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Remove the need for HostRef<Store> (#771)

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* Remove the need for `HostRef<Store>`

This commit goes through the public API of the `wasmtime` crate and
removes the need for `HostRef<Store>`, as discussed in #708. This commit
is accompanied with a few changes:

* The `Store` type now also implements `Default`, creating a new
  `Engine` with default settings and returning that.

* The `Store` type now implements `Clone`, and is documented as being a
  "cheap clone" aka being reference counted. As before there is no
  supported way to create a deep clone of a `Store`.

* All APIs take/return `&Store` or `Store` instead of `HostRef<Store>`,
  and `HostRef<T>` is left as purely a detail of the C API.

* The `global_exports` function is tagged as `#[doc(hidden)]` for now
  while we await its removal.

* The `Store` type is not yet `Send` nor `Sync` due to the usage of
  `global_exports`, but it is intended to become so eventually.

* Touch up comments on some examples

* Run rustfmt
This commit is contained in:
Alex Crichton
2020-01-07 16:29:44 -06:00
committed by GitHub
parent 296ebc46fd
commit 045d6a7310
31 changed files with 163 additions and 155 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
crates/api/examples/gcd.rs
View File

@@ -1,7 +1,6 @@
//! Example of instantiating of the WebAssembly module and
//! invoking its exported function.
use anyhow::{format_err, Result};
use wasmtime::*;
const WAT: &str = r#"
@@ -34,14 +33,11 @@ const WAT: &str = r#"
)
"#;
fn main() -> Result<()> {
fn main() -> anyhow::Result<()> {
// Load our WebAssembly (parsed WAT in our case), and then load it into a
// `Module` which is attached to a `Store` cache.
let wasm = wat::parse_str(WAT)?;
// Instantiate engine and store.
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
// Load a module.
let store = Store::default();
let module = HostRef::new(Module::new(&store, &wasm)?);
// Find index of the `gcd` export.
@@ -59,10 +55,7 @@ fn main() -> Result<()> {
// Invoke `gcd` export
let gcd = instance.exports()[gcd_index].func().expect("gcd");
let result = gcd
.borrow()
.call(&[Val::from(6i32), Val::from(27i32)])
.map_err(|e| format_err!("call error: {:?}", e))?;
let result = gcd.borrow().call(&[Val::from(6i32), Val::from(27i32)])?;
println!("{:?}", result);
Ok(())

15
crates/api/examples/hello.rs
View File

@@ -1,6 +1,6 @@
//! Translation of hello example
use anyhow::{ensure, format_err, Context as _, Result};
use anyhow::{ensure, Context as _, Result};
use std::rc::Rc;
use wasmtime::*;
@@ -15,11 +15,11 @@ impl Callable for HelloCallback {
}
fn main() -> Result<()> {
// Configure the initial compilation environment, creating more global
// structures such as an `Engine` and a `Store`.
// Configure the initial compilation environment, creating the global
// `Store` structure. Note that you can also tweak configuration settings
// with a `Config` and an `Engine` if desired.
println!("Initializing...");
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
// Next upload the `*.wasm` binary file, which in this case we're going to
// be parsing an inline text format into a binary.
@@ -59,10 +59,7 @@ fn main() -> Result<()> {
// And last but not least we can call it!
println!("Calling export...");
run_func
.borrow()
.call(&[])
.map_err(|e| format_err!("> Error calling function: {:?}", e))?;
run_func.borrow().call(&[])?;
println!("Done.");
Ok(())

3
crates/api/examples/memory.rs
View File

@@ -62,8 +62,7 @@ macro_rules! call {
fn main() -> Result<(), Error> {
// Initialize.
println!("Initializing...");
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
// Load binary.
println!("Loading binary...");

2
crates/api/examples/multi.rs
View File

@@ -46,7 +46,7 @@ fn main() -> Result<()> {
// Initialize.
println!("Initializing...");
let engine = Engine::new(Config::new().wasm_multi_value(true));
let store = HostRef::new(Store::new(&engine));
let store = Store::new(&engine);
// Load binary.
println!("Loading binary...");

14
crates/api/src/callable.rs
View File

@@ -43,8 +43,7 @@ use wasmtime_runtime::Export;
/// "#)?;
///
/// // Initialise environment and our module.
/// let engine = wasmtime::Engine::default();
/// let store = HostRef::new(wasmtime::Store::new(&engine));
/// let store = wasmtime::Store::default();
/// let module = HostRef::new(wasmtime::Module::new(&store, &binary)?);
///
/// // Define the type of the function we're going to call.
@@ -103,13 +102,13 @@ pub(crate) trait WrappedCallable {
}
pub(crate) struct WasmtimeFn {
store: HostRef<Store>,
store: Store,
instance: InstanceHandle,
export: Export,
}
impl WasmtimeFn {
pub fn new(store: &HostRef<Store>, instance: InstanceHandle, export: Export) -> WasmtimeFn {
pub fn new(store: &Store, instance: InstanceHandle, export: Export) -> WasmtimeFn {
WasmtimeFn {
store: store.clone(),
instance,
@@ -146,7 +145,6 @@ impl WrappedCallable for WasmtimeFn {
// Get the trampoline to call for this function.
let exec_code_buf = self
.store
.borrow_mut()
.context()
.compiler()
.get_published_trampoline(body, &signature, value_size)
@@ -191,11 +189,7 @@ pub struct NativeCallable {
}
impl NativeCallable {
pub(crate) fn new(
callable: Rc<dyn Callable + 'static>,
ft: &FuncType,
store: &HostRef<Store>,
) -> Self {
pub(crate) fn new(callable: Rc<dyn Callable + 'static>, ft: &FuncType, store: &Store) -> Self {
let (instance, export) =
generate_func_export(ft, &callable, store).expect("generated func");
NativeCallable {

