forked from mirrors/gecko-dev
569b5f037a
Differential Revision: https://phabricator.services.mozilla.com/D35629 --HG-- extra : moz-landing-system : lando
4965 lines
150 KiB
C++
4965 lines
150 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WorkerPrivate.h"
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#include <utility>
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#include "js/CompilationAndEvaluation.h"
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#include "js/ContextOptions.h"
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#include "js/LocaleSensitive.h"
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#include "js/MemoryMetrics.h"
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#include "js/SourceText.h"
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#include "MessageEventRunnable.h"
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#include "mozilla/ScopeExit.h"
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#include "mozilla/StaticPrefs.h"
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#include "mozilla/dom/BlobURLProtocolHandler.h"
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#include "mozilla/dom/CallbackDebuggerNotification.h"
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#include "mozilla/dom/ClientManager.h"
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#include "mozilla/dom/ClientSource.h"
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#include "mozilla/dom/ClientState.h"
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#include "mozilla/dom/Console.h"
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#include "mozilla/dom/DOMTypes.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/FunctionBinding.h"
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#include "mozilla/dom/IndexedDatabaseManager.h"
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#include "mozilla/dom/MessageEvent.h"
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#include "mozilla/dom/MessageEventBinding.h"
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#include "mozilla/dom/MessagePort.h"
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#include "mozilla/dom/MessagePortBinding.h"
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#include "mozilla/dom/nsCSPContext.h"
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#include "mozilla/dom/nsCSPUtils.h"
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#include "mozilla/dom/Performance.h"
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#include "mozilla/dom/PerformanceStorageWorker.h"
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#include "mozilla/dom/PromiseDebugging.h"
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#include "mozilla/dom/RemoteWorkerChild.h"
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#include "mozilla/dom/TimeoutHandler.h"
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#include "mozilla/dom/WorkerBinding.h"
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#include "mozilla/StorageAccess.h"
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#include "mozilla/ThreadEventQueue.h"
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#include "mozilla/ThrottledEventQueue.h"
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#include "mozilla/TimelineConsumers.h"
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#include "mozilla/WorkerTimelineMarker.h"
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#include "nsCycleCollector.h"
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#include "nsGlobalWindowInner.h"
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#include "nsNetUtil.h"
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#include "nsIMemoryReporter.h"
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#include "nsIPermissionManager.h"
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#include "nsIRandomGenerator.h"
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#include "nsIScriptError.h"
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#include "nsIURI.h"
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#include "nsIURL.h"
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#include "nsPrintfCString.h"
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#include "nsQueryObject.h"
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#include "nsRFPService.h"
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#include "nsSandboxFlags.h"
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#include "nsUTF8Utils.h"
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#include "RuntimeService.h"
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#include "ScriptLoader.h"
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#include "mozilla/dom/ServiceWorkerEvents.h"
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#include "mozilla/dom/ServiceWorkerManager.h"
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#include "mozilla/net/CookieSettings.h"
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#include "WorkerCSPEventListener.h"
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#include "WorkerDebugger.h"
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#include "WorkerDebuggerManager.h"
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#include "WorkerError.h"
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#include "WorkerEventTarget.h"
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#include "WorkerNavigator.h"
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#include "WorkerRef.h"
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#include "WorkerRunnable.h"
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#include "WorkerScope.h"
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#include "WorkerThread.h"
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#include "nsThreadManager.h"
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#ifdef XP_WIN
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# undef PostMessage
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#endif
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// JS_MaybeGC will run once every second during normal execution.
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#define PERIODIC_GC_TIMER_DELAY_SEC 1
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// A shrinking GC will run five seconds after the last event is processed.
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#define IDLE_GC_TIMER_DELAY_SEC 5
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static mozilla::LazyLogModule sWorkerPrivateLog("WorkerPrivate");
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static mozilla::LazyLogModule sWorkerTimeoutsLog("WorkerTimeouts");
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mozilla::LogModule* WorkerLog() { return sWorkerPrivateLog; }
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mozilla::LogModule* TimeoutsLog() { return sWorkerTimeoutsLog; }
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#ifdef LOG
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# undef LOG
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#endif
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#define LOG(log, _args) MOZ_LOG(log, LogLevel::Debug, _args);
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namespace mozilla {
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using namespace ipc;
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namespace dom {
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using namespace workerinternals;
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MOZ_DEFINE_MALLOC_SIZE_OF(JsWorkerMallocSizeOf)
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namespace {
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#ifdef DEBUG
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const nsIID kDEBUGWorkerEventTargetIID = {
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0xccaba3fa,
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0x5be2,
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0x4de2,
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{0xba, 0x87, 0x3b, 0x3b, 0x5b, 0x1d, 0x5, 0xfb}};
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#endif
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template <class T>
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class AutoPtrComparator {
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typedef nsAutoPtr<T> A;
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typedef T* B;
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public:
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bool Equals(const A& a, const B& b) const {
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return a && b ? *a == *b : !a && !b ? true : false;
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}
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bool LessThan(const A& a, const B& b) const {
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return a && b ? *a < *b : b ? true : false;
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}
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};
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template <class T>
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inline AutoPtrComparator<T> GetAutoPtrComparator(
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const nsTArray<nsAutoPtr<T>>&) {
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return AutoPtrComparator<T>();
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}
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// This class is used to wrap any runnables that the worker receives via the
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// nsIEventTarget::Dispatch() method (either from NS_DispatchToCurrentThread or
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// from the worker's EventTarget).
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class ExternalRunnableWrapper final : public WorkerRunnable {
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nsCOMPtr<nsIRunnable> mWrappedRunnable;
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public:
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ExternalRunnableWrapper(WorkerPrivate* aWorkerPrivate,
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nsIRunnable* aWrappedRunnable)
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: WorkerRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
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mWrappedRunnable(aWrappedRunnable) {
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MOZ_ASSERT(aWorkerPrivate);
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MOZ_ASSERT(aWrappedRunnable);
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}
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NS_INLINE_DECL_REFCOUNTING_INHERITED(ExternalRunnableWrapper, WorkerRunnable)
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private:
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~ExternalRunnableWrapper() {}
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virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
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// Silence bad assertions.
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return true;
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}
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virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
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bool aDispatchResult) override {
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// Silence bad assertions.
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}
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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nsresult rv = mWrappedRunnable->Run();
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if (NS_FAILED(rv)) {
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if (!JS_IsExceptionPending(aCx)) {
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Throw(aCx, rv);
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}
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return false;
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}
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return true;
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}
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nsresult Cancel() override {
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nsresult rv;
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nsCOMPtr<nsICancelableRunnable> cancelable =
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do_QueryInterface(mWrappedRunnable);
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MOZ_ASSERT(cancelable); // We checked this earlier!
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rv = cancelable->Cancel();
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nsresult rv2 = WorkerRunnable::Cancel();
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return NS_FAILED(rv) ? rv : rv2;
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}
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};
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struct WindowAction {
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nsPIDOMWindowInner* mWindow;
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bool mDefaultAction;
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MOZ_IMPLICIT WindowAction(nsPIDOMWindowInner* aWindow)
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: mWindow(aWindow), mDefaultAction(true) {}
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bool operator==(const WindowAction& aOther) const {
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return mWindow == aOther.mWindow;
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}
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};
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class WorkerFinishedRunnable final : public WorkerControlRunnable {
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WorkerPrivate* mFinishedWorker;
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public:
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WorkerFinishedRunnable(WorkerPrivate* aWorkerPrivate,
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WorkerPrivate* aFinishedWorker)
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: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
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mFinishedWorker(aFinishedWorker) {}
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private:
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virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
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// Silence bad assertions.
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return true;
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}
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virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
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bool aDispatchResult) override {
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// Silence bad assertions.
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}
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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if (!mFinishedWorker->ProxyReleaseMainThreadObjects()) {
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NS_WARNING("Failed to dispatch, going to leak!");
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}
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RuntimeService* runtime = RuntimeService::GetService();
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NS_ASSERTION(runtime, "This should never be null!");
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mFinishedWorker->DisableDebugger();
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runtime->UnregisterWorker(mFinishedWorker);
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mFinishedWorker->ClearSelfAndParentEventTargetRef();
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return true;
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}
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};
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class TopLevelWorkerFinishedRunnable final : public Runnable {
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WorkerPrivate* mFinishedWorker;
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public:
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explicit TopLevelWorkerFinishedRunnable(WorkerPrivate* aFinishedWorker)
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: mozilla::Runnable("TopLevelWorkerFinishedRunnable"),
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mFinishedWorker(aFinishedWorker) {
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aFinishedWorker->AssertIsOnWorkerThread();
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}
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NS_INLINE_DECL_REFCOUNTING_INHERITED(TopLevelWorkerFinishedRunnable, Runnable)
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private:
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~TopLevelWorkerFinishedRunnable() {}
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NS_IMETHOD
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Run() override {
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AssertIsOnMainThread();
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RuntimeService* runtime = RuntimeService::GetService();
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MOZ_ASSERT(runtime);
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mFinishedWorker->DisableDebugger();
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runtime->UnregisterWorker(mFinishedWorker);
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if (!mFinishedWorker->ProxyReleaseMainThreadObjects()) {
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NS_WARNING("Failed to dispatch, going to leak!");
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}
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mFinishedWorker->ClearSelfAndParentEventTargetRef();
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return NS_OK;
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}
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};
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class ModifyBusyCountRunnable final : public WorkerControlRunnable {
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bool mIncrease;
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public:
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ModifyBusyCountRunnable(WorkerPrivate* aWorkerPrivate, bool aIncrease)
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: WorkerControlRunnable(aWorkerPrivate, ParentThreadUnchangedBusyCount),
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mIncrease(aIncrease) {}
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private:
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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return aWorkerPrivate->ModifyBusyCount(mIncrease);
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}
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virtual void PostRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate,
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bool aRunResult) override {
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if (mIncrease) {
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WorkerControlRunnable::PostRun(aCx, aWorkerPrivate, aRunResult);
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return;
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}
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// Don't do anything here as it's possible that aWorkerPrivate has been
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// deleted.
