mirror of
https://github.com/denoland/deno.git
synced 2024-11-22 15:06:54 -05:00
f57a2c1e85
deno_core/ - rename core_isolate.rs to runtime.rs - rename CoreIsolate to JsRuntime - rename JSError to JsError - rename JSStackFrame to JsStackFrame cli/ - update references from deno_core::CoreIsolate to deno_core::JsRuntime - rename deno_core::JSError to deno_core::JsError - rename fmt_errors::JSError to fmt_errors::JsError
2268 lines
69 KiB
Rust
2268 lines
69 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use rusty_v8 as v8;
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use crate::bindings;
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use crate::errors::attach_handle_to_error;
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use crate::errors::ErrWithV8Handle;
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use crate::futures::FutureExt;
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use crate::module_specifier::ModuleSpecifier;
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use crate::modules::LoadState;
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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::ModuleSource;
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use crate::modules::Modules;
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use crate::modules::NoopModuleLoader;
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use crate::modules::PrepareLoadFuture;
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use crate::modules::RecursiveModuleLoad;
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use crate::ops::*;
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use crate::shared_queue::SharedQueue;
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use crate::shared_queue::RECOMMENDED_SIZE;
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use crate::ErrBox;
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use crate::JsError;
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use crate::OpRouter;
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use futures::stream::FuturesUnordered;
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use futures::stream::StreamExt;
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use futures::stream::StreamFuture;
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use futures::task::AtomicWaker;
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use futures::Future;
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use std::any::Any;
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use std::cell::Cell;
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use std::cell::RefCell;
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use std::collections::HashMap;
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use std::convert::From;
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use std::convert::TryFrom;
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use std::ffi::c_void;
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use std::mem::forget;
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use std::ops::Deref;
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use std::ops::DerefMut;
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use std::option::Option;
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use std::pin::Pin;
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use std::rc::Rc;
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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 = Pin<Box<dyn Future<Output = (OpId, Box<[u8]>)>>>;
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/// Stores a script used to initialize a Isolate
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pub struct Script<'a> {
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pub source: &'a str,
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pub filename: &'a str,
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}
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// TODO(ry) It's ugly that we have both Script and OwnedScript. Ideally we
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// wouldn't expose such twiddly complexity.
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struct OwnedScript {
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pub source: String,
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pub filename: String,
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}
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impl From<Script<'_>> for OwnedScript {
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fn from(s: Script) -> OwnedScript {
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OwnedScript {
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source: s.source.to_string(),
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filename: s.filename.to_string(),
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}
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}
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}
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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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/// Represents data used to initialize an isolate at startup, either
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/// in the form of a binary snapshot or a JavaScript source file.
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pub enum StartupData<'a> {
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Script(Script<'a>),
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Snapshot(Snapshot),
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None,
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}
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impl StartupData<'_> {
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fn into_options(self) -> (Option<OwnedScript>, Option<Snapshot>) {
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match self {
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Self::Script(script) => (Some(script.into()), None),
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Self::Snapshot(snapshot) => (None, Some(snapshot)),
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Self::None => (None, None),
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}
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}
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}
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type JsErrorCreateFn = dyn Fn(JsError) -> ErrBox;
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pub type GetErrorClassFn = dyn for<'e> Fn(&'e ErrBox) -> &'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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/// Ops are created in JavaScript by calling Deno.core.dispatch(), and in Rust
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/// by implementing dispatcher function that takes control buffer and optional zero copy buffer
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/// as arguments. An async Op corresponds exactly 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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// an safety issue with SnapshotCreator. See JsRuntime::drop.
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v8_isolate: Option<v8::OwnedIsolate>,
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snapshot_creator: Option<v8::SnapshotCreator>,
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has_snapshotted: bool,
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needs_init: bool,
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startup_script: Option<OwnedScript>,
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allocations: IsolateAllocations,
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}
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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 struct JsRuntimeState {
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pub global_context: Option<v8::Global<v8::Context>>,
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pub(crate) shared_ab: Option<v8::Global<v8::SharedArrayBuffer>>,
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pub(crate) js_recv_cb: Option<v8::Global<v8::Function>>,
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pub(crate) js_macrotask_cb: Option<v8::Global<v8::Function>>,
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pub(crate) pending_promise_exceptions: HashMap<i32, v8::Global<v8::Value>>,
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pub(crate) js_error_create_fn: Box<JsErrorCreateFn>,
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pub(crate) shared: SharedQueue,
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pub(crate) pending_ops: FuturesUnordered<PendingOpFuture>,
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pub(crate) pending_unref_ops: FuturesUnordered<PendingOpFuture>,
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pub(crate) have_unpolled_ops: Cell<bool>,
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pub(crate) op_router: Rc<dyn OpRouter>,
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loader: Rc<dyn ModuleLoader>,
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pub modules: Modules,
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pub(crate) dyn_import_map:
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HashMap<ModuleLoadId, v8::Global<v8::PromiseResolver>>,
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preparing_dyn_imports: FuturesUnordered<Pin<Box<PrepareLoadFuture>>>,
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pending_dyn_imports: FuturesUnordered<StreamFuture<RecursiveModuleLoad>>,
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waker: AtomicWaker,
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}
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impl Deref for JsRuntime {
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type Target = v8::Isolate;
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fn deref(&self) -> &v8::Isolate {
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self.v8_isolate.as_ref().unwrap()
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}
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}
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impl DerefMut for JsRuntime {
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fn deref_mut(&mut self) -> &mut v8::Isolate {
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self.v8_isolate.as_mut().unwrap()
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}
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}
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impl Drop for JsRuntime {
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fn drop(&mut self) {
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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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#[allow(clippy::missing_safety_doc)]
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pub unsafe fn v8_init() {
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let platform = v8::new_default_platform().unwrap();
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v8::V8::initialize_platform(platform);
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v8::V8::initialize();
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// TODO(ry) This makes WASM compile synchronously. Eventually we should
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// remove this to make it work asynchronously too. But that requires getting
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// PumpMessageLoop and RunMicrotasks setup correctly.
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// See https://github.com/denoland/deno/issues/2544
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let argv = vec![
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"".to_string(),
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"--wasm-test-streaming".to_string(),
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"--no-wasm-async-compilation".to_string(),
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"--harmony-top-level-await".to_string(),
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"--experimental-wasm-bigint".to_string(),
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];
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v8::V8::set_flags_from_command_line(argv);
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}
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/// Minimum and maximum bytes of heap used in an isolate
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pub struct HeapLimits {
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/// By default V8 starts with a small heap and dynamically grows it to match
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/// the set of live objects. This may lead to ineffective garbage collections
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/// at startup if the live set is large. Setting the initial heap size avoids
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/// such garbage collections. Note that this does not affect young generation
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/// garbage collections.
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pub initial: usize,
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/// When the heap size approaches `max`, V8 will perform series of
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/// garbage collections and invoke the
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/// [NearHeapLimitCallback](TODO).
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/// If the garbage collections do not help and the callback does not
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/// increase the limit, then V8 will crash with V8::FatalProcessOutOfMemory.
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pub max: usize,
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}
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pub(crate) struct IsolateOptions {
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loader: Rc<dyn ModuleLoader>,
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op_router: Rc<dyn OpRouter>,
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startup_script: Option<OwnedScript>,
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startup_snapshot: Option<Snapshot>,
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will_snapshot: bool,
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heap_limits: Option<HeapLimits>,
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}
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impl JsRuntime {
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/// startup_data defines the snapshot or script used at startup to initialize
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/// the isolate.
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pub fn new(
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op_router: Rc<dyn OpRouter>,
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startup_data: StartupData,
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will_snapshot: bool,
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) -> Self {
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let (startup_script, startup_snapshot) = startup_data.into_options();
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let options = IsolateOptions {
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loader: Rc::new(NoopModuleLoader),
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op_router,
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startup_script,
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startup_snapshot,
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will_snapshot,
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heap_limits: None,
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};
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Self::from_options(options)
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}
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// TODO(bartlomieju): add `new_with_loader_and_heap_limits` function?
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/// Create new isolate that can load and execute ESModules.
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pub fn new_with_loader(
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loader: Rc<dyn ModuleLoader>,
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op_router: Rc<dyn OpRouter>,
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startup_data: StartupData,
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will_snapshot: bool,
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) -> Self {
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let (startup_script, startup_snapshot) = startup_data.into_options();
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let options = IsolateOptions {
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loader,
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op_router,
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startup_script,
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startup_snapshot,
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will_snapshot,
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heap_limits: None,
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};
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Self::from_options(options)
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}
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/// This is useful for controlling memory usage of scripts.
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///
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/// See [`HeapLimits`](struct.HeapLimits.html) for more details.
