mirror of
https://github.com/denoland/deno.git
synced 2024-12-12 02:27:46 -05:00
3638 lines
113 KiB
Rust
3638 lines
113 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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use crate::bindings;
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use crate::error::generic_error;
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use crate::error::to_v8_type_error;
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use crate::error::JsError;
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use crate::extensions::OpDecl;
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use crate::extensions::OpEventLoopFn;
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use crate::inspector::JsRuntimeInspector;
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use crate::module_specifier::ModuleSpecifier;
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use crate::modules::ModuleError;
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use crate::modules::ModuleId;
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use crate::modules::ModuleLoadId;
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use crate::modules::ModuleLoader;
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use crate::modules::ModuleMap;
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use crate::modules::NoopModuleLoader;
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use crate::op_void_async;
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use crate::op_void_sync;
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use crate::ops::*;
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use crate::source_map::SourceMapCache;
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use crate::source_map::SourceMapGetter;
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use crate::Extension;
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use crate::OpMiddlewareFn;
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use crate::OpResult;
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use crate::OpState;
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use crate::PromiseId;
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use anyhow::Error;
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use futures::channel::oneshot;
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use futures::future::poll_fn;
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use futures::future::Future;
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use futures::future::FutureExt;
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use futures::stream::FuturesUnordered;
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use futures::stream::StreamExt;
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use futures::task::AtomicWaker;
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use std::any::Any;
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use std::cell::RefCell;
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use std::collections::HashMap;
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use std::collections::HashSet;
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use std::ffi::c_void;
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use std::mem::forget;
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use std::option::Option;
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use std::rc::Rc;
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use std::sync::Arc;
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use std::sync::Mutex;
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use std::sync::Once;
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use std::task::Context;
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use std::task::Poll;
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type PendingOpFuture = OpCall<(PromiseId, OpId, OpResult)>;
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pub enum Snapshot {
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Static(&'static [u8]),
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JustCreated(v8::StartupData),
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Boxed(Box<[u8]>),
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}
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pub type JsErrorCreateFn = dyn Fn(JsError) -> Error;
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pub type GetErrorClassFn = &'static dyn for<'e> Fn(&'e Error) -> &'static str;
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/// Objects that need to live as long as the isolate
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#[derive(Default)]
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struct IsolateAllocations {
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near_heap_limit_callback_data:
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Option<(Box<RefCell<dyn Any>>, v8::NearHeapLimitCallback)>,
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}
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/// A single execution context of JavaScript. Corresponds roughly to the "Web
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/// Worker" concept in the DOM. A JsRuntime is a Future that can be used with
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/// an event loop (Tokio, async_std).
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////
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/// The JsRuntime future completes when there is an error or when all
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/// pending ops have completed.
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///
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/// Pending ops are created in JavaScript by calling Deno.core.opAsync(), and in Rust
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/// by implementing an async function that takes a serde::Deserialize "control argument"
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/// and an optional zero copy buffer, each async Op is tied to a Promise in JavaScript.
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pub struct JsRuntime {
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// This is an Option<OwnedIsolate> instead of just OwnedIsolate to workaround
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// a safety issue with SnapshotCreator. See JsRuntime::drop.
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v8_isolate: Option<v8::OwnedIsolate>,
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// This is an Option<Box<JsRuntimeInspector> instead of just Box<JsRuntimeInspector>
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// to workaround a safety issue. See JsRuntime::drop.
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inspector: Option<Box<JsRuntimeInspector>>,
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snapshot_creator: Option<v8::SnapshotCreator>,
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has_snapshotted: bool,
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built_from_snapshot: bool,
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allocations: IsolateAllocations,
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extensions: Vec<Extension>,
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event_loop_middlewares: Vec<Box<OpEventLoopFn>>,
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}
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pub(crate) struct DynImportModEvaluate {
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load_id: ModuleLoadId,
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module_id: ModuleId,
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promise: v8::Global<v8::Promise>,
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module: v8::Global<v8::Module>,
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}
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pub(crate) struct ModEvaluate {
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pub(crate) promise: Option<v8::Global<v8::Promise>>,
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pub(crate) has_evaluated: bool,
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pub(crate) handled_promise_rejections: Vec<v8::Global<v8::Promise>>,
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sender: oneshot::Sender<Result<(), Error>>,
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}
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pub struct CrossIsolateStore<T>(Arc<Mutex<CrossIsolateStoreInner<T>>>);
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struct CrossIsolateStoreInner<T> {
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map: HashMap<u32, T>,
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last_id: u32,
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}
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impl<T> CrossIsolateStore<T> {
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pub(crate) fn insert(&self, value: T) -> u32 {
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let mut store = self.0.lock().unwrap();
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let last_id = store.last_id;
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store.map.insert(last_id, value);
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store.last_id += 1;
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last_id
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}
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pub(crate) fn take(&self, id: u32) -> Option<T> {
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let mut store = self.0.lock().unwrap();
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store.map.remove(&id)
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}
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}
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impl<T> Default for CrossIsolateStore<T> {
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fn default() -> Self {
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CrossIsolateStore(Arc::new(Mutex::new(CrossIsolateStoreInner {
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map: Default::default(),
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last_id: 0,
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})))
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}
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}
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impl<T> Clone for CrossIsolateStore<T> {
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fn clone(&self) -> Self {
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Self(self.0.clone())
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}
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}
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pub type SharedArrayBufferStore =
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CrossIsolateStore<v8::SharedRef<v8::BackingStore>>;
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pub type CompiledWasmModuleStore = CrossIsolateStore<v8::CompiledWasmModule>;
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/// Internal state for JsRuntime which is stored in one of v8::Isolate's
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/// embedder slots.
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pub(crate) struct JsRuntimeState {
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global_realm: Option<JsRealm>,
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pub(crate) js_recv_cb: Option<v8::Global<v8::Function>>,
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pub(crate) js_macrotask_cbs: Vec<v8::Global<v8::Function>>,
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pub(crate) js_nexttick_cbs: Vec<v8::Global<v8::Function>>,
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pub(crate) js_promise_reject_cb: Option<v8::Global<v8::Function>>,
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pub(crate) js_format_exception_cb: Option<v8::Global<v8::Function>>,
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pub(crate) has_tick_scheduled: bool,
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pub(crate) js_wasm_streaming_cb: Option<v8::Global<v8::Function>>,
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pub(crate) pending_promise_exceptions:
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HashMap<v8::Global<v8::Promise>, v8::Global<v8::Value>>,
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pub(crate) pending_dyn_mod_evaluate: Vec<DynImportModEvaluate>,
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pub(crate) pending_mod_evaluate: Option<ModEvaluate>,
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/// A counter used to delay our dynamic import deadlock detection by one spin
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/// of the event loop.
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dyn_module_evaluate_idle_counter: u32,
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pub(crate) source_map_getter: Option<Box<dyn SourceMapGetter>>,
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pub(crate) source_map_cache: SourceMapCache,
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pub(crate) pending_ops: FuturesUnordered<PendingOpFuture>,
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pub(crate) unrefed_ops: HashSet<i32>,
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pub(crate) have_unpolled_ops: bool,
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pub(crate) op_state: Rc<RefCell<OpState>>,
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#[allow(dead_code)]
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// We don't explicitly re-read this prop but need the slice to live alongside the isolate
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pub(crate) op_ctxs: Box<[OpCtx]>,
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pub(crate) shared_array_buffer_store: Option<SharedArrayBufferStore>,
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pub(crate) compiled_wasm_module_store: Option<CompiledWasmModuleStore>,
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/// The error that was passed to an explicit `Deno.core.terminate` call.
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/// It will be retrieved by `exception_to_err_result` and used as an error
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/// instead of any other exceptions.
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pub(crate) explicit_terminate_exception: Option<v8::Global<v8::Value>>,
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waker: AtomicWaker,
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}
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impl Drop for JsRuntime {
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fn drop(&mut self) {
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// The Isolate object must outlive the Inspector object, but this is
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// currently not enforced by the type system.
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self.inspector.take();
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if let Some(creator) = self.snapshot_creator.take() {
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// TODO(ry): in rusty_v8, `SnapShotCreator::get_owned_isolate()` returns
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// a `struct OwnedIsolate` which is not actually owned, hence the need
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// here to leak the `OwnedIsolate` in order to avoid a double free and
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// the segfault that it causes.
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let v8_isolate = self.v8_isolate.take().unwrap();
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forget(v8_isolate);
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// TODO(ry) V8 has a strange assert which prevents a SnapshotCreator from
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// being deallocated if it hasn't created a snapshot yet.
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// https://github.com/v8/v8/blob/73212783fbd534fac76cc4b66aac899c13f71fc8/src/api.cc#L603
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// If that assert is removed, this if guard could be removed.
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// WARNING: There may be false positive LSAN errors here.
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if self.has_snapshotted {
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drop(creator);
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}
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}
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}
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}
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fn v8_init(
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v8_platform: Option<v8::SharedRef<v8::Platform>>,
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predictable: bool,
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) {
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// Include 10MB ICU data file.
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#[repr(C, align(16))]
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struct IcuData([u8; 10454784]);
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static ICU_DATA: IcuData = IcuData(*include_bytes!("icudtl.dat"));
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v8::icu::set_common_data_71(&ICU_DATA.0).unwrap();
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let v8_platform = v8_platform
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.unwrap_or_else(|| v8::new_default_platform(0, false).make_shared());
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v8::V8::initialize_platform(v8_platform);
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v8::V8::initialize();
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let flags = concat!(
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" --experimental-wasm-threads",
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" --wasm-test-streaming",
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" --harmony-import-assertions",
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" --no-validate-asm",
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" --turbo_fast_api_calls",
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);
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if predictable {
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v8::V8::set_flags_from_string(&format!(
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"{}{}",
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flags, " --predictable --random-seed=42"
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));
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} else {
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v8::V8::set_flags_from_string(flags);
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}
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}
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#[derive(Default)]
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pub struct RuntimeOptions {
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/// Source map reference for errors.
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pub source_map_getter: Option<Box<dyn SourceMapGetter>>,
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/// Allows to map error type to a string "class" used to represent
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/// error in JavaScript.
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pub get_error_class_fn: Option<GetErrorClassFn>,
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/// Implementation of `ModuleLoader` which will be
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/// called when V8 requests to load ES modules.
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///
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/// If not provided runtime will error if code being
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/// executed tries to load modules.
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pub module_loader: Option<Rc<dyn ModuleLoader>>,
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/// JsRuntime extensions, not to be confused with ES modules
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/// these are sets of ops and other JS code to be initialized.
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pub extensions: Vec<Extension>,
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/// V8 snapshot that should be loaded on startup.
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///
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/// Currently can't be used with `will_snapshot`.
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pub startup_snapshot: Option<Snapshot>,
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/// Prepare runtime to take snapshot of loaded code.
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/// The snapshot is determinstic and uses predictable random numbers.
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///
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/// Currently can't be used with `startup_snapshot`.
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pub will_snapshot: bool,
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/// Isolate creation parameters.
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pub create_params: Option<v8::CreateParams>,
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/// V8 platform instance to use. Used when Deno initializes V8
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/// (which it only does once), otherwise it's silenty dropped.
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pub v8_platform: Option<v8::SharedRef<v8::Platform>>,
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/// The store to use for transferring SharedArrayBuffers between isolates.
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/// If multiple isolates should have the possibility of sharing
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/// SharedArrayBuffers, they should use the same [SharedArrayBufferStore]. If
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/// no [SharedArrayBufferStore] is specified, SharedArrayBuffer can not be
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/// serialized.
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pub shared_array_buffer_store: Option<SharedArrayBufferStore>,
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/// The store to use for transferring `WebAssembly.Module` objects between
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/// isolates.
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/// If multiple isolates should have the possibility of sharing
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/// `WebAssembly.Module` objects, they should use the same
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/// [CompiledWasmModuleStore]. If no [CompiledWasmModuleStore] is specified,
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/// `WebAssembly.Module` objects cannot be serialized.
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pub compiled_wasm_module_store: Option<CompiledWasmModuleStore>,
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}
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impl JsRuntime {
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/// Only constructor, configuration is done through `options`.
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pub fn new(mut options: RuntimeOptions) -> Self {
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let v8_platform = options.v8_platform.take();
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static DENO_INIT: Once = Once::new();
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DENO_INIT.call_once(move || v8_init(v8_platform, options.will_snapshot));
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let has_startup_snapshot = options.startup_snapshot.is_some();
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// Add builtins extension
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options
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.extensions
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.insert(0, crate::ops_builtin::init_builtins());
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let ops = Self::collect_ops(&mut options.extensions);
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let mut op_state = OpState::new(ops.len());
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if let Some(get_error_class_fn) = options.get_error_class_fn {
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op_state.get_error_class_fn = get_error_class_fn;
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}
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let op_state = Rc::new(RefCell::new(op_state));
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let op_ctxs = ops
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.into_iter()
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.enumerate()
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.map(|(id, decl)| OpCtx {
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id,
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state: op_state.clone(),
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decl,
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})
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.collect::<Vec<_>>()
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.into_boxed_slice();
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let global_context;
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let (mut isolate, maybe_snapshot_creator) = if options.will_snapshot {
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// TODO(ry) Support loading snapshots before snapshotting.
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assert!(options.startup_snapshot.is_none());
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let mut creator =
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v8::SnapshotCreator::new(Some(&bindings::EXTERNAL_REFERENCES));
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// SAFETY: `get_owned_isolate` is unsafe because it may only be called
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// once. This is the only place we call this function, so this call is
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// safe.
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let isolate = unsafe { creator.get_owned_isolate() };
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let mut isolate = JsRuntime::setup_isolate(isolate);
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{
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let scope = &mut v8::HandleScope::new(&mut isolate);
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let context = bindings::initialize_context(scope, &op_ctxs, false);
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global_context = v8::Global::new(scope, context);
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creator.set_default_context(context);
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}
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(isolate, Some(creator))
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} else {
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let mut params = options
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.create_params
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.take()
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.unwrap_or_else(v8::Isolate::create_params)
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.external_references(&**bindings::EXTERNAL_REFERENCES);
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let snapshot_loaded = if let Some(snapshot) = options.startup_snapshot {
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params = match snapshot {
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Snapshot::Static(data) => params.snapshot_blob(data),
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Snapshot::JustCreated(data) => params.snapshot_blob(data),
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Snapshot::Boxed(data) => params.snapshot_blob(data),
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};
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true
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} else {
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false
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};
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let isolate = v8::Isolate::new(params);
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let mut isolate = JsRuntime::setup_isolate(isolate);
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{
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let scope = &mut v8::HandleScope::new(&mut isolate);
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let context =
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bindings::initialize_context(scope, &op_ctxs, snapshot_loaded);
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global_context = v8::Global::new(scope, context);
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}
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(isolate, None)
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};
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let inspector =
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JsRuntimeInspector::new(&mut isolate, global_context.clone());
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let loader = options
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.module_loader
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.unwrap_or_else(|| Rc::new(NoopModuleLoader));
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isolate.set_slot(Rc::new(RefCell::new(JsRuntimeState {
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global_realm: Some(JsRealm(global_context)),
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pending_promise_exceptions: HashMap::new(),
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pending_dyn_mod_evaluate: vec![],
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pending_mod_evaluate: None,
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dyn_module_evaluate_idle_counter: 0,
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js_recv_cb: None,
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js_macrotask_cbs: vec![],
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js_nexttick_cbs: vec![],
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js_promise_reject_cb: None,
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js_format_exception_cb: None,
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has_tick_scheduled: false,
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js_wasm_streaming_cb: None,
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source_map_getter: options.source_map_getter,
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source_map_cache: Default::default(),
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pending_ops: FuturesUnordered::new(),
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unrefed_ops: HashSet::new(),
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shared_array_buffer_store: options.shared_array_buffer_store,
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compiled_wasm_module_store: options.compiled_wasm_module_store,
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op_state: op_state.clone(),
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op_ctxs,
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have_unpolled_ops: false,
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explicit_terminate_exception: None,
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waker: AtomicWaker::new(),
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})));
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let module_map = ModuleMap::new(loader, op_state);
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isolate.set_slot(Rc::new(RefCell::new(module_map)));
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let mut js_runtime = Self {
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v8_isolate: Some(isolate),
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inspector: Some(inspector),
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snapshot_creator: maybe_snapshot_creator,
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has_snapshotted: false,
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built_from_snapshot: has_startup_snapshot,
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allocations: IsolateAllocations::default(),
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event_loop_middlewares: Vec::with_capacity(options.extensions.len()),
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extensions: options.extensions,
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};
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// TODO(@AaronO): diff extensions inited in snapshot and those provided
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// for now we assume that snapshot and extensions always match
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if !has_startup_snapshot {
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let realm = js_runtime.global_realm();
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js_runtime.init_extension_js(&realm).unwrap();
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}
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// Init extension ops
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js_runtime.init_extension_ops().unwrap();
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// Init callbacks (opresolve)
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js_runtime.init_cbs();
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js_runtime
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}
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pub fn global_context(&mut self) -> v8::Global<v8::Context> {
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self.global_realm().0
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}
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pub fn v8_isolate(&mut self) -> &mut v8::OwnedIsolate {
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self.v8_isolate.as_mut().unwrap()
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}
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pub fn inspector(&mut self) -> &mut Box<JsRuntimeInspector> {
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self.inspector.as_mut().unwrap()
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}
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pub fn global_realm(&mut self) -> JsRealm {
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let state = Self::state(self.v8_isolate());
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let state = state.borrow();
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state.global_realm.clone().unwrap()
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}
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pub fn create_realm(&mut self) -> Result<JsRealm, Error> {
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let realm = {
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// SAFETY: Having the scope tied to self's lifetime makes it impossible to
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// reference self.ops while the scope is alive. Here we turn it into an
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// unbound lifetime, which is sound because 1. it only lives until the end
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// of this block, and 2. the HandleScope only has access to the isolate,
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// and nothing else we're accessing from self does.