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}
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};
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class CompileScriptRunnable final : public WorkerDebuggeeRunnable {
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nsString mScriptURL;
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UniquePtr<SerializedStackHolder> mOriginStack;
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public:
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explicit CompileScriptRunnable(WorkerPrivate* aWorkerPrivate,
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UniquePtr<SerializedStackHolder> aOriginStack,
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const nsAString& aScriptURL)
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: WorkerDebuggeeRunnable(aWorkerPrivate, WorkerThreadModifyBusyCount),
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mScriptURL(aScriptURL),
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mOriginStack(aOriginStack.release()) {}
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private:
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// We can't implement PreRun effectively, because at the point when that would
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// run we have not yet done our load so don't know things like our final
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// principal and whatnot.
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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aWorkerPrivate->AssertIsOnWorkerThread();
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if (NS_WARN_IF(!aWorkerPrivate->EnsureClientSource())) {
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return false;
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}
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if (NS_WARN_IF(!aWorkerPrivate->EnsureCSPEventListener())) {
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return false;
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}
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// PerformanceStorage & PerformanceCounter both need to be initialized
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// on the worker thread before being used on main-thread.
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// Let's be sure that it is created before any
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// content loading.
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aWorkerPrivate->EnsurePerformanceStorage();
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aWorkerPrivate->EnsurePerformanceCounter();
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ErrorResult rv;
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workerinternals::LoadMainScript(aWorkerPrivate, std::move(mOriginStack),
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mScriptURL, WorkerScript, rv);
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rv.WouldReportJSException();
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// Explicitly ignore NS_BINDING_ABORTED on rv. Or more precisely, still
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// return false and don't SetWorkerScriptExecutedSuccessfully() in that
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// case, but don't throw anything on aCx. The idea is to not dispatch error
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// events if our load is canceled with that error code.
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if (rv.ErrorCodeIs(NS_BINDING_ABORTED)) {
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rv.SuppressException();
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return false;
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}
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WorkerGlobalScope* globalScope = aWorkerPrivate->GlobalScope();
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if (NS_WARN_IF(!globalScope)) {
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// We never got as far as calling GetOrCreateGlobalScope, or it failed.
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// We have no way to enter a compartment, hence no sane way to report this
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// error. :(
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rv.SuppressException();
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return false;
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}
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// Make sure to propagate exceptions from rv onto aCx, so that they will get
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// reported after we return. We want to propagate just JS exceptions,
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// because all the other errors are handled when the script is loaded.
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// See: https://dom.spec.whatwg.org/#concept-event-fire
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if (rv.Failed() && !rv.IsJSException()) {
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WorkerErrorReport::CreateAndDispatchGenericErrorRunnableToParent(
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aWorkerPrivate);
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rv.SuppressException();
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return false;
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}
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// This is a little dumb, but aCx is in the null realm here because we
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// set it up that way in our Run(), since we had not created the global at
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// that point yet. So we need to enter the realm of our global,
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// because setting a pending exception on aCx involves wrapping into its
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// current compartment. Luckily we have a global now.
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JSAutoRealm ar(aCx, globalScope->GetGlobalJSObject());
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if (rv.MaybeSetPendingException(aCx)) {
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return false;
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}
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aWorkerPrivate->SetWorkerScriptExecutedSuccessfully();
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return true;
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}
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void PostRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate,
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bool aRunResult) override {
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if (!aRunResult) {
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aWorkerPrivate->CloseInternal();
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}
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WorkerRunnable::PostRun(aCx, aWorkerPrivate, aRunResult);
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}
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};
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class NotifyRunnable final : public WorkerControlRunnable {
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WorkerStatus mStatus;
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public:
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NotifyRunnable(WorkerPrivate* aWorkerPrivate, WorkerStatus aStatus)
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: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
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mStatus(aStatus) {
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MOZ_ASSERT(aStatus == Closing || aStatus == Canceling ||
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aStatus == Killing);
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}
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private:
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virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
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aWorkerPrivate->AssertIsOnParentThread();
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return aWorkerPrivate->ModifyBusyCount(true);
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}
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virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
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bool aDispatchResult) override {
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aWorkerPrivate->AssertIsOnParentThread();
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if (!aDispatchResult) {
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// We couldn't dispatch to the worker, which means it's already dead.
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// Undo the busy count modification.
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aWorkerPrivate->ModifyBusyCount(false);
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}
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}
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virtual void PostRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate,
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bool aRunResult) override {
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aWorkerPrivate->ModifyBusyCountFromWorker(false);
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}
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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return aWorkerPrivate->NotifyInternal(mStatus);
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}
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};
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class FreezeRunnable final : public WorkerControlRunnable {
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public:
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explicit FreezeRunnable(WorkerPrivate* aWorkerPrivate)
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: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount) {}
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private:
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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return aWorkerPrivate->FreezeInternal();
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}
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};
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class ThawRunnable final : public WorkerControlRunnable {
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public:
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explicit ThawRunnable(WorkerPrivate* aWorkerPrivate)
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: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount) {}
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private:
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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return aWorkerPrivate->ThawInternal();
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}
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};
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class PropagateFirstPartyStorageAccessGrantedRunnable final
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: public WorkerControlRunnable {
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public:
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explicit PropagateFirstPartyStorageAccessGrantedRunnable(
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WorkerPrivate* aWorkerPrivate)
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: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount) {}
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private:
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bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
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aWorkerPrivate->PropagateFirstPartyStorageAccessGrantedInternal();
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return true;
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}
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};
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class ReportErrorToConsoleRunnable final : public WorkerRunnable {
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const char* mMessage;
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const nsTArray<nsString> mParams;
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public:
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// aWorkerPrivate is the worker thread we're on (or the main thread, if null)
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static void Report(WorkerPrivate* aWorkerPrivate, const char* aMessage,
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const nsTArray<nsString>& aParams) {
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if (aWorkerPrivate) {
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aWorkerPrivate->AssertIsOnWorkerThread();
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} else {
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AssertIsOnMainThread();
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}
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// Now fire a runnable to do the same on the parent's thread if we can.
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if (aWorkerPrivate) {
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RefPtr<ReportErrorToConsoleRunnable> runnable =
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new ReportErrorToConsoleRunnable(aWorkerPrivate, aMessage, aParams);
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runnable->Dispatch();
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return;
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}
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// Log a warning to the console.
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nsContentUtils::ReportToConsole(
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nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM"), nullptr,
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nsContentUtils::eDOM_PROPERTIES, aMessage, aParams);
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}
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private:
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ReportErrorToConsoleRunnable(WorkerPrivate* aWorkerPrivate,
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const char* aMessage,
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const nsTArray<nsString>& aParams)
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: WorkerRunnable(aWorkerPrivate, ParentThreadUnchangedBusyCount),
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mMessage(aMessage),
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mParams(aParams) {}
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virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
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bool aDispatchResult) override {
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aWorkerPrivate->AssertIsOnWorkerThread();
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// Dispatch may fail if the worker was canceled, no need to report that as
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// an error, so don't call base class PostDispatch.
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}
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virtual bool WorkerRun(JSContext* aCx,
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WorkerPrivate* aWorkerPrivate) override {
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WorkerPrivate* parent = aWorkerPrivate->GetParent();
|
|
MOZ_ASSERT_IF(!parent, NS_IsMainThread());
|
|
Report(parent, mMessage, mParams);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class TimerRunnable final : public WorkerRunnable,
|
|
public nsITimerCallback,
|
|
public nsINamed {
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
explicit TimerRunnable(WorkerPrivate* aWorkerPrivate)
|
|
: WorkerRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount) {}
|
|
|
|
private:
|
|
~TimerRunnable() {}
|
|
|
|
virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
|
|
// Silence bad assertions.
|
|
return true;
|
|
}
|
|
|
|
virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
|
|
bool aDispatchResult) override {
|
|
// Silence bad assertions.
|
|
}
|
|
|
|
// MOZ_CAN_RUN_SCRIPT_BOUNDARY until worker runnables are generally
|
|
// MOZ_CAN_RUN_SCRIPT.
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
return aWorkerPrivate->RunExpiredTimeouts(aCx);
|
|
}
|
|
|
|
NS_IMETHOD
|
|
Notify(nsITimer* aTimer) override { return Run(); }
|
|
|
|
NS_IMETHOD
|
|
GetName(nsACString& aName) override {
|
|
aName.AssignLiteral("TimerRunnable");
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS_INHERITED(TimerRunnable, WorkerRunnable, nsITimerCallback,
|
|
nsINamed)
|
|
|
|
class DebuggerImmediateRunnable : public WorkerRunnable {
|
|
RefPtr<dom::Function> mHandler;
|
|
|
|
public:
|
|
explicit DebuggerImmediateRunnable(WorkerPrivate* aWorkerPrivate,
|
|
dom::Function& aHandler)
|
|
: WorkerRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mHandler(&aHandler) {}
|
|
|
|
private:
|
|
virtual bool IsDebuggerRunnable() const override { return true; }
|
|
|
|
virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
|
|
// Silence bad assertions.
|
|
return true;
|
|
}
|
|
|
|
virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
|
|
bool aDispatchResult) override {
|
|
// Silence bad assertions.
|
|
}
|
|
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
JS::Rooted<JSObject*> global(aCx, JS::CurrentGlobalOrNull(aCx));
|
|
JS::Rooted<JS::Value> callable(
|
|
aCx, JS::ObjectOrNullValue(mHandler->CallableOrNull()));
|
|
JS::HandleValueArray args = JS::HandleValueArray::empty();
|
|
JS::Rooted<JS::Value> rval(aCx);
|
|
if (!JS_CallFunctionValue(aCx, global, callable, args, &rval)) {
|
|
// Just return false; WorkerRunnable::Run will report the exception.