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///
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/// Make sure to use [`add_near_heap_limit_callback`](#method.add_near_heap_limit_callback)
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/// to prevent v8 from crashing when reaching the upper limit.
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pub fn with_heap_limits(
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op_router: Rc<dyn OpRouter>,
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startup_data: StartupData,
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heap_limits: HeapLimits,
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) -> Self {
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let (startup_script, startup_snapshot) = startup_data.into_options();
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let options = IsolateOptions {
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loader: Rc::new(NoopModuleLoader),
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op_router,
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startup_script,
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startup_snapshot,
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will_snapshot: false,
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heap_limits: Some(heap_limits),
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};
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Self::from_options(options)
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}
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fn from_options(options: IsolateOptions) -> Self {
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static DENO_INIT: Once = Once::new();
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DENO_INIT.call_once(|| {
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unsafe { v8_init() };
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});
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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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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);
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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 = 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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if let Some(heap_limits) = options.heap_limits {
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params = params.heap_limits(heap_limits.initial, heap_limits.max)
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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 = if snapshot_loaded {
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v8::Context::new(scope)
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} else {
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// If no snapshot is provided, we initialize the context with empty
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// main source code and source maps.
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bindings::initialize_context(scope)
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};
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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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isolate.set_slot(Rc::new(RefCell::new(JsRuntimeState {
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global_context: Some(global_context),
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pending_promise_exceptions: HashMap::new(),
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shared_ab: None,
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js_recv_cb: None,
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js_macrotask_cb: None,
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js_error_create_fn: Box::new(JsError::create),
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shared: SharedQueue::new(RECOMMENDED_SIZE),
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pending_ops: FuturesUnordered::new(),
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pending_unref_ops: FuturesUnordered::new(),
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have_unpolled_ops: Cell::new(false),
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op_router: options.op_router,
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modules: Modules::new(),
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loader: options.loader,
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dyn_import_map: HashMap::new(),
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preparing_dyn_imports: FuturesUnordered::new(),
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pending_dyn_imports: FuturesUnordered::new(),
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waker: AtomicWaker::new(),
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})));
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Self {
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v8_isolate: Some(isolate),
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snapshot_creator: maybe_snapshot_creator,
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has_snapshotted: false,
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needs_init: true,
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startup_script: options.startup_script,
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allocations: IsolateAllocations::default(),
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}
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}
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fn setup_isolate(mut isolate: v8::OwnedIsolate) -> v8::OwnedIsolate {
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isolate.set_capture_stack_trace_for_uncaught_exceptions(true, 10);
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isolate.set_promise_reject_callback(bindings::promise_reject_callback);
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isolate.set_host_initialize_import_meta_object_callback(
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bindings::host_initialize_import_meta_object_callback,
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);
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isolate.set_host_import_module_dynamically_callback(
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bindings::host_import_module_dynamically_callback,
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);
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isolate
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}
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pub fn state(isolate: &v8::Isolate) -> Rc<RefCell<JsRuntimeState>> {
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let s = isolate.get_slot::<Rc<RefCell<JsRuntimeState>>>().unwrap();
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s.clone()
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}
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/// Executes a bit of built-in JavaScript to provide Deno.sharedQueue.
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pub(crate) fn shared_init(&mut self) {
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if self.needs_init {
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self.needs_init = false;
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js_check(self.execute("core.js", include_str!("core.js")));
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// Maybe execute the startup script.
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if let Some(s) = self.startup_script.take() {
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self.execute(&s.filename, &s.source).unwrap()
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}
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}
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}
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/// Executes traditional JavaScript code (traditional = not ES modules)
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///
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/// ErrBox can be downcast to a type that exposes additional information about
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/// the V8 exception. By default this type is JsError, however it may be a
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/// different type if JsRuntime::set_js_error_create_fn() has been used.
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pub fn execute(
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&mut self,
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js_filename: &str,
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js_source: &str,
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) -> Result<(), ErrBox> {
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self.shared_init();
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let state_rc = Self::state(self);
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let state = state_rc.borrow();
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let scope = &mut v8::HandleScope::with_context(
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self.v8_isolate.as_mut().unwrap(),
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state.global_context.as_ref().unwrap(),
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);
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drop(state);
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let source = v8::String::new(scope, js_source).unwrap();
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let name = v8::String::new(scope, js_filename).unwrap();
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let origin = bindings::script_origin(scope, name);
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let tc_scope = &mut v8::TryCatch::new(scope);
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let script = match v8::Script::compile(tc_scope, source, Some(&origin)) {
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Some(script) => script,
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None => {
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let exception = tc_scope.exception().unwrap();
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return exception_to_err_result(tc_scope, exception);
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}
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};
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match script.run(tc_scope) {
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Some(_) => Ok(()),
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None => {
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assert!(tc_scope.has_caught());
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let exception = tc_scope.exception().unwrap();
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exception_to_err_result(tc_scope, exception)
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}
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}
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}
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/// Takes a snapshot. The isolate should have been created with will_snapshot
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/// set to true.
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///
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/// ErrBox can be downcast to a type that exposes additional information about
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/// the V8 exception. By default this type is JsError, however it may be a
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/// different type if JsRuntime::set_js_error_create_fn() has been used.
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pub fn snapshot(&mut self) -> v8::StartupData {
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assert!(self.snapshot_creator.is_some());
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let state = Self::state(self);
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// Note: create_blob() method must not be called from within a HandleScope.
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// TODO(piscisaureus): The rusty_v8 type system should enforce this.
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state.borrow_mut().global_context.take();
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std::mem::take(&mut state.borrow_mut().modules);
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let snapshot_creator = self.snapshot_creator.as_mut().unwrap();
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let snapshot = snapshot_creator
|
|
.create_blob(v8::FunctionCodeHandling::Keep)
|
|
.unwrap();
|
|
self.has_snapshotted = true;
|
|
|
|
snapshot
|
|
}
|
|
|
|
/// 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
|
|
.as_mut()
|
|
.unwrap()
|
|
.remove_near_heap_limit_callback(prev_cb, 0);
|
|
}
|
|
|
|
self
|
|
.v8_isolate
|
|
.as_mut()
|
|
.unwrap()
|
|
.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
|
|
.as_mut()
|
|
.unwrap()
|
|
.remove_near_heap_limit_callback(cb, heap_limit);
|
|
}
|
|
}
|
|
}
|
|
|
|
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,
|
|
{
|
|
let callback = unsafe { &mut *(data as *mut F) };
|
|
callback(current_heap_limit, initial_heap_limit)
|
|
}
|
|
|
|
impl Future for JsRuntime {
|
|
type Output = Result<(), ErrBox>;
|
|
|
|
fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
|
|
let runtime = self.get_mut();
|
|
runtime.shared_init();
|
|
|
|
let state_rc = Self::state(runtime);
|
|
{
|
|
let state = state_rc.borrow();
|
|
state.waker.register(cx.waker());
|
|
}
|
|
|
|
let has_preparing = {
|
|
let state = state_rc.borrow();
|
|
!state.preparing_dyn_imports.is_empty()
|
|
};
|
|
if has_preparing {
|
|
let poll_imports = runtime.prepare_dyn_imports(cx)?;
|
|
assert!(poll_imports.is_ready());
|
|
}
|
|
|
|
let has_pending = {
|
|
let state = state_rc.borrow();
|
|
!state.pending_dyn_imports.is_empty()
|
|
};
|
|
if has_pending {
|
|
let poll_imports = runtime.poll_dyn_imports(cx)?;
|
|
assert!(poll_imports.is_ready());
|
|
}
|
|
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **runtime,
|
|
state_rc.borrow().global_context.as_ref().unwrap(),
|
|
);
|
|
|
|
check_promise_exceptions(scope)?;
|
|
|
|
let mut overflow_response: Option<(OpId, Box<[u8]>)> = None;
|
|
|
|
loop {
|
|
let mut state = state_rc.borrow_mut();
|
|
// Now handle actual ops.
|
|
state.have_unpolled_ops.set(false);
|
|
|
|
let pending_r = state.pending_ops.poll_next_unpin(cx);
|
|
match pending_r {
|
|
Poll::Ready(None) => break,
|
|
Poll::Pending => break,
|
|
Poll::Ready(Some((op_id, buf))) => {
|
|
let successful_push = state.shared.push(op_id, &buf);
|
|
if !successful_push {
|
|
// If we couldn't push the response to the shared queue, because
|
|
// there wasn't enough size, we will return the buffer via the
|
|
// legacy route, using the argument of deno_respond.