|
|
let scope = &mut v8::HandleScope::new(unsafe {
|
|
&mut *(self.v8_isolate() as *mut v8::OwnedIsolate)
|
|
});
|
|
let context = bindings::initialize_context(
|
|
scope,
|
|
&Self::state(self.v8_isolate()).borrow().op_ctxs,
|
|
self.built_from_snapshot,
|
|
);
|
|
JsRealm::new(v8::Global::new(scope, context))
|
|
};
|
|
|
|
if !self.built_from_snapshot {
|
|
self.init_extension_js(&realm)?;
|
|
}
|
|
Ok(realm)
|
|
}
|
|
|
|
pub fn handle_scope(&mut self) -> v8::HandleScope {
|
|
self.global_realm().handle_scope(self.v8_isolate())
|
|
}
|
|
|
|
fn setup_isolate(mut isolate: v8::OwnedIsolate) -> v8::OwnedIsolate {
|
|
isolate.set_capture_stack_trace_for_uncaught_exceptions(true, 10);
|
|
isolate.set_promise_reject_callback(bindings::promise_reject_callback);
|
|
isolate.set_host_initialize_import_meta_object_callback(
|
|
bindings::host_initialize_import_meta_object_callback,
|
|
);
|
|
isolate.set_host_import_module_dynamically_callback(
|
|
bindings::host_import_module_dynamically_callback,
|
|
);
|
|
isolate
|
|
}
|
|
|
|
pub(crate) fn state(isolate: &v8::Isolate) -> Rc<RefCell<JsRuntimeState>> {
|
|
let s = isolate.get_slot::<Rc<RefCell<JsRuntimeState>>>().unwrap();
|
|
s.clone()
|
|
}
|
|
|
|
pub(crate) fn module_map(isolate: &v8::Isolate) -> Rc<RefCell<ModuleMap>> {
|
|
let module_map = isolate.get_slot::<Rc<RefCell<ModuleMap>>>().unwrap();
|
|
module_map.clone()
|
|
}
|
|
|
|
/// Initializes JS of provided Extensions in the given realm
|
|
fn init_extension_js(&mut self, realm: &JsRealm) -> Result<(), Error> {
|
|
// Take extensions to avoid double-borrow
|
|
let mut extensions: Vec<Extension> = std::mem::take(&mut self.extensions);
|
|
for m in extensions.iter_mut() {
|
|
let js_files = m.init_js();
|
|
for (filename, source) in js_files {
|
|
// TODO(@AaronO): use JsRuntime::execute_static() here to move src off heap
|
|
realm.execute_script(self.v8_isolate(), filename, source)?;
|
|
}
|
|
}
|
|
// Restore extensions
|
|
self.extensions = extensions;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Collects ops from extensions & applies middleware
|
|
fn collect_ops(extensions: &mut [Extension]) -> Vec<OpDecl> {
|
|
// Middleware
|
|
let middleware: Vec<Box<OpMiddlewareFn>> = extensions
|
|
.iter_mut()
|
|
.filter_map(|e| e.init_middleware())
|
|
.collect();
|
|
|
|
// macroware wraps an opfn in all the middleware
|
|
let macroware = move |d| middleware.iter().fold(d, |d, m| m(d));
|
|
|
|
// Flatten ops, apply middlware & override disabled ops
|
|
extensions
|
|
.iter_mut()
|
|
.filter_map(|e| e.init_ops())
|
|
.flatten()
|
|
.map(|d| OpDecl {
|
|
name: d.name,
|
|
..macroware(d)
|
|
})
|
|
.map(|op| match op.enabled {
|
|
true => op,
|
|
false => OpDecl {
|
|
v8_fn_ptr: match op.is_async {
|
|
true => op_void_async::v8_fn_ptr(),
|
|
false => op_void_sync::v8_fn_ptr(),
|
|
},
|
|
..op
|
|
},
|
|
})
|
|
.collect()
|
|
}
|
|
|
|
/// Initializes ops of provided Extensions
|
|
fn init_extension_ops(&mut self) -> Result<(), Error> {
|
|
let op_state = self.op_state();
|
|
// Take extensions to avoid double-borrow
|
|
let mut extensions: Vec<Extension> = std::mem::take(&mut self.extensions);
|
|
|
|
// Setup state
|
|
for e in extensions.iter_mut() {
|
|
// ops are already registered during in bindings::initialize_context();
|
|
e.init_state(&mut op_state.borrow_mut())?;
|
|
|
|
// Setup event-loop middleware
|
|
if let Some(middleware) = e.init_event_loop_middleware() {
|
|
self.event_loop_middlewares.push(middleware);
|
|
}
|
|
}
|
|
|
|
// Restore extensions
|
|
self.extensions = extensions;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Grab a Global handle to a v8 value returned by the expression
|
|
pub(crate) fn grab<'s, T>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
root: v8::Local<'s, v8::Value>,
|
|
path: &str,
|
|
) -> Option<v8::Local<'s, T>>
|
|
where
|
|
v8::Local<'s, T>: TryFrom<v8::Local<'s, v8::Value>, Error = v8::DataError>,
|
|
{
|
|
path
|
|
.split('.')
|
|
.fold(Some(root), |p, k| {
|
|
let p = v8::Local::<v8::Object>::try_from(p?).ok()?;
|
|
let k = v8::String::new(scope, k)?;
|
|
p.get(scope, k.into())
|
|
})?
|
|
.try_into()
|
|
.ok()
|
|
}
|
|
|
|
pub(crate) fn grab_global<'s, T>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
path: &str,
|
|
) -> Option<v8::Local<'s, T>>
|
|
where
|
|
v8::Local<'s, T>: TryFrom<v8::Local<'s, v8::Value>, Error = v8::DataError>,
|
|
{
|
|
let context = scope.get_current_context();
|
|
let global = context.global(scope);
|
|
Self::grab(scope, global.into(), path)
|
|
}
|
|
|
|
pub(crate) fn ensure_objs<'s>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
root: v8::Local<'s, v8::Object>,
|
|
path: &str,
|
|
) -> Option<v8::Local<'s, v8::Object>> {
|
|
path.split('.').fold(Some(root), |p, k| {
|
|
let k = v8::String::new(scope, k)?.into();
|
|
match p?.get(scope, k) {
|
|
Some(v) if !v.is_null_or_undefined() => v.try_into().ok(),
|
|
_ => {
|
|
let o = v8::Object::new(scope);
|
|
p?.set(scope, k, o.into());
|
|
Some(o)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
/// Grabs a reference to core.js' opresolve & syncOpsCache()
|
|
fn init_cbs(&mut self) {
|
|
let scope = &mut self.handle_scope();
|
|
let recv_cb =
|
|
Self::grab_global::<v8::Function>(scope, "Deno.core.opresolve").unwrap();
|
|
let recv_cb = v8::Global::new(scope, recv_cb);
|
|
// Put global handles in state
|
|
let state_rc = JsRuntime::state(scope);
|
|
let mut state = state_rc.borrow_mut();
|
|
state.js_recv_cb.replace(recv_cb);
|
|
}
|
|
|
|
/// Returns the runtime's op state, which can be used to maintain ops
|
|
/// and access resources between op calls.
|
|
pub fn op_state(&mut self) -> Rc<RefCell<OpState>> {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let state = state_rc.borrow();
|
|
state.op_state.clone()
|
|
}
|
|
|
|
/// Executes traditional JavaScript code (traditional = not ES modules).
|
|
///
|
|
/// The execution takes place on the current global context, so it is possible
|
|
/// to maintain local JS state and invoke this method multiple times.
|
|
///
|
|
/// `name` can be a filepath or any other string, eg.
|
|
///
|
|
/// - "/some/file/path.js"
|
|
/// - "<anon>"
|
|
/// - "[native code]"
|
|
///
|
|
/// The same `name` value can be used for multiple executions.
|
|
///
|
|
/// `Error` can usually be downcast to `JsError`.
|
|
pub fn execute_script(
|
|
&mut self,
|
|
name: &str,
|
|
source_code: &str,
|
|
) -> Result<v8::Global<v8::Value>, Error> {
|
|
self
|
|
.global_realm()
|
|
.execute_script(self.v8_isolate(), name, source_code)
|
|
}
|
|
|
|
/// Takes a snapshot. The isolate should have been created with will_snapshot
|
|
/// set to true.
|
|
///
|
|
/// `Error` can usually be downcast to `JsError`.
|
|
pub fn snapshot(&mut self) -> v8::StartupData {
|
|
assert!(self.snapshot_creator.is_some());
|
|
|
|
// Nuke Deno.core.ops.* to avoid ExternalReference snapshotting issues
|
|
// TODO(@AaronO): make ops stable across snapshots
|
|
{
|
|
let scope = &mut self.handle_scope();
|
|
let o = Self::grab_global::<v8::Object>(scope, "Deno.core.ops").unwrap();
|
|
let names = o.get_own_property_names(scope).unwrap();
|
|
for i in 0..names.length() {
|
|
let key = names.get_index(scope, i).unwrap();
|
|
o.delete(scope, key);
|
|
}
|
|
}
|
|
|
|
let state = Self::state(self.v8_isolate());
|
|
|
|
state.borrow_mut().global_realm.take();
|
|
|
|
self.inspector.take();
|
|
|
|
// Overwrite existing ModuleMap to drop v8::Global handles
|
|
self
|
|
.v8_isolate()
|
|
.set_slot(Rc::new(RefCell::new(ModuleMap::new(
|
|
Rc::new(NoopModuleLoader),
|
|
state.borrow().op_state.clone(),
|
|
))));
|
|
// Drop other v8::Global handles before snapshotting
|
|
std::mem::take(&mut state.borrow_mut().js_recv_cb);
|
|
|
|
let snapshot_creator = self.snapshot_creator.as_mut().unwrap();
|
|
let snapshot = snapshot_creator
|
|
.create_blob(v8::FunctionCodeHandling::Keep)
|
|
.unwrap();
|
|
self.has_snapshotted = true;
|
|
|
|
snapshot
|
|
}
|
|
|
|
/// Returns the namespace object of a module.
|
|
///
|
|
/// This is only available after module evaluation has completed.
|
|
/// This function panics if module has not been instantiated.
|
|
pub fn get_module_namespace(
|
|
&mut self,
|
|
module_id: ModuleId,
|
|
) -> Result<v8::Global<v8::Object>, Error> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
|
|
let module_handle = module_map_rc
|
|
.borrow()
|
|
.get_handle(module_id)
|
|
.expect("ModuleInfo not found");
|
|
|
|
let scope = &mut self.handle_scope();
|
|
|
|
let module = module_handle.open(scope);
|
|
|
|
if module.get_status() == v8::ModuleStatus::Errored {
|
|
let exception = module.get_exception();
|
|
return exception_to_err_result(scope, exception, false);
|
|
}
|
|
|
|
assert!(matches!(
|
|
module.get_status(),
|
|
v8::ModuleStatus::Instantiated | v8::ModuleStatus::Evaluated
|
|
));
|
|
|
|
let module_namespace: v8::Local<v8::Object> =
|
|
v8::Local::try_from(module.get_module_namespace())
|
|
.map_err(|err: v8::DataError| generic_error(err.to_string()))?;
|
|
|
|
Ok(v8::Global::new(scope, module_namespace))
|
|
}
|
|
|
|
/// Registers a callback on the isolate when the memory limits are approached.
|
|
/// Use this to prevent V8 from crashing the process when reaching the limit.
|
|
///
|
|
/// Calls the closure with the current heap limit and the initial heap limit.
|
|
/// The return value of the closure is set as the new limit.
|
|
pub fn add_near_heap_limit_callback<C>(&mut self, cb: C)
|
|
where
|
|
C: FnMut(usize, usize) -> usize + 'static,
|
|
{
|
|
let boxed_cb = Box::new(RefCell::new(cb));
|
|
let data = boxed_cb.as_ptr() as *mut c_void;
|
|
|
|
let prev = self
|
|
.allocations
|
|
.near_heap_limit_callback_data
|
|
.replace((boxed_cb, near_heap_limit_callback::<C>));
|
|
if let Some((_, prev_cb)) = prev {
|
|
self
|
|
.v8_isolate()
|
|
.remove_near_heap_limit_callback(prev_cb, 0);
|
|
}
|
|
|
|
self
|
|
.v8_isolate()
|
|
.add_near_heap_limit_callback(near_heap_limit_callback::<C>, data);
|
|
}
|
|
|
|
pub fn remove_near_heap_limit_callback(&mut self, heap_limit: usize) {
|
|
if let Some((_, cb)) = self.allocations.near_heap_limit_callback_data.take()
|
|
{
|
|
self
|
|
.v8_isolate()
|
|
.remove_near_heap_limit_callback(cb, heap_limit);
|
|
}
|
|
}
|
|
|
|
fn pump_v8_message_loop(&mut self) -> Result<(), Error> {
|
|
let scope = &mut self.handle_scope();
|
|
while v8::Platform::pump_message_loop(
|
|
&v8::V8::get_current_platform(),
|
|
scope,
|
|
false, // don't block if there are no tasks
|
|
) {
|
|
// do nothing
|
|
}
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
tc_scope.perform_microtask_checkpoint();
|
|
match tc_scope.exception() {
|
|
None => Ok(()),
|
|
Some(exception) => exception_to_err_result(tc_scope, exception, false),
|
|
}
|
|
}
|
|
|
|
pub fn poll_value(
|
|
&mut self,
|
|
global: &v8::Global<v8::Value>,
|
|
cx: &mut Context,
|
|
) -> Poll<Result<v8::Global<v8::Value>, Error>> {
|
|
let state = self.poll_event_loop(cx, false);
|
|
|
|
let mut scope = self.handle_scope();
|
|
let local = v8::Local::<v8::Value>::new(&mut scope, global);
|
|
|
|
if let Ok(promise) = v8::Local::<v8::Promise>::try_from(local) {
|
|
match promise.state() {
|
|
v8::PromiseState::Pending => match state {
|
|
Poll::Ready(Ok(_)) => {
|
|
let msg = "Promise resolution is still pending but the event loop has already resolved.";
|
|
Poll::Ready(Err(generic_error(msg)))
|
|
}
|
|
Poll::Ready(Err(e)) => Poll::Ready(Err(e)),
|
|
Poll::Pending => Poll::Pending,
|
|
},
|
|
v8::PromiseState::Fulfilled => {
|
|
let value = promise.result(&mut scope);
|
|
let value_handle = v8::Global::new(&mut scope, value);
|
|
Poll::Ready(Ok(value_handle))
|
|
}
|
|
v8::PromiseState::Rejected => {
|
|
let exception = promise.result(&mut scope);
|
|
Poll::Ready(exception_to_err_result(&mut scope, exception, false))
|
|
}
|
|
}
|
|
} else {
|
|
let value_handle = v8::Global::new(&mut scope, local);
|
|
Poll::Ready(Ok(value_handle))
|
|
}
|
|
}
|
|
|
|
/// Waits for the given value to resolve while polling the event loop.