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
};
|
|
|
|
void PeriodicGCTimerCallback(nsITimer* aTimer, void* aClosure) {
|
|
auto workerPrivate = static_cast<WorkerPrivate*>(aClosure);
|
|
MOZ_DIAGNOSTIC_ASSERT(workerPrivate);
|
|
workerPrivate->AssertIsOnWorkerThread();
|
|
workerPrivate->GarbageCollectInternal(workerPrivate->GetJSContext(),
|
|
false /* shrinking */,
|
|
false /* collect children */);
|
|
}
|
|
|
|
void IdleGCTimerCallback(nsITimer* aTimer, void* aClosure) {
|
|
auto workerPrivate = static_cast<WorkerPrivate*>(aClosure);
|
|
MOZ_DIAGNOSTIC_ASSERT(workerPrivate);
|
|
workerPrivate->AssertIsOnWorkerThread();
|
|
workerPrivate->GarbageCollectInternal(workerPrivate->GetJSContext(),
|
|
true /* shrinking */,
|
|
false /* collect children */);
|
|
}
|
|
|
|
class UpdateContextOptionsRunnable final : public WorkerControlRunnable {
|
|
JS::ContextOptions mContextOptions;
|
|
|
|
public:
|
|
UpdateContextOptionsRunnable(WorkerPrivate* aWorkerPrivate,
|
|
const JS::ContextOptions& aContextOptions)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mContextOptions(aContextOptions) {}
|
|
|
|
private:
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->UpdateContextOptionsInternal(aCx, mContextOptions);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class UpdateLanguagesRunnable final : public WorkerRunnable {
|
|
nsTArray<nsString> mLanguages;
|
|
|
|
public:
|
|
UpdateLanguagesRunnable(WorkerPrivate* aWorkerPrivate,
|
|
const nsTArray<nsString>& aLanguages)
|
|
: WorkerRunnable(aWorkerPrivate), mLanguages(aLanguages) {}
|
|
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->UpdateLanguagesInternal(mLanguages);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class UpdateJSWorkerMemoryParameterRunnable final
|
|
: public WorkerControlRunnable {
|
|
uint32_t mValue;
|
|
JSGCParamKey mKey;
|
|
|
|
public:
|
|
UpdateJSWorkerMemoryParameterRunnable(WorkerPrivate* aWorkerPrivate,
|
|
JSGCParamKey aKey, uint32_t aValue)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mValue(aValue),
|
|
mKey(aKey) {}
|
|
|
|
private:
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->UpdateJSWorkerMemoryParameterInternal(aCx, mKey, mValue);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
#ifdef JS_GC_ZEAL
|
|
class UpdateGCZealRunnable final : public WorkerControlRunnable {
|
|
uint8_t mGCZeal;
|
|
uint32_t mFrequency;
|
|
|
|
public:
|
|
UpdateGCZealRunnable(WorkerPrivate* aWorkerPrivate, uint8_t aGCZeal,
|
|
uint32_t aFrequency)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mGCZeal(aGCZeal),
|
|
mFrequency(aFrequency) {}
|
|
|
|
private:
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->UpdateGCZealInternal(aCx, mGCZeal, mFrequency);
|
|
return true;
|
|
}
|
|
};
|
|
#endif
|
|
|
|
class SetLowMemoryStateRunnable final : public WorkerControlRunnable {
|
|
bool mState;
|
|
|
|
public:
|
|
SetLowMemoryStateRunnable(WorkerPrivate* aWorkerPrivate, bool aState)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mState(aState) {}
|
|
|
|
private:
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->SetLowMemoryStateInternal(aCx, mState);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class GarbageCollectRunnable final : public WorkerControlRunnable {
|
|
bool mShrinking;
|
|
bool mCollectChildren;
|
|
|
|
public:
|
|
GarbageCollectRunnable(WorkerPrivate* aWorkerPrivate, bool aShrinking,
|
|
bool aCollectChildren)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mShrinking(aShrinking),
|
|
mCollectChildren(aCollectChildren) {}
|
|
|
|
private:
|
|
virtual bool PreDispatch(WorkerPrivate* aWorkerPrivate) override {
|
|
// Silence bad assertions, this can be dispatched from either the main
|
|
// thread or the timer thread..
|
|
return true;
|
|
}
|
|
|
|
virtual void PostDispatch(WorkerPrivate* aWorkerPrivate,
|
|
bool aDispatchResult) override {
|
|
// Silence bad assertions, this can be dispatched from either the main
|
|
// thread or the timer thread..
|
|
}
|
|
|
|
virtual bool WorkerRun(JSContext* aCx,
|
|
WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->GarbageCollectInternal(aCx, mShrinking, mCollectChildren);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class CycleCollectRunnable : public WorkerControlRunnable {
|
|
bool mCollectChildren;
|
|
|
|
public:
|
|
CycleCollectRunnable(WorkerPrivate* aWorkerPrivate, bool aCollectChildren)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount),
|
|
mCollectChildren(aCollectChildren) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->CycleCollectInternal(mCollectChildren);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class OfflineStatusChangeRunnable : public WorkerRunnable {
|
|
public:
|
|
OfflineStatusChangeRunnable(WorkerPrivate* aWorkerPrivate, bool aIsOffline)
|
|
: WorkerRunnable(aWorkerPrivate), mIsOffline(aIsOffline) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->OfflineStatusChangeEventInternal(mIsOffline);
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
bool mIsOffline;
|
|
};
|
|
|
|
class MemoryPressureRunnable : public WorkerControlRunnable {
|
|
public:
|
|
explicit MemoryPressureRunnable(WorkerPrivate* aWorkerPrivate)
|
|
: WorkerControlRunnable(aWorkerPrivate, WorkerThreadUnchangedBusyCount) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->MemoryPressureInternal();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
#ifdef DEBUG
|
|
static bool StartsWithExplicit(nsACString& s) {
|
|
return StringBeginsWith(s, NS_LITERAL_CSTRING("explicit/"));
|
|
}
|
|
#endif
|
|
|
|
PRThread* PRThreadFromThread(nsIThread* aThread) {
|
|
MOZ_ASSERT(aThread);
|
|
|
|
PRThread* result;
|
|
MOZ_ALWAYS_SUCCEEDS(aThread->GetPRThread(&result));
|
|
MOZ_ASSERT(result);
|
|
|
|
return result;
|
|
}
|
|
|
|
// A runnable to cancel the worker from the parent thread when self.close() is
|
|
// called. This runnable is executed on the parent process in order to cancel
|
|
// the current runnable. It uses a normal WorkerDebuggeeRunnable in order to be
|
|
// sure that all the pending WorkerDebuggeeRunnables are executed before this.
|
|
class CancelingOnParentRunnable final : public WorkerDebuggeeRunnable {
|
|
public:
|
|
explicit CancelingOnParentRunnable(WorkerPrivate* aWorkerPrivate)
|
|
: WorkerDebuggeeRunnable(aWorkerPrivate, ParentThreadUnchangedBusyCount) {
|
|
}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->Cancel();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
// A runnable to cancel the worker from the parent process.
|
|
class CancelingWithTimeoutOnParentRunnable final
|
|
: public WorkerControlRunnable {
|
|
public:
|
|
explicit CancelingWithTimeoutOnParentRunnable(WorkerPrivate* aWorkerPrivate)
|
|
: WorkerControlRunnable(aWorkerPrivate, ParentThreadUnchangedBusyCount) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
aWorkerPrivate->AssertIsOnParentThread();
|
|
aWorkerPrivate->StartCancelingTimer();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class CancelingTimerCallback final : public nsITimerCallback {
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
explicit CancelingTimerCallback(WorkerPrivate* aWorkerPrivate)
|
|
: mWorkerPrivate(aWorkerPrivate) {}
|
|
|
|
NS_IMETHOD
|
|
Notify(nsITimer* aTimer) override {
|
|
mWorkerPrivate->AssertIsOnParentThread();
|
|
mWorkerPrivate->Cancel();
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~CancelingTimerCallback() = default;
|
|
|
|
// Raw pointer here is OK because the timer is canceled during the shutdown
|
|
// steps.
|
|
WorkerPrivate* mWorkerPrivate;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(CancelingTimerCallback, nsITimerCallback)
|
|
|
|
// This runnable starts the canceling of a worker after a self.close().
|
|
class CancelingRunnable final : public Runnable {
|
|
public:
|
|
CancelingRunnable() : Runnable("CancelingRunnable") {}
|
|
|
|
NS_IMETHOD
|
|
Run() override {
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
workerPrivate->AssertIsOnWorkerThread();
|
|
|
|
// Now we can cancel the this worker from the parent process.