2
crates/api/src/context.rs
View File

@@ -30,7 +30,7 @@ impl Context {
self.debug_info
}
pub(crate) fn compiler(&mut self) -> RefMut<Compiler> {
pub(crate) fn compiler(&self) -> RefMut<Compiler> {
self.compiler.borrow_mut()
}
}

35
crates/api/src/externals.rs
View File

@@ -66,7 +66,7 @@ impl Extern {
}
pub(crate) fn from_wasmtime_export(
store: &HostRef<Store>,
store: &Store,
instance_handle: InstanceHandle,
export: wasmtime_runtime::Export,
) -> Extern {
@@ -112,19 +112,19 @@ impl From<HostRef<Table>> for Extern {
}
pub struct Func {
_store: HostRef<Store>,
_store: Store,
callable: Rc<dyn WrappedCallable + 'static>,
r#type: FuncType,
}
impl Func {
pub fn new(store: &HostRef<Store>, ty: FuncType, callable: Rc<dyn Callable + 'static>) -> Self {
pub fn new(store: &Store, ty: FuncType, callable: Rc<dyn Callable + 'static>) -> Self {
let callable = Rc::new(NativeCallable::new(callable, &ty, &store));
Func::from_wrapped(store, ty, callable)
}
fn from_wrapped(
store: &HostRef<Store>,
store: &Store,
r#type: FuncType,
callable: Rc<dyn WrappedCallable + 'static>,
) -> Func {
@@ -159,7 +159,7 @@ impl Func {
pub(crate) fn from_wasmtime_function(
export: wasmtime_runtime::Export,
store: &HostRef<Store>,
store: &Store,
instance_handle: InstanceHandle,
) -> Self {
let ty = if let wasmtime_runtime::Export::Function { signature, .. } = &export {
@@ -179,7 +179,7 @@ impl fmt::Debug for Func {
}
pub struct Global {
_store: HostRef<Store>,
_store: Store,
r#type: GlobalType,
wasmtime_export: wasmtime_runtime::Export,
#[allow(dead_code)]
@@ -187,7 +187,7 @@ pub struct Global {
}
impl Global {
pub fn new(store: &HostRef<Store>, r#type: GlobalType, val: Val) -> Global {
pub fn new(store: &Store, r#type: GlobalType, val: Val) -> Global {
let (wasmtime_export, wasmtime_state) =
generate_global_export(&r#type, val).expect("generated global");
Global {
@@ -246,10 +246,7 @@ impl Global {
&self.wasmtime_export
}
pub(crate) fn from_wasmtime_global(
export: wasmtime_runtime::Export,
store: &HostRef<Store>,
) -> Global {
pub(crate) fn from_wasmtime_global(export: wasmtime_runtime::Export, store: &Store) -> Global {
let global = if let wasmtime_runtime::Export::Global { ref global, .. } = export {
global
} else {
@@ -266,7 +263,7 @@ impl Global {
}
pub struct Table {
store: HostRef<Store>,
store: Store,
r#type: TableType,
wasmtime_handle: InstanceHandle,
wasmtime_export: wasmtime_runtime::Export,
@@ -274,7 +271,7 @@ pub struct Table {
fn get_table_item(
handle: &InstanceHandle,
store: &HostRef<Store>,
store: &Store,
table_index: wasm::DefinedTableIndex,
item_index: u32,
) -> Val {
@@ -287,7 +284,7 @@ fn get_table_item(
fn set_table_item(
handle: &mut InstanceHandle,
store: &HostRef<Store>,
store: &Store,
table_index: wasm::DefinedTableIndex,
item_index: u32,
val: Val,
@@ -302,7 +299,7 @@ fn set_table_item(
}
impl Table {
pub fn new(store: &HostRef<Store>, r#type: TableType, init: Val) -> Table {
pub fn new(store: &Store, r#type: TableType, init: Val) -> Table {
match r#type.element() {
ValType::FuncRef => (),
_ => panic!("table is not for funcref"),
@@ -387,7 +384,7 @@ impl Table {
pub(crate) fn from_wasmtime_table(
export: wasmtime_runtime::Export,
store: &HostRef<Store>,
store: &Store,
instance_handle: wasmtime_runtime::InstanceHandle,
) -> Table {
let table = if let wasmtime_runtime::Export::Table { ref table, .. } = export {
@@ -406,14 +403,14 @@ impl Table {
}
pub struct Memory {
_store: HostRef<Store>,
_store: Store,
r#type: MemoryType,
wasmtime_handle: InstanceHandle,
wasmtime_export: wasmtime_runtime::Export,
}
impl Memory {
pub fn new(store: &HostRef<Store>, r#type: MemoryType) -> Memory {
pub fn new(store: &Store, r#type: MemoryType) -> Memory {
let (wasmtime_handle, wasmtime_export) =
generate_memory_export(&r#type).expect("generated memory");
Memory {
@@ -473,7 +470,7 @@ impl Memory {
pub(crate) fn from_wasmtime_memory(
export: wasmtime_runtime::Export,
store: &HostRef<Store>,
store: &Store,
instance_handle: wasmtime_runtime::InstanceHandle,
) -> Memory {
let memory = if let wasmtime_runtime::Export::Memory { ref memory, .. } = export {