|
|
///
|
|
/// This future resolves when either the value is resolved or the event loop runs to
|
|
/// completion.
|
|
pub async fn resolve_value(
|
|
&mut self,
|
|
global: v8::Global<v8::Value>,
|
|
) -> Result<v8::Global<v8::Value>, Error> {
|
|
poll_fn(|cx| self.poll_value(&global, cx)).await
|
|
}
|
|
|
|
/// Runs event loop to completion
|
|
///
|
|
/// This future resolves when:
|
|
/// - there are no more pending dynamic imports
|
|
/// - there are no more pending ops
|
|
/// - there are no more active inspector sessions (only if `wait_for_inspector` is set to true)
|
|
pub async fn run_event_loop(
|
|
&mut self,
|
|
wait_for_inspector: bool,
|
|
) -> Result<(), Error> {
|
|
poll_fn(|cx| self.poll_event_loop(cx, wait_for_inspector)).await
|
|
}
|
|
|
|
/// Runs a single tick of event loop
|
|
///
|
|
/// If `wait_for_inspector` is set to true event loop
|
|
/// will return `Poll::Pending` if there are active inspector sessions.
|
|
pub fn poll_event_loop(
|
|
&mut self,
|
|
cx: &mut Context,
|
|
wait_for_inspector: bool,
|
|
) -> Poll<Result<(), Error>> {
|
|
// We always poll the inspector first
|
|
let _ = self.inspector().poll_unpin(cx);
|
|
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
{
|
|
let state = state_rc.borrow();
|
|
state.waker.register(cx.waker());
|
|
}
|
|
|
|
self.pump_v8_message_loop()?;
|
|
|
|
// Ops
|
|
{
|
|
self.resolve_async_ops(cx)?;
|
|
self.drain_nexttick()?;
|
|
self.drain_macrotasks()?;
|
|
self.check_promise_exceptions()?;
|
|
}
|
|
|
|
// Dynamic module loading - ie. modules loaded using "import()"
|
|
{
|
|
// Run in a loop so that dynamic imports that only depend on another
|
|
// dynamic import can be resolved in this event loop iteration.
|
|
//
|
|
// For example, a dynamically imported module like the following can be
|
|
// immediately resolved after `dependency.ts` is fully evaluated, but it
|
|
// wouldn't if not for this loop.
|
|
//
|
|
// await delay(1000);
|
|
// await import("./dependency.ts");
|
|
// console.log("test")
|
|
//
|
|
loop {
|
|
let poll_imports = self.prepare_dyn_imports(cx)?;
|
|
assert!(poll_imports.is_ready());
|
|
|
|
let poll_imports = self.poll_dyn_imports(cx)?;
|
|
assert!(poll_imports.is_ready());
|
|
|
|
if !self.evaluate_dyn_imports() {
|
|
break;
|
|
}
|
|
}
|
|
|
|
self.check_promise_exceptions()?;
|
|
}
|
|
|
|
// Event loop middlewares
|
|
let mut maybe_scheduling = false;
|
|
{
|
|
let op_state = state_rc.borrow().op_state.clone();
|
|
for f in &self.event_loop_middlewares {
|
|
if f(op_state.clone(), cx) {
|
|
maybe_scheduling = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Top level module
|
|
self.evaluate_pending_module();
|
|
|
|
let pending_state = Self::event_loop_pending_state(self.v8_isolate());
|
|
let inspector_has_active_sessions = self
|
|
.inspector
|
|
.as_ref()
|
|
.map(|i| i.has_active_sessions())
|
|
.unwrap_or(false);
|
|
|
|
if !pending_state.is_pending() && !maybe_scheduling {
|
|
if wait_for_inspector && inspector_has_active_sessions {
|
|
return Poll::Pending;
|
|
}
|
|
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
|
|
let mut state = state_rc.borrow_mut();
|
|
let module_map = module_map_rc.borrow();
|
|
|
|
// Check if more async ops have been dispatched
|
|
// during this turn of event loop.
|
|
// If there are any pending background tasks, we also wake the runtime to
|
|
// make sure we don't miss them.
|
|
// TODO(andreubotella) The event loop will spin as long as there are pending
|
|
// background tasks. We should look into having V8 notify us when a
|
|
// background task is done.
|
|
if state.have_unpolled_ops
|
|
|| pending_state.has_pending_background_tasks
|
|
|| pending_state.has_tick_scheduled
|
|
|| maybe_scheduling
|
|
{
|
|
state.waker.wake();
|
|
}
|
|
|
|
if pending_state.has_pending_module_evaluation {
|
|
if pending_state.has_pending_refed_ops
|
|
|| pending_state.has_pending_dyn_imports
|
|
|| pending_state.has_pending_dyn_module_evaluation
|
|
|| pending_state.has_pending_background_tasks
|
|
|| pending_state.has_tick_scheduled
|
|
|| maybe_scheduling
|
|
{
|
|
// pass, will be polled again
|
|
} else {
|
|
let msg = "Module evaluation is still pending but there are no pending ops or dynamic imports. This situation is often caused by unresolved promises.";
|
|
return Poll::Ready(Err(generic_error(msg)));
|
|
}
|
|
}
|
|
|
|
if pending_state.has_pending_dyn_module_evaluation {
|
|
if pending_state.has_pending_refed_ops
|
|
|| pending_state.has_pending_dyn_imports
|
|
|| pending_state.has_pending_background_tasks
|
|
|| pending_state.has_tick_scheduled
|
|
{
|
|
// pass, will be polled again
|
|
} else if state.dyn_module_evaluate_idle_counter >= 1 {
|
|
let mut msg = "Dynamically imported module evaluation is still pending but there are no pending ops. This situation is often caused by unresolved promises.
|
|
Pending dynamic modules:\n".to_string();
|
|
for pending_evaluate in &state.pending_dyn_mod_evaluate {
|
|
let module_info = module_map
|
|
.get_info_by_id(&pending_evaluate.module_id)
|
|
.unwrap();
|
|
msg.push_str("- ");
|
|
msg.push_str(module_info.name.as_str());
|
|
}
|
|
return Poll::Ready(Err(generic_error(msg)));
|
|
} else {
|
|
// Delay the above error by one spin of the event loop. A dynamic import
|
|
// evaluation may complete during this, in which case the counter will
|
|
// reset.
|
|
state.dyn_module_evaluate_idle_counter += 1;
|
|
state.waker.wake();
|
|
}
|
|
}
|
|
|
|
Poll::Pending
|
|
}
|
|
|
|
pub(crate) fn event_loop_pending_state(
|
|
isolate: &mut v8::Isolate,
|
|
) -> EventLoopPendingState {
|
|
let state_rc = Self::state(isolate);
|
|
let module_map_rc = Self::module_map(isolate);
|
|
let state = state_rc.borrow_mut();
|
|
let module_map = module_map_rc.borrow();
|
|
|
|
EventLoopPendingState {
|
|
has_pending_refed_ops: state.pending_ops.len() > state.unrefed_ops.len(),
|
|
has_pending_dyn_imports: module_map.has_pending_dynamic_imports(),
|
|
has_pending_dyn_module_evaluation: !state
|
|
.pending_dyn_mod_evaluate
|
|
.is_empty(),
|
|
has_pending_module_evaluation: state.pending_mod_evaluate.is_some(),
|
|
has_pending_background_tasks: isolate.has_pending_background_tasks(),
|
|
has_tick_scheduled: state.has_tick_scheduled,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
|
|
pub(crate) struct EventLoopPendingState {
|
|
has_pending_refed_ops: bool,
|
|
has_pending_dyn_imports: bool,
|
|
has_pending_dyn_module_evaluation: bool,
|
|
has_pending_module_evaluation: bool,
|
|
has_pending_background_tasks: bool,
|
|
has_tick_scheduled: bool,
|
|
}
|
|
impl EventLoopPendingState {
|
|
pub fn is_pending(&self) -> bool {
|
|
self.has_pending_refed_ops
|
|
|| self.has_pending_dyn_imports
|
|
|| self.has_pending_dyn_module_evaluation
|
|
|| self.has_pending_module_evaluation
|
|
|| self.has_pending_background_tasks
|
|
|| self.has_tick_scheduled
|
|
}
|
|
}
|
|
|
|
extern "C" fn near_heap_limit_callback<F>(
|
|
data: *mut c_void,
|
|
current_heap_limit: usize,
|
|
initial_heap_limit: usize,
|
|
) -> usize
|
|
where
|
|
F: FnMut(usize, usize) -> usize,
|
|
{
|
|
// SAFETY: The data is a pointer to the Rust callback function. It is stored
|
|
// in `JsRuntime::allocations` and thus is guaranteed to outlive the isolate.
|
|
let callback = unsafe { &mut *(data as *mut F) };
|
|
callback(current_heap_limit, initial_heap_limit)
|
|
}
|
|
|
|
impl JsRuntimeState {
|
|
/// Called by `bindings::host_import_module_dynamically_callback`
|
|
/// after initiating new dynamic import load.
|
|
pub fn notify_new_dynamic_import(&mut self) {
|
|
// Notify event loop to poll again soon.
|
|
self.waker.wake();
|
|
}
|
|
}
|
|
|
|
pub(crate) fn exception_to_err_result<'s, T>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
exception: v8::Local<v8::Value>,
|
|
in_promise: bool,
|
|
) -> Result<T, Error> {
|
|
let state_rc = JsRuntime::state(scope);
|
|
|
|
let is_terminating_exception = scope.is_execution_terminating();
|
|
let mut exception = exception;
|
|
|
|
if is_terminating_exception {
|
|
// TerminateExecution was called. Cancel isolate termination so that the
|
|
// exception can be created..
|
|
scope.cancel_terminate_execution();
|
|
|
|
// If the termination is the result of a `Deno.core.terminate` call, we want
|
|
// to use the exception that was passed to it rather than the exception that
|
|
// was passed to this function.
|
|
let mut state = state_rc.borrow_mut();
|
|
exception = state
|
|
.explicit_terminate_exception
|
|
.take()
|
|
.map(|exception| v8::Local::new(scope, exception))
|
|
.unwrap_or_else(|| {
|
|
// Maybe make a new exception object.
|
|
if exception.is_null_or_undefined() {
|
|
let message = v8::String::new(scope, "execution terminated").unwrap();
|
|
v8::Exception::error(scope, message)
|
|
} else {
|
|
exception
|
|
}
|
|
});
|
|
}
|
|
|
|
let mut js_error = JsError::from_v8_exception(scope, exception);
|
|
if in_promise {
|
|
js_error.exception_message = format!(
|
|
"Uncaught (in promise) {}",
|
|
js_error.exception_message.trim_start_matches("Uncaught ")
|
|
);
|
|
}
|
|
|
|
if is_terminating_exception {
|
|
// Re-enable exception termination.
|
|
scope.terminate_execution();
|
|
}
|
|
|
|
Err(js_error.into())
|
|
}
|
|
|
|
// Related to module loading
|
|
impl JsRuntime {
|
|
pub(crate) fn instantiate_module(
|
|
&mut self,
|
|
id: ModuleId,
|
|
) -> Result<(), v8::Global<v8::Value>> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
let scope = &mut self.handle_scope();
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
let module = module_map_rc
|
|
.borrow()
|
|
.get_handle(id)
|
|
.map(|handle| v8::Local::new(tc_scope, handle))
|
|
.expect("ModuleInfo not found");
|
|
|
|
if module.get_status() == v8::ModuleStatus::Errored {
|
|
return Err(v8::Global::new(tc_scope, module.get_exception()));
|
|
}
|
|
|
|
// IMPORTANT: No borrows to `ModuleMap` can be held at this point because
|
|
// `module_resolve_callback` will be calling into `ModuleMap` from within
|
|
// the isolate.
|
|
let instantiate_result =
|
|
module.instantiate_module(tc_scope, bindings::module_resolve_callback);
|
|
|
|
if instantiate_result.is_none() {
|
|
let exception = tc_scope.exception().unwrap();
|
|
return Err(v8::Global::new(tc_scope, exception));
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn dynamic_import_module_evaluate(
|
|
&mut self,
|
|
load_id: ModuleLoadId,
|
|
id: ModuleId,
|
|
) -> Result<(), Error> {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
|
|
let module_handle = module_map_rc
|
|
.borrow()
|
|
.get_handle(id)
|
|
.expect("ModuleInfo not found");
|
|
|
|
let status = {
|
|
let scope = &mut self.handle_scope();
|
|
let module = module_handle.open(scope);
|
|
module.get_status()
|
|
};
|
|
|
|
match status {
|
|
v8::ModuleStatus::Instantiated | v8::ModuleStatus::Evaluated => {}
|
|
_ => return Ok(()),
|
|
}
|
|
|
|
// IMPORTANT: Top-level-await is enabled, which means that return value
|
|
// of module evaluation is a promise.
|
|
//
|
|
// This promise is internal, and not the same one that gets returned to
|
|
// the user. We add an empty `.catch()` handler so that it does not result
|
|
// in an exception if it rejects. That will instead happen for the other
|
|
// promise if not handled by the user.
|
|
//
|
|
// For more details see:
|
|
// https://github.com/denoland/deno/issues/4908
|
|
// https://v8.dev/features/top-level-await#module-execution-order
|
|
let scope = &mut self.handle_scope();
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
let module = v8::Local::new(tc_scope, &module_handle);
|
|
let maybe_value = module.evaluate(tc_scope);
|
|
|
|
// Update status after evaluating.
|
|
let status = module.get_status();
|
|
|
|
if let Some(value) = maybe_value {
|
|
assert!(
|
|
status == v8::ModuleStatus::Evaluated
|
|
|| status == v8::ModuleStatus::Errored
|
|
);
|
|
let promise = v8::Local::<v8::Promise>::try_from(value)
|
|
.expect("Expected to get promise as module evaluation result");
|
|
let empty_fn = |_scope: &mut v8::HandleScope,
|
|
_args: v8::FunctionCallbackArguments,
|
|
_rv: v8::ReturnValue| {};
|
|
let empty_fn = v8::FunctionTemplate::new(tc_scope, empty_fn);
|
|
let empty_fn = empty_fn.get_function(tc_scope).unwrap();
|
|
promise.catch(tc_scope, empty_fn);
|
|
let mut state = state_rc.borrow_mut();
|
|
let promise_global = v8::Global::new(tc_scope, promise);
|
|
let module_global = v8::Global::new(tc_scope, module);
|
|
|
|
let dyn_import_mod_evaluate = DynImportModEvaluate {
|
|
load_id,
|
|
module_id: id,
|
|
promise: promise_global,
|
|
module: module_global,
|
|
};
|
|
|
|
state.pending_dyn_mod_evaluate.push(dyn_import_mod_evaluate);
|
|
} else if tc_scope.has_terminated() || tc_scope.is_execution_terminating() {
|
|
return Err(
|
|
generic_error("Cannot evaluate dynamically imported module, because JavaScript execution has been terminated.")
|
|
);
|
|
} else {
|
|
assert!(status == v8::ModuleStatus::Errored);
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
// TODO(bartlomieju): make it return `ModuleEvaluationFuture`?