|
|
RefPtr<CancelingOnParentRunnable> r =
|
|
new CancelingOnParentRunnable(workerPrivate);
|
|
r->Dispatch();
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
} /* anonymous namespace */
|
|
|
|
class WorkerPrivate::EventTarget final : public nsISerialEventTarget {
|
|
// This mutex protects mWorkerPrivate and must be acquired *before* the
|
|
// WorkerPrivate's mutex whenever they must both be held.
|
|
mozilla::Mutex mMutex;
|
|
WorkerPrivate* mWorkerPrivate;
|
|
nsIEventTarget* mWeakNestedEventTarget;
|
|
nsCOMPtr<nsIEventTarget> mNestedEventTarget;
|
|
|
|
public:
|
|
explicit EventTarget(WorkerPrivate* aWorkerPrivate)
|
|
: mMutex("WorkerPrivate::EventTarget::mMutex"),
|
|
mWorkerPrivate(aWorkerPrivate),
|
|
mWeakNestedEventTarget(nullptr) {
|
|
MOZ_ASSERT(aWorkerPrivate);
|
|
}
|
|
|
|
EventTarget(WorkerPrivate* aWorkerPrivate, nsIEventTarget* aNestedEventTarget)
|
|
: mMutex("WorkerPrivate::EventTarget::mMutex"),
|
|
mWorkerPrivate(aWorkerPrivate),
|
|
mWeakNestedEventTarget(aNestedEventTarget),
|
|
mNestedEventTarget(aNestedEventTarget) {
|
|
MOZ_ASSERT(aWorkerPrivate);
|
|
MOZ_ASSERT(aNestedEventTarget);
|
|
}
|
|
|
|
void Disable() {
|
|
nsCOMPtr<nsIEventTarget> nestedEventTarget;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
// Note, Disable() can be called more than once safely.
|
|
mWorkerPrivate = nullptr;
|
|
mNestedEventTarget.swap(nestedEventTarget);
|
|
}
|
|
}
|
|
|
|
nsIEventTarget* GetWeakNestedEventTarget() const {
|
|
MOZ_ASSERT(mWeakNestedEventTarget);
|
|
return mWeakNestedEventTarget;
|
|
}
|
|
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
NS_DECL_NSIEVENTTARGET_FULL
|
|
|
|
private:
|
|
~EventTarget() {}
|
|
};
|
|
|
|
struct WorkerPrivate::TimeoutInfo {
|
|
TimeoutInfo() : mId(0), mIsInterval(false), mCanceled(false) {
|
|
MOZ_COUNT_CTOR(mozilla::dom::WorkerPrivate::TimeoutInfo);
|
|
}
|
|
|
|
~TimeoutInfo() { MOZ_COUNT_DTOR(mozilla::dom::WorkerPrivate::TimeoutInfo); }
|
|
|
|
bool operator==(const TimeoutInfo& aOther) {
|
|
return mTargetTime == aOther.mTargetTime;
|
|
}
|
|
|
|
bool operator<(const TimeoutInfo& aOther) {
|
|
return mTargetTime < aOther.mTargetTime;
|
|
}
|
|
|
|
RefPtr<TimeoutHandler> mHandler;
|
|
mozilla::TimeStamp mTargetTime;
|
|
mozilla::TimeDuration mInterval;
|
|
int32_t mId;
|
|
bool mIsInterval;
|
|
bool mCanceled;
|
|
};
|
|
|
|
class WorkerJSContextStats final : public JS::RuntimeStats {
|
|
const nsCString mRtPath;
|
|
|
|
public:
|
|
explicit WorkerJSContextStats(const nsACString& aRtPath)
|
|
: JS::RuntimeStats(JsWorkerMallocSizeOf), mRtPath(aRtPath) {}
|
|
|
|
~WorkerJSContextStats() {
|
|
for (size_t i = 0; i != zoneStatsVector.length(); i++) {
|
|
delete static_cast<xpc::ZoneStatsExtras*>(zoneStatsVector[i].extra);
|
|
}
|
|
|
|
for (size_t i = 0; i != realmStatsVector.length(); i++) {
|
|
delete static_cast<xpc::RealmStatsExtras*>(realmStatsVector[i].extra);
|
|
}
|
|
}
|
|
|
|
const nsCString& Path() const { return mRtPath; }
|
|
|
|
virtual void initExtraZoneStats(JS::Zone* aZone,
|
|
JS::ZoneStats* aZoneStats) override {
|
|
MOZ_ASSERT(!aZoneStats->extra);
|
|
|
|
// ReportJSRuntimeExplicitTreeStats expects that
|
|
// aZoneStats->extra is a xpc::ZoneStatsExtras pointer.
|
|
xpc::ZoneStatsExtras* extras = new xpc::ZoneStatsExtras;
|
|
extras->pathPrefix = mRtPath;
|
|
extras->pathPrefix += nsPrintfCString("zone(0x%p)/", (void*)aZone);
|
|
|
|
MOZ_ASSERT(StartsWithExplicit(extras->pathPrefix));
|
|
|
|
aZoneStats->extra = extras;
|
|
}
|
|
|
|
virtual void initExtraRealmStats(JS::Handle<JS::Realm*> aRealm,
|
|
JS::RealmStats* aRealmStats) override {
|
|
MOZ_ASSERT(!aRealmStats->extra);
|
|
|
|
// ReportJSRuntimeExplicitTreeStats expects that
|
|
// aRealmStats->extra is a xpc::RealmStatsExtras pointer.
|
|
xpc::RealmStatsExtras* extras = new xpc::RealmStatsExtras;
|
|
|
|
// This is the |jsPathPrefix|. Each worker has exactly one realm.
|
|
extras->jsPathPrefix.Assign(mRtPath);
|
|
extras->jsPathPrefix +=
|
|
nsPrintfCString("zone(0x%p)/", (void*)js::GetRealmZone(aRealm));
|
|
extras->jsPathPrefix += NS_LITERAL_CSTRING("realm(web-worker)/");
|
|
|
|
// This should never be used when reporting with workers (hence the "?!").
|
|
extras->domPathPrefix.AssignLiteral("explicit/workers/?!/");
|
|
|
|
MOZ_ASSERT(StartsWithExplicit(extras->jsPathPrefix));
|
|
MOZ_ASSERT(StartsWithExplicit(extras->domPathPrefix));
|
|
|
|
extras->location = nullptr;
|
|
|
|
aRealmStats->extra = extras;
|
|
}
|
|
};
|
|
|
|
class WorkerPrivate::MemoryReporter final : public nsIMemoryReporter {
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
|
|
friend class WorkerPrivate;
|
|
|
|
SharedMutex mMutex;
|
|
WorkerPrivate* mWorkerPrivate;
|
|
|
|
public:
|
|
explicit MemoryReporter(WorkerPrivate* aWorkerPrivate)
|
|
: mMutex(aWorkerPrivate->mMutex), mWorkerPrivate(aWorkerPrivate) {
|
|
aWorkerPrivate->AssertIsOnWorkerThread();
|
|
}
|
|
|
|
NS_IMETHOD
|
|
CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData,
|
|
bool aAnonymize) override;
|
|
|
|
private:
|
|
class FinishCollectRunnable;
|
|
|
|
class CollectReportsRunnable final : public MainThreadWorkerControlRunnable {
|
|
RefPtr<FinishCollectRunnable> mFinishCollectRunnable;
|
|
const bool mAnonymize;
|
|
|
|
public:
|
|
CollectReportsRunnable(WorkerPrivate* aWorkerPrivate,
|
|
nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aHandlerData, bool aAnonymize,
|
|
const nsACString& aPath);
|
|
|
|
private:
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override;
|
|
|
|
~CollectReportsRunnable() {
|
|
if (NS_IsMainThread()) {
|
|
mFinishCollectRunnable->Run();
|
|
return;
|
|
}
|
|
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
MOZ_ALWAYS_SUCCEEDS(workerPrivate->DispatchToMainThreadForMessaging(
|
|
mFinishCollectRunnable.forget()));
|
|
}
|
|
};
|
|
|
|
class FinishCollectRunnable final : public Runnable {
|
|
nsCOMPtr<nsIHandleReportCallback> mHandleReport;
|
|
nsCOMPtr<nsISupports> mHandlerData;
|
|
size_t mPerformanceUserEntries;
|
|
size_t mPerformanceResourceEntries;
|
|
const bool mAnonymize;
|
|
bool mSuccess;
|
|
|
|
public:
|
|
WorkerJSContextStats mCxStats;
|
|
|
|
explicit FinishCollectRunnable(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aHandlerData, bool aAnonymize,
|
|
const nsACString& aPath);
|
|
|
|
NS_IMETHOD Run() override;
|
|
|
|
void SetPerformanceSizes(size_t userEntries, size_t resourceEntries) {
|
|
mPerformanceUserEntries = userEntries;
|
|
mPerformanceResourceEntries = resourceEntries;
|
|
}
|
|
|
|
void SetSuccess(bool success) { mSuccess = success; }
|
|
|
|
private:
|
|
~FinishCollectRunnable() {
|
|
// mHandleReport and mHandlerData are released on the main thread.
|
|
AssertIsOnMainThread();
|
|
}
|
|
|
|
FinishCollectRunnable(const FinishCollectRunnable&) = delete;
|
|
FinishCollectRunnable& operator=(const FinishCollectRunnable&) = delete;
|
|
FinishCollectRunnable& operator=(const FinishCollectRunnable&&) = delete;
|
|
};
|
|
|
|
~MemoryReporter() {}
|
|
|
|
void Disable() {
|
|
// Called from WorkerPrivate::DisableMemoryReporter.