12
crates/api/src/instance.rs
View File

@@ -30,7 +30,7 @@ impl Resolver for SimpleResolver {
pub fn instantiate_in_context(
data: &[u8],
imports: Vec<(String, String, Extern)>,
mut context: Context,
context: Context,
exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
) -> Result<(InstanceHandle, HashSet<Context>), Error> {
let mut contexts = HashSet::new();
@@ -70,12 +70,12 @@ pub struct Instance {
impl Instance {
pub fn new(
store: &HostRef<Store>,
store: &Store,
module: &HostRef<Module>,
externs: &[Extern],
) -> Result<Instance, Error> {
let context = store.borrow_mut().context().clone();
let exports = store.borrow_mut().global_exports().clone();
let context = store.context().clone();
let exports = store.global_exports().clone();
let imports = module
.borrow()
.imports()
@@ -131,7 +131,7 @@ impl Instance {
Some(&self.exports()[i])
}
pub fn from_handle(store: &HostRef<Store>, instance_handle: InstanceHandle) -> Instance {
pub fn from_handle(store: &Store, instance_handle: InstanceHandle) -> Instance {
let contexts = HashSet::new();
let mut exports = Vec::new();
@@ -143,7 +143,7 @@ impl Instance {
// HACK ensure all handles, instantiated outside Store, present in
// the store's SignatureRegistry, e.g. WASI instances that are
// imported into this store using the from_handle() method.
let _ = store.borrow_mut().register_wasmtime_signature(signature);
let _ = store.register_wasmtime_signature(signature);
}
let extern_type = ExternType::from_wasmtime_export(&export);
exports_types.push(ExportType::new(name, extern_type));

13
crates/api/src/module.rs
View File

@@ -1,4 +1,3 @@
use crate::r#ref::HostRef;
use crate::runtime::Store;
use crate::types::{
ExportType, ExternType, FuncType, GlobalType, ImportType, Limits, MemoryType, Mutability,
@@ -173,7 +172,7 @@ pub(crate) enum ModuleCodeSource {
#[derive(Clone)]
pub struct Module {
store: HostRef<Store>,
store: Store,
source: ModuleCodeSource,
imports: Box<[ImportType]>,
exports: Box<[ExportType]>,
@@ -182,13 +181,13 @@ pub struct Module {
impl Module {
/// Validate and decode the raw wasm data in `binary` and create a new
/// `Module` in the given `store`.
pub fn new(store: &HostRef<Store>, binary: &[u8]) -> Result<Module> {
pub fn new(store: &Store, binary: &[u8]) -> Result<Module> {
Self::validate(store, binary)?;
Self::new_unchecked(store, binary)
}
/// Similar to `new`, but does not perform any validation. Only use this
/// on modules which are known to have been validated already!
pub fn new_unchecked(store: &HostRef<Store>, binary: &[u8]) -> Result<Module> {
pub fn new_unchecked(store: &Store, binary: &[u8]) -> Result<Module> {
let (imports, exports) = read_imports_and_exports(binary)?;
Ok(Module {
store: store.clone(),
@@ -203,8 +202,8 @@ impl Module {
_ => None,
}
}
pub fn validate(store: &HostRef<Store>, binary: &[u8]) -> Result<()> {
let features = store.borrow().engine().config.features.clone();
pub fn validate(store: &Store, binary: &[u8]) -> Result<()> {
let features = store.engine().config.features.clone();
let config = ValidatingParserConfig {
operator_config: OperatorValidatorConfig {
enable_threads: features.threads,
@@ -222,7 +221,7 @@ impl Module {
pub fn exports(&self) -> &[ExportType] {
&self.exports
}
pub fn from_exports(store: &HostRef<Store>, exports: Box<[ExportType]>) -> Self {
pub fn from_exports(store: &Store, exports: Box<[ExportType]>) -> Self {
Module {
store: store.clone(),
source: ModuleCodeSource::Unknown,

70
crates/api/src/runtime.rs
View File

@@ -288,12 +288,13 @@ pub enum OptLevel {
///
/// Using `clone` on an `Engine` is a cheap operation. It will not create an
/// entirely new engine, but rather just a new reference to the existing engine.
/// In other words it's a shallow copy, not a deep copy.
///
/// ## Engines and `Default`
///
/// You can create an engine with default settings using `Engine::default()`.
/// This engine will not have any unstable wasm features enabled and will use
/// the default compilation backend configured at this crate's compile time.
/// You can create an engine with default configuration settings using
/// `Engine::default()`. Be sure to consult the documentation of [`Config`] for
/// default settings.
#[derive(Default, Clone)]
pub struct Engine {
pub(crate) config: Arc<Config>,
@@ -311,45 +312,72 @@ impl Engine {
// Store
/// A `Store` is a shared cache of information between WebAssembly modules.
///
/// Each `Module` is compiled into a `Store` and a `Store` is associated with an
/// [`Engine`]. You'll use a `Store` to attach to a number of global items in
/// the production of various items for wasm modules.
///
/// # Stores and `Clone`
///
/// Using `clone` on a `Store` is a cheap operation. It will not create an
/// entirely new store, but rather just a new reference to the existing object.
/// In other words it's a shallow copy, not a deep copy.
///
/// ## Stores and `Default`
///
/// You can create a store with default configuration settings using
/// `Store::default()`. This will create a brand new [`Engine`] with default
/// ocnfiguration (see [`Config`] for more information).
#[derive(Clone)]
pub struct Store {
inner: Rc<StoreInner>,
}
struct StoreInner {
engine: Engine,
context: Context,
global_exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
signature_cache: HashMap<wasmtime_runtime::VMSharedSignatureIndex, ir::Signature>,
signature_cache: RefCell<HashMap<wasmtime_runtime::VMSharedSignatureIndex, ir::Signature>>,
}
impl Store {
/// Creates a new store to be associated with the given [`Engine`].
pub fn new(engine: &Engine) -> Store {
Store {
engine: engine.clone(),
context: Context::new(&engine.config),
global_exports: Rc::new(RefCell::new(HashMap::new())),
signature_cache: HashMap::new(),
inner: Rc::new(StoreInner {
engine: engine.clone(),
context: Context::new(&engine.config),
global_exports: Rc::new(RefCell::new(HashMap::new())),
signature_cache: RefCell::new(HashMap::new()),
}),
}
}
/// Returns the [`Engine`] that this store is associated with.
pub fn engine(&self) -> &Engine {
&self.engine
&self.inner.engine
}
pub(crate) fn context(&mut self) -> &mut Context {
&mut self.context
pub(crate) fn context(&self) -> &Context {
&self.inner.context
}
// Specific to wasmtime: hack to pass memory around to wasi
#[doc(hidden)]
pub fn global_exports(
&self,
) -> &Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>> {
&self.global_exports
&self.inner.global_exports
}
pub(crate) fn register_wasmtime_signature(
&mut self,
&self,
signature: &ir::Signature,
) -> wasmtime_runtime::VMSharedSignatureIndex {
use std::collections::hash_map::Entry;
let index = self.context().compiler().signatures().register(signature);
match self.signature_cache.entry(index) {
match self.inner.signature_cache.borrow_mut().entry(index) {
Entry::Vacant(v) => {
v.insert(signature.clone());
}
@@ -361,8 +389,18 @@ impl Store {
pub(crate) fn lookup_wasmtime_signature(
&self,
type_index: wasmtime_runtime::VMSharedSignatureIndex,
) -> Option<&ir::Signature> {
self.signature_cache.get(&type_index)
) -> Option<ir::Signature> {
self.inner
.signature_cache
.borrow()
.get(&type_index)
.cloned()
}
}
impl Default for Store {
fn default() -> Store {
Store::new(&Engine::default())
}
}

6
crates/api/src/trampoline/create_handle.rs
View File

@@ -3,7 +3,7 @@
use crate::runtime::Store;
use anyhow::Result;
use std::any::Any;
use std::cell::{RefCell, RefMut};
use std::cell::RefCell;
use std::collections::{HashMap, HashSet};
use std::rc::Rc;
use wasmtime_environ::entity::PrimaryMap;
@@ -13,7 +13,7 @@ use wasmtime_runtime::{Imports, InstanceHandle, VMFunctionBody};
pub(crate) fn create_handle(
module: Module,
signature_registry: Option<RefMut<Store>>,
signature_registry: Option<&Store>,
finished_functions: PrimaryMap<DefinedFuncIndex, *const VMFunctionBody>,
state: Box<dyn Any>,
) -> Result<InstanceHandle> {
@@ -31,7 +31,7 @@ pub(crate) fn create_handle(
// Compute indices into the shared signature table.
let signatures = signature_registry
.map(|mut signature_registry| {
.map(|signature_registry| {
module
.signatures
.values()