|
|
/// Evaluates an already instantiated ES module.
|
|
///
|
|
/// Returns a receiver handle that resolves when module promise resolves.
|
|
/// Implementors must manually call [`JsRuntime::run_event_loop`] to drive
|
|
/// module evaluation future.
|
|
///
|
|
/// `Error` can usually be downcast to `JsError` and should be awaited and
|
|
/// checked after [`JsRuntime::run_event_loop`] completion.
|
|
///
|
|
/// This function panics if module has not been instantiated.
|
|
pub fn mod_evaluate(
|
|
&mut self,
|
|
id: ModuleId,
|
|
) -> oneshot::Receiver<Result<(), Error>> {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
let scope = &mut self.handle_scope();
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
let module = module_map_rc
|
|
.borrow()
|
|
.get_handle(id)
|
|
.map(|handle| v8::Local::new(tc_scope, handle))
|
|
.expect("ModuleInfo not found");
|
|
let mut status = module.get_status();
|
|
assert_eq!(status, v8::ModuleStatus::Instantiated);
|
|
|
|
let (sender, receiver) = oneshot::channel();
|
|
|
|
// IMPORTANT: Top-level-await is enabled, which means that return value
|
|
// of module evaluation is a promise.
|
|
//
|
|
// Because that promise is created internally by V8, when error occurs during
|
|
// module evaluation the promise is rejected, and since the promise has no rejection
|
|
// handler it will result in call to `bindings::promise_reject_callback` adding
|
|
// the promise to pending promise rejection table - meaning JsRuntime will return
|
|
// error on next poll().
|
|
//
|
|
// This situation is not desirable as we want to manually return error at the
|
|
// end of this function to handle it further. It means we need to manually
|
|
// remove this promise from pending promise rejection table.
|
|
//
|
|
// For more details see:
|
|
// https://github.com/denoland/deno/issues/4908
|
|
// https://v8.dev/features/top-level-await#module-execution-order
|
|
{
|
|
let mut state = state_rc.borrow_mut();
|
|
assert!(
|
|
state.pending_mod_evaluate.is_none(),
|
|
"There is already pending top level module evaluation"
|
|
);
|
|
state.pending_mod_evaluate = Some(ModEvaluate {
|
|
promise: None,
|
|
has_evaluated: false,
|
|
handled_promise_rejections: vec![],
|
|
sender,
|
|
});
|
|
}
|
|
|
|
let maybe_value = module.evaluate(tc_scope);
|
|
{
|
|
let mut state = state_rc.borrow_mut();
|
|
let pending_mod_evaluate = state.pending_mod_evaluate.as_mut().unwrap();
|
|
pending_mod_evaluate.has_evaluated = true;
|
|
}
|
|
|
|
// Update status after evaluating.
|
|
status = module.get_status();
|
|
|
|
let explicit_terminate_exception =
|
|
state_rc.borrow_mut().explicit_terminate_exception.take();
|
|
if let Some(exception) = explicit_terminate_exception {
|
|
let exception = v8::Local::new(tc_scope, exception);
|
|
let pending_mod_evaluate = {
|
|
let mut state = state_rc.borrow_mut();
|
|
state.pending_mod_evaluate.take().unwrap()
|
|
};
|
|
pending_mod_evaluate
|
|
.sender
|
|
.send(exception_to_err_result(tc_scope, exception, false))
|
|
.expect("Failed to send module evaluation error.");
|
|
} else if let Some(value) = maybe_value {
|
|
assert!(
|
|
status == v8::ModuleStatus::Evaluated
|
|
|| status == v8::ModuleStatus::Errored
|
|
);
|
|
let promise = v8::Local::<v8::Promise>::try_from(value)
|
|
.expect("Expected to get promise as module evaluation result");
|
|
let promise_global = v8::Global::new(tc_scope, promise);
|
|
let mut state = state_rc.borrow_mut();
|
|
{
|
|
let pending_mod_evaluate = state.pending_mod_evaluate.as_ref().unwrap();
|
|
let pending_rejection_was_already_handled = pending_mod_evaluate
|
|
.handled_promise_rejections
|
|
.contains(&promise_global);
|
|
if !pending_rejection_was_already_handled {
|
|
state.pending_promise_exceptions.remove(&promise_global);
|
|
}
|
|
}
|
|
let promise_global = v8::Global::new(tc_scope, promise);
|
|
state.pending_mod_evaluate.as_mut().unwrap().promise =
|
|
Some(promise_global);
|
|
tc_scope.perform_microtask_checkpoint();
|
|
} else if tc_scope.has_terminated() || tc_scope.is_execution_terminating() {
|
|
let pending_mod_evaluate = {
|
|
let mut state = state_rc.borrow_mut();
|
|
state.pending_mod_evaluate.take().unwrap()
|
|
};
|
|
pending_mod_evaluate.sender.send(Err(
|
|
generic_error("Cannot evaluate module, because JavaScript execution has been terminated.")
|
|
)).expect("Failed to send module evaluation error.");
|
|
} else {
|
|
assert!(status == v8::ModuleStatus::Errored);
|
|
}
|
|
|
|
receiver
|
|
}
|
|
|
|
fn dynamic_import_reject(
|
|
&mut self,
|
|
id: ModuleLoadId,
|
|
exception: v8::Global<v8::Value>,
|
|
) {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
let scope = &mut self.handle_scope();
|
|
|
|
let resolver_handle = module_map_rc
|
|
.borrow_mut()
|
|
.dynamic_import_map
|
|
.remove(&id)
|
|
.expect("Invalid dynamic import id");
|
|
let resolver = resolver_handle.open(scope);
|
|
|
|
// IMPORTANT: No borrows to `ModuleMap` can be held at this point because
|
|
// rejecting the promise might initiate another `import()` which will
|
|
// in turn call `bindings::host_import_module_dynamically_callback` which
|
|
// will reach into `ModuleMap` from within the isolate.
|
|
let exception = v8::Local::new(scope, exception);
|
|
resolver.reject(scope, exception).unwrap();
|
|
scope.perform_microtask_checkpoint();
|
|
}
|
|
|
|
fn dynamic_import_resolve(&mut self, id: ModuleLoadId, mod_id: ModuleId) {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
let scope = &mut self.handle_scope();
|
|
|
|
let resolver_handle = module_map_rc
|
|
.borrow_mut()
|
|
.dynamic_import_map
|
|
.remove(&id)
|
|
.expect("Invalid dynamic import id");
|
|
let resolver = resolver_handle.open(scope);
|
|
|
|
let module = {
|
|
module_map_rc
|
|
.borrow()
|
|
.get_handle(mod_id)
|
|
.map(|handle| v8::Local::new(scope, handle))
|
|
.expect("Dyn import module info not found")
|
|
};
|
|
// Resolution success
|
|
assert_eq!(module.get_status(), v8::ModuleStatus::Evaluated);
|
|
|
|
// IMPORTANT: No borrows to `ModuleMap` can be held at this point because
|
|
// resolving the promise might initiate another `import()` which will
|
|
// in turn call `bindings::host_import_module_dynamically_callback` which
|
|
// will reach into `ModuleMap` from within the isolate.
|
|
let module_namespace = module.get_module_namespace();
|
|
resolver.resolve(scope, module_namespace).unwrap();
|
|
state_rc.borrow_mut().dyn_module_evaluate_idle_counter = 0;
|
|
scope.perform_microtask_checkpoint();
|
|
}
|
|
|
|
fn prepare_dyn_imports(
|
|
&mut self,
|
|
cx: &mut Context,
|
|
) -> Poll<Result<(), Error>> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
|
|
if module_map_rc.borrow().preparing_dynamic_imports.is_empty() {
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
|
|
loop {
|
|
let poll_result = module_map_rc
|
|
.borrow_mut()
|
|
.preparing_dynamic_imports
|
|
.poll_next_unpin(cx);
|
|
|
|
if let Poll::Ready(Some(prepare_poll)) = poll_result {
|
|
let dyn_import_id = prepare_poll.0;
|
|
let prepare_result = prepare_poll.1;
|
|
|
|
match prepare_result {
|
|
Ok(load) => {
|
|
module_map_rc
|
|
.borrow_mut()
|
|
.pending_dynamic_imports
|
|
.push(load.into_future());
|
|
}
|
|
Err(err) => {
|
|
let exception = to_v8_type_error(&mut self.handle_scope(), err);
|
|
self.dynamic_import_reject(dyn_import_id, exception);
|
|
}
|
|
}
|
|
// Continue polling for more prepared dynamic imports.
|
|
continue;
|
|
}
|
|
|
|
// There are no active dynamic import loads, or none are ready.
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
}
|
|
|
|
fn poll_dyn_imports(&mut self, cx: &mut Context) -> Poll<Result<(), Error>> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
|
|
if module_map_rc.borrow().pending_dynamic_imports.is_empty() {
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
|
|
loop {
|
|
let poll_result = module_map_rc
|
|
.borrow_mut()
|
|
.pending_dynamic_imports
|
|
.poll_next_unpin(cx);
|
|
|
|
if let Poll::Ready(Some(load_stream_poll)) = poll_result {
|
|
let maybe_result = load_stream_poll.0;
|
|
let mut load = load_stream_poll.1;
|
|
let dyn_import_id = load.id;
|
|
|
|
if let Some(load_stream_result) = maybe_result {
|
|
match load_stream_result {
|
|
Ok((request, info)) => {
|
|
// A module (not necessarily the one dynamically imported) has been
|
|
// fetched. Create and register it, and if successful, poll for the
|
|
// next recursive-load event related to this dynamic import.
|
|
let register_result = load.register_and_recurse(
|
|
&mut self.handle_scope(),
|
|
&request,
|
|
&info,
|
|
);
|
|
|
|
match register_result {
|
|
Ok(()) => {
|
|
// Keep importing until it's fully drained
|
|
module_map_rc
|
|
.borrow_mut()
|
|
.pending_dynamic_imports
|
|
.push(load.into_future());
|
|
}
|
|
Err(err) => {
|
|
let exception = match err {
|
|
ModuleError::Exception(e) => e,
|
|
ModuleError::Other(e) => {
|
|
to_v8_type_error(&mut self.handle_scope(), e)
|
|
}
|
|
};
|
|
self.dynamic_import_reject(dyn_import_id, exception)
|
|
}
|
|
}
|
|
}
|
|
Err(err) => {
|
|
// A non-javascript error occurred; this could be due to a an invalid
|
|
// module specifier, or a problem with the source map, or a failure
|
|
// to fetch the module source code.
|
|
let exception = to_v8_type_error(&mut self.handle_scope(), err);
|
|
self.dynamic_import_reject(dyn_import_id, exception);
|
|
}
|
|
}
|
|
} else {
|
|
// The top-level module from a dynamic import has been instantiated.
|
|
// Load is done.
|
|
let module_id =
|
|
load.root_module_id.expect("Root module should be loaded");
|
|
let result = self.instantiate_module(module_id);
|
|
if let Err(exception) = result {
|
|
self.dynamic_import_reject(dyn_import_id, exception);
|
|
}
|
|
self.dynamic_import_module_evaluate(dyn_import_id, module_id)?;
|
|
}
|
|
|
|
// Continue polling for more ready dynamic imports.
|
|
continue;
|
|
}
|
|
|
|
// There are no active dynamic import loads, or none are ready.
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
}
|
|
|
|
/// "deno_core" runs V8 with Top Level Await enabled. It means that each
|
|
/// module evaluation returns a promise from V8.
|
|
/// Feature docs: https://v8.dev/features/top-level-await
|
|
///
|
|
/// This promise resolves after all dependent modules have also
|
|
/// resolved. Each dependent module may perform calls to "import()" and APIs
|
|
/// using async ops will add futures to the runtime's event loop.
|
|
/// It means that the promise returned from module evaluation will
|
|
/// resolve only after all futures in the event loop are done.
|
|
///
|
|
/// Thus during turn of event loop we need to check if V8 has
|
|
/// resolved or rejected the promise. If the promise is still pending
|
|
/// then another turn of event loop must be performed.
|
|
fn evaluate_pending_module(&mut self) {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
|
|
let maybe_module_evaluation =
|
|
state_rc.borrow_mut().pending_mod_evaluate.take();
|
|
|
|
if maybe_module_evaluation.is_none() {
|
|
return;
|
|
}
|
|
|
|
let mut module_evaluation = maybe_module_evaluation.unwrap();
|
|
let scope = &mut self.handle_scope();
|
|
|
|
let promise_global = module_evaluation.promise.clone().unwrap();
|
|
let promise = promise_global.open(scope);
|
|
let promise_state = promise.state();
|
|
|
|
match promise_state {
|
|
v8::PromiseState::Pending => {
|
|
// NOTE: `poll_event_loop` will decide if
|
|
// runtime would be woken soon
|
|
state_rc.borrow_mut().pending_mod_evaluate = Some(module_evaluation);
|
|
}
|
|
v8::PromiseState::Fulfilled => {
|
|
scope.perform_microtask_checkpoint();
|
|
// Receiver end might have been already dropped, ignore the result
|
|
let _ = module_evaluation.sender.send(Ok(()));
|
|
module_evaluation.handled_promise_rejections.clear();
|
|
}
|
|
v8::PromiseState::Rejected => {
|
|
let exception = promise.result(scope);
|
|
scope.perform_microtask_checkpoint();
|
|
|
|
// Receiver end might have been already dropped, ignore the result
|
|
if module_evaluation
|
|
.handled_promise_rejections
|
|
.contains(&promise_global)
|
|
{
|
|
let _ = module_evaluation.sender.send(Ok(()));
|
|
module_evaluation.handled_promise_rejections.clear();
|
|
} else {
|
|
let _ = module_evaluation
|
|
.sender
|
|
.send(exception_to_err_result(scope, exception, false));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Returns true if some dynamic import was resolved.
|
|
fn evaluate_dyn_imports(&mut self) -> bool {
|
|
let mut resolved_any = false;
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let mut still_pending = vec![];
|
|
let pending =
|
|
std::mem::take(&mut state_rc.borrow_mut().pending_dyn_mod_evaluate);
|
|
for pending_dyn_evaluate in pending {
|
|
let maybe_result = {
|
|
let scope = &mut self.handle_scope();
|
|
|
|
let module_id = pending_dyn_evaluate.module_id;
|
|
let promise = pending_dyn_evaluate.promise.open(scope);
|
|
let _module = pending_dyn_evaluate.module.open(scope);
|
|
let promise_state = promise.state();
|
|
|
|
match promise_state {
|
|
v8::PromiseState::Pending => {
|
|
still_pending.push(pending_dyn_evaluate);
|
|
None
|
|
}
|
|
v8::PromiseState::Fulfilled => {
|
|
Some(Ok((pending_dyn_evaluate.load_id, module_id)))
|
|
}
|
|
v8::PromiseState::Rejected => {
|
|
let exception = promise.result(scope);
|
|
let exception = v8::Global::new(scope, exception);
|
|
Some(Err((pending_dyn_evaluate.load_id, exception)))
|
|
}
|
|
}
|
|
};
|
|
|
|
if let Some(result) = maybe_result {
|
|
resolved_any = true;
|
|
match result {
|
|
Ok((dyn_import_id, module_id)) => {
|
|
self.dynamic_import_resolve(dyn_import_id, module_id);
|
|
}
|
|
Err((dyn_import_id, exception)) => {
|
|
self.dynamic_import_reject(dyn_import_id, exception);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
state_rc.borrow_mut().pending_dyn_mod_evaluate = still_pending;
|
|
resolved_any
|
|
}
|
|
|
|
/// Asynchronously load specified module and all of its dependencies.
|
|
///
|
|
/// The module will be marked as "main", and because of that
|
|
/// "import.meta.main" will return true when checked inside that module.
|
|
///
|
|
/// User must call [`JsRuntime::mod_evaluate`] with returned `ModuleId`
|
|
/// manually after load is finished.