|
|
mMutex.AssertCurrentThreadOwns();
|
|
|
|
NS_ASSERTION(mWorkerPrivate, "Disabled more than once!");
|
|
mWorkerPrivate = nullptr;
|
|
}
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(WorkerPrivate::MemoryReporter, nsIMemoryReporter)
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::MemoryReporter::CollectReports(
|
|
nsIHandleReportCallback* aHandleReport, nsISupports* aData,
|
|
bool aAnonymize) {
|
|
AssertIsOnMainThread();
|
|
|
|
RefPtr<CollectReportsRunnable> runnable;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (!mWorkerPrivate) {
|
|
// This will effectively report 0 memory.
|
|
nsCOMPtr<nsIMemoryReporterManager> manager =
|
|
do_GetService("@mozilla.org/memory-reporter-manager;1");
|
|
if (manager) {
|
|
manager->EndReport();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoCString path;
|
|
path.AppendLiteral("explicit/workers/workers(");
|
|
if (aAnonymize && !mWorkerPrivate->Domain().IsEmpty()) {
|
|
path.AppendLiteral("<anonymized-domain>)/worker(<anonymized-url>");
|
|
} else {
|
|
nsAutoCString escapedDomain(mWorkerPrivate->Domain());
|
|
if (escapedDomain.IsEmpty()) {
|
|
escapedDomain += "chrome";
|
|
} else {
|
|
escapedDomain.ReplaceChar('/', '\\');
|
|
}
|
|
path.Append(escapedDomain);
|
|
path.AppendLiteral(")/worker(");
|
|
NS_ConvertUTF16toUTF8 escapedURL(mWorkerPrivate->ScriptURL());
|
|
escapedURL.ReplaceChar('/', '\\');
|
|
path.Append(escapedURL);
|
|
}
|
|
path.AppendPrintf(", 0x%p)/", static_cast<void*>(mWorkerPrivate));
|
|
|
|
runnable = new CollectReportsRunnable(mWorkerPrivate, aHandleReport, aData,
|
|
aAnonymize, path);
|
|
}
|
|
|
|
if (!runnable->Dispatch()) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
WorkerPrivate::MemoryReporter::CollectReportsRunnable::CollectReportsRunnable(
|
|
WorkerPrivate* aWorkerPrivate, nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aHandlerData, bool aAnonymize, const nsACString& aPath)
|
|
: MainThreadWorkerControlRunnable(aWorkerPrivate),
|
|
mFinishCollectRunnable(new FinishCollectRunnable(
|
|
aHandleReport, aHandlerData, aAnonymize, aPath)),
|
|
mAnonymize(aAnonymize) {}
|
|
|
|
bool WorkerPrivate::MemoryReporter::CollectReportsRunnable::WorkerRun(
|
|
JSContext* aCx, WorkerPrivate* aWorkerPrivate) {
|
|
aWorkerPrivate->AssertIsOnWorkerThread();
|
|
|
|
RefPtr<WorkerGlobalScope> scope = aWorkerPrivate->GlobalScope();
|
|
RefPtr<Performance> performance =
|
|
scope ? scope->GetPerformanceIfExists() : nullptr;
|
|
if (performance) {
|
|
size_t userEntries = performance->SizeOfUserEntries(JsWorkerMallocSizeOf);
|
|
size_t resourceEntries =
|
|
performance->SizeOfResourceEntries(JsWorkerMallocSizeOf);
|
|
mFinishCollectRunnable->SetPerformanceSizes(userEntries, resourceEntries);
|
|
}
|
|
|
|
mFinishCollectRunnable->SetSuccess(aWorkerPrivate->CollectRuntimeStats(
|
|
&mFinishCollectRunnable->mCxStats, mAnonymize));
|
|
|
|
return true;
|
|
}
|
|
|
|
WorkerPrivate::MemoryReporter::FinishCollectRunnable::FinishCollectRunnable(
|
|
nsIHandleReportCallback* aHandleReport, nsISupports* aHandlerData,
|
|
bool aAnonymize, const nsACString& aPath)
|
|
: mozilla::Runnable(
|
|
"dom::WorkerPrivate::MemoryReporter::FinishCollectRunnable"),
|
|
mHandleReport(aHandleReport),
|
|
mHandlerData(aHandlerData),
|
|
mPerformanceUserEntries(0),
|
|
mPerformanceResourceEntries(0),
|
|
mAnonymize(aAnonymize),
|
|
mSuccess(false),
|
|
mCxStats(aPath) {}
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::MemoryReporter::FinishCollectRunnable::Run() {
|
|
AssertIsOnMainThread();
|
|
|
|
nsCOMPtr<nsIMemoryReporterManager> manager =
|
|
do_GetService("@mozilla.org/memory-reporter-manager;1");
|
|
|
|
if (!manager) return NS_OK;
|
|
|
|
if (mSuccess) {
|
|
xpc::ReportJSRuntimeExplicitTreeStats(
|
|
mCxStats, mCxStats.Path(), mHandleReport, mHandlerData, mAnonymize);
|
|
|
|
if (mPerformanceUserEntries) {
|
|
nsCString path = mCxStats.Path();
|
|
path.AppendLiteral("dom/performance/user-entries");
|
|
mHandleReport->Callback(
|
|
EmptyCString(), path, nsIMemoryReporter::KIND_HEAP,
|
|
nsIMemoryReporter::UNITS_BYTES, mPerformanceUserEntries,
|
|
NS_LITERAL_CSTRING("Memory used for performance user entries."),
|
|
mHandlerData);
|
|
}
|
|
|
|
if (mPerformanceResourceEntries) {
|
|
nsCString path = mCxStats.Path();
|
|
path.AppendLiteral("dom/performance/resource-entries");
|
|
mHandleReport->Callback(
|
|
EmptyCString(), path, nsIMemoryReporter::KIND_HEAP,
|
|
nsIMemoryReporter::UNITS_BYTES, mPerformanceResourceEntries,
|
|
NS_LITERAL_CSTRING("Memory used for performance resource entries."),
|
|
mHandlerData);
|
|
}
|
|
}
|
|
|
|
manager->EndReport();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
WorkerPrivate::SyncLoopInfo::SyncLoopInfo(EventTarget* aEventTarget)
|
|
: mEventTarget(aEventTarget),
|
|
mCompleted(false),
|
|
mResult(false)
|
|
#ifdef DEBUG
|
|
,
|
|
mHasRun(false)
|
|
#endif
|
|
{
|
|
}
|
|
|
|
Document* WorkerPrivate::GetDocument() const {
|
|
AssertIsOnMainThread();
|
|
if (mLoadInfo.mWindow) {
|
|
return mLoadInfo.mWindow->GetExtantDoc();
|
|
}
|
|
// if we don't have a document, we should query the document
|
|
// from the parent in case of a nested worker
|
|
WorkerPrivate* parent = mParent;
|
|
while (parent) {
|
|
if (parent->mLoadInfo.mWindow) {
|
|
return parent->mLoadInfo.mWindow->GetExtantDoc();
|
|
}
|
|
parent = parent->GetParent();
|
|
}
|
|
// couldn't query a document, give up and return nullptr
|
|
return nullptr;
|
|
}
|
|
|
|
void WorkerPrivate::SetCSP(nsIContentSecurityPolicy* aCSP) {
|
|
AssertIsOnMainThread();
|
|
if (!aCSP) {
|
|
return;
|
|
}
|
|
aCSP->EnsureEventTarget(mMainThreadEventTarget);
|
|
|
|
mLoadInfo.mCSP = aCSP;
|
|
mLoadInfo.mCSPInfo = new CSPInfo();
|
|
nsresult rv = CSPToCSPInfo(mLoadInfo.mCSP, mLoadInfo.mCSPInfo);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
nsresult WorkerPrivate::SetCSPFromHeaderValues(
|
|
const nsACString& aCSPHeaderValue,
|
|
const nsACString& aCSPReportOnlyHeaderValue) {
|
|
AssertIsOnMainThread();
|
|
MOZ_DIAGNOSTIC_ASSERT(!mLoadInfo.mCSP);
|
|
|
|
NS_ConvertASCIItoUTF16 cspHeaderValue(aCSPHeaderValue);
|
|
NS_ConvertASCIItoUTF16 cspROHeaderValue(aCSPReportOnlyHeaderValue);
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsIContentSecurityPolicy> csp = new nsCSPContext();
|
|
|
|
// First, we try to query the URI from the Principal, but
|
|
// in case selfURI remains empty (e.g in case the Principal
|
|
// is a SystemPrincipal) then we fall back and use the
|
|
// base URI as selfURI for CSP.
|
|
nsCOMPtr<nsIURI> selfURI;
|
|
mLoadInfo.mPrincipal->GetURI(getter_AddRefs(selfURI));
|
|
if (!selfURI) {
|
|
selfURI = mLoadInfo.mBaseURI;
|
|
}
|
|
MOZ_ASSERT(selfURI, "need a self URI for CSP");
|
|
|
|
rv = csp->SetRequestContextWithPrincipal(mLoadInfo.mPrincipal, selfURI,
|
|
EmptyString(), 0);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
csp->EnsureEventTarget(mMainThreadEventTarget);
|
|
|
|
// If there's a CSP header, apply it.
|
|
if (!cspHeaderValue.IsEmpty()) {
|
|
rv = CSP_AppendCSPFromHeader(csp, cspHeaderValue, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
// If there's a report-only CSP header, apply it.