5
crates/api/src/trampoline/func.rs
View File

@@ -2,7 +2,6 @@
use super::create_handle::create_handle;
use super::trap::{record_api_trap, TrapSink, API_TRAP_CODE};
use crate::r#ref::HostRef;
use crate::{Callable, FuncType, Store, Val};
use anyhow::Result;
use std::cmp;
@@ -234,7 +233,7 @@ fn make_trampoline(
pub fn create_handle_with_function(
ft: &FuncType,
func: &Rc<dyn Callable + 'static>,
store: &HostRef<Store>,
store: &Store,
) -> Result<InstanceHandle> {
let sig = ft.get_wasmtime_signature().clone();
@@ -270,7 +269,7 @@ pub fn create_handle_with_function(
create_handle(
module,
Some(store.borrow_mut()),
Some(store),
finished_functions,
Box::new(trampoline_state),
)

3
crates/api/src/trampoline/mod.rs
View File

@@ -12,7 +12,6 @@ use self::global::create_global;
use self::memory::create_handle_with_memory;
use self::table::create_handle_with_table;
use super::{Callable, FuncType, GlobalType, MemoryType, Store, TableType, Val};
use crate::r#ref::HostRef;
use anyhow::Result;
use std::rc::Rc;
@@ -22,7 +21,7 @@ pub use self::trap::take_api_trap;
pub fn generate_func_export(
ft: &FuncType,
func: &Rc<dyn Callable + 'static>,
store: &HostRef<Store>,
store: &Store,
) -> Result<(wasmtime_runtime::InstanceHandle, wasmtime_runtime::Export)> {
let mut instance = create_handle_with_function(ft, func, store)?;
let export = instance.lookup("trampoline").expect("trampoline export");

10
crates/api/src/values.rs
View File

@@ -197,7 +197,7 @@ impl From<RuntimeValue> for Val {
pub(crate) fn into_checked_anyfunc(
val: Val,
store: &HostRef<Store>,
store: &Store,
) -> wasmtime_runtime::VMCallerCheckedAnyfunc {
match val {
Val::AnyRef(AnyRef::Null) => wasmtime_runtime::VMCallerCheckedAnyfunc {
@@ -215,7 +215,7 @@ pub(crate) fn into_checked_anyfunc(
} => (*vmctx, *address, signature),
_ => panic!("expected function export"),
};
let type_index = store.borrow_mut().register_wasmtime_signature(signature);
let type_index = store.register_wasmtime_signature(signature);
wasmtime_runtime::VMCallerCheckedAnyfunc {
func_ptr,
type_index,
@@ -228,16 +228,14 @@ pub(crate) fn into_checked_anyfunc(
pub(crate) fn from_checked_anyfunc(
item: &wasmtime_runtime::VMCallerCheckedAnyfunc,
store: &HostRef<Store>,
store: &Store,
) -> Val {
if item.type_index == wasmtime_runtime::VMSharedSignatureIndex::default() {
return Val::AnyRef(AnyRef::Null);
}
let signature = store
.borrow()
.lookup_wasmtime_signature(item.type_index)
.expect("signature")
.clone();
.expect("signature");
let instance_handle = unsafe { wasmtime_runtime::InstanceHandle::from_vmctx(item.vmctx) };
let export = wasmtime_runtime::Export::Function {
address: item.func_ptr,

23
crates/api/src/wasm.rs
View File

@@ -609,7 +609,7 @@ pub unsafe extern "C" fn wasm_func_new(
ty: *const wasm_functype_t,
callback: wasm_func_callback_t,
) -> *mut wasm_func_t {
let store = &(*store).store;
let store = &(*store).store.borrow();
let ty = (*ty).functype.clone();
let callback = Rc::new(callback);
let func = Box::new(wasm_func_t {
@@ -663,7 +663,7 @@ pub unsafe extern "C" fn wasm_instance_new(
imports: *const *const wasm_extern_t,
result: *mut *mut wasm_trap_t,
) -> *mut wasm_instance_t {
let store = &(*store).store;
let store = &(*store).store.borrow();
let mut externs: Vec<Extern> = Vec::with_capacity((*module).imports.len());
for i in 0..(*module).imports.len() {
let import = *imports.add(i);
@@ -731,7 +731,7 @@ pub unsafe extern "C" fn wasm_module_new(
binary: *const wasm_byte_vec_t,
) -> *mut wasm_module_t {
let binary = (*binary).as_slice();
let store = &(*store).store;
let store = &(*store).store.borrow();
let module = Module::new_unchecked(store, binary).expect("module");
let imports = module
.imports()
@@ -765,7 +765,7 @@ pub unsafe extern "C" fn wasm_module_validate(
binary: *const wasm_byte_vec_t,
) -> bool {
let binary = (*binary).as_slice();
let store = &(*store).store;
let store = &(*store).store.borrow();
Module::validate(store, binary).is_ok()
}
@@ -814,7 +814,7 @@ pub unsafe extern "C" fn wasm_func_new_with_env(
env: *mut std::ffi::c_void,
finalizer: std::option::Option<unsafe extern "C" fn(arg1: *mut std::ffi::c_void)>,
) -> *mut wasm_func_t {
let store = &(*store).store;
let store = &(*store).store.borrow();
let ty = (*ty).functype.clone();
let callback = Rc::new(CallbackWithEnv {
callback,
@@ -1337,7 +1337,7 @@ pub unsafe extern "C" fn wasm_global_new(
val: *const wasm_val_t,
) -> *mut wasm_global_t {
let global = HostRef::new(Global::new(
&(*store).store,
&(*store).store.borrow(),
(*gt).globaltype.clone(),
(*val).val(),
));
@@ -1456,7 +1456,10 @@ pub unsafe extern "C" fn wasm_memory_new(
store: *mut wasm_store_t,
mt: *const wasm_memorytype_t,
) -> *mut wasm_memory_t {
let memory = HostRef::new(Memory::new(&(*store).store, (*mt).memorytype.clone()));
let memory = HostRef::new(Memory::new(
&(*store).store.borrow(),
(*mt).memorytype.clone(),
));
let m = Box::new(wasm_memory_t { memory, ext: None });
Box::into_raw(m)
}
@@ -1549,7 +1552,11 @@ pub unsafe extern "C" fn wasm_table_new(
Val::AnyRef(AnyRef::Null)
};
let t = Box::new(wasm_table_t {
table: HostRef::new(Table::new(&(*store).store, (*tt).tabletype.clone(), init)),
table: HostRef::new(Table::new(
&(*store).store.borrow(),
(*tt).tabletype.clone(),
init,
)),
ext: None,
});
Box::into_raw(t)

3
crates/api/tests/import_calling_export.rs
View File

@@ -32,8 +32,7 @@ fn test_import_calling_export() {
}
}
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
let wasm = wat::parse_str(WAT).unwrap();
let module = HostRef::new(Module::new(&store, &wasm).expect("failed to create module"));

3
crates/api/tests/traps.rs
View File

@@ -12,8 +12,7 @@ fn test_trap_return() -> Result<(), String> {
}
}
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
let binary = parse_str(
r#"
(module

6
crates/fuzzing/src/oracles.rs
View File

@@ -42,7 +42,7 @@ pub fn instantiate(wasm: &[u8], strategy: Strategy) {
.strategy(strategy)
.expect("failed to enable lightbeam");
let engine = Engine::new(&config);
let store = HostRef::new(Store::new(&engine));
let store = Store::new(&engine);
let module =
HostRef::new(Module::new(&store, wasm).expect("Failed to compile a valid Wasm module!"));
@@ -91,7 +91,7 @@ pub fn make_api_calls(api: crate::generators::api::ApiCalls) {
let mut config: Option<Config> = None;
let mut engine: Option<Engine> = None;
let mut store: Option<HostRef<Store>> = None;
let mut store: Option<Store> = None;
let mut modules: HashMap<usize, HostRef<Module>> = Default::default();
let mut instances: HashMap<usize, HostRef<Instance>> = Default::default();
@@ -113,7 +113,7 @@ pub fn make_api_calls(api: crate::generators::api::ApiCalls) {
ApiCall::StoreNew => {
assert!(store.is_none());
store = Some(HostRef::new(Store::new(engine.as_ref().unwrap())));
store = Some(Store::new(engine.as_ref().unwrap()));
}
ApiCall::ModuleNew { id, wasm } => {

13
crates/fuzzing/src/oracles/dummy.rs
View File

@@ -7,10 +7,7 @@ use wasmtime::{
};
/// Create a set of dummy functions/globals/etc for the given imports.
pub fn dummy_imports(
store: &HostRef<Store>,
import_tys: &[ImportType],
) -> Result<Vec<Extern>, Trap> {
pub fn dummy_imports(store: &Store, import_tys: &[ImportType]) -> Result<Vec<Extern>, Trap> {
let mut imports = Vec::with_capacity(import_tys.len());
for imp in import_tys {
imports.push(match imp.ty() {
@@ -38,7 +35,7 @@ pub struct DummyFunc(FuncType);
impl DummyFunc {
/// Construct a new dummy `Func`.
pub fn new(store: &HostRef<Store>, ty: FuncType) -> Func {
pub fn new(store: &Store, ty: FuncType) -> Func {
let callable = DummyFunc(ty.clone());
Func::new(store, ty, Rc::new(callable) as _)
}
@@ -80,18 +77,18 @@ pub fn dummy_value(val_ty: &ValType) -> Result<Val, Trap> {
}
/// Construct a dummy global for the given global type.
pub fn dummy_global(store: &HostRef<Store>, ty: GlobalType) -> Result<Global, Trap> {
pub fn dummy_global(store: &Store, ty: GlobalType) -> Result<Global, Trap> {
let val = dummy_value(ty.content())?;
Ok(Global::new(store, ty, val))
}
/// Construct a dummy table for the given table type.
pub fn dummy_table(store: &HostRef<Store>, ty: TableType) -> Result<Table, Trap> {
pub fn dummy_table(store: &Store, ty: TableType) -> Result<Table, Trap> {
let init_val = dummy_value(&ty.element())?;
Ok(Table::new(store, ty, init_val))
}
/// Construct a dummy memory for the given memory type.
pub fn dummy_memory(store: &HostRef<Store>, ty: MemoryType) -> Memory {
pub fn dummy_memory(store: &Store, ty: MemoryType) -> Memory {
Memory::new(store, ty)
}