|
|
pub async fn load_main_module(
|
|
&mut self,
|
|
specifier: &ModuleSpecifier,
|
|
code: Option<String>,
|
|
) -> Result<ModuleId, Error> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
if let Some(code) = code {
|
|
let scope = &mut self.handle_scope();
|
|
module_map_rc
|
|
.borrow_mut()
|
|
.new_es_module(
|
|
scope,
|
|
// main module
|
|
true,
|
|
specifier.as_str(),
|
|
code.as_bytes(),
|
|
)
|
|
.map_err(|e| match e {
|
|
ModuleError::Exception(exception) => {
|
|
let exception = v8::Local::new(scope, exception);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
}
|
|
ModuleError::Other(error) => error,
|
|
})?;
|
|
}
|
|
|
|
let mut load =
|
|
ModuleMap::load_main(module_map_rc.clone(), specifier.as_str()).await?;
|
|
|
|
while let Some(load_result) = load.next().await {
|
|
let (request, info) = load_result?;
|
|
let scope = &mut self.handle_scope();
|
|
load.register_and_recurse(scope, &request, &info).map_err(
|
|
|e| match e {
|
|
ModuleError::Exception(exception) => {
|
|
let exception = v8::Local::new(scope, exception);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
}
|
|
ModuleError::Other(error) => error,
|
|
},
|
|
)?;
|
|
}
|
|
|
|
let root_id = load.root_module_id.expect("Root module should be loaded");
|
|
self.instantiate_module(root_id).map_err(|e| {
|
|
let scope = &mut self.handle_scope();
|
|
let exception = v8::Local::new(scope, e);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
})?;
|
|
Ok(root_id)
|
|
}
|
|
|
|
/// Asynchronously load specified ES module and all of its dependencies.
|
|
///
|
|
/// This method is meant to be used when loading some utility code that
|
|
/// might be later imported by the main module (ie. an entry point module).
|
|
///
|
|
/// User must call [`JsRuntime::mod_evaluate`] with returned `ModuleId`
|
|
/// manually after load is finished.
|
|
pub async fn load_side_module(
|
|
&mut self,
|
|
specifier: &ModuleSpecifier,
|
|
code: Option<String>,
|
|
) -> Result<ModuleId, Error> {
|
|
let module_map_rc = Self::module_map(self.v8_isolate());
|
|
if let Some(code) = code {
|
|
let scope = &mut self.handle_scope();
|
|
module_map_rc
|
|
.borrow_mut()
|
|
.new_es_module(
|
|
scope,
|
|
// not main module
|
|
false,
|
|
specifier.as_str(),
|
|
code.as_bytes(),
|
|
)
|
|
.map_err(|e| match e {
|
|
ModuleError::Exception(exception) => {
|
|
let exception = v8::Local::new(scope, exception);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
}
|
|
ModuleError::Other(error) => error,
|
|
})?;
|
|
}
|
|
|
|
let mut load =
|
|
ModuleMap::load_side(module_map_rc.clone(), specifier.as_str()).await?;
|
|
|
|
while let Some(load_result) = load.next().await {
|
|
let (request, info) = load_result?;
|
|
let scope = &mut self.handle_scope();
|
|
load.register_and_recurse(scope, &request, &info).map_err(
|
|
|e| match e {
|
|
ModuleError::Exception(exception) => {
|
|
let exception = v8::Local::new(scope, exception);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
}
|
|
ModuleError::Other(error) => error,
|
|
},
|
|
)?;
|
|
}
|
|
|
|
let root_id = load.root_module_id.expect("Root module should be loaded");
|
|
self.instantiate_module(root_id).map_err(|e| {
|
|
let scope = &mut self.handle_scope();
|
|
let exception = v8::Local::new(scope, e);
|
|
exception_to_err_result::<()>(scope, exception, false).unwrap_err()
|
|
})?;
|
|
Ok(root_id)
|
|
}
|
|
|
|
fn check_promise_exceptions(&mut self) -> Result<(), Error> {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
let mut state = state_rc.borrow_mut();
|
|
|
|
if state.pending_promise_exceptions.is_empty() {
|
|
return Ok(());
|
|
}
|
|
|
|
let key = {
|
|
state
|
|
.pending_promise_exceptions
|
|
.keys()
|
|
.next()
|
|
.unwrap()
|
|
.clone()
|
|
};
|
|
let handle = state.pending_promise_exceptions.remove(&key).unwrap();
|
|
drop(state);
|
|
|
|
let scope = &mut self.handle_scope();
|
|
let exception = v8::Local::new(scope, handle);
|
|
exception_to_err_result(scope, exception, true)
|
|
}
|
|
|
|
// Send finished responses to JS
|
|
fn resolve_async_ops(&mut self, cx: &mut Context) -> Result<(), Error> {
|
|
let state_rc = Self::state(self.v8_isolate());
|
|
|
|
let js_recv_cb_handle = state_rc.borrow().js_recv_cb.clone().unwrap();
|
|
let scope = &mut self.handle_scope();
|
|
|
|
// We return async responses to JS in unbounded batches (may change),
|
|
// each batch is a flat vector of tuples:
|
|
// `[promise_id1, op_result1, promise_id2, op_result2, ...]`
|
|
// promise_id is a simple integer, op_result is an ops::OpResult
|
|
// which contains a value OR an error, encoded as a tuple.
|
|
// This batch is received in JS via the special `arguments` variable
|
|
// and then each tuple is used to resolve or reject promises
|
|
let mut args: Vec<v8::Local<v8::Value>> = vec![];
|
|
|
|
// Now handle actual ops.
|
|
{
|
|
let mut state = state_rc.borrow_mut();
|
|
state.have_unpolled_ops = false;
|
|
|
|
while let Poll::Ready(Some(item)) = state.pending_ops.poll_next_unpin(cx)
|
|
{
|
|
let (promise_id, op_id, resp) = item;
|
|
state.unrefed_ops.remove(&promise_id);
|
|
state.op_state.borrow().tracker.track_async_completed(op_id);
|
|
args.push(v8::Integer::new(scope, promise_id as i32).into());
|
|
args.push(resp.to_v8(scope).unwrap());
|
|
}
|
|
}
|
|
|
|
if args.is_empty() {
|
|
return Ok(());
|
|
}
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
let js_recv_cb = js_recv_cb_handle.open(tc_scope);
|
|
let this = v8::undefined(tc_scope).into();
|
|
js_recv_cb.call(tc_scope, this, args.as_slice());
|
|
|
|
match tc_scope.exception() {
|
|
None => Ok(()),
|
|
Some(exception) => exception_to_err_result(tc_scope, exception, false),
|
|
}
|
|
}
|
|
|
|
fn drain_macrotasks(&mut self) -> Result<(), Error> {
|
|
let state = Self::state(self.v8_isolate());
|
|
|
|
if state.borrow().js_macrotask_cbs.is_empty() {
|
|
return Ok(());
|
|
}
|
|
|
|
let js_macrotask_cb_handles = state.borrow().js_macrotask_cbs.clone();
|
|
let scope = &mut self.handle_scope();
|
|
|
|
for js_macrotask_cb_handle in js_macrotask_cb_handles {
|
|
let js_macrotask_cb = js_macrotask_cb_handle.open(scope);
|
|
|
|
// Repeatedly invoke macrotask callback until it returns true (done),
|
|
// such that ready microtasks would be automatically run before
|
|
// next macrotask is processed.
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
let this = v8::undefined(tc_scope).into();
|
|
loop {
|
|
let is_done = js_macrotask_cb.call(tc_scope, this, &[]);
|
|
|
|
if let Some(exception) = tc_scope.exception() {
|
|
return exception_to_err_result(tc_scope, exception, false);
|
|
}
|
|
|
|
if tc_scope.has_terminated() || tc_scope.is_execution_terminating() {
|
|
return Ok(());
|
|
}
|
|
|
|
let is_done = is_done.unwrap();
|
|
if is_done.is_true() {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn drain_nexttick(&mut self) -> Result<(), Error> {
|
|
let state = Self::state(self.v8_isolate());
|
|
|
|
if state.borrow().js_nexttick_cbs.is_empty() {
|
|
return Ok(());
|
|
}
|
|
|
|
if !state.borrow().has_tick_scheduled {
|
|
let scope = &mut self.handle_scope();
|
|
scope.perform_microtask_checkpoint();
|
|
}
|
|
|
|
// TODO(bartlomieju): Node also checks for absence of "rejection_to_warn"
|
|
if !state.borrow().has_tick_scheduled {
|
|
return Ok(());
|
|
}
|
|
|
|
let js_nexttick_cb_handles = state.borrow().js_nexttick_cbs.clone();
|
|
let scope = &mut self.handle_scope();
|
|
|
|
for js_nexttick_cb_handle in js_nexttick_cb_handles {
|
|
let js_nexttick_cb = js_nexttick_cb_handle.open(scope);
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
let this = v8::undefined(tc_scope).into();
|
|
js_nexttick_cb.call(tc_scope, this, &[]);
|
|
|
|
if let Some(exception) = tc_scope.exception() {
|
|
return exception_to_err_result(tc_scope, exception, false);
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
/// A representation of a JavaScript realm tied to a [`JsRuntime`], that allows
|
|
/// execution in the realm's context.
|
|
///
|
|
/// A [`JsRealm`] instance does not hold ownership of its corresponding realm,
|
|
/// so they can be created and dropped as needed. And since every operation on
|
|
/// them requires passing a mutable reference to the [`JsRuntime`], multiple
|
|
/// [`JsRealm`] instances won't overlap.
|
|
///
|
|
/// # Panics
|
|
///
|
|
/// Every method of [`JsRealm`] will panic if you call if with a reference to a
|
|
/// [`v8::Isolate`] other than the one that corresponds to the current context.
|
|
///
|
|
/// # Lifetime of the realm
|
|
///
|
|
/// A [`JsRealm`] instance will keep the underlying V8 context alive even if it
|
|
/// would have otherwise been garbage collected.
|
|
#[derive(Clone)]
|
|
pub struct JsRealm(v8::Global<v8::Context>);
|
|
impl JsRealm {
|
|
pub fn new(context: v8::Global<v8::Context>) -> Self {
|
|
JsRealm(context)
|
|
}
|
|
|
|
pub fn context(&self) -> &v8::Global<v8::Context> {
|
|
&self.0
|
|
}
|
|
|
|
pub fn handle_scope<'s>(
|
|
&self,
|
|
isolate: &'s mut v8::Isolate,
|
|
) -> v8::HandleScope<'s> {
|
|
v8::HandleScope::with_context(isolate, &self.0)
|
|
}
|
|
|
|
pub fn global_object<'s>(
|
|
&self,
|
|
isolate: &'s mut v8::Isolate,
|
|
) -> v8::Local<'s, v8::Object> {
|
|
let scope = &mut self.handle_scope(isolate);
|
|
self.0.open(scope).global(scope)
|
|
}
|
|
|
|
/// Executes traditional JavaScript code (traditional = not ES modules) in the
|
|
/// realm's context.
|
|
///
|
|
/// `name` can be a filepath or any other string, eg.
|
|
///
|
|
/// - "/some/file/path.js"
|
|
/// - "<anon>"
|
|
/// - "[native code]"
|
|
///
|
|
/// The same `name` value can be used for multiple executions.
|
|
///
|
|
/// `Error` can usually be downcast to `JsError`.
|
|
pub fn execute_script(
|
|
&self,
|
|
isolate: &mut v8::Isolate,
|
|
name: &str,
|
|
source_code: &str,
|
|
) -> Result<v8::Global<v8::Value>, Error> {
|
|
let scope = &mut self.handle_scope(isolate);
|
|
|
|
let source = v8::String::new(scope, source_code).unwrap();
|
|
let name = v8::String::new(scope, name).unwrap();
|
|
let origin = bindings::script_origin(scope, name);
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
let script = match v8::Script::compile(tc_scope, source, Some(&origin)) {
|
|
Some(script) => script,
|
|
None => {
|
|
let exception = tc_scope.exception().unwrap();
|
|
return exception_to_err_result(tc_scope, exception, false);
|
|
}
|
|
};
|
|
|
|
match script.run(tc_scope) {
|
|
Some(value) => {
|
|
let value_handle = v8::Global::new(tc_scope, value);
|
|
Ok(value_handle)
|
|
}
|
|
None => {
|
|
assert!(tc_scope.has_caught());
|
|
let exception = tc_scope.exception().unwrap();
|
|
exception_to_err_result(tc_scope, exception, false)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO(andreubotella): `mod_evaluate`, `load_main_module`, `load_side_module`
|
|
}
|
|
|
|
#[inline]
|
|
pub fn queue_async_op(
|
|
scope: &v8::Isolate,
|
|
op: impl Future<Output = (PromiseId, OpId, OpResult)> + 'static,
|
|
) {
|
|
let state_rc = JsRuntime::state(scope);
|
|
let mut state = state_rc.borrow_mut();
|
|
state.pending_ops.push(OpCall::eager(op));
|
|
state.have_unpolled_ops = true;
|
|
}
|
|
|
|
#[cfg(test)]
|
|
pub mod tests {
|
|
use super::*;
|
|
use crate::error::custom_error;
|
|
use crate::error::AnyError;
|
|
use crate::modules::ModuleSource;
|
|
use crate::modules::ModuleSourceFuture;
|
|
use crate::modules::ModuleType;
|
|
use crate::ZeroCopyBuf;
|
|
use deno_ops::op;
|
|
use futures::future::lazy;
|
|
use std::ops::FnOnce;
|
|
use std::pin::Pin;
|
|
use std::rc::Rc;
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
|
use std::sync::Arc;
|
|
// deno_ops macros generate code assuming deno_core in scope.