|
|
if (!cspROHeaderValue.IsEmpty()) {
|
|
rv = CSP_AppendCSPFromHeader(csp, cspROHeaderValue, true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// Set evalAllowed, default value is set in GetAllowsEval
|
|
bool evalAllowed = false;
|
|
bool reportEvalViolations = false;
|
|
rv = csp->GetAllowsEval(&reportEvalViolations, &evalAllowed);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mLoadInfo.mCSP = csp;
|
|
mLoadInfo.mEvalAllowed = evalAllowed;
|
|
mLoadInfo.mReportCSPViolations = reportEvalViolations;
|
|
|
|
mLoadInfo.mCSPInfo = new CSPInfo();
|
|
rv = CSPToCSPInfo(csp, mLoadInfo.mCSPInfo);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void WorkerPrivate::StoreCSPOnClient() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
if (data->mClientSource && mLoadInfo.mCSPInfo) {
|
|
data->mClientSource->SetCspInfo(*mLoadInfo.mCSPInfo.get());
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UpdateReferrerInfoFromHeader(
|
|
const nsACString& aReferrerPolicyHeaderValue) {
|
|
NS_ConvertUTF8toUTF16 headerValue(aReferrerPolicyHeaderValue);
|
|
|
|
if (headerValue.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
net::ReferrerPolicy policy =
|
|
nsContentUtils::GetReferrerPolicyFromHeader(headerValue);
|
|
if (policy == net::RP_Unset) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIReferrerInfo> referrerInfo =
|
|
static_cast<ReferrerInfo*>(GetReferrerInfo())->CloneWithNewPolicy(policy);
|
|
SetReferrerInfo(referrerInfo);
|
|
}
|
|
|
|
void WorkerPrivate::Traverse(nsCycleCollectionTraversalCallback& aCb) {
|
|
AssertIsOnParentThread();
|
|
|
|
// The WorkerPrivate::mParentEventTargetRef has a reference to the exposed
|
|
// Worker object, which is really held by the worker thread. We traverse this
|
|
// reference if and only if our busy count is zero and we have not released
|
|
// the main thread reference. We do not unlink it. This allows the CC to
|
|
// break cycles involving the Worker and begin shutting it down (which does
|
|
// happen in unlink) but ensures that the WorkerPrivate won't be deleted
|
|
// before we're done shutting down the thread.
|
|
if (!mBusyCount && !mMainThreadObjectsForgotten) {
|
|
nsCycleCollectionTraversalCallback& cb = aCb;
|
|
WorkerPrivate* tmp = this;
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParentEventTargetRef);
|
|
}
|
|
}
|
|
|
|
nsresult WorkerPrivate::Dispatch(already_AddRefed<WorkerRunnable> aRunnable,
|
|
nsIEventTarget* aSyncLoopTarget) {
|
|
// May be called on any thread!
|
|
MutexAutoLock lock(mMutex);
|
|
return DispatchLockHeld(std::move(aRunnable), aSyncLoopTarget, lock);
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchLockHeld(
|
|
already_AddRefed<WorkerRunnable> aRunnable, nsIEventTarget* aSyncLoopTarget,
|
|
const MutexAutoLock& aProofOfLock) {
|
|
// May be called on any thread!
|
|
RefPtr<WorkerRunnable> runnable(aRunnable);
|
|
|
|
MOZ_ASSERT_IF(aSyncLoopTarget, mThread);
|
|
|
|
if (mStatus == Dead || (!aSyncLoopTarget && ParentStatus() > Running)) {
|
|
NS_WARNING(
|
|
"A runnable was posted to a worker that is already shutting "
|
|
"down!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
if (runnable->IsDebuggeeRunnable() && !mDebuggerReady) {
|
|
MOZ_RELEASE_ASSERT(!aSyncLoopTarget);
|
|
mDelayedDebuggeeRunnables.AppendElement(runnable);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mThread) {
|
|
if (ParentStatus() == Pending || mStatus == Pending) {
|
|
mPreStartRunnables.AppendElement(runnable);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_WARNING(
|
|
"Using a worker event target after the thread has already"
|
|
"been released!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (aSyncLoopTarget) {
|
|
rv = aSyncLoopTarget->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL);
|
|
} else {
|
|
// WorkerDebuggeeRunnables don't need any special treatment here. True,
|
|
// they should not be delivered to a frozen worker. But frozen workers
|
|
// aren't drawing from the thread's main event queue anyway, only from
|
|
// mControlQueue.
|
|
rv = mThread->DispatchAnyThread(WorkerThreadFriendKey(), runnable.forget());
|
|
}
|
|
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
mCondVar.Notify();
|
|
return NS_OK;
|
|
}
|
|
|
|
void WorkerPrivate::EnableDebugger() {
|
|
AssertIsOnParentThread();
|
|
|
|
if (NS_FAILED(RegisterWorkerDebugger(this))) {
|
|
NS_WARNING("Failed to register worker debugger!");
|
|
return;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::DisableDebugger() {
|
|
AssertIsOnParentThread();
|
|
|
|
if (NS_FAILED(UnregisterWorkerDebugger(this))) {
|
|
NS_WARNING("Failed to unregister worker debugger!");
|
|
}
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchControlRunnable(
|
|
already_AddRefed<WorkerControlRunnable> aWorkerControlRunnable) {
|
|
// May be called on any thread!
|
|
RefPtr<WorkerControlRunnable> runnable(aWorkerControlRunnable);
|
|
MOZ_ASSERT(runnable);
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mStatus == Dead) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// Transfer ownership to the control queue.
|
|
mControlQueue.Push(runnable.forget().take());
|
|
|
|
if (JSContext* cx = mJSContext) {
|
|
MOZ_ASSERT(mThread);
|
|
JS_RequestInterruptCallback(cx);
|
|
}
|
|
|
|
mCondVar.Notify();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchDebuggerRunnable(
|
|
already_AddRefed<WorkerRunnable> aDebuggerRunnable) {
|
|
// May be called on any thread!
|
|
|
|
RefPtr<WorkerRunnable> runnable(aDebuggerRunnable);
|
|
|
|
MOZ_ASSERT(runnable);
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mStatus == Dead) {
|
|
NS_WARNING(
|
|
"A debugger runnable was posted to a worker that is already "
|
|
"shutting down!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// Transfer ownership to the debugger queue.
|
|
mDebuggerQueue.Push(runnable.forget().take());
|
|
|
|
mCondVar.Notify();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<WorkerRunnable> WorkerPrivate::MaybeWrapAsWorkerRunnable(
|
|
already_AddRefed<nsIRunnable> aRunnable) {
|
|
// May be called on any thread!
|
|
|
|
nsCOMPtr<nsIRunnable> runnable(aRunnable);
|
|
MOZ_ASSERT(runnable);
|
|
|
|
RefPtr<WorkerRunnable> workerRunnable =
|
|
WorkerRunnable::FromRunnable(runnable);
|
|
if (workerRunnable) {
|
|
return workerRunnable.forget();
|
|
}
|
|
|
|
nsCOMPtr<nsICancelableRunnable> cancelable = do_QueryInterface(runnable);
|
|
if (!cancelable) {
|
|
MOZ_CRASH("All runnables destined for a worker thread must be cancelable!");
|
|
}
|
|
|
|
workerRunnable = new ExternalRunnableWrapper(this, runnable);
|
|
return workerRunnable.forget();
|
|
}
|
|
|
|
bool WorkerPrivate::Start() {
|
|
// May be called on any thread!
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
NS_ASSERTION(mParentStatus != Running, "How can this be?!");
|
|
|
|
if (mParentStatus == Pending) {
|
|
mParentStatus = Running;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// aCx is null when called from the finalizer
|
|
bool WorkerPrivate::Notify(WorkerStatus aStatus) {
|
|
AssertIsOnParentThread();
|
|
|
|
bool pending;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mParentStatus >= aStatus) {
|
|
return true;
|
|
}
|
|
|
|
pending = mParentStatus == Pending;
|
|
mParentStatus = aStatus;
|
|
}
|
|
|
|
if (pending) {
|
|
#ifdef DEBUG
|
|
{
|
|
// Fake a thread here just so that our assertions don't go off for no
|
|
// reason.
|
|
nsIThread* currentThread = NS_GetCurrentThread();
|
|
MOZ_ASSERT(currentThread);
|
|
|
|
MOZ_ASSERT(!mPRThread);
|
|
mPRThread = PRThreadFromThread(currentThread);
|
|
MOZ_ASSERT(mPRThread);
|
|
}
|
|
#endif
|
|
|
|
// Worker never got a chance to run, go ahead and delete it.
|
|
ScheduleDeletion(WorkerPrivate::WorkerNeverRan);
|
|
return true;
|
|
}
|
|
|
|
// No Canceling timeout is needed.
|
|
if (mCancelingTimer) {
|
|
mCancelingTimer->Cancel();
|
|
mCancelingTimer = nullptr;
|
|
}
|
|
|
|
RefPtr<NotifyRunnable> runnable = new NotifyRunnable(this, aStatus);
|
|
return runnable->Dispatch();
|
|
}
|
|
|
|
bool WorkerPrivate::Freeze(nsPIDOMWindowInner* aWindow) {
|
|
AssertIsOnParentThread();
|
|
|
|
mParentFrozen = true;
|
|
|
|
// WorkerDebuggeeRunnables sent from a worker to content must not be delivered
|
|
// while the worker is frozen.
|
|
//
|
|
// Since a top-level worker and all its children share the same
|
|
// mMainThreadDebuggeeEventTarget, it's sufficient to do this only in the
|
|
// top-level worker.