2
crates/misc/py/src/function.rs
View File

@@ -126,7 +126,7 @@ impl wasmtime::Callable for WrappedFn {
}
pub fn wrap_into_pyfunction(
store: &wasmtime::HostRef<wasmtime::Store>,
store: &wasmtime::Store,
callable: &PyAny,
) -> PyResult<wasmtime::HostRef<wasmtime::Func>> {
if !callable.hasattr("__annotations__")? {

8
crates/misc/py/src/lib.rs
View File

@@ -44,11 +44,7 @@ impl InstantiateResultObject {
}
}
fn find_export_in(
obj: &PyAny,
store: &wasmtime::HostRef<wasmtime::Store>,
name: &str,
) -> PyResult<wasmtime::Extern> {
fn find_export_in(obj: &PyAny, store: &wasmtime::Store, name: &str) -> PyResult<wasmtime::Extern> {
let obj = obj.cast_as::<PyDict>()?;
Ok(if let Some(item) = obj.get_item(name) {
@@ -86,7 +82,7 @@ pub fn instantiate(
let wasm_data = buffer_source.as_bytes();
let engine = wasmtime::Engine::new(&wasmtime::Config::new().wasm_multi_value(true));
let store = wasmtime::HostRef::new(wasmtime::Store::new(&engine));
let store = wasmtime::Store::new(&engine);
let module = wasmtime::HostRef::new(wasmtime::Module::new(&store, wasm_data).map_err(err2py)?);

4
crates/misc/rust/macro/src/lib.rs
View File

@@ -52,8 +52,8 @@ fn generate_load(item: &syn::ItemTrait) -> syn::Result<TokenStream> {
use #root::anyhow::{bail, format_err};
let engine = Engine::new(Config::new().wasm_multi_value(true));
let store = HostRef::new(Store::new(&engine));
let global_exports = store.borrow().global_exports().clone();
let store = Store::new(&engine);
let global_exports = store.global_exports().clone();
let data = #root::wasmtime_interface_types::ModuleData::new(&bytes)?;

7
crates/test-programs/tests/wasm_tests/runtime.rs
View File

@@ -1,13 +1,12 @@
use anyhow::{bail, Context};
use std::fs::File;
use std::path::Path;
use wasmtime::{Engine, HostRef, Instance, Module, Store};
use wasmtime::{HostRef, Instance, Module, Store};
pub fn instantiate(data: &[u8], bin_name: &str, workspace: Option<&Path>) -> anyhow::Result<()> {
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
let global_exports = store.borrow().global_exports().clone();
let global_exports = store.global_exports().clone();
let get_preopens = |workspace: Option<&Path>| -> anyhow::Result<Vec<_>> {
if let Some(workspace) = workspace {
let preopen_dir = wasi_common::preopen_dir(workspace)

4
crates/wasi/src/instantiate.rs
View File

@@ -14,12 +14,12 @@ use wasmtime_runtime::{Imports, InstanceHandle, InstantiationError, VMContext};
/// Creates `wasmtime::Instance` object implementing the "wasi" interface.
pub fn create_wasi_instance(
store: &wasmtime::HostRef<wasmtime::Store>,
store: &wasmtime::Store,
preopened_dirs: &[(String, File)],
argv: &[String],
environ: &[(String, String)],
) -> Result<wasmtime::Instance, InstantiationError> {
let global_exports = store.borrow().global_exports().clone();
let global_exports = store.global_exports().clone();
let wasi = instantiate_wasi(global_exports, preopened_dirs, argv, environ)?;
let instance = wasmtime::Instance::from_handle(&store, wasi);
Ok(instance)

4
crates/wasi/src/old/snapshot_0/instantiate.rs
View File

@@ -14,12 +14,12 @@ use wasmtime_runtime::{Imports, InstanceHandle, InstantiationError, VMFunctionBo
/// Creates `wasmtime::Instance` object implementing the "wasi" interface.
pub fn create_wasi_instance(
store: &wasmtime::HostRef<wasmtime::Store>,
store: &wasmtime::Store,
preopened_dirs: &[(String, File)],
argv: &[String],
environ: &[(String, String)],
) -> Result<wasmtime::Instance, InstantiationError> {
let global_exports = store.borrow().global_exports().clone();
let global_exports = store.global_exports().clone();
let wasi = instantiate_wasi(global_exports, preopened_dirs, argv, environ)?;
let instance = wasmtime::Instance::from_handle(&store, wasi);
Ok(instance)

4
crates/wast/src/spectest.rs
View File

@@ -17,7 +17,7 @@ where
}
fn wrap(
store: &HostRef<Store>,
store: &Store,
ty: FuncType,
callable: impl Fn(&[Val], &mut [Val]) -> Result<(), Trap> + 'static,
) -> Func {
@@ -26,7 +26,7 @@ fn wrap(
/// Return an instance implementing the "spectest" interface used in the
/// spec testsuite.
pub fn instantiate_spectest(store: &HostRef<Store>) -> HashMap<&'static str, Extern> {
pub fn instantiate_spectest(store: &Store) -> HashMap<&'static str, Extern> {
let mut ret = HashMap::new();
let ty = FuncType::new(Box::new([]), Box::new([]));

4
crates/wast/src/wast.rs
View File

@@ -30,7 +30,7 @@ pub struct WastContext {
current: Option<HostRef<Instance>>,
instances: HashMap<String, HostRef<Instance>>,
store: HostRef<Store>,
store: Store,
spectest: Option<HashMap<&'static str, Extern>>,
}
@@ -41,7 +41,7 @@ enum Outcome<T = Vec<Val>> {
impl WastContext {
/// Construct a new instance of `WastContext`.
pub fn new(store: HostRef<Store>) -> Self {
pub fn new(store: Store) -> Self {
Self {
current: None,
store,

8
docs/embed-rust.md
View File

@@ -33,13 +33,12 @@ wasmtime = "<current version>"
where "<current version>" is the current version number of the `wasmtime` crate.
It is time to add code to the `src/main.rs`. First, the engine and storage need to be activated:
It is time to add code to the `src/main.rs`. First, storage needs to be activated:
```rust
use wasmtime::*;
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
```
The `HostRef` will be used a lot -- it is a "convenience" object to store and refer an object between the host and
@@ -87,8 +86,7 @@ use std::fs::read;
use wasmtime::*;
fn main() {
let engine = Engine::default();
let store = HostRef::new(Store::new(&engine));
let store = Store::default();
let wasm = read("hello.wasm").expect("wasm file");

10
src/commands/run.rs
View File

@@ -141,7 +141,7 @@ impl RunCommand {
}
let engine = Engine::new(&config);
let store = HostRef::new(Store::new(&engine));
let store = Store::new(&engine);
let mut module_registry = HashMap::new();
// Make wasi available by default.
@@ -151,7 +151,7 @@ impl RunCommand {
let wasi_unstable = HostRef::new(if self.enable_wasi_c {
#[cfg(feature = "wasi-c")]
{
let global_exports = store.borrow().global_exports().clone();
let global_exports = store.global_exports().clone();
let handle = instantiate_wasi_c(global_exports, &preopen_dirs, &argv, &self.vars)?;
Instance::from_handle(&store, handle)
}
@@ -231,12 +231,12 @@ impl RunCommand {
}
fn instantiate_module(
store: &HostRef<Store>,
store: &Store,
module_registry: &HashMap<String, HostRef<Instance>>,
path: &Path,
) -> Result<(HostRef<Instance>, HostRef<Module>, Vec<u8>)> {
// Read the wasm module binary either as `*.wat` or a raw binary
let data = wat::parse_file(path.to_path_buf())?;
let data = wat::parse_file(path)?;
let module = HostRef::new(Module::new(store, &data)?);
@@ -274,7 +274,7 @@ impl RunCommand {
fn handle_module(
&self,
store: &HostRef<Store>,
store: &Store,
module_registry: &HashMap<String, HostRef<Instance>>,
) -> Result<()> {
let (instance, module, data) =

4
src/commands/wast.rs
View File

@@ -4,7 +4,7 @@ use crate::{init_file_per_thread_logger, pick_compilation_strategy, CommonOption
use anyhow::{bail, Context as _, Result};
use std::{fmt::Write, path::PathBuf};
use structopt::{clap::AppSettings, StructOpt};
use wasmtime::{Config, Engine, HostRef, Store};
use wasmtime::{Config, Engine, Store};
use wasmtime_environ::cache_init;
use wasmtime_wast::WastContext;
@@ -65,7 +65,7 @@ impl WastCommand {
config.cranelift_opt_level(wasmtime::OptLevel::Speed);
}
let store = HostRef::new(Store::new(&Engine::new(&config)));
let store = Store::new(&Engine::new(&config));
let mut wast_context = WastContext::new(store);
wast_context

4
tests/wast_testsuites.rs
View File

@@ -1,5 +1,5 @@
use std::path::Path;
use wasmtime::{Config, Engine, HostRef, Store, Strategy};
use wasmtime::{Config, Engine, Store, Strategy};
use wasmtime_wast::WastContext;
include!(concat!(env!("OUT_DIR"), "/wast_testsuite_tests.rs"));
@@ -15,7 +15,7 @@ fn run_wast(wast: &str, strategy: Strategy) -> anyhow::Result<()> {
.wasm_multi_value(wast.iter().any(|s| s == "multi-value"))
.strategy(strategy)?
.cranelift_debug_verifier(true);
let store = HostRef::new(Store::new(&Engine::new(&cfg)));
let store = Store::new(&Engine::new(&cfg));
let mut wast_context = WastContext::new(store);
wast_context.register_spectest()?;
wast_context.run_file(wast)?;