|
|
mod deno_core {
|
|
pub use crate::*;
|
|
}
|
|
|
|
pub fn run_in_task<F>(f: F)
|
|
where
|
|
F: FnOnce(&mut Context) + Send + 'static,
|
|
{
|
|
futures::executor::block_on(lazy(move |cx| f(cx)));
|
|
}
|
|
|
|
#[derive(Copy, Clone)]
|
|
enum Mode {
|
|
Async,
|
|
AsyncZeroCopy(bool),
|
|
}
|
|
|
|
struct TestState {
|
|
mode: Mode,
|
|
dispatch_count: Arc<AtomicUsize>,
|
|
}
|
|
|
|
#[op]
|
|
async fn op_test(
|
|
rc_op_state: Rc<RefCell<OpState>>,
|
|
control: u8,
|
|
buf: Option<ZeroCopyBuf>,
|
|
) -> Result<u8, AnyError> {
|
|
let op_state_ = rc_op_state.borrow();
|
|
let test_state = op_state_.borrow::<TestState>();
|
|
test_state.dispatch_count.fetch_add(1, Ordering::Relaxed);
|
|
match test_state.mode {
|
|
Mode::Async => {
|
|
assert_eq!(control, 42);
|
|
Ok(43)
|
|
}
|
|
Mode::AsyncZeroCopy(has_buffer) => {
|
|
assert_eq!(buf.is_some(), has_buffer);
|
|
if let Some(buf) = buf {
|
|
assert_eq!(buf.len(), 1);
|
|
}
|
|
Ok(43)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn setup(mode: Mode) -> (JsRuntime, Arc<AtomicUsize>) {
|
|
let dispatch_count = Arc::new(AtomicUsize::new(0));
|
|
let dispatch_count2 = dispatch_count.clone();
|
|
let ext = Extension::builder()
|
|
.ops(vec![op_test::decl()])
|
|
.state(move |state| {
|
|
state.put(TestState {
|
|
mode,
|
|
dispatch_count: dispatch_count2.clone(),
|
|
});
|
|
Ok(())
|
|
})
|
|
.build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
get_error_class_fn: Some(&|error| {
|
|
crate::error::get_custom_error_class(error).unwrap()
|
|
}),
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"setup.js",
|
|
r#"
|
|
function assert(cond) {
|
|
if (!cond) {
|
|
throw Error("assert");
|
|
}
|
|
}
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
(runtime, dispatch_count)
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::Async);
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
let control = 42;
|
|
Deno.core.opAsync("op_test", control);
|
|
async function main() {
|
|
Deno.core.opAsync("op_test", control);
|
|
}
|
|
main();
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_async_promise_id() {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
const p = Deno.core.opAsync("op_test", 42);
|
|
if (p[Symbol.for("Deno.core.internalPromiseId")] == undefined) {
|
|
throw new Error("missing id on returned promise");
|
|
}
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_ref_unref_ops() {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
var promiseIdSymbol = Symbol.for("Deno.core.internalPromiseId");
|
|
var p1 = Deno.core.opAsync("op_test", 42);
|
|
var p2 = Deno.core.opAsync("op_test", 42);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
{
|
|
let isolate = runtime.v8_isolate();
|
|
let state_rc = JsRuntime::state(isolate);
|
|
let state = state_rc.borrow();
|
|
assert_eq!(state.pending_ops.len(), 2);
|
|
assert_eq!(state.unrefed_ops.len(), 0);
|
|
}
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
Deno.core.opSync("op_unref_op", p1[promiseIdSymbol]);
|
|
Deno.core.opSync("op_unref_op", p2[promiseIdSymbol]);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
{
|
|
let isolate = runtime.v8_isolate();
|
|
let state_rc = JsRuntime::state(isolate);
|
|
let state = state_rc.borrow();
|
|
assert_eq!(state.pending_ops.len(), 2);
|
|
assert_eq!(state.unrefed_ops.len(), 2);
|
|
}
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
Deno.core.opSync("op_ref_op", p1[promiseIdSymbol]);
|
|
Deno.core.opSync("op_ref_op", p2[promiseIdSymbol]);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
{
|
|
let isolate = runtime.v8_isolate();
|
|
let state_rc = JsRuntime::state(isolate);
|
|
let state = state_rc.borrow();
|
|
assert_eq!(state.pending_ops.len(), 2);
|
|
assert_eq!(state.unrefed_ops.len(), 0);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch_no_zero_copy_buf() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncZeroCopy(false));
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
Deno.core.opAsync("op_test");
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch_stack_zero_copy_bufs() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncZeroCopy(true));
|
|
runtime
|
|
.execute_script(
|
|
"filename.js",
|
|
r#"
|
|
let zero_copy_a = new Uint8Array([0]);
|
|
Deno.core.opAsync("op_test", null, zero_copy_a);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_execute_script_return_value() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
let value_global = runtime.execute_script("a.js", "a = 1 + 2").unwrap();
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
let value = value_global.open(scope);
|
|
assert_eq!(value.integer_value(scope).unwrap(), 3);
|
|
}
|
|
let value_global = runtime.execute_script("b.js", "b = 'foobar'").unwrap();
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
let value = value_global.open(scope);
|
|
assert!(value.is_string());
|
|
assert_eq!(
|
|
value.to_string(scope).unwrap().to_rust_string_lossy(scope),
|
|
"foobar"
|
|
);
|
|
}
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_poll_value() {
|
|
run_in_task(|cx| {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
let value_global = runtime
|
|
.execute_script("a.js", "Promise.resolve(1 + 2)")
|
|
.unwrap();
|
|
let v = runtime.poll_value(&value_global, cx);
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
assert!(
|
|
matches!(v, Poll::Ready(Ok(v)) if v.open(scope).integer_value(scope).unwrap() == 3)
|
|
);
|
|
}
|
|
|
|
let value_global = runtime
|
|
.execute_script(
|
|
"a.js",
|
|
"Promise.resolve(new Promise(resolve => resolve(2 + 2)))",
|
|
)
|
|
.unwrap();
|
|
let v = runtime.poll_value(&value_global, cx);
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
assert!(
|
|
matches!(v, Poll::Ready(Ok(v)) if v.open(scope).integer_value(scope).unwrap() == 4)
|
|
);
|
|
}
|
|
|
|
let value_global = runtime
|
|
.execute_script("a.js", "Promise.reject(new Error('fail'))")
|
|
.unwrap();
|
|
let v = runtime.poll_value(&value_global, cx);
|
|
assert!(
|
|
matches!(v, Poll::Ready(Err(e)) if e.downcast_ref::<JsError>().unwrap().exception_message == "Uncaught Error: fail")
|
|
);
|
|
|
|
let value_global = runtime
|
|
.execute_script("a.js", "new Promise(resolve => {})")
|
|
.unwrap();
|
|
let v = runtime.poll_value(&value_global, cx);
|
|
matches!(v, Poll::Ready(Err(e)) if e.to_string() == "Promise resolution is still pending but the event loop has already resolved.");
|
|
});
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_resolve_value() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
let value_global = runtime
|
|
.execute_script("a.js", "Promise.resolve(1 + 2)")
|
|
.unwrap();
|
|
let result_global = runtime.resolve_value(value_global).await.unwrap();
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
let value = result_global.open(scope);
|
|
assert_eq!(value.integer_value(scope).unwrap(), 3);
|
|
}
|
|
|
|
let value_global = runtime
|
|
.execute_script(
|
|
"a.js",
|
|
"Promise.resolve(new Promise(resolve => resolve(2 + 2)))",
|
|
)
|
|
.unwrap();
|
|
let result_global = runtime.resolve_value(value_global).await.unwrap();
|
|
{
|
|
let scope = &mut runtime.handle_scope();
|
|
let value = result_global.open(scope);
|
|
assert_eq!(value.integer_value(scope).unwrap(), 4);
|
|
}
|
|
|
|
let value_global = runtime
|
|
.execute_script("a.js", "Promise.reject(new Error('fail'))")
|
|
.unwrap();
|
|
let err = runtime.resolve_value(value_global).await.unwrap_err();
|
|
assert_eq!(
|
|
"Uncaught Error: fail",
|
|
err.downcast::<JsError>().unwrap().exception_message
|
|
);
|
|
|
|
let value_global = runtime
|
|
.execute_script("a.js", "new Promise(resolve => {})")
|
|
.unwrap();
|
|
let error_string = runtime
|
|
.resolve_value(value_global)
|
|
.await
|
|
.unwrap_err()
|
|
.to_string();
|
|
assert_eq!(
|
|
"Promise resolution is still pending but the event loop has already resolved.",
|
|
error_string,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn terminate_execution_webassembly() {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
let v8_isolate_handle = runtime.v8_isolate().thread_safe_handle();
|
|
|
|
// Run an infinite loop in Webassemby code, which should be terminated.
|
|
let promise = runtime.execute_script("infinite_wasm_loop.js",
|
|
r#"
|
|
(async () => {
|
|
const wasmCode = new Uint8Array([
|
|
0, 97, 115, 109, 1, 0, 0, 0, 1, 4, 1,
|
|
96, 0, 0, 3, 2, 1, 0, 7, 17, 1, 13,
|
|
105, 110, 102, 105, 110, 105, 116, 101, 95, 108, 111,
|
|
111, 112, 0, 0, 10, 9, 1, 7, 0, 3, 64,
|
|
12, 0, 11, 11,
|
|
]);
|
|
const wasmModule = await WebAssembly.compile(wasmCode);
|
|
globalThis.wasmInstance = new WebAssembly.Instance(wasmModule);
|
|
})()
|
|
"#).unwrap();
|
|
futures::executor::block_on(runtime.resolve_value(promise)).unwrap();
|
|
let terminator_thread = std::thread::spawn(move || {
|
|
std::thread::sleep(std::time::Duration::from_millis(1000));
|
|
|
|
// terminate execution
|
|
let ok = v8_isolate_handle.terminate_execution();
|
|
assert!(ok);
|
|
});
|
|
let err = runtime
|
|
.execute_script(
|
|
"infinite_wasm_loop2.js",
|
|
"globalThis.wasmInstance.exports.infinite_loop();",
|
|
)
|
|
.unwrap_err();
|
|
assert_eq!(err.to_string(), "Uncaught Error: execution terminated");
|
|
// Cancel the execution-terminating exception in order to allow script
|
|
// execution again.
|
|
let ok = runtime.v8_isolate().cancel_terminate_execution();
|
|
assert!(ok);
|
|
|
|
// Verify that the isolate usable again.
|
|
runtime
|
|
.execute_script("simple.js", "1 + 1")
|
|
.expect("execution should be possible again");
|
|
|
|
terminator_thread.join().unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn terminate_execution() {
|
|
let (mut isolate, _dispatch_count) = setup(Mode::Async);
|
|
let v8_isolate_handle = isolate.v8_isolate().thread_safe_handle();
|
|
|
|
let terminator_thread = std::thread::spawn(move || {
|
|
// allow deno to boot and run
|
|
std::thread::sleep(std::time::Duration::from_millis(100));
|
|
|
|
// terminate execution
|
|
let ok = v8_isolate_handle.terminate_execution();
|
|
assert!(ok);
|
|
});
|
|
|
|
// Rn an infinite loop, which should be terminated.
|
|
match isolate.execute_script("infinite_loop.js", "for(;;) {}") {
|
|
Ok(_) => panic!("execution should be terminated"),
|
|
Err(e) => {
|
|
assert_eq!(e.to_string(), "Uncaught Error: execution terminated")
|
|
}
|
|
};
|
|
|
|
// Cancel the execution-terminating exception in order to allow script
|
|
// execution again.
|
|
let ok = isolate.v8_isolate().cancel_terminate_execution();
|
|
assert!(ok);
|
|
|
|
// Verify that the isolate usable again.
|
|
isolate
|
|
.execute_script("simple.js", "1 + 1")
|
|
.expect("execution should be possible again");
|
|
|
|
terminator_thread.join().unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn dangling_shared_isolate() {
|
|
let v8_isolate_handle = {
|
|
// isolate is dropped at the end of this block
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
runtime.v8_isolate().thread_safe_handle()
|
|
};
|
|
|
|
// this should not SEGFAULT
|
|
v8_isolate_handle.terminate_execution();
|
|
}
|
|
|
|
#[test]
|
|
fn syntax_error() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
let src = "hocuspocus(";
|
|
let r = runtime.execute_script("i.js", src);
|
|
let e = r.unwrap_err();
|
|
let js_error = e.downcast::<JsError>().unwrap();
|
|
let frame = js_error.frames.first().unwrap();
|
|
assert_eq!(frame.column_number, Some(12));
|
|
}
|
|
|
|
#[test]
|
|
fn test_encode_decode() {
|
|
run_in_task(|cx| {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
runtime
|
|
.execute_script(
|
|
"encode_decode_test.js",
|
|
include_str!("encode_decode_test.js"),
|
|
)
|
|
.unwrap();
|
|
if let Poll::Ready(Err(_)) = runtime.poll_event_loop(cx, false) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn test_serialize_deserialize() {
|
|
run_in_task(|cx| {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
runtime
|
|
.execute_script(
|
|
"serialize_deserialize_test.js",
|
|
include_str!("serialize_deserialize_test.js"),
|
|
)
|
|
.unwrap();
|
|
if let Poll::Ready(Err(_)) = runtime.poll_event_loop(cx, false) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn test_error_builder() {
|
|
#[op]
|
|
fn op_err() -> Result<(), Error> {
|
|
Err(custom_error("DOMExceptionOperationError", "abc"))
|
|
}
|
|
|
|
pub fn get_error_class_name(_: &Error) -> &'static str {
|
|
"DOMExceptionOperationError"
|
|
}
|
|
|
|
run_in_task(|cx| {
|
|
let ext = Extension::builder().ops(vec![op_err::decl()]).build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
get_error_class_fn: Some(&get_error_class_name),
|
|
..Default::default()
|
|
});
|
|
runtime
|
|
.execute_script(
|
|
"error_builder_test.js",
|
|
include_str!("error_builder_test.js"),
|
|
)
|
|
.unwrap();
|
|
if let Poll::Ready(Err(_)) = runtime.poll_event_loop(cx, false) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn will_snapshot() {
|
|
let snapshot = {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
will_snapshot: true,
|
|
..Default::default()
|
|
});
|
|
runtime.execute_script("a.js", "a = 1 + 2").unwrap();
|
|
runtime.snapshot()
|
|
};
|
|
|
|
let snapshot = Snapshot::JustCreated(snapshot);
|
|
let mut runtime2 = JsRuntime::new(RuntimeOptions {
|
|
startup_snapshot: Some(snapshot),
|
|
..Default::default()
|
|
});
|
|
runtime2
|
|
.execute_script("check.js", "if (a != 3) throw Error('x')")
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_from_boxed_snapshot() {
|
|
let snapshot = {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
will_snapshot: true,
|
|
..Default::default()
|
|
});
|
|
runtime.execute_script("a.js", "a = 1 + 2").unwrap();
|
|
let snap: &[u8] = &*runtime.snapshot();
|
|
Vec::from(snap).into_boxed_slice()
|
|
};
|
|
|
|
let snapshot = Snapshot::Boxed(snapshot);
|
|
let mut runtime2 = JsRuntime::new(RuntimeOptions {
|
|
startup_snapshot: Some(snapshot),
|
|
..Default::default()
|
|
});
|
|
runtime2
|
|
.execute_script("check.js", "if (a != 3) throw Error('x')")
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_get_module_namespace() {
|
|
#[derive(Default)]
|
|
struct ModsLoader;
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, Error> {
|
|
assert_eq!(specifier, "file:///main.js");
|
|
assert_eq!(referrer, ".");
|
|
let s = crate::resolve_import(specifier, referrer).unwrap();
|
|
Ok(s)
|
|
}
|
|
|
|
fn load(
|
|
&self,
|
|
_module_specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<ModuleSpecifier>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<ModuleSourceFuture>> {
|
|
async { Err(generic_error("Module loading is not supported")) }
|
|
.boxed_local()
|
|
}
|
|
}
|
|
|
|
let loader = std::rc::Rc::new(ModsLoader::default());
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
module_loader: Some(loader),
|
|
..Default::default()
|
|
});
|
|
|
|
let specifier = crate::resolve_url("file:///main.js").unwrap();
|
|
let source_code = r#"
|
|
export const a = "b";
|
|
export default 1 + 2;
|
|
"#
|
|
.to_string();
|
|
|
|
let module_id = futures::executor::block_on(
|
|
runtime.load_main_module(&specifier, Some(source_code)),
|
|
)
|
|
.unwrap();
|
|
|
|
let _ = runtime.mod_evaluate(module_id);
|
|
|
|
let module_namespace = runtime.get_module_namespace(module_id).unwrap();
|
|
|
|
let scope = &mut runtime.handle_scope();
|
|
|
|
let module_namespace =
|
|
v8::Local::<v8::Object>::new(scope, module_namespace);
|
|
|
|
assert!(module_namespace.is_module_namespace_object());
|
|
|
|
let unknown_export_name = v8::String::new(scope, "none").unwrap();
|
|
let binding = module_namespace.get(scope, unknown_export_name.into());
|
|
|
|
assert!(binding.is_some());
|
|
assert!(binding.unwrap().is_undefined());
|
|
|
|
let empty_export_name = v8::String::new(scope, "").unwrap();
|
|
let binding = module_namespace.get(scope, empty_export_name.into());
|
|
|
|
assert!(binding.is_some());
|
|
assert!(binding.unwrap().is_undefined());
|
|
|
|
let a_export_name = v8::String::new(scope, "a").unwrap();
|
|
let binding = module_namespace.get(scope, a_export_name.into());
|
|
|
|
assert!(binding.unwrap().is_string());
|
|
assert_eq!(binding.unwrap(), v8::String::new(scope, "b").unwrap());
|
|
|
|
let default_export_name = v8::String::new(scope, "default").unwrap();
|
|
let binding = module_namespace.get(scope, default_export_name.into());
|
|
|
|
assert!(binding.unwrap().is_number());
|
|
assert_eq!(binding.unwrap(), v8::Number::new(scope, 3_f64));
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limits() {
|
|
let create_params =
|
|
v8::Isolate::create_params().heap_limits(0, 3 * 1024 * 1024);
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
create_params: Some(create_params),
|
|
..Default::default()
|
|
});
|
|
let cb_handle = runtime.v8_isolate().thread_safe_handle();
|
|
|
|
let callback_invoke_count = Rc::new(AtomicUsize::new(0));
|
|
let inner_invoke_count = Rc::clone(&callback_invoke_count);
|
|
|
|
runtime.add_near_heap_limit_callback(
|
|
move |current_limit, _initial_limit| {
|
|
inner_invoke_count.fetch_add(1, Ordering::SeqCst);
|
|
cb_handle.terminate_execution();
|
|
current_limit * 2
|
|
},
|
|
);
|
|
let err = runtime
|
|
.execute_script(
|
|
"script name",
|
|
r#"let s = ""; while(true) { s += "Hello"; }"#,
|
|
)
|
|
.expect_err("script should fail");
|
|
assert_eq!(
|
|
"Uncaught Error: execution terminated",
|
|
err.downcast::<JsError>().unwrap().exception_message
|
|
);
|
|
assert!(callback_invoke_count.load(Ordering::SeqCst) > 0)
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limit_cb_remove() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
|
|
runtime.add_near_heap_limit_callback(|current_limit, _initial_limit| {
|
|
current_limit * 2
|
|
});
|
|
runtime.remove_near_heap_limit_callback(3 * 1024 * 1024);
|
|
assert!(runtime.allocations.near_heap_limit_callback_data.is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limit_cb_multiple() {
|
|
let create_params =
|
|
v8::Isolate::create_params().heap_limits(0, 3 * 1024 * 1024);
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
create_params: Some(create_params),
|
|
..Default::default()
|
|
});
|
|
let cb_handle = runtime.v8_isolate().thread_safe_handle();
|
|
|
|
let callback_invoke_count_first = Rc::new(AtomicUsize::new(0));
|
|
let inner_invoke_count_first = Rc::clone(&callback_invoke_count_first);
|
|
runtime.add_near_heap_limit_callback(
|
|
move |current_limit, _initial_limit| {
|
|
inner_invoke_count_first.fetch_add(1, Ordering::SeqCst);
|
|
current_limit * 2
|
|
},
|
|
);
|
|
|
|
let callback_invoke_count_second = Rc::new(AtomicUsize::new(0));
|
|
let inner_invoke_count_second = Rc::clone(&callback_invoke_count_second);
|
|
runtime.add_near_heap_limit_callback(
|
|
move |current_limit, _initial_limit| {
|
|
inner_invoke_count_second.fetch_add(1, Ordering::SeqCst);
|
|
cb_handle.terminate_execution();
|
|
current_limit * 2
|
|
},
|
|
);
|
|
|
|
let err = runtime
|
|
.execute_script(
|
|
"script name",
|
|
r#"let s = ""; while(true) { s += "Hello"; }"#,
|
|
)
|
|
.expect_err("script should fail");
|
|
assert_eq!(
|
|
"Uncaught Error: execution terminated",
|
|
err.downcast::<JsError>().unwrap().exception_message
|
|
);
|
|
assert_eq!(0, callback_invoke_count_first.load(Ordering::SeqCst));
|
|
assert!(callback_invoke_count_second.load(Ordering::SeqCst) > 0);
|
|
}
|
|
|
|
#[test]
|
|
fn es_snapshot() {
|
|
#[derive(Default)]
|
|
struct ModsLoader;
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, Error> {
|
|
assert_eq!(specifier, "file:///main.js");
|
|
assert_eq!(referrer, ".");
|
|
let s = crate::resolve_import(specifier, referrer).unwrap();
|
|
Ok(s)
|
|
}
|
|
|
|
fn load(
|
|
&self,
|
|
_module_specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<ModuleSpecifier>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<ModuleSourceFuture>> {
|
|
unreachable!()
|
|
}
|
|
}
|
|
|
|
let loader = std::rc::Rc::new(ModsLoader::default());
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
module_loader: Some(loader),
|
|
will_snapshot: true,
|
|
..Default::default()
|
|
});
|
|
|
|
let specifier = crate::resolve_url("file:///main.js").unwrap();
|
|
let source_code = "Deno.core.print('hello\\n')".to_string();
|
|
|
|
let module_id = futures::executor::block_on(
|
|
runtime.load_main_module(&specifier, Some(source_code)),
|
|
)
|
|
.unwrap();
|
|
|
|
let _ = runtime.mod_evaluate(module_id);
|
|
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
|
|
|
|
let _snapshot = runtime.snapshot();
|
|
}
|
|
|
|
#[test]
|
|
fn test_error_without_stack() {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
// SyntaxError
|
|
let result = runtime.execute_script(
|
|
"error_without_stack.js",
|
|
r#"
|
|
function main() {
|
|
console.log("asdf);
|
|
}
|
|
|
|
main();
|
|
"#,
|
|
);
|
|
let expected_error = r#"Uncaught SyntaxError: Invalid or unexpected token
|
|
at error_without_stack.js:3:15"#;
|
|
assert_eq!(result.unwrap_err().to_string(), expected_error);
|
|
}
|
|
|
|
#[test]
|
|
fn test_error_stack() {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
let result = runtime.execute_script(
|
|
"error_stack.js",
|
|
r#"
|
|
function assert(cond) {
|
|
if (!cond) {
|
|
throw Error("assert");
|
|
}
|
|
}
|
|
|
|
function main() {
|
|
assert(false);
|
|
}
|
|
|
|
main();
|
|
"#,
|
|
);
|
|
let expected_error = r#"Error: assert
|
|
at assert (error_stack.js:4:11)
|
|
at main (error_stack.js:9:3)
|
|
at error_stack.js:12:1"#;
|
|
assert_eq!(result.unwrap_err().to_string(), expected_error);
|
|
}
|
|
|
|
#[test]
|
|
fn test_error_async_stack() {
|
|
run_in_task(|cx| {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
runtime
|
|
.execute_script(
|
|
"error_async_stack.js",
|
|
r#"
|
|
(async () => {
|
|
const p = (async () => {
|
|
await Promise.resolve().then(() => {
|
|
throw new Error("async");
|
|
});
|
|
})();
|
|
|
|
try {
|
|
await p;
|
|
} catch (error) {
|
|
console.log(error.stack);
|
|
throw error;
|
|
}
|
|
})();"#,
|
|
)
|
|
.unwrap();
|
|
let expected_error = r#"Error: async
|
|
at error_async_stack.js:5:13
|
|
at async error_async_stack.js:4:5
|
|
at async error_async_stack.js:10:5"#;
|
|
|
|
match runtime.poll_event_loop(cx, false) {
|
|
Poll::Ready(Err(e)) => {
|
|
assert_eq!(e.to_string(), expected_error);
|
|
}
|
|
_ => panic!(),
|
|
};
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn test_pump_message_loop() {
|
|
run_in_task(|cx| {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
runtime
|
|
.execute_script(
|
|
"pump_message_loop.js",
|
|
r#"
|
|
function assertEquals(a, b) {
|
|
if (a === b) return;
|
|
throw a + " does not equal " + b;
|
|
}
|
|
const sab = new SharedArrayBuffer(16);
|
|
const i32a = new Int32Array(sab);
|
|
globalThis.resolved = false;
|
|
|
|
(function() {
|
|
const result = Atomics.waitAsync(i32a, 0, 0);
|
|
result.value.then(
|
|
(value) => { assertEquals("ok", value); globalThis.resolved = true; },
|
|
() => { assertUnreachable();
|
|
});
|
|
})();
|
|
|
|
const notify_return_value = Atomics.notify(i32a, 0, 1);
|
|
assertEquals(1, notify_return_value);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
|
|
match runtime.poll_event_loop(cx, false) {
|
|
Poll::Ready(Ok(())) => {}
|
|
_ => panic!(),
|
|
};
|
|
|
|
// noop script, will resolve promise from first script
|
|
runtime
|
|
.execute_script("pump_message_loop2.js", r#"assertEquals(1, 1);"#)
|
|
.unwrap();
|
|
|
|
// check that promise from `Atomics.waitAsync` has been resolved
|
|
runtime
|
|
.execute_script(
|
|
"pump_message_loop3.js",
|
|
r#"assertEquals(globalThis.resolved, true);"#,
|
|
)
|
|
.unwrap();
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn test_core_js_stack_frame() {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
// Call non-existent op so we get error from `core.js`
|
|
let error = runtime
|
|
.execute_script(
|
|
"core_js_stack_frame.js",
|
|
"Deno.core.opSync('non_existent');",
|
|
)
|
|
.unwrap_err();
|
|
let error_string = error.to_string();
|
|
// Test that the script specifier is a URL: `deno:<repo-relative path>`.
|
|
assert!(error_string.contains("deno:core/01_core.js"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_v8_platform() {
|
|
let options = RuntimeOptions {
|
|
v8_platform: Some(v8::new_default_platform(0, false).make_shared()),
|
|
..Default::default()
|
|
};
|
|
let mut runtime = JsRuntime::new(options);
|
|
runtime.execute_script("<none>", "").unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_is_proxy() {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions::default());
|
|
let all_true: v8::Global<v8::Value> = runtime
|
|
.execute_script(
|
|
"is_proxy.js",
|
|
r#"
|
|
(function () {
|
|
const o = { a: 1, b: 2};
|
|
const p = new Proxy(o, {});
|
|
return Deno.core.opSync("op_is_proxy", p) && !Deno.core.opSync("op_is_proxy", o) && !Deno.core.opSync("op_is_proxy", 42);
|
|
})()
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
let mut scope = runtime.handle_scope();
|
|
let all_true = v8::Local::<v8::Value>::new(&mut scope, &all_true);
|
|
assert!(all_true.is_true());
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_async_opstate_borrow() {
|
|
struct InnerState(u64);
|
|
|
|
#[op]
|
|
async fn op_async_borrow(
|
|
op_state: Rc<RefCell<OpState>>,
|
|
) -> Result<(), Error> {
|
|
let n = {
|
|
let op_state = op_state.borrow();
|
|
let inner_state = op_state.borrow::<InnerState>();
|
|
inner_state.0
|
|
};
|
|
// Future must be Poll::Pending on first call
|
|
tokio::time::sleep(std::time::Duration::from_millis(1)).await;
|
|
if n != 42 {
|
|
unreachable!();
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
let extension = Extension::builder()
|
|
.ops(vec![op_async_borrow::decl()])
|
|
.state(|state| {
|
|
state.put(InnerState(42));
|
|
Ok(())
|
|
})
|
|
.build();
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![extension],
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"op_async_borrow.js",
|
|
"Deno.core.opAsync('op_async_borrow')",
|
|
)
|
|
.unwrap();
|
|
runtime.run_event_loop(false).await.unwrap();
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_set_macrotask_callback_set_next_tick_callback() {
|
|
#[op]
|
|
async fn op_async_sleep() -> Result<(), Error> {
|
|
// Future must be Poll::Pending on first call
|
|
tokio::time::sleep(std::time::Duration::from_millis(1)).await;
|
|
Ok(())
|
|
}
|
|
|
|
let extension = Extension::builder()
|
|
.ops(vec![op_async_sleep::decl()])
|
|
.build();
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![extension],
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"macrotasks_and_nextticks.js",
|
|
r#"
|
|
(async function () {
|
|
const results = [];
|
|
Deno.core.opSync("op_set_macrotask_callback", () => {
|
|
results.push("macrotask");
|
|
return true;
|
|
});
|
|
Deno.core.opSync("op_set_next_tick_callback", () => {
|
|
results.push("nextTick");
|
|
Deno.core.opSync("op_set_has_tick_scheduled", false);
|
|
});
|
|
|
|
Deno.core.opSync("op_set_has_tick_scheduled", true);
|
|
await Deno.core.opAsync('op_async_sleep');
|
|
if (results[0] != "nextTick") {
|
|
throw new Error(`expected nextTick, got: ${results[0]}`);
|
|
}
|
|
if (results[1] != "macrotask") {
|
|
throw new Error(`expected macrotask, got: ${results[1]}`);
|
|
}
|
|
})();
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
runtime.run_event_loop(false).await.unwrap();
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_set_macrotask_callback_set_next_tick_callback_multiple() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
|
|
runtime
|
|
.execute_script(
|
|
"multiple_macrotasks_and_nextticks.js",
|
|
r#"
|
|
Deno.core.opSync("op_set_macrotask_callback", () => { return true; });
|
|
Deno.core.opSync("op_set_macrotask_callback", () => { return true; });
|
|
Deno.core.opSync("op_set_next_tick_callback", () => {});
|
|
Deno.core.opSync("op_set_next_tick_callback", () => {});
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
let isolate = runtime.v8_isolate();
|
|
let state_rc = JsRuntime::state(isolate);
|
|
let state = state_rc.borrow();
|
|
assert_eq!(state.js_macrotask_cbs.len(), 2);
|
|
assert_eq!(state.js_nexttick_cbs.len(), 2);
|
|
}
|
|
|
|
#[test]
|
|
fn test_has_tick_scheduled() {
|
|
use futures::task::ArcWake;
|
|
|
|
static MACROTASK: AtomicUsize = AtomicUsize::new(0);
|
|
static NEXT_TICK: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
#[op]
|
|
fn op_macrotask() -> Result<(), AnyError> {
|
|
MACROTASK.fetch_add(1, Ordering::Relaxed);
|
|
Ok(())
|
|
}
|
|
|
|
#[op]
|
|
fn op_next_tick() -> Result<(), AnyError> {
|
|
NEXT_TICK.fetch_add(1, Ordering::Relaxed);
|
|
Ok(())
|
|
}
|
|
|
|
let extension = Extension::builder()
|
|
.ops(vec![op_macrotask::decl(), op_next_tick::decl()])
|
|
.build();
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![extension],
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"has_tick_scheduled.js",
|
|
r#"
|
|
Deno.core.opSync("op_set_macrotask_callback", () => {
|
|
Deno.core.opSync("op_macrotask");
|
|
return true; // We're done.
|
|
});
|
|
Deno.core.opSync("op_set_next_tick_callback", () => Deno.core.opSync("op_next_tick"));
|
|
Deno.core.opSync("op_set_has_tick_scheduled", true);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
|
|
struct ArcWakeImpl(Arc<AtomicUsize>);
|
|
impl ArcWake for ArcWakeImpl {
|
|
fn wake_by_ref(arc_self: &Arc<Self>) {
|
|
arc_self.0.fetch_add(1, Ordering::Relaxed);
|
|
}
|
|
}
|
|
|
|
let awoken_times = Arc::new(AtomicUsize::new(0));
|
|
let waker =
|
|
futures::task::waker(Arc::new(ArcWakeImpl(awoken_times.clone())));
|
|
let cx = &mut Context::from_waker(&waker);
|
|
|
|
assert!(matches!(runtime.poll_event_loop(cx, false), Poll::Pending));
|
|
assert_eq!(1, MACROTASK.load(Ordering::Relaxed));
|
|
assert_eq!(1, NEXT_TICK.load(Ordering::Relaxed));
|
|
assert_eq!(awoken_times.swap(0, Ordering::Relaxed), 1);
|
|
assert!(matches!(runtime.poll_event_loop(cx, false), Poll::Pending));
|
|
assert_eq!(awoken_times.swap(0, Ordering::Relaxed), 1);
|
|
assert!(matches!(runtime.poll_event_loop(cx, false), Poll::Pending));
|
|
assert_eq!(awoken_times.swap(0, Ordering::Relaxed), 1);
|
|
assert!(matches!(runtime.poll_event_loop(cx, false), Poll::Pending));
|
|
assert_eq!(awoken_times.swap(0, Ordering::Relaxed), 1);
|
|
|
|
let state_rc = JsRuntime::state(runtime.v8_isolate());
|
|
state_rc.borrow_mut().has_tick_scheduled = false;
|
|
assert!(matches!(
|
|
runtime.poll_event_loop(cx, false),
|
|
Poll::Ready(Ok(()))
|
|
));
|
|
assert_eq!(awoken_times.load(Ordering::Relaxed), 0);
|
|
assert!(matches!(
|
|
runtime.poll_event_loop(cx, false),
|
|
Poll::Ready(Ok(()))
|
|
));
|
|
assert_eq!(awoken_times.load(Ordering::Relaxed), 0);
|
|
}
|
|
|
|
#[test]
|
|
fn terminate_during_module_eval() {
|
|
#[derive(Default)]
|
|
struct ModsLoader;
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, Error> {
|
|
assert_eq!(specifier, "file:///main.js");
|
|
assert_eq!(referrer, ".");
|
|
let s = crate::resolve_import(specifier, referrer).unwrap();
|
|
Ok(s)
|
|
}
|
|
|
|
fn load(
|
|
&self,
|
|
_module_specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<ModuleSpecifier>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<ModuleSourceFuture>> {
|
|
async move {
|
|
Ok(ModuleSource {
|
|
code: b"console.log('hello world');".to_vec().into_boxed_slice(),
|
|
module_url_specified: "file:///main.js".to_string(),
|
|
module_url_found: "file:///main.js".to_string(),
|
|
module_type: ModuleType::JavaScript,
|
|
})
|
|
}
|
|
.boxed_local()
|
|
}
|
|
}
|
|
|
|
let loader = std::rc::Rc::new(ModsLoader::default());
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
module_loader: Some(loader),
|
|
..Default::default()
|
|
});
|
|
|
|
let specifier = crate::resolve_url("file:///main.js").unwrap();
|
|
let source_code = "Deno.core.print('hello\\n')".to_string();
|
|
|
|
let module_id = futures::executor::block_on(
|
|
runtime.load_main_module(&specifier, Some(source_code)),
|
|
)
|
|
.unwrap();
|
|
|
|
runtime.v8_isolate().terminate_execution();
|
|
|
|
let mod_result =
|
|
futures::executor::block_on(runtime.mod_evaluate(module_id)).unwrap();
|
|
assert!(mod_result
|
|
.unwrap_err()
|
|
.to_string()
|
|
.contains("JavaScript execution has been terminated"));
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_set_promise_reject_callback() {
|
|
static PROMISE_REJECT: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
#[op]
|
|
fn op_promise_reject() -> Result<(), AnyError> {
|
|
PROMISE_REJECT.fetch_add(1, Ordering::Relaxed);
|
|
Ok(())
|
|
}
|
|
|
|
let extension = Extension::builder()
|
|
.ops(vec![op_promise_reject::decl()])
|
|
.build();
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![extension],
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"promise_reject_callback.js",
|
|
r#"
|
|
// Note: |promise| is not the promise created below, it's a child.
|
|
Deno.core.opSync("op_set_promise_reject_callback", (type, promise, reason) => {
|
|
if (type !== /* PromiseRejectWithNoHandler */ 0) {
|
|
throw Error("unexpected type: " + type);
|
|
}
|
|
if (reason.message !== "reject") {
|
|
throw Error("unexpected reason: " + reason);
|
|
}
|
|
Deno.core.opSync("op_store_pending_promise_exception", promise);
|
|
Deno.core.opSync("op_promise_reject");
|
|
});
|
|
|
|
new Promise((_, reject) => reject(Error("reject")));
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
runtime.run_event_loop(false).await.unwrap_err();
|
|
|
|
assert_eq!(1, PROMISE_REJECT.load(Ordering::Relaxed));
|
|
|
|
runtime
|
|
.execute_script(
|
|
"promise_reject_callback.js",
|
|
r#"
|
|
{
|
|
const prev = Deno.core.opSync("op_set_promise_reject_callback", (...args) => {
|
|
prev(...args);
|
|
});
|
|
}
|
|
|
|
new Promise((_, reject) => reject(Error("reject")));
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
runtime.run_event_loop(false).await.unwrap_err();
|
|
|
|
assert_eq!(2, PROMISE_REJECT.load(Ordering::Relaxed));
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_set_promise_reject_callback_top_level_await() {
|
|
static PROMISE_REJECT: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
#[op]
|
|
fn op_promise_reject() -> Result<(), AnyError> {
|
|
PROMISE_REJECT.fetch_add(1, Ordering::Relaxed);
|
|
Ok(())
|
|
}
|
|
|
|
let extension = Extension::builder()
|
|
.ops(vec![op_promise_reject::decl()])
|
|
.build();
|
|
|
|
#[derive(Default)]
|
|
struct ModsLoader;
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, Error> {
|
|
assert_eq!(specifier, "file:///main.js");
|
|
assert_eq!(referrer, ".");
|
|
let s = crate::resolve_import(specifier, referrer).unwrap();
|
|
Ok(s)
|
|
}
|
|
|
|
fn load(
|
|
&self,
|
|
_module_specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<ModuleSpecifier>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<ModuleSourceFuture>> {
|
|
let source = r#"
|
|
Deno.core.opSync("op_set_promise_reject_callback", (type, promise, reason) => {
|
|
Deno.core.opSync("op_promise_reject");
|
|
});
|
|
|
|
throw new Error('top level throw');
|
|
"#;
|
|
|
|
async move {
|
|
Ok(ModuleSource {
|
|
code: source.as_bytes().to_vec().into_boxed_slice(),
|
|
module_url_specified: "file:///main.js".to_string(),
|
|
module_url_found: "file:///main.js".to_string(),
|
|
module_type: ModuleType::JavaScript,
|
|
})
|
|
}
|
|
.boxed_local()
|
|
}
|
|
}
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![extension],
|
|
module_loader: Some(Rc::new(ModsLoader)),
|
|
..Default::default()
|
|
});
|
|
|
|
let id = runtime
|
|
.load_main_module(&crate::resolve_url("file:///main.js").unwrap(), None)
|
|
.await
|
|
.unwrap();
|
|
let receiver = runtime.mod_evaluate(id);
|
|
runtime.run_event_loop(false).await.unwrap();
|
|
receiver.await.unwrap().unwrap_err();
|
|
|
|
assert_eq!(1, PROMISE_REJECT.load(Ordering::Relaxed));
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_return_serde_v8_error() {
|
|
#[op]
|
|
fn op_err() -> Result<std::collections::BTreeMap<u64, u64>, anyhow::Error> {
|
|
Ok([(1, 2), (3, 4)].into_iter().collect()) // Maps can't have non-string keys in serde_v8
|
|
}
|
|
|
|
let ext = Extension::builder().ops(vec![op_err::decl()]).build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
..Default::default()
|
|
});
|
|
assert!(runtime
|
|
.execute_script(
|
|
"test_op_return_serde_v8_error.js",
|
|
"Deno.core.opSync('op_err')"
|
|
)
|
|
.is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_high_arity() {
|
|
#[op]
|
|
fn op_add_4(
|
|
x1: i64,
|
|
x2: i64,
|
|
x3: i64,
|
|
x4: i64,
|
|
) -> Result<i64, anyhow::Error> {
|
|
Ok(x1 + x2 + x3 + x4)
|
|
}
|
|
|
|
let ext = Extension::builder().ops(vec![op_add_4::decl()]).build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
..Default::default()
|
|
});
|
|
let r = runtime
|
|
.execute_script("test.js", "Deno.core.opSync('op_add_4', 1, 2, 3, 4)")
|
|
.unwrap();
|
|
let scope = &mut runtime.handle_scope();
|
|
assert_eq!(r.open(scope).integer_value(scope), Some(10));
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_disabled() {
|
|
#[op]
|
|
fn op_foo() -> Result<i64, anyhow::Error> {
|
|
Ok(42)
|
|
}
|
|
|
|
let ext = Extension::builder()
|
|
.ops(vec![op_foo::decl().disable()])
|
|
.build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
..Default::default()
|
|
});
|
|
let r = runtime
|
|
.execute_script("test.js", "Deno.core.opSync('op_foo')")
|
|
.unwrap();
|
|
let scope = &mut runtime.handle_scope();
|
|
assert!(r.open(scope).is_undefined());
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_detached_buffer() {
|
|
use serde_v8::DetachedBuffer;
|
|
|
|
#[op]
|
|
fn op_sum_take(b: DetachedBuffer) -> Result<u64, anyhow::Error> {
|
|
Ok(b.as_ref().iter().clone().map(|x| *x as u64).sum())
|
|
}
|
|
|
|
#[op]
|
|
fn op_boomerang(
|
|
b: DetachedBuffer,
|
|
) -> Result<DetachedBuffer, anyhow::Error> {
|
|
Ok(b)
|
|
}
|
|
|
|
let ext = Extension::builder()
|
|
.ops(vec![op_sum_take::decl(), op_boomerang::decl()])
|
|
.build();
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
..Default::default()
|
|
});
|
|
|
|
runtime
|
|
.execute_script(
|
|
"test.js",
|
|
r#"
|
|
const a1 = new Uint8Array([1,2,3]);
|
|
const a1b = a1.subarray(0, 3);
|
|
const a2 = new Uint8Array([5,10,15]);
|
|
const a2b = a2.subarray(0, 3);
|
|
|
|
|
|
if (!(a1.length > 0 && a1b.length > 0)) {
|
|
throw new Error("a1 & a1b should have a length");
|
|
}
|
|
let sum = Deno.core.opSync('op_sum_take', a1b);
|
|
if (sum !== 6) {
|
|
throw new Error(`Bad sum: ${sum}`);
|
|
}
|
|
if (a1.length > 0 || a1b.length > 0) {
|
|
throw new Error("expecting a1 & a1b to be detached");
|
|
}
|
|
|
|
const a3 = Deno.core.opSync('op_boomerang', a2b);
|
|
if (a3.byteLength != 3) {
|
|
throw new Error(`Expected a3.byteLength === 3, got ${a3.byteLength}`);
|
|
}
|
|
if (a3[0] !== 5 || a3[1] !== 10) {
|
|
throw new Error(`Invalid a3: ${a3[0]}, ${a3[1]}`);
|
|
}
|
|
if (a2.byteLength > 0 || a2b.byteLength > 0) {
|
|
throw new Error("expecting a2 & a2b to be detached, a3 re-attached");
|
|
}
|
|
|
|
const wmem = new WebAssembly.Memory({ initial: 1, maximum: 2 });
|
|
const w32 = new Uint32Array(wmem.buffer);
|
|
w32[0] = 1; w32[1] = 2; w32[2] = 3;
|
|
const assertWasmThrow = (() => {
|
|
try {
|
|
let sum = Deno.core.opSync('op_sum_take', w32.subarray(0, 2));
|
|
return false;
|
|
} catch(e) {
|
|
return e.message.includes('ExpectedDetachable');
|
|
}
|
|
});
|
|
if (!assertWasmThrow()) {
|
|
throw new Error("expected wasm mem to not be detachable");
|
|
}
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_op_unstable_disabling() {
|
|
#[op]
|
|
fn op_foo() -> Result<i64, anyhow::Error> {
|
|
Ok(42)
|
|
}
|
|
|
|
#[op(unstable)]
|
|
fn op_bar() -> Result<i64, anyhow::Error> {
|
|
Ok(42)
|
|
}
|
|
|
|
let ext = Extension::builder()
|
|
.ops(vec![op_foo::decl(), op_bar::decl()])
|
|
.middleware(|op| if op.is_unstable { op.disable() } else { op })
|
|
.build();
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![ext],
|
|
..Default::default()
|
|
});
|
|
runtime
|
|
.execute_script(
|
|
"test.js",
|
|
r#"
|
|
if (Deno.core.opSync('op_foo') !== 42) {
|
|
throw new Error("Exptected op_foo() === 42");
|
|
}
|
|
if (Deno.core.opSync('op_bar') !== undefined) {
|
|
throw new Error("Expected op_bar to be disabled")
|
|
}
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn js_realm_simple() {
|
|
let mut runtime = JsRuntime::new(Default::default());
|
|
let main_context = runtime.global_context();
|
|
let main_global = {
|
|
let scope = &mut runtime.handle_scope();
|
|
let local_global = main_context.open(scope).global(scope);
|
|
v8::Global::new(scope, local_global)
|
|
};
|
|
|
|
let realm = runtime.create_realm().unwrap();
|
|
assert_ne!(realm.context(), &main_context);
|
|
assert_ne!(realm.global_object(runtime.v8_isolate()), main_global);
|
|
|
|
let main_object = runtime.execute_script("", "Object").unwrap();
|
|
let realm_object = realm
|
|
.execute_script(runtime.v8_isolate(), "", "Object")
|
|
.unwrap();
|
|
assert_ne!(main_object, realm_object);
|
|
}
|
|
|
|
#[test]
|
|
fn js_realm_init() {
|
|
#[op]
|
|
fn op_test() -> Result<String, Error> {
|
|
Ok(String::from("Test"))
|
|
}
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![Extension::builder().ops(vec![op_test::decl()]).build()],
|
|
..Default::default()
|
|
});
|
|
let realm = runtime.create_realm().unwrap();
|
|
let ret = realm
|
|
.execute_script(runtime.v8_isolate(), "", "Deno.core.opSync('op_test')")
|
|
.unwrap();
|
|
|
|
let scope = &mut realm.handle_scope(runtime.v8_isolate());
|
|
assert_eq!(ret, serde_v8::to_v8(scope, "Test").unwrap());
|
|
}
|
|
|
|
#[test]
|
|
fn js_realm_init_snapshot() {
|
|
let snapshot = {
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
will_snapshot: true,
|
|
..Default::default()
|
|
});
|
|
let snap: &[u8] = &*runtime.snapshot();
|
|
Vec::from(snap).into_boxed_slice()
|
|
};
|
|
|
|
#[op]
|
|
fn op_test() -> Result<String, Error> {
|
|
Ok(String::from("Test"))
|
|
}
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
startup_snapshot: Some(Snapshot::Boxed(snapshot)),
|
|
extensions: vec![Extension::builder().ops(vec![op_test::decl()]).build()],
|
|
..Default::default()
|
|
});
|
|
let realm = runtime.create_realm().unwrap();
|
|
let ret = realm
|
|
.execute_script(runtime.v8_isolate(), "", "Deno.core.opSync('op_test')")
|
|
.unwrap();
|
|
|
|
let scope = &mut realm.handle_scope(runtime.v8_isolate());
|
|
assert_eq!(ret, serde_v8::to_v8(scope, "Test").unwrap());
|
|
}
|
|
|
|
#[test]
|
|
fn js_realm_sync_ops() {
|
|
// Test that returning a ZeroCopyBuf and throwing an exception from a sync
|
|
// op result in objects with prototypes from the right realm. Note that we
|
|
// don't test the result of returning structs, because they will be
|
|
// serialized to objects with null prototype.
|
|
|
|
#[op]
|
|
fn op_test(fail: bool) -> Result<ZeroCopyBuf, Error> {
|
|
if !fail {
|
|
Ok(ZeroCopyBuf::empty())
|
|
} else {
|
|
Err(crate::error::type_error("Test"))
|
|
}
|
|
}
|
|
|
|
let mut runtime = JsRuntime::new(RuntimeOptions {
|
|
extensions: vec![Extension::builder().ops(vec![op_test::decl()]).build()],
|
|
get_error_class_fn: Some(&|error| {
|
|
crate::error::get_custom_error_class(error).unwrap()
|
|
}),
|
|
..Default::default()
|
|
});
|
|
let new_realm = runtime.create_realm().unwrap();
|
|
|
|
// Test in both realms
|
|
for realm in [runtime.global_realm(), new_realm].into_iter() {
|
|
let ret = realm
|
|
.execute_script(
|
|
runtime.v8_isolate(),
|
|
"",
|
|
r#"
|
|
const buf = Deno.core.opSync("op_test", false);
|
|
let err;
|
|
try {
|
|
Deno.core.opSync("op_test", true);
|
|
} catch(e) {
|
|
err = e;
|
|
}
|
|
buf instanceof Uint8Array && buf.byteLength === 0 &&
|
|
err instanceof TypeError && err.message === "Test"
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert!(ret.open(runtime.v8_isolate()).is_true());
|
|
}
|
|
}
|
|
}
|