|
|
if (aWindow) {
|
|
// This is called from WorkerPrivate construction, and We may not have
|
|
// allocated mMainThreadDebuggeeEventTarget yet.
|
|
if (mMainThreadDebuggeeEventTarget) {
|
|
// Pausing a ThrottledEventQueue is infallible.
|
|
MOZ_ALWAYS_SUCCEEDS(mMainThreadDebuggeeEventTarget->SetIsPaused(true));
|
|
}
|
|
}
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mParentStatus >= Canceling) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
DisableDebugger();
|
|
|
|
RefPtr<FreezeRunnable> runnable = new FreezeRunnable(this);
|
|
if (!runnable->Dispatch()) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WorkerPrivate::Thaw(nsPIDOMWindowInner* aWindow) {
|
|
AssertIsOnParentThread();
|
|
MOZ_ASSERT(mParentFrozen);
|
|
|
|
mParentFrozen = false;
|
|
|
|
// Delivery of WorkerDebuggeeRunnables to the window may resume.
|
|
//
|
|
// Since a top-level worker and all its children share the same
|
|
// mMainThreadDebuggeeEventTarget, it's sufficient to do this only in the
|
|
// top-level worker.
|
|
if (aWindow) {
|
|
// Since the worker is no longer frozen, only a paused parent window should
|
|
// require the queue to remain paused.
|
|
//
|
|
// This can only fail if the ThrottledEventQueue cannot dispatch its
|
|
// executor to the main thread, in which case the main thread was never
|
|
// going to draw runnables from it anyway, so the failure doesn't matter.
|
|
Unused << mMainThreadDebuggeeEventTarget->SetIsPaused(
|
|
IsParentWindowPaused());
|
|
}
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mParentStatus >= Canceling) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
EnableDebugger();
|
|
|
|
RefPtr<ThawRunnable> runnable = new ThawRunnable(this);
|
|
if (!runnable->Dispatch()) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void WorkerPrivate::ParentWindowPaused() {
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(!mParentWindowPaused);
|
|
mParentWindowPaused = true;
|
|
|
|
// This is called from WorkerPrivate construction, and we may not have
|
|
// allocated mMainThreadDebuggeeEventTarget yet.
|
|
if (mMainThreadDebuggeeEventTarget) {
|
|
// Pausing a ThrottledEventQueue is infallible.
|
|
MOZ_ALWAYS_SUCCEEDS(mMainThreadDebuggeeEventTarget->SetIsPaused(true));
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::ParentWindowResumed() {
|
|
AssertIsOnMainThread();
|
|
|
|
MOZ_ASSERT(mParentWindowPaused);
|
|
mParentWindowPaused = false;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mParentStatus >= Canceling) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Since the window is no longer paused, the queue should only remain paused
|
|
// if the worker is frozen.
|
|
//
|
|
// This can only fail if the ThrottledEventQueue cannot dispatch its executor
|
|
// to the main thread, in which case the main thread was never going to draw
|
|
// runnables from it anyway, so the failure doesn't matter.
|
|
Unused << mMainThreadDebuggeeEventTarget->SetIsPaused(IsFrozen());
|
|
}
|
|
|
|
void WorkerPrivate::PropagateFirstPartyStorageAccessGranted() {
|
|
AssertIsOnParentThread();
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mParentStatus >= Canceling) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
RefPtr<PropagateFirstPartyStorageAccessGrantedRunnable> runnable =
|
|
new PropagateFirstPartyStorageAccessGrantedRunnable(this);
|
|
Unused << NS_WARN_IF(!runnable->Dispatch());
|
|
}
|
|
|
|
bool WorkerPrivate::Close() {
|
|
mMutex.AssertCurrentThreadOwns();
|
|
if (mParentStatus < Closing) {
|
|
mParentStatus = Closing;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WorkerPrivate::ModifyBusyCount(bool aIncrease) {
|
|
AssertIsOnParentThread();
|
|
|
|
MOZ_ASSERT(aIncrease || mBusyCount, "Mismatched busy count mods!");
|
|
|
|
if (aIncrease) {
|
|
mBusyCount++;
|
|
return true;
|
|
}
|
|
|
|
if (--mBusyCount == 0) {
|
|
bool shouldCancel;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
shouldCancel = mParentStatus == Canceling;
|
|
}
|
|
|
|
if (shouldCancel && !Cancel()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WorkerPrivate::ProxyReleaseMainThreadObjects() {
|
|
AssertIsOnParentThread();
|
|
MOZ_ASSERT(!mMainThreadObjectsForgotten);
|
|
|
|
nsCOMPtr<nsILoadGroup> loadGroupToCancel;
|
|
// If we're not overriden, then do nothing here. Let the load group get
|
|
// handled in ForgetMainThreadObjects().
|
|
if (mLoadInfo.mInterfaceRequestor) {
|
|
mLoadInfo.mLoadGroup.swap(loadGroupToCancel);
|
|
}
|
|
|
|
bool result =
|
|
mLoadInfo.ProxyReleaseMainThreadObjects(this, loadGroupToCancel);
|
|
|
|
mMainThreadObjectsForgotten = true;
|
|
|
|
return result;
|
|
}
|
|
|
|
void WorkerPrivate::UpdateContextOptions(
|
|
const JS::ContextOptions& aContextOptions) {
|
|
AssertIsOnParentThread();
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mJSSettings.contextOptions = aContextOptions;
|
|
}
|
|
|
|
RefPtr<UpdateContextOptionsRunnable> runnable =
|
|
new UpdateContextOptionsRunnable(this, aContextOptions);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to update worker context options!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UpdateLanguages(const nsTArray<nsString>& aLanguages) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<UpdateLanguagesRunnable> runnable =
|
|
new UpdateLanguagesRunnable(this, aLanguages);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to update worker languages!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UpdateJSWorkerMemoryParameter(JSGCParamKey aKey,
|
|
uint32_t aValue) {
|
|
AssertIsOnParentThread();
|
|
|
|
bool found = false;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
found = mJSSettings.ApplyGCSetting(aKey, aValue);
|
|
}
|
|
|
|
if (found) {
|
|
RefPtr<UpdateJSWorkerMemoryParameterRunnable> runnable =
|
|
new UpdateJSWorkerMemoryParameterRunnable(this, aKey, aValue);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to update memory parameter!");
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef JS_GC_ZEAL
|
|
void WorkerPrivate::UpdateGCZeal(uint8_t aGCZeal, uint32_t aFrequency) {
|
|
AssertIsOnParentThread();
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mJSSettings.gcZeal = aGCZeal;
|
|
mJSSettings.gcZealFrequency = aFrequency;
|
|
}
|
|
|
|
RefPtr<UpdateGCZealRunnable> runnable =
|
|
new UpdateGCZealRunnable(this, aGCZeal, aFrequency);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to update worker gczeal!");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void WorkerPrivate::SetLowMemoryState(bool aState) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<SetLowMemoryStateRunnable> runnable =
|
|
new SetLowMemoryStateRunnable(this, aState);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to set low memory state!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::GarbageCollect(bool aShrinking) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<GarbageCollectRunnable> runnable = new GarbageCollectRunnable(
|
|
this, aShrinking, /* collectChildren = */ true);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to GC worker!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::CycleCollect(bool aDummy) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<CycleCollectRunnable> runnable =
|
|
new CycleCollectRunnable(this, /* collectChildren = */ true);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to CC worker!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::OfflineStatusChangeEvent(bool aIsOffline) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<OfflineStatusChangeRunnable> runnable =
|
|
new OfflineStatusChangeRunnable(this, aIsOffline);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to dispatch offline status change event!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::OfflineStatusChangeEventInternal(bool aIsOffline) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// The worker is already in this state. No need to dispatch an event.
|
|
if (data->mOnLine == !aIsOffline) {
|
|
return;
|
|
}
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); ++index) {
|
|
data->mChildWorkers[index]->OfflineStatusChangeEvent(aIsOffline);
|
|
}
|
|
|
|
data->mOnLine = !aIsOffline;
|
|
WorkerGlobalScope* globalScope = GlobalScope();
|
|
RefPtr<WorkerNavigator> nav = globalScope->GetExistingNavigator();
|
|
if (nav) {
|
|
nav->SetOnLine(data->mOnLine);
|
|
}
|
|
|
|
nsString eventType;
|
|
if (aIsOffline) {
|
|
eventType.AssignLiteral("offline");
|
|
} else {
|
|
eventType.AssignLiteral("online");
|
|
}
|
|
|
|
RefPtr<Event> event = NS_NewDOMEvent(globalScope, nullptr, nullptr);
|
|
|
|
event->InitEvent(eventType, false, false);
|
|
event->SetTrusted(true);
|
|
|
|
globalScope->DispatchEvent(*event);
|
|
}
|
|
|
|
void WorkerPrivate::MemoryPressure(bool aDummy) {
|
|
AssertIsOnParentThread();
|
|
|
|
RefPtr<MemoryPressureRunnable> runnable = new MemoryPressureRunnable(this);
|
|
Unused << NS_WARN_IF(!runnable->Dispatch());
|
|
}
|
|
|
|
void WorkerPrivate::WorkerScriptLoaded() {
|
|
AssertIsOnMainThread();
|
|
|
|
if (IsSharedWorker() || IsServiceWorker()) {
|
|
// No longer need to hold references to the window or document we came from.
|
|
mLoadInfo.mWindow = nullptr;
|
|
mLoadInfo.mScriptContext = nullptr;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::SetBaseURI(nsIURI* aBaseURI) {
|
|
AssertIsOnMainThread();
|
|
|
|
if (!mLoadInfo.mBaseURI) {
|
|
NS_ASSERTION(GetParent(), "Shouldn't happen without a parent!");
|
|
mLoadInfo.mResolvedScriptURI = aBaseURI;
|
|
}
|
|
|
|
mLoadInfo.mBaseURI = aBaseURI;
|
|
|
|
if (NS_FAILED(aBaseURI->GetSpec(mLocationInfo.mHref))) {
|
|
mLocationInfo.mHref.Truncate();
|
|
}
|
|
|
|
mLocationInfo.mHostname.Truncate();
|
|
nsContentUtils::GetHostOrIPv6WithBrackets(aBaseURI, mLocationInfo.mHostname);
|
|
|
|
nsCOMPtr<nsIURL> url(do_QueryInterface(aBaseURI));
|
|
if (!url || NS_FAILED(url->GetFilePath(mLocationInfo.mPathname))) {
|
|
mLocationInfo.mPathname.Truncate();
|
|
}
|
|
|
|
nsCString temp;
|
|
|
|
if (url && NS_SUCCEEDED(url->GetQuery(temp)) && !temp.IsEmpty()) {
|
|
mLocationInfo.mSearch.Assign('?');
|
|
mLocationInfo.mSearch.Append(temp);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(aBaseURI->GetRef(temp)) && !temp.IsEmpty()) {
|
|
if (mLocationInfo.mHash.IsEmpty()) {
|
|
mLocationInfo.mHash.Assign('#');
|
|
mLocationInfo.mHash.Append(temp);
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(aBaseURI->GetScheme(mLocationInfo.mProtocol))) {
|
|
mLocationInfo.mProtocol.Append(':');
|
|
} else {
|
|
mLocationInfo.mProtocol.Truncate();
|
|
}
|
|
|
|
int32_t port;
|
|
if (NS_SUCCEEDED(aBaseURI->GetPort(&port)) && port != -1) {
|
|
mLocationInfo.mPort.AppendInt(port);
|
|
|
|
nsAutoCString host(mLocationInfo.mHostname);
|
|
host.Append(':');
|
|
host.Append(mLocationInfo.mPort);
|
|
|
|
mLocationInfo.mHost.Assign(host);
|
|
} else {
|
|
mLocationInfo.mHost.Assign(mLocationInfo.mHostname);
|
|
}
|
|
|
|
nsContentUtils::GetUTFOrigin(aBaseURI, mLocationInfo.mOrigin);
|
|
}
|
|
|
|
nsresult WorkerPrivate::SetPrincipalsAndCSPOnMainThread(
|
|
nsIPrincipal* aPrincipal, nsIPrincipal* aStoragePrincipal,
|
|
nsILoadGroup* aLoadGroup, nsIContentSecurityPolicy* aCsp) {
|
|
return mLoadInfo.SetPrincipalsAndCSPOnMainThread(
|
|
aPrincipal, aStoragePrincipal, aLoadGroup, aCsp);
|
|
}
|
|
|
|
nsresult WorkerPrivate::SetPrincipalsAndCSPFromChannel(nsIChannel* aChannel) {
|
|
return mLoadInfo.SetPrincipalsAndCSPFromChannel(aChannel);
|
|
}
|
|
|
|
bool WorkerPrivate::FinalChannelPrincipalIsValid(nsIChannel* aChannel) {
|
|
return mLoadInfo.FinalChannelPrincipalIsValid(aChannel);
|
|
}
|
|
|
|
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
|
|
bool WorkerPrivate::PrincipalURIMatchesScriptURL() {
|
|
return mLoadInfo.PrincipalURIMatchesScriptURL();
|
|
}
|
|
#endif
|
|
|
|
void WorkerPrivate::UpdateOverridenLoadGroup(nsILoadGroup* aBaseLoadGroup) {
|
|
AssertIsOnMainThread();
|
|
|
|
// The load group should have been overriden at init time.
|
|
mLoadInfo.mInterfaceRequestor->MaybeAddBrowserChild(aBaseLoadGroup);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
void WorkerPrivate::AssertIsOnParentThread() const {
|
|
if (GetParent()) {
|
|
GetParent()->AssertIsOnWorkerThread();
|
|
} else {
|
|
AssertIsOnMainThread();
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::AssertInnerWindowIsCorrect() const {
|
|
AssertIsOnParentThread();
|
|
|
|
// Only care about top level workers from windows.
|
|
if (mParent || !mLoadInfo.mWindow) {
|
|
return;
|
|
}
|
|
|
|
AssertIsOnMainThread();
|
|
|
|
nsPIDOMWindowOuter* outer = mLoadInfo.mWindow->GetOuterWindow();
|
|
NS_ASSERTION(outer && outer->GetCurrentInnerWindow() == mLoadInfo.mWindow,
|
|
"Inner window no longer correct!");
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
|
|
bool WorkerPrivate::PrincipalIsValid() const {
|
|
return mLoadInfo.PrincipalIsValid();
|
|
}
|
|
#endif
|
|
|
|
WorkerPrivate::WorkerThreadAccessible::WorkerThreadAccessible(
|
|
WorkerPrivate* const aParent)
|
|
: mNumHoldersPreventingShutdownStart(0),
|
|
mDebuggerEventLoopLevel(0),
|
|
mErrorHandlerRecursionCount(0),
|
|
mNextTimeoutId(1),
|
|
mFrozen(false),
|
|
mTimerRunning(false),
|
|
mRunningExpiredTimeouts(false),
|
|
mPeriodicGCTimerRunning(false),
|
|
mIdleGCTimerRunning(false),
|
|
mOnLine(aParent ? aParent->OnLine() : !NS_IsOffline()) {}
|
|
|
|
namespace {
|
|
|
|
bool IsNewWorkerSecureContext(const WorkerPrivate* const aParent,
|
|
const WorkerType aWorkerType,
|
|
const WorkerLoadInfo& aLoadInfo) {
|
|
if (aParent) {
|
|
return aParent->IsSecureContext();
|
|
}
|
|
|
|
// Our secure context state depends on the kind of worker we have.
|
|
|
|
if (aLoadInfo.mPrincipalIsSystem) {
|
|
return true;
|
|
}
|
|
|
|
if (aWorkerType == WorkerTypeService) {
|
|
return true;
|
|
}
|
|
|
|
if (aLoadInfo.mSecureContext != WorkerLoadInfo::eNotSet) {
|
|
return aLoadInfo.mSecureContext == WorkerLoadInfo::eSecureContext;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"non-chrome worker that is not a service worker "
|
|
"that has no parent and no associated window");
|
|
|
|
return false;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
WorkerPrivate::WorkerPrivate(WorkerPrivate* aParent,
|
|
const nsAString& aScriptURL, bool aIsChromeWorker,
|
|
WorkerType aWorkerType,
|
|
const nsAString& aWorkerName,
|
|
const nsACString& aServiceWorkerScope,
|
|
WorkerLoadInfo& aLoadInfo)
|
|
: mMutex("WorkerPrivate Mutex"),
|
|
mCondVar(mMutex, "WorkerPrivate CondVar"),
|
|
mParent(aParent),
|
|
mScriptURL(aScriptURL),
|
|
mWorkerName(aWorkerName),
|
|
mWorkerType(aWorkerType),
|
|
mLoadInfo(std::move(aLoadInfo)),
|
|
mDebugger(nullptr),
|
|
mJSContext(nullptr),
|
|
mPRThread(nullptr),
|
|
mWorkerControlEventTarget(new WorkerEventTarget(
|
|
this, WorkerEventTarget::Behavior::ControlOnly)),
|
|
mWorkerHybridEventTarget(
|
|
new WorkerEventTarget(this, WorkerEventTarget::Behavior::Hybrid)),
|
|
mParentStatus(Pending),
|
|
mStatus(Pending),
|
|
mBusyCount(0),
|
|
mLoadingWorkerScript(false),
|
|
mCreationTimeStamp(TimeStamp::Now()),
|
|
mCreationTimeHighRes((double)PR_Now() / PR_USEC_PER_MSEC),
|
|
mWorkerThreadAccessible(aParent),
|
|
mPostSyncLoopOperations(0),
|
|
mParentWindowPaused(false),
|
|
mCancelAllPendingRunnables(false),
|
|
mWorkerScriptExecutedSuccessfully(false),
|
|
mFetchHandlerWasAdded(false),
|
|
mMainThreadObjectsForgotten(false),
|
|
mIsChromeWorker(aIsChromeWorker),
|
|
mParentFrozen(false),
|
|
mIsSecureContext(
|
|
IsNewWorkerSecureContext(mParent, mWorkerType, mLoadInfo)),
|
|
mDebuggerRegistered(false),
|
|
mDebuggerReady(true),
|
|
mIsInAutomation(false),
|
|
mPerformanceCounter(nullptr) {
|
|
MOZ_ASSERT_IF(!IsDedicatedWorker(), NS_IsMainThread());
|
|
|
|
if (aParent) {
|
|
aParent->AssertIsOnWorkerThread();
|
|
|
|
// Note that this copies our parent's secure context state into mJSSettings.
|
|
aParent->CopyJSSettings(mJSSettings);
|
|
|
|
MOZ_ASSERT_IF(mIsChromeWorker, mIsSecureContext);
|
|
|
|
mIsInAutomation = aParent->IsInAutomation();
|
|
|
|
MOZ_ASSERT(IsDedicatedWorker());
|
|
|
|
if (aParent->mParentFrozen) {
|
|
Freeze(nullptr);
|
|
}
|
|
} else {
|
|
AssertIsOