() -> Result<()> {
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let store = Store::default();
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let f = Func::wrap(&store, |a: i32, b: i64, c: f32, d: f64| {
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assert_eq!(a, 1);
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assert_eq!(b, 2);
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assert_eq!(c, 3.0);
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assert_eq!(d, 4.0);
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});
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f.call(&[Val::I32(1), Val::I64(2), 3.0f32.into(), 4.0f64.into()])?;
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f.typed::<(i32, i64, f32, f64), ()>()?
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.call((1, 2, 3.0, 4.0))?;
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let f = Func::wrap(&store, || 1i32);
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let results = f.call(&[])?;
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assert_eq!(results.len(), 1);
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assert_eq!(results[0].unwrap_i32(), 1);
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assert_eq!(f.typed::<(), i32>()?.call(())?, 1);
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let f = Func::wrap(&store, || 2i64);
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let results = f.call(&[])?;
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assert_eq!(results.len(), 1);
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assert_eq!(results[0].unwrap_i64(), 2);
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assert_eq!(f.typed::<(), i64>()?.call(())?, 2);
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let f = Func::wrap(&store, || 3.0f32);
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let results = f.call(&[])?;
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assert_eq!(results.len(), 1);
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assert_eq!(results[0].unwrap_f32(), 3.0);
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assert_eq!(f.typed::<(), f32>()?.call(())?, 3.0);
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let f = Func::wrap(&store, || 4.0f64);
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let results = f.call(&[])?;
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assert_eq!(results.len(), 1);
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assert_eq!(results[0].unwrap_f64(), 4.0);
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assert_eq!(f.typed::<(), f64>()?.call(())?, 4.0);
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Ok(())
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}
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#[test]
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fn caller_memory() -> anyhow::Result<()> {
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let store = Store::default();
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let f = Func::wrap(&store, |c: Caller<'_>| {
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assert!(c.get_export("x").is_none());
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assert!(c.get_export("y").is_none());
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assert!(c.get_export("z").is_none());
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});
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f.call(&[])?;
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let f = Func::wrap(&store, |c: Caller<'_>| {
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assert!(c.get_export("x").is_none());
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});
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let module = Module::new(
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store.engine(),
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r#"
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(module
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(import "" "" (func $f))
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(start $f)
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)
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"#,
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)?;
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Instance::new(&store, &module, &[f.into()])?;
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let f = Func::wrap(&store, |c: Caller<'_>| {
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assert!(c.get_export("memory").is_some());
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});
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let module = Module::new(
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store.engine(),
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r#"
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(module
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(import "" "" (func $f))
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(memory (export "memory") 1)
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(start $f)
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)
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"#,
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)?;
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Instance::new(&store, &module, &[f.into()])?;
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let f = Func::wrap(&store, |c: Caller<'_>| {
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assert!(c.get_export("m").is_some());
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assert!(c.get_export("f").is_some());
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assert!(c.get_export("g").is_none());
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assert!(c.get_export("t").is_none());
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});
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let module = Module::new(
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store.engine(),
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r#"
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(module
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(import "" "" (func $f))
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(memory (export "m") 1)
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(func (export "f"))
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(global (export "g") i32 (i32.const 0))
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(table (export "t") 1 funcref)
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(start $f)
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)
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"#,
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)?;
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Instance::new(&store, &module, &[f.into()])?;
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Ok(())
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}
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#[test]
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fn func_write_nothing() -> anyhow::Result<()> {
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let store = Store::default();
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let ty = FuncType::new(None, Some(ValType::I32));
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let f = Func::new(&store, ty, |_, _, _| Ok(()));
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let err = f.call(&[]).unwrap_err().downcast::<Trap>()?;
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assert!(err
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.to_string()
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.contains("function attempted to return an incompatible value"));
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Ok(())
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}
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#[test]
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// Note: Cranelift only supports refrerence types (used in the wasm in this
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// test) on x64.
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#[cfg(target_arch = "x86_64")]
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fn return_cross_store_value() -> anyhow::Result<()> {
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let wasm = wat::parse_str(
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r#"
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(import "" "" (func (result funcref)))
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(func (export "run") (result funcref)
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call 0
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)
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"#,
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)?;
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let mut config = Config::new();
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config.wasm_reference_types(true);
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let engine = Engine::new(&config)?;
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let module = Module::new(&engine, &wasm)?;
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let store1 = Store::new(&engine);
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let store2 = Store::new(&engine);
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let store2_func = Func::wrap(&store2, || {});
|
|
let return_cross_store_func = Func::wrap(&store1, move || Some(store2_func.clone()));
|
|
|
|
let instance = Instance::new(&store1, &module, &[return_cross_store_func.into()])?;
|
|
|
|
let run = instance.get_func("run").unwrap();
|
|
let result = run.call(&[]);
|
|
assert!(result.is_err());
|
|
assert!(result.unwrap_err().to_string().contains("cross-`Store`"));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
// Note: Cranelift only supports refrerence types (used in the wasm in this
|
|
// test) on x64.
|
|
#[cfg(target_arch = "x86_64")]
|
|
fn pass_cross_store_arg() -> anyhow::Result<()> {
|
|
let mut config = Config::new();
|
|
config.wasm_reference_types(true);
|
|
let engine = Engine::new(&config)?;
|
|
|
|
let store1 = Store::new(&engine);
|
|
let store2 = Store::new(&engine);
|
|
|
|
let store1_func = Func::wrap(&store1, |_: Option<Func>| {});
|
|
let store2_func = Func::wrap(&store2, || {});
|
|
|
|
// Using regular `.call` fails with cross-Store arguments.
|
|
assert!(store1_func
|
|
.call(&[Val::FuncRef(Some(store2_func.clone()))])
|
|
.is_err());
|
|
|
|
// And using `.get` followed by a function call also fails with cross-Store
|
|
// arguments.
|
|
let f = store1_func.typed::<Option<Func>, ()>()?;
|
|
let result = f.call(Some(store2_func));
|
|
assert!(result.is_err());
|
|
assert!(result.unwrap_err().to_string().contains("cross-`Store`"));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn externref_signature_no_reference_types() -> anyhow::Result<()> {
|
|
let store = Store::default();
|
|
Func::wrap(&store, |_: Option<Func>| {});
|
|
Func::new(
|
|
&store,
|
|
FuncType::new(
|
|
[ValType::FuncRef, ValType::ExternRef].iter().cloned(),
|
|
[ValType::FuncRef, ValType::ExternRef].iter().cloned(),
|
|
),
|
|
|_, _, _| Ok(()),
|
|
);
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn trampolines_always_valid() -> anyhow::Result<()> {
|
|
let func = {
|
|
// Compile two modules up front
|
|
let store = Store::default();
|
|
let module1 = Module::new(store.engine(), "(module (import \"\" \"\" (func)))")?;
|
|
let module2 = Module::new(store.engine(), "(module (func (export \"\")))")?;
|
|
// Start instantiating the first module, but this will fail.
|
|
// Historically this registered the module's trampolines with `Store`
|
|
// before the failure, but then after the failure the `Store` didn't
|
|
// hold onto the trampoline.
|
|
drop(Instance::new(&store, &module1, &[]));
|
|
drop(module1);
|
|
|
|
// Then instantiate another module which has the same function type (no
|
|
// parameters or results) which tries to use the trampoline defined in
|
|
// the previous module. Then we extract the function and, in another
|
|
// scope where everything is dropped, we call the func.
|
|
let i = Instance::new(&store, &module2, &[])?;
|
|
i.get_func("").unwrap()
|
|
};
|
|
|
|
// ... and no segfaults! right? right? ...
|
|
func.call(&[])?;
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn typed_multiple_results() -> anyhow::Result<()> {
|
|
let store = Store::default();
|
|
let module = Module::new(
|
|
store.engine(),
|
|
r#"
|
|
(module
|
|
(func (export "f0") (result i32 i64)
|
|
i32.const 0
|
|
i64.const 1)
|
|
(func (export "f1") (param i32 i32 i32) (result f32 f64)
|
|
f32.const 2
|
|
f64.const 3)
|
|
)
|
|
|
|
"#,
|
|
)?;
|
|
let instance = Instance::new(&store, &module, &[])?;
|
|
let f0 = instance.get_func("f0").unwrap();
|
|
assert!(f0.typed::<(), ()>().is_err());
|
|
assert!(f0.typed::<(), (i32, f32)>().is_err());
|
|
assert!(f0.typed::<(), i32>().is_err());
|
|
assert_eq!(f0.typed::<(), (i32, i64)>()?.call(())?, (0, 1));
|
|
|
|
let f1 = instance.get_func("f1").unwrap();
|
|
assert_eq!(
|
|
f1.typed::<(i32, i32, i32), (f32, f64)>()?.call((1, 2, 3))?,
|
|
(2., 3.)
|
|
);
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn trap_doesnt_leak() -> anyhow::Result<()> {
|
|
struct Canary(Rc<Cell<bool>>);
|
|
|
|
impl Drop for Canary {
|
|
fn drop(&mut self) {
|
|
self.0.set(true);
|
|
}
|
|
}
|
|
|
|
let store = Store::default();
|
|
|
|
// test that `Func::wrap` is correct
|
|
let canary1 = Canary(Rc::new(Cell::new(false)));
|
|
let dtor1_run = canary1.0.clone();
|
|
let f1 = Func::wrap(&store, move || -> Result<(), Trap> {
|
|
drop(&canary1);
|
|
Err(Trap::new(""))
|
|
});
|
|
assert!(f1.typed::<(), ()>()?.call(()).is_err());
|
|
assert!(f1.call(&[]).is_err());
|
|
|
|
// test that `Func::new` is correct
|
|
let canary2 = Canary(Rc::new(Cell::new(false)));
|
|
let dtor2_run = canary2.0.clone();
|
|
let f2 = Func::new(&store, FuncType::new(None, None), move |_, _, _| {
|
|
drop(&canary2);
|
|
Err(Trap::new(""))
|
|
});
|
|
assert!(f2.typed::<(), ()>()?.call(()).is_err());
|
|
assert!(f2.call(&[]).is_err());
|
|
|
|
// drop everything and ensure dtors are run
|
|
drop((store, f1, f2));
|
|
assert!(dtor1_run.get());
|
|
assert!(dtor2_run.get());
|
|
Ok(())
|
|
}
|