|
|
overflow_response = Some((op_id, buf));
|
|
break;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
loop {
|
|
let mut state = state_rc.borrow_mut();
|
|
let unref_r = state.pending_unref_ops.poll_next_unpin(cx);
|
|
#[allow(clippy::match_wild_err_arm)]
|
|
match unref_r {
|
|
Poll::Ready(None) => break,
|
|
Poll::Pending => break,
|
|
Poll::Ready(Some((op_id, buf))) => {
|
|
let successful_push = state.shared.push(op_id, &buf);
|
|
if !successful_push {
|
|
// If we couldn't push the response to the shared queue, because
|
|
// there wasn't enough size, we will return the buffer via the
|
|
// legacy route, using the argument of deno_respond.
|
|
overflow_response = Some((op_id, buf));
|
|
break;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
{
|
|
let state = state_rc.borrow();
|
|
if state.shared.size() > 0 {
|
|
drop(state);
|
|
async_op_response(scope, None)?;
|
|
// The other side should have shifted off all the messages.
|
|
let state = state_rc.borrow();
|
|
assert_eq!(state.shared.size(), 0);
|
|
}
|
|
}
|
|
|
|
{
|
|
if let Some((op_id, buf)) = overflow_response.take() {
|
|
async_op_response(scope, Some((op_id, buf)))?;
|
|
}
|
|
|
|
drain_macrotasks(scope)?;
|
|
|
|
check_promise_exceptions(scope)?;
|
|
}
|
|
|
|
let state = state_rc.borrow();
|
|
// We're idle if pending_ops is empty.
|
|
if state.pending_ops.is_empty()
|
|
&& state.pending_dyn_imports.is_empty()
|
|
&& state.preparing_dyn_imports.is_empty()
|
|
{
|
|
Poll::Ready(Ok(()))
|
|
} else {
|
|
if state.have_unpolled_ops.get() {
|
|
state.waker.wake();
|
|
}
|
|
Poll::Pending
|
|
}
|
|
}
|
|
}
|
|
|
|
impl JsRuntimeState {
|
|
/// Allows a callback to be set whenever a V8 exception is made. This allows
|
|
/// the caller to wrap the JsError into an error. By default this callback
|
|
/// is set to JsError::create.
|
|
pub fn set_js_error_create_fn(
|
|
&mut self,
|
|
f: impl Fn(JsError) -> ErrBox + 'static,
|
|
) {
|
|
self.js_error_create_fn = Box::new(f);
|
|
}
|
|
|
|
// Called by V8 during `Isolate::mod_instantiate`.
|
|
pub fn module_resolve_cb(
|
|
&mut self,
|
|
specifier: &str,
|
|
referrer_id: ModuleId,
|
|
) -> ModuleId {
|
|
let referrer = self.modules.get_name(referrer_id).unwrap();
|
|
let specifier = self
|
|
.loader
|
|
.resolve(specifier, referrer, false)
|
|
.expect("Module should have been already resolved");
|
|
self.modules.get_id(specifier.as_str()).unwrap_or(0)
|
|
}
|
|
|
|
// Called by V8 during `Isolate::mod_instantiate`.
|
|
pub fn dyn_import_cb(
|
|
&mut self,
|
|
resolver_handle: v8::Global<v8::PromiseResolver>,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
) {
|
|
debug!("dyn_import specifier {} referrer {} ", specifier, referrer);
|
|
|
|
let load = RecursiveModuleLoad::dynamic_import(
|
|
specifier,
|
|
referrer,
|
|
self.loader.clone(),
|
|
);
|
|
self.dyn_import_map.insert(load.id, resolver_handle);
|
|
self.waker.wake();
|
|
let fut = load.prepare().boxed_local();
|
|
self.preparing_dyn_imports.push(fut);
|
|
}
|
|
}
|
|
|
|
fn async_op_response<'s>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
maybe_buf: Option<(OpId, Box<[u8]>)>,
|
|
) -> Result<(), ErrBox> {
|
|
let context = scope.get_current_context();
|
|
let global: v8::Local<v8::Value> = context.global(scope).into();
|
|
let js_recv_cb = JsRuntime::state(scope)
|
|
.borrow()
|
|
.js_recv_cb
|
|
.as_ref()
|
|
.map(|cb| v8::Local::new(scope, cb))
|
|
.expect("Deno.core.recv has not been called.");
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
match maybe_buf {
|
|
Some((op_id, buf)) => {
|
|
let op_id: v8::Local<v8::Value> =
|
|
v8::Integer::new(tc_scope, op_id as i32).into();
|
|
let ui8: v8::Local<v8::Value> =
|
|
boxed_slice_to_uint8array(tc_scope, buf).into();
|
|
js_recv_cb.call(tc_scope, global, &[op_id, ui8])
|
|
}
|
|
None => js_recv_cb.call(tc_scope, global, &[]),
|
|
};
|
|
|
|
match tc_scope.exception() {
|
|
None => Ok(()),
|
|
Some(exception) => exception_to_err_result(tc_scope, exception),
|
|
}
|
|
}
|
|
|
|
fn drain_macrotasks<'s>(scope: &mut v8::HandleScope<'s>) -> Result<(), ErrBox> {
|
|
let context = scope.get_current_context();
|
|
let global: v8::Local<v8::Value> = context.global(scope).into();
|
|
|
|
let js_macrotask_cb = match JsRuntime::state(scope)
|
|
.borrow_mut()
|
|
.js_macrotask_cb
|
|
.as_ref()
|
|
{
|
|
Some(cb) => v8::Local::new(scope, cb),
|
|
None => return Ok(()),
|
|
};
|
|
|
|
// 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);
|
|
|
|
loop {
|
|
let is_done = js_macrotask_cb.call(tc_scope, global, &[]);
|
|
|
|
if let Some(exception) = tc_scope.exception() {
|
|
return exception_to_err_result(tc_scope, exception);
|
|
}
|
|
|
|
let is_done = is_done.unwrap();
|
|
if is_done.is_true() {
|
|
break;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub(crate) fn exception_to_err_result<'s, T>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
exception: v8::Local<v8::Value>,
|
|
) -> Result<T, ErrBox> {
|
|
// TODO(piscisaureus): in rusty_v8, `is_execution_terminating()` should
|
|
// also be implemented on `struct Isolate`.
|
|
let is_terminating_exception =
|
|
scope.thread_safe_handle().is_execution_terminating();
|
|
let mut exception = exception;
|
|
|
|
if is_terminating_exception {
|
|
// TerminateExecution was called. Cancel exception termination so that the
|
|
// exception can be created..
|
|
// TODO(piscisaureus): in rusty_v8, `cancel_terminate_execution()` should
|
|
// also be implemented on `struct Isolate`.
|
|
scope.thread_safe_handle().cancel_terminate_execution();
|
|
|
|
// Maybe make a new exception object.
|
|
if exception.is_null_or_undefined() {
|
|
let message = v8::String::new(scope, "execution terminated").unwrap();
|
|
exception = v8::Exception::error(scope, message);
|
|
}
|
|
}
|
|
|
|
let js_error = JsError::from_v8_exception(scope, exception);
|
|
|
|
let state_rc = JsRuntime::state(scope);
|
|
let state = state_rc.borrow();
|
|
let js_error = (state.js_error_create_fn)(js_error);
|
|
|
|
if is_terminating_exception {
|
|
// Re-enable exception termination.
|
|
// TODO(piscisaureus): in rusty_v8, `terminate_execution()` should also
|
|
// be implemented on `struct Isolate`.
|
|
scope.thread_safe_handle().terminate_execution();
|
|
}
|
|
|
|
Err(js_error)
|
|
}
|
|
|
|
fn check_promise_exceptions<'s>(
|
|
scope: &mut v8::HandleScope<'s>,
|
|
) -> Result<(), ErrBox> {
|
|
let state_rc = JsRuntime::state(scope);
|
|
let mut state = state_rc.borrow_mut();
|
|
|
|
if let Some(&key) = state.pending_promise_exceptions.keys().next() {
|
|
let handle = state.pending_promise_exceptions.remove(&key).unwrap();
|
|
drop(state);
|
|
let exception = v8::Local::new(scope, handle);
|
|
exception_to_err_result(scope, exception)
|
|
} else {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
pub fn js_check<T>(r: Result<T, ErrBox>) -> T {
|
|
if let Err(e) = r {
|
|
panic!(e.to_string());
|
|
}
|
|
r.unwrap()
|
|
}
|
|
|
|
fn boxed_slice_to_uint8array<'sc>(
|
|
scope: &mut v8::HandleScope<'sc>,
|
|
buf: Box<[u8]>,
|
|
) -> v8::Local<'sc, v8::Uint8Array> {
|
|
assert!(!buf.is_empty());
|
|
let buf_len = buf.len();
|
|
let backing_store = v8::ArrayBuffer::new_backing_store_from_boxed_slice(buf);
|
|
let backing_store_shared = backing_store.make_shared();
|
|
let ab = v8::ArrayBuffer::with_backing_store(scope, &backing_store_shared);
|
|
v8::Uint8Array::new(scope, ab, 0, buf_len)
|
|
.expect("Failed to create UintArray8")
|
|
}
|
|
|
|
// Related to module loading
|
|
impl JsRuntime {
|
|
/// Low-level module creation.
|
|
///
|
|
/// Called during module loading or dynamic import loading.
|
|
fn mod_new(
|
|
&mut self,
|
|
main: bool,
|
|
name: &str,
|
|
source: &str,
|
|
) -> Result<ModuleId, ErrBox> {
|
|
let state_rc = Self::state(self);
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **self,
|
|
state_rc.borrow().global_context.as_ref().unwrap(),
|
|
);
|
|
|
|
let name_str = v8::String::new(scope, name).unwrap();
|
|
let source_str = v8::String::new(scope, source).unwrap();
|
|
|
|
let origin = bindings::module_origin(scope, name_str);
|
|
let source = v8::script_compiler::Source::new(source_str, &origin);
|
|
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
let maybe_module = v8::script_compiler::compile_module(tc_scope, source);
|
|
|
|
if tc_scope.has_caught() {
|
|
assert!(maybe_module.is_none());
|
|
let e = tc_scope.exception().unwrap();
|
|
return exception_to_err_result(tc_scope, e);
|
|
}
|
|
|
|
let module = maybe_module.unwrap();
|
|
let id = module.get_identity_hash();
|
|
|
|
let mut import_specifiers: Vec<ModuleSpecifier> = vec![];
|
|
for i in 0..module.get_module_requests_length() {
|
|
let import_specifier =
|
|
module.get_module_request(i).to_rust_string_lossy(tc_scope);
|
|
let state = state_rc.borrow();
|
|
let module_specifier =
|
|
state.loader.resolve(&import_specifier, name, false)?;
|
|
import_specifiers.push(module_specifier);
|
|
}
|
|
|
|
state_rc.borrow_mut().modules.register(
|
|
id,
|
|
name,
|
|
main,
|
|
v8::Global::<v8::Module>::new(tc_scope, module),
|
|
import_specifiers,
|
|
);
|
|
|
|
Ok(id)
|
|
}
|
|
|
|
/// Instantiates a ES module
|
|
///
|
|
/// ErrBox can be downcast to a type that exposes additional information about
|
|
/// the V8 exception. By default this type is JsError, however it may be a
|
|
/// different type if JsRuntime::set_js_error_create_fn() has been used.
|
|
fn mod_instantiate(&mut self, id: ModuleId) -> Result<(), ErrBox> {
|
|
let state_rc = Self::state(self);
|
|
let state = state_rc.borrow();
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **self,
|
|
state.global_context.as_ref().unwrap(),
|
|
);
|
|
let tc_scope = &mut v8::TryCatch::new(scope);
|
|
|
|
let module = match state.modules.get_info(id) {
|
|
Some(info) => v8::Local::new(tc_scope, &info.handle),
|
|
None if id == 0 => return Ok(()),
|
|
_ => panic!("module id {} not found in module table", id),
|
|
};
|
|
drop(state);
|
|
|
|
if module.get_status() == v8::ModuleStatus::Errored {
|
|
exception_to_err_result(tc_scope, module.get_exception())?
|
|
}
|
|
|
|
let result =
|
|
module.instantiate_module(tc_scope, bindings::module_resolve_callback);
|
|
match result {
|
|
Some(_) => Ok(()),
|
|
None => {
|
|
let exception = tc_scope.exception().unwrap();
|
|
exception_to_err_result(tc_scope, exception)
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Evaluates an already instantiated ES module.
|
|
///
|
|
/// ErrBox can be downcast to a type that exposes additional information about
|
|
/// the V8 exception. By default this type is JsError, however it may be a
|
|
/// different type if JsRuntime::set_js_error_create_fn() has been used.
|
|
pub fn mod_evaluate(&mut self, id: ModuleId) -> Result<(), ErrBox> {
|
|
self.shared_init();
|
|
|
|
let state_rc = Self::state(self);
|
|
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **self,
|
|
state_rc.borrow().global_context.as_ref().unwrap(),
|
|
);
|
|
|
|
let module = state_rc
|
|
.borrow()
|
|
.modules
|
|
.get_info(id)
|
|
.map(|info| v8::Local::new(scope, &info.handle))
|
|
.expect("ModuleInfo not found");
|
|
let mut status = module.get_status();
|
|
|
|
if status == v8::ModuleStatus::Instantiated {
|
|
// 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 maybe_value = module.evaluate(scope);
|
|
|
|
// Update status after evaluating.
|
|
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 promise_id = promise.get_identity_hash();
|
|
let mut state = state_rc.borrow_mut();
|
|
state.pending_promise_exceptions.remove(&promise_id);
|
|
} else {
|
|
assert!(status == v8::ModuleStatus::Errored);
|
|
}
|
|
}
|
|
|
|
match status {
|
|
v8::ModuleStatus::Evaluated => Ok(()),
|
|
v8::ModuleStatus::Errored => {
|
|
let exception = module.get_exception();
|
|
exception_to_err_result(scope, exception)
|
|
.map_err(|err| attach_handle_to_error(scope, err, exception))
|
|
}
|
|
other => panic!("Unexpected module status {:?}", other),
|
|
}
|
|
}
|
|
|
|
fn dyn_import_error(
|
|
&mut self,
|
|
id: ModuleLoadId,
|
|
err: ErrBox,
|
|
) -> Result<(), ErrBox> {
|
|
let state_rc = Self::state(self);
|
|
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **self,
|
|
state_rc.borrow().global_context.as_ref().unwrap(),
|
|
);
|
|
|
|
let resolver_handle = state_rc
|
|
.borrow_mut()
|
|
.dyn_import_map
|
|
.remove(&id)
|
|
.expect("Invalid dyn import id");
|
|
let resolver = resolver_handle.get(scope);
|
|
|
|
let exception = err
|
|
.downcast_ref::<ErrWithV8Handle>()
|
|
.map(|err| err.get_handle(scope))
|
|
.unwrap_or_else(|| {
|
|
let message = err.to_string();
|
|
let message = v8::String::new(scope, &message).unwrap();
|
|
v8::Exception::type_error(scope, message)
|
|
});
|
|
|
|
resolver.reject(scope, exception).unwrap();
|
|
scope.perform_microtask_checkpoint();
|
|
Ok(())
|
|
}
|
|
|
|
fn dyn_import_done(
|
|
&mut self,
|
|
id: ModuleLoadId,
|
|
mod_id: ModuleId,
|
|
) -> Result<(), ErrBox> {
|
|
let state_rc = Self::state(self);
|
|
|
|
debug!("dyn_import_done {} {:?}", id, mod_id);
|
|
assert!(mod_id != 0);
|
|
let scope = &mut v8::HandleScope::with_context(
|
|
&mut **self,
|
|
state_rc.borrow().global_context.as_ref().unwrap(),
|
|
);
|
|
|
|
let resolver_handle = state_rc
|
|
.borrow_mut()
|
|
.dyn_import_map
|
|
.remove(&id)
|
|
.expect("Invalid dyn import id");
|
|
let resolver = resolver_handle.get(scope);
|
|
|
|
let module = {
|
|
let state = state_rc.borrow();
|
|
state
|
|
.modules
|
|
.get_info(mod_id)
|
|
.map(|info| v8::Local::new(scope, &info.handle))
|
|
.expect("Dyn import module info not found")
|
|
};
|
|
// Resolution success
|
|
assert_eq!(module.get_status(), v8::ModuleStatus::Evaluated);
|
|
|
|
let module_namespace = module.get_module_namespace();
|
|
resolver.resolve(scope, module_namespace).unwrap();
|
|
scope.perform_microtask_checkpoint();
|
|
Ok(())
|
|
}
|
|
|
|
fn prepare_dyn_imports(
|
|
&mut self,
|
|
cx: &mut Context,
|
|
) -> Poll<Result<(), ErrBox>> {
|
|
let state_rc = Self::state(self);
|
|
|
|
loop {
|
|
let r = {
|
|
let mut state = state_rc.borrow_mut();
|
|
state.preparing_dyn_imports.poll_next_unpin(cx)
|
|
};
|
|
match r {
|
|
Poll::Pending | Poll::Ready(None) => {
|
|
// There are no active dynamic import loaders, or none are ready.
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
Poll::Ready(Some(prepare_poll)) => {
|
|
let dyn_import_id = prepare_poll.0;
|
|
let prepare_result = prepare_poll.1;
|
|
|
|
match prepare_result {
|
|
Ok(load) => {
|
|
let state = state_rc.borrow_mut();
|
|
state.pending_dyn_imports.push(load.into_future());
|
|
}
|
|
Err(err) => {
|
|
self.dyn_import_error(dyn_import_id, err)?;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn poll_dyn_imports(&mut self, cx: &mut Context) -> Poll<Result<(), ErrBox>> {
|
|
let state_rc = Self::state(self);
|
|
loop {
|
|
let poll_result = {
|
|
let mut state = state_rc.borrow_mut();
|
|
state.pending_dyn_imports.poll_next_unpin(cx)
|
|
};
|
|
|
|
match poll_result {
|
|
Poll::Pending | Poll::Ready(None) => {
|
|
// There are no active dynamic import loaders, or none are ready.
|
|
return Poll::Ready(Ok(()));
|
|
}
|
|
Poll::Ready(Some(load_stream_poll)) => {
|
|
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(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.
|
|
match self.register_during_load(info, &mut load) {
|
|
Ok(()) => {
|
|
// Keep importing until it's fully drained
|
|
let state = state_rc.borrow_mut();
|
|
state.pending_dyn_imports.push(load.into_future());
|
|
}
|
|
Err(err) => self.dyn_import_error(dyn_import_id, err)?,
|
|
}
|
|
}
|
|
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.
|
|
self.dyn_import_error(dyn_import_id, err)?
|
|
}
|
|
}
|
|
} else {
|
|
// The top-level module from a dynamic import has been instantiated.
|
|
// Load is done.
|
|
let module_id = load.root_module_id.unwrap();
|
|
self.mod_instantiate(module_id)?;
|
|
match self.mod_evaluate(module_id) {
|
|
Ok(()) => self.dyn_import_done(dyn_import_id, module_id)?,
|
|
Err(err) => self.dyn_import_error(dyn_import_id, err)?,
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn register_during_load(
|
|
&mut self,
|
|
info: ModuleSource,
|
|
load: &mut RecursiveModuleLoad,
|
|
) -> Result<(), ErrBox> {
|
|
let ModuleSource {
|
|
code,
|
|
module_url_specified,
|
|
module_url_found,
|
|
} = info;
|
|
|
|
let is_main =
|
|
load.state == LoadState::LoadingRoot && !load.is_dynamic_import();
|
|
let referrer_specifier =
|
|
ModuleSpecifier::resolve_url(&module_url_found).unwrap();
|
|
|
|
let state_rc = Self::state(self);
|
|
// #A There are 3 cases to handle at this moment:
|
|
// 1. Source code resolved result have the same module name as requested
|
|
// and is not yet registered
|
|
// -> register
|
|
// 2. Source code resolved result have a different name as requested:
|
|
// 2a. The module with resolved module name has been registered
|
|
// -> alias
|
|
// 2b. The module with resolved module name has not yet been registered
|
|
// -> register & alias
|
|
|
|
// If necessary, register an alias.
|
|
if module_url_specified != module_url_found {
|
|
let mut state = state_rc.borrow_mut();
|
|
state
|
|
.modules
|
|
.alias(&module_url_specified, &module_url_found);
|
|
}
|
|
|
|
let maybe_mod_id = {
|
|
let state = state_rc.borrow();
|
|
state.modules.get_id(&module_url_found)
|
|
};
|
|
|
|
let module_id = match maybe_mod_id {
|
|
Some(id) => {
|
|
// Module has already been registered.
|
|
debug!(
|
|
"Already-registered module fetched again: {}",
|
|
module_url_found
|
|
);
|
|
id
|
|
}
|
|
// Module not registered yet, do it now.
|
|
None => self.mod_new(is_main, &module_url_found, &code)?,
|
|
};
|
|
|
|
// Now we must iterate over all imports of the module and load them.
|
|
let imports = {
|
|
let state_rc = Self::state(self);
|
|
let state = state_rc.borrow();
|
|
state.modules.get_children(module_id).unwrap().clone()
|
|
};
|
|
|
|
for module_specifier in imports {
|
|
let is_registered = {
|
|
let state_rc = Self::state(self);
|
|
let state = state_rc.borrow();
|
|
state.modules.is_registered(&module_specifier)
|
|
};
|
|
if !is_registered {
|
|
load
|
|
.add_import(module_specifier.to_owned(), referrer_specifier.clone());
|
|
}
|
|
}
|
|
|
|
// If we just finished loading the root module, store the root module id.
|
|
if load.state == LoadState::LoadingRoot {
|
|
load.root_module_id = Some(module_id);
|
|
load.state = LoadState::LoadingImports;
|
|
}
|
|
|
|
if load.pending.is_empty() {
|
|
load.state = LoadState::Done;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Asynchronously load specified module and all of it's dependencies
|
|
///
|
|
/// User must call `JsRuntime::mod_evaluate` with returned `ModuleId`
|
|
/// manually after load is finished.
|
|
pub async fn load_module(
|
|
&mut self,
|
|
specifier: &ModuleSpecifier,
|
|
code: Option<String>,
|
|
) -> Result<ModuleId, ErrBox> {
|
|
self.shared_init();
|
|
let loader = {
|
|
let state_rc = Self::state(self);
|
|
let state = state_rc.borrow();
|
|
state.loader.clone()
|
|
};
|
|
|
|
let load = RecursiveModuleLoad::main(&specifier.to_string(), code, loader);
|
|
let (_load_id, prepare_result) = load.prepare().await;
|
|
|
|
let mut load = prepare_result?;
|
|
|
|
while let Some(info_result) = load.next().await {
|
|
let info = info_result?;
|
|
self.register_during_load(info, &mut load)?;
|
|
}
|
|
|
|
let root_id = load.root_module_id.expect("Root module id empty");
|
|
self.mod_instantiate(root_id).map(|_| root_id)
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
pub mod tests {
|
|
use super::*;
|
|
use crate::modules::ModuleSourceFuture;
|
|
use crate::ops::*;
|
|
use crate::BasicState;
|
|
use crate::BufVec;
|
|
use futures::future::lazy;
|
|
use futures::FutureExt;
|
|
use std::io;
|
|
use std::ops::FnOnce;
|
|
use std::rc::Rc;
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
|
use std::sync::Arc;
|
|
|
|
pub fn run_in_task<F>(f: F)
|
|
where
|
|
F: FnOnce(&mut Context) + Send + 'static,
|
|
{
|
|
futures::executor::block_on(lazy(move |cx| f(cx)));
|
|
}
|
|
|
|
fn poll_until_ready<F>(future: &mut F, max_poll_count: usize) -> F::Output
|
|
where
|
|
F: Future + Unpin,
|
|
{
|
|
let mut cx = Context::from_waker(futures::task::noop_waker_ref());
|
|
for _ in 0..max_poll_count {
|
|
match future.poll_unpin(&mut cx) {
|
|
Poll::Pending => continue,
|
|
Poll::Ready(val) => return val,
|
|
}
|
|
}
|
|
panic!(
|
|
"JsRuntime still not ready after polling {} times.",
|
|
max_poll_count
|
|
)
|
|
}
|
|
|
|
enum Mode {
|
|
Async,
|
|
AsyncUnref,
|
|
AsyncZeroCopy(u8),
|
|
OverflowReqSync,
|
|
OverflowResSync,
|
|
OverflowReqAsync,
|
|
OverflowResAsync,
|
|
}
|
|
|
|
struct TestOpRouter {
|
|
mode: Mode,
|
|
dispatch_count: Arc<AtomicUsize>,
|
|
}
|
|
|
|
impl OpRouter for TestOpRouter {
|
|
fn route_op(self: Rc<Self>, op_id: OpId, bufs: BufVec) -> Op {
|
|
if op_id != 1 {
|
|
return Op::NotFound;
|
|
}
|
|
self.dispatch_count.fetch_add(1, Ordering::Relaxed);
|
|
match self.mode {
|
|
Mode::Async => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 1);
|
|
assert_eq!(bufs[0][0], 42);
|
|
let buf = vec![43u8].into_boxed_slice();
|
|
Op::Async(futures::future::ready(buf).boxed())
|
|
}
|
|
Mode::AsyncUnref => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 1);
|
|
assert_eq!(bufs[0][0], 42);
|
|
let fut = async {
|
|
// This future never finish.
|
|
futures::future::pending::<()>().await;
|
|
vec![43u8].into_boxed_slice()
|
|
};
|
|
Op::AsyncUnref(fut.boxed())
|
|
}
|
|
Mode::AsyncZeroCopy(count) => {
|
|
assert_eq!(bufs.len(), count as usize);
|
|
bufs.iter().enumerate().for_each(|(idx, buf)| {
|
|
assert_eq!(buf.len(), 1);
|
|
assert_eq!(idx, buf[0] as usize);
|
|
});
|
|
|
|
let buf = vec![43u8].into_boxed_slice();
|
|
Op::Async(futures::future::ready(buf).boxed())
|
|
}
|
|
Mode::OverflowReqSync => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 100 * 1024 * 1024);
|
|
let buf = vec![43u8].into_boxed_slice();
|
|
Op::Sync(buf)
|
|
}
|
|
Mode::OverflowResSync => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 1);
|
|
assert_eq!(bufs[0][0], 42);
|
|
let mut vec = Vec::<u8>::new();
|
|
vec.resize(100 * 1024 * 1024, 0);
|
|
vec[0] = 99;
|
|
let buf = vec.into_boxed_slice();
|
|
Op::Sync(buf)
|
|
}
|
|
Mode::OverflowReqAsync => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 100 * 1024 * 1024);
|
|
let buf = vec![43u8].into_boxed_slice();
|
|
Op::Async(futures::future::ready(buf).boxed())
|
|
}
|
|
Mode::OverflowResAsync => {
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 1);
|
|
assert_eq!(bufs[0][0], 42);
|
|
let mut vec = Vec::<u8>::new();
|
|
vec.resize(100 * 1024 * 1024, 0);
|
|
vec[0] = 4;
|
|
let buf = vec.into_boxed_slice();
|
|
Op::Async(futures::future::ready(buf).boxed())
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn setup(mode: Mode) -> (JsRuntime, Arc<AtomicUsize>) {
|
|
let dispatch_count = Arc::new(AtomicUsize::new(0));
|
|
let test_state = Rc::new(TestOpRouter {
|
|
mode,
|
|
dispatch_count: dispatch_count.clone(),
|
|
});
|
|
let mut runtime = JsRuntime::new(test_state, StartupData::None, false);
|
|
|
|
js_check(runtime.execute(
|
|
"setup.js",
|
|
r#"
|
|
function assert(cond) {
|
|
if (!cond) {
|
|
throw Error("assert");
|
|
}
|
|
}
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
(runtime, dispatch_count)
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::Async);
|
|
js_check(runtime.execute(
|
|
"filename.js",
|
|
r#"
|
|
let control = new Uint8Array([42]);
|
|
Deno.core.send(1, control);
|
|
async function main() {
|
|
Deno.core.send(1, control);
|
|
}
|
|
main();
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch_no_zero_copy_buf() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncZeroCopy(0));
|
|
js_check(runtime.execute(
|
|
"filename.js",
|
|
r#"
|
|
Deno.core.send(1);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch_stack_zero_copy_bufs() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncZeroCopy(2));
|
|
js_check(runtime.execute(
|
|
"filename.js",
|
|
r#"
|
|
let zero_copy_a = new Uint8Array([0]);
|
|
let zero_copy_b = new Uint8Array([1]);
|
|
Deno.core.send(1, zero_copy_a, zero_copy_b);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_dispatch_heap_zero_copy_bufs() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncZeroCopy(5));
|
|
js_check(runtime.execute(
|
|
"filename.js",
|
|
r#"
|
|
let zero_copy_a = new Uint8Array([0]);
|
|
let zero_copy_b = new Uint8Array([1]);
|
|
let zero_copy_c = new Uint8Array([2]);
|
|
let zero_copy_d = new Uint8Array([3]);
|
|
let zero_copy_e = new Uint8Array([4]);
|
|
Deno.core.send(1, zero_copy_a, zero_copy_b, zero_copy_c, zero_copy_d, zero_copy_e);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_poll_async_delayed_ops() {
|
|
run_in_task(|cx| {
|
|
let (mut runtime, dispatch_count) = setup(Mode::Async);
|
|
|
|
js_check(runtime.execute(
|
|
"setup2.js",
|
|
r#"
|
|
let nrecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => {
|
|
nrecv++;
|
|
});
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
js_check(runtime.execute(
|
|
"check1.js",
|
|
r#"
|
|
assert(nrecv == 0);
|
|
let control = new Uint8Array([42]);
|
|
Deno.core.send(1, control);
|
|
assert(nrecv == 0);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
js_check(runtime.execute(
|
|
"check2.js",
|
|
r#"
|
|
assert(nrecv == 1);
|
|
Deno.core.send(1, control);
|
|
assert(nrecv == 1);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
js_check(runtime.execute("check3.js", "assert(nrecv == 2)"));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
|
|
// We are idle, so the next poll should be the last.
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn test_poll_async_optional_ops() {
|
|
run_in_task(|cx| {
|
|
let (mut runtime, dispatch_count) = setup(Mode::AsyncUnref);
|
|
js_check(runtime.execute(
|
|
"check1.js",
|
|
r#"
|
|
Deno.core.setAsyncHandler(1, (buf) => {
|
|
// This handler will never be called
|
|
assert(false);
|
|
});
|
|
let control = new Uint8Array([42]);
|
|
Deno.core.send(1, control);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
// The above op never finish, but runtime can finish
|
|
// because the op is an unreffed async op.
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn terminate_execution() {
|
|
let (mut isolate, _dispatch_count) = setup(Mode::Async);
|
|
// TODO(piscisaureus): in rusty_v8, the `thread_safe_handle()` method
|
|
// should not require a mutable reference to `struct rusty_v8::Isolate`.
|
|
let v8_isolate_handle =
|
|
isolate.v8_isolate.as_mut().unwrap().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("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.
|
|
// TODO(piscisaureus): in rusty_v8, `cancel_terminate_execution()` should
|
|
// also be implemented on `struct Isolate`.
|
|
let ok = isolate
|
|
.v8_isolate
|
|
.as_mut()
|
|
.unwrap()
|
|
.thread_safe_handle()
|
|
.cancel_terminate_execution();
|
|
assert!(ok);
|
|
|
|
// Verify that the isolate usable again.
|
|
isolate
|
|
.execute("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);
|
|
// TODO(piscisaureus): in rusty_v8, the `thread_safe_handle()` method
|
|
// should not require a mutable reference to `struct rusty_v8::Isolate`.
|
|
runtime.v8_isolate.as_mut().unwrap().thread_safe_handle()
|
|
};
|
|
|
|
// this should not SEGFAULT
|
|
v8_isolate_handle.terminate_execution();
|
|
}
|
|
|
|
#[test]
|
|
fn overflow_req_sync() {
|
|
let (mut runtime, dispatch_count) = setup(Mode::OverflowReqSync);
|
|
js_check(runtime.execute(
|
|
"overflow_req_sync.js",
|
|
r#"
|
|
let asyncRecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => { asyncRecv++ });
|
|
// Large message that will overflow the shared space.
|
|
let control = new Uint8Array(100 * 1024 * 1024);
|
|
let response = Deno.core.dispatch(1, control);
|
|
assert(response instanceof Uint8Array);
|
|
assert(response.length == 1);
|
|
assert(response[0] == 43);
|
|
assert(asyncRecv == 0);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn overflow_res_sync() {
|
|
// TODO(ry) This test is quite slow due to memcpy-ing 100MB into JS. We
|
|
// should optimize this.
|
|
let (mut runtime, dispatch_count) = setup(Mode::OverflowResSync);
|
|
js_check(runtime.execute(
|
|
"overflow_res_sync.js",
|
|
r#"
|
|
let asyncRecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => { asyncRecv++ });
|
|
// Large message that will overflow the shared space.
|
|
let control = new Uint8Array([42]);
|
|
let response = Deno.core.dispatch(1, control);
|
|
assert(response instanceof Uint8Array);
|
|
assert(response.length == 100 * 1024 * 1024);
|
|
assert(response[0] == 99);
|
|
assert(asyncRecv == 0);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn overflow_req_async() {
|
|
run_in_task(|cx| {
|
|
let (mut runtime, dispatch_count) = setup(Mode::OverflowReqAsync);
|
|
js_check(runtime.execute(
|
|
"overflow_req_async.js",
|
|
r#"
|
|
let asyncRecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => {
|
|
assert(buf.byteLength === 1);
|
|
assert(buf[0] === 43);
|
|
asyncRecv++;
|
|
});
|
|
// Large message that will overflow the shared space.
|
|
let control = new Uint8Array(100 * 1024 * 1024);
|
|
let response = Deno.core.dispatch(1, control);
|
|
// Async messages always have null response.
|
|
assert(response == null);
|
|
assert(asyncRecv == 0);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
js_check(runtime.execute("check.js", "assert(asyncRecv == 1);"));
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn overflow_res_async() {
|
|
run_in_task(|_cx| {
|
|
// TODO(ry) This test is quite slow due to memcpy-ing 100MB into JS. We
|
|
// should optimize this.
|
|
let (mut runtime, dispatch_count) = setup(Mode::OverflowResAsync);
|
|
js_check(runtime.execute(
|
|
"overflow_res_async.js",
|
|
r#"
|
|
let asyncRecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => {
|
|
assert(buf.byteLength === 100 * 1024 * 1024);
|
|
assert(buf[0] === 4);
|
|
asyncRecv++;
|
|
});
|
|
// Large message that will overflow the shared space.
|
|
let control = new Uint8Array([42]);
|
|
let response = Deno.core.dispatch(1, control);
|
|
assert(response == null);
|
|
assert(asyncRecv == 0);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
poll_until_ready(&mut runtime, 3).unwrap();
|
|
js_check(runtime.execute("check.js", "assert(asyncRecv == 1);"));
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn overflow_res_multiple_dispatch_async() {
|
|
// TODO(ry) This test is quite slow due to memcpy-ing 100MB into JS. We
|
|
// should optimize this.
|
|
run_in_task(|_cx| {
|
|
let (mut runtime, dispatch_count) = setup(Mode::OverflowResAsync);
|
|
js_check(runtime.execute(
|
|
"overflow_res_multiple_dispatch_async.js",
|
|
r#"
|
|
let asyncRecv = 0;
|
|
Deno.core.setAsyncHandler(1, (buf) => {
|
|
assert(buf.byteLength === 100 * 1024 * 1024);
|
|
assert(buf[0] === 4);
|
|
asyncRecv++;
|
|
});
|
|
// Large message that will overflow the shared space.
|
|
let control = new Uint8Array([42]);
|
|
let response = Deno.core.dispatch(1, control);
|
|
assert(response == null);
|
|
assert(asyncRecv == 0);
|
|
// Dispatch another message to verify that pending ops
|
|
// are done even if shared space overflows
|
|
Deno.core.dispatch(1, control);
|
|
"#,
|
|
));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
|
|
poll_until_ready(&mut runtime, 3).unwrap();
|
|
js_check(runtime.execute("check.js", "assert(asyncRecv == 2);"));
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn test_pre_dispatch() {
|
|
run_in_task(|mut cx| {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::OverflowResAsync);
|
|
js_check(runtime.execute(
|
|
"bad_op_id.js",
|
|
r#"
|
|
let thrown;
|
|
try {
|
|
Deno.core.dispatch(100);
|
|
} catch (e) {
|
|
thrown = e;
|
|
}
|
|
assert(String(thrown) === "TypeError: Unknown op id: 100");
|
|
"#,
|
|
));
|
|
if let Poll::Ready(Err(_)) = runtime.poll_unpin(&mut cx) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn core_test_js() {
|
|
run_in_task(|mut cx| {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
js_check(runtime.execute("core_test.js", include_str!("core_test.js")));
|
|
if let Poll::Ready(Err(_)) = runtime.poll_unpin(&mut cx) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn syntax_error() {
|
|
let mut runtime =
|
|
JsRuntime::new(BasicState::new(), StartupData::None, false);
|
|
let src = "hocuspocus(";
|
|
let r = runtime.execute("i.js", src);
|
|
let e = r.unwrap_err();
|
|
let js_error = e.downcast::<JsError>().unwrap();
|
|
assert_eq!(js_error.end_column, Some(11));
|
|
}
|
|
|
|
#[test]
|
|
fn test_encode_decode() {
|
|
run_in_task(|mut cx| {
|
|
let (mut runtime, _dispatch_count) = setup(Mode::Async);
|
|
js_check(runtime.execute(
|
|
"encode_decode_test.js",
|
|
include_str!("encode_decode_test.js"),
|
|
));
|
|
if let Poll::Ready(Err(_)) = runtime.poll_unpin(&mut cx) {
|
|
unreachable!();
|
|
}
|
|
});
|
|
}
|
|
|
|
#[test]
|
|
fn will_snapshot() {
|
|
let snapshot = {
|
|
let mut runtime =
|
|
JsRuntime::new(BasicState::new(), StartupData::None, true);
|
|
js_check(runtime.execute("a.js", "a = 1 + 2"));
|
|
runtime.snapshot()
|
|
};
|
|
|
|
let startup_data = StartupData::Snapshot(Snapshot::JustCreated(snapshot));
|
|
let mut runtime2 = JsRuntime::new(BasicState::new(), startup_data, false);
|
|
js_check(runtime2.execute("check.js", "if (a != 3) throw Error('x')"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_from_boxed_snapshot() {
|
|
let snapshot = {
|
|
let mut runtime =
|
|
JsRuntime::new(BasicState::new(), StartupData::None, true);
|
|
js_check(runtime.execute("a.js", "a = 1 + 2"));
|
|
let snap: &[u8] = &*runtime.snapshot();
|
|
Vec::from(snap).into_boxed_slice()
|
|
};
|
|
|
|
let startup_data = StartupData::Snapshot(Snapshot::Boxed(snapshot));
|
|
let mut runtime2 = JsRuntime::new(BasicState::new(), startup_data, false);
|
|
js_check(runtime2.execute("check.js", "if (a != 3) throw Error('x')"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limits() {
|
|
let heap_limits = HeapLimits {
|
|
initial: 0,
|
|
max: 20 * 1024, // 20 kB
|
|
};
|
|
let mut runtime = JsRuntime::with_heap_limits(
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
heap_limits,
|
|
);
|
|
let cb_handle = runtime.thread_safe_handle();
|
|
|
|
let callback_invoke_count = Rc::new(AtomicUsize::default());
|
|
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 name",
|
|
r#"let s = ""; while(true) { s += "Hello"; }"#,
|
|
)
|
|
.expect_err("script should fail");
|
|
assert_eq!(
|
|
"Uncaught Error: execution terminated",
|
|
err.downcast::<JsError>().unwrap().message
|
|
);
|
|
assert!(callback_invoke_count.load(Ordering::SeqCst) > 0)
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limit_cb_remove() {
|
|
let mut runtime =
|
|
JsRuntime::new(BasicState::new(), StartupData::None, false);
|
|
|
|
runtime.add_near_heap_limit_callback(|current_limit, _initial_limit| {
|
|
current_limit * 2
|
|
});
|
|
runtime.remove_near_heap_limit_callback(20 * 1024);
|
|
assert!(runtime.allocations.near_heap_limit_callback_data.is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_heap_limit_cb_multiple() {
|
|
let heap_limits = HeapLimits {
|
|
initial: 0,
|
|
max: 20 * 1024, // 20 kB
|
|
};
|
|
let mut runtime = JsRuntime::with_heap_limits(
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
heap_limits,
|
|
);
|
|
let cb_handle = runtime.thread_safe_handle();
|
|
|
|
let callback_invoke_count_first = Rc::new(AtomicUsize::default());
|
|
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::default());
|
|
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 name",
|
|
r#"let s = ""; while(true) { s += "Hello"; }"#,
|
|
)
|
|
.expect_err("script should fail");
|
|
assert_eq!(
|
|
"Uncaught Error: execution terminated",
|
|
err.downcast::<JsError>().unwrap().message
|
|
);
|
|
assert_eq!(0, callback_invoke_count_first.load(Ordering::SeqCst));
|
|
assert!(callback_invoke_count_second.load(Ordering::SeqCst) > 0);
|
|
}
|
|
|
|
#[test]
|
|
fn test_mods() {
|
|
#[derive(Default)]
|
|
struct ModsLoader {
|
|
pub count: Arc<AtomicUsize>,
|
|
}
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, ErrBox> {
|
|
self.count.fetch_add(1, Ordering::Relaxed);
|
|
assert_eq!(specifier, "./b.js");
|
|
assert_eq!(referrer, "file:///a.js");
|
|
let s = ModuleSpecifier::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 = Rc::new(ModsLoader::default());
|
|
let state = BasicState::new();
|
|
|
|
let resolve_count = loader.count.clone();
|
|
let dispatch_count = Arc::new(AtomicUsize::new(0));
|
|
let dispatch_count_ = dispatch_count.clone();
|
|
|
|
let dispatcher = move |_state: Rc<BasicState>, bufs: BufVec| -> Op {
|
|
dispatch_count_.fetch_add(1, Ordering::Relaxed);
|
|
assert_eq!(bufs.len(), 1);
|
|
assert_eq!(bufs[0].len(), 1);
|
|
assert_eq!(bufs[0][0], 42);
|
|
let buf = [43u8, 0, 0, 0][..].into();
|
|
Op::Async(futures::future::ready(buf).boxed())
|
|
};
|
|
state.register_op("test", dispatcher);
|
|
|
|
let mut runtime =
|
|
JsRuntime::new_with_loader(loader, state, StartupData::None, false);
|
|
|
|
js_check(runtime.execute(
|
|
"setup.js",
|
|
r#"
|
|
function assert(cond) {
|
|
if (!cond) {
|
|
throw Error("assert");
|
|
}
|
|
}
|
|
"#,
|
|
));
|
|
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
|
|
let specifier_a = "file:///a.js".to_string();
|
|
let mod_a = runtime
|
|
.mod_new(
|
|
true,
|
|
&specifier_a,
|
|
r#"
|
|
import { b } from './b.js'
|
|
if (b() != 'b') throw Error();
|
|
let control = new Uint8Array([42]);
|
|
Deno.core.send(1, control);
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
|
|
let state_rc = JsRuntime::state(&runtime);
|
|
{
|
|
let state = state_rc.borrow();
|
|
let imports = state.modules.get_children(mod_a);
|
|
assert_eq!(
|
|
imports,
|
|
Some(&vec![ModuleSpecifier::resolve_url("file:///b.js").unwrap()])
|
|
);
|
|
}
|
|
let mod_b = runtime
|
|
.mod_new(false, "file:///b.js", "export function b() { return 'b' }")
|
|
.unwrap();
|
|
{
|
|
let state = state_rc.borrow();
|
|
let imports = state.modules.get_children(mod_b).unwrap();
|
|
assert_eq!(imports.len(), 0);
|
|
}
|
|
|
|
js_check(runtime.mod_instantiate(mod_b));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
assert_eq!(resolve_count.load(Ordering::SeqCst), 1);
|
|
|
|
js_check(runtime.mod_instantiate(mod_a));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 0);
|
|
|
|
js_check(runtime.mod_evaluate(mod_a));
|
|
assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
|
|
}
|
|
|
|
#[test]
|
|
fn dyn_import_err() {
|
|
#[derive(Clone, Default)]
|
|
struct DynImportErrLoader {
|
|
pub count: Arc<AtomicUsize>,
|
|
}
|
|
|
|
impl ModuleLoader for DynImportErrLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, ErrBox> {
|
|
self.count.fetch_add(1, Ordering::Relaxed);
|
|
assert_eq!(specifier, "/foo.js");
|
|
assert_eq!(referrer, "file:///dyn_import2.js");
|
|
let s = ModuleSpecifier::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(io::Error::from(io::ErrorKind::NotFound).into()) }.boxed()
|
|
}
|
|
}
|
|
|
|
// Test an erroneous dynamic import where the specified module isn't found.
|
|
run_in_task(|cx| {
|
|
let loader = Rc::new(DynImportErrLoader::default());
|
|
let count = loader.count.clone();
|
|
let mut runtime = JsRuntime::new_with_loader(
|
|
loader,
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
false,
|
|
);
|
|
|
|
js_check(runtime.execute(
|
|
"file:///dyn_import2.js",
|
|
r#"
|
|
(async () => {
|
|
await import("/foo.js");
|
|
})();
|
|
"#,
|
|
));
|
|
|
|
assert_eq!(count.load(Ordering::Relaxed), 0);
|
|
// We should get an error here.
|
|
let result = runtime.poll_unpin(cx);
|
|
if let Poll::Ready(Ok(_)) = result {
|
|
unreachable!();
|
|
}
|
|
assert_eq!(count.load(Ordering::Relaxed), 2);
|
|
})
|
|
}
|
|
|
|
#[derive(Clone, Default)]
|
|
struct DynImportOkLoader {
|
|
pub prepare_load_count: Arc<AtomicUsize>,
|
|
pub resolve_count: Arc<AtomicUsize>,
|
|
pub load_count: Arc<AtomicUsize>,
|
|
}
|
|
|
|
impl ModuleLoader for DynImportOkLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, ErrBox> {
|
|
let c = self.resolve_count.fetch_add(1, Ordering::Relaxed);
|
|
assert!(c < 4);
|
|
assert_eq!(specifier, "./b.js");
|
|
assert_eq!(referrer, "file:///dyn_import3.js");
|
|
let s = ModuleSpecifier::resolve_import(specifier, referrer).unwrap();
|
|
Ok(s)
|
|
}
|
|
|
|
fn load(
|
|
&self,
|
|
specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<ModuleSpecifier>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<ModuleSourceFuture>> {
|
|
self.load_count.fetch_add(1, Ordering::Relaxed);
|
|
let info = ModuleSource {
|
|
module_url_specified: specifier.to_string(),
|
|
module_url_found: specifier.to_string(),
|
|
code: "export function b() { return 'b' }".to_owned(),
|
|
};
|
|
async move { Ok(info) }.boxed()
|
|
}
|
|
|
|
fn prepare_load(
|
|
&self,
|
|
_load_id: ModuleLoadId,
|
|
_module_specifier: &ModuleSpecifier,
|
|
_maybe_referrer: Option<String>,
|
|
_is_dyn_import: bool,
|
|
) -> Pin<Box<dyn Future<Output = Result<(), ErrBox>>>> {
|
|
self.prepare_load_count.fetch_add(1, Ordering::Relaxed);
|
|
async { Ok(()) }.boxed_local()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn dyn_import_ok() {
|
|
run_in_task(|cx| {
|
|
let loader = Rc::new(DynImportOkLoader::default());
|
|
let prepare_load_count = loader.prepare_load_count.clone();
|
|
let resolve_count = loader.resolve_count.clone();
|
|
let load_count = loader.load_count.clone();
|
|
let mut runtime = JsRuntime::new_with_loader(
|
|
loader,
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
false,
|
|
);
|
|
|
|
// Dynamically import mod_b
|
|
js_check(runtime.execute(
|
|
"file:///dyn_import3.js",
|
|
r#"
|
|
(async () => {
|
|
let mod = await import("./b.js");
|
|
if (mod.b() !== 'b') {
|
|
throw Error("bad1");
|
|
}
|
|
// And again!
|
|
mod = await import("./b.js");
|
|
if (mod.b() !== 'b') {
|
|
throw Error("bad2");
|
|
}
|
|
})();
|
|
"#,
|
|
));
|
|
|
|
// First poll runs `prepare_load` hook.
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Pending));
|
|
assert_eq!(prepare_load_count.load(Ordering::Relaxed), 1);
|
|
|
|
// Second poll actually loads modules into the isolate.
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
assert_eq!(resolve_count.load(Ordering::Relaxed), 4);
|
|
assert_eq!(load_count.load(Ordering::Relaxed), 2);
|
|
assert!(matches!(runtime.poll_unpin(cx), Poll::Ready(Ok(_))));
|
|
assert_eq!(resolve_count.load(Ordering::Relaxed), 4);
|
|
assert_eq!(load_count.load(Ordering::Relaxed), 2);
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn dyn_import_borrow_mut_error() {
|
|
// https://github.com/denoland/deno/issues/6054
|
|
run_in_task(|cx| {
|
|
let loader = Rc::new(DynImportOkLoader::default());
|
|
let prepare_load_count = loader.prepare_load_count.clone();
|
|
let mut runtime = JsRuntime::new_with_loader(
|
|
loader,
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
false,
|
|
);
|
|
js_check(runtime.execute(
|
|
"file:///dyn_import3.js",
|
|
r#"
|
|
(async () => {
|
|
let mod = await import("./b.js");
|
|
if (mod.b() !== 'b') {
|
|
throw Error("bad");
|
|
}
|
|
// Now do any op
|
|
Deno.core.ops();
|
|
})();
|
|
"#,
|
|
));
|
|
// First poll runs `prepare_load` hook.
|
|
let _ = runtime.poll_unpin(cx);
|
|
assert_eq!(prepare_load_count.load(Ordering::Relaxed), 1);
|
|
// Second poll triggers error
|
|
let _ = runtime.poll_unpin(cx);
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn es_snapshot() {
|
|
#[derive(Default)]
|
|
struct ModsLoader;
|
|
|
|
impl ModuleLoader for ModsLoader {
|
|
fn resolve(
|
|
&self,
|
|
specifier: &str,
|
|
referrer: &str,
|
|
_is_main: bool,
|
|
) -> Result<ModuleSpecifier, ErrBox> {
|
|
assert_eq!(specifier, "file:///main.js");
|
|
assert_eq!(referrer, ".");
|
|
let s = ModuleSpecifier::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_with_loader(
|
|
loader,
|
|
BasicState::new(),
|
|
StartupData::None,
|
|
true,
|
|
);
|
|
|
|
let specifier = ModuleSpecifier::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_module(&specifier, Some(source_code)),
|
|
)
|
|
.unwrap();
|
|
|
|
js_check(runtime.mod_evaluate(module_id));
|
|
|
|
let _snapshot = runtime.snapshot();
|
|
}
|
|
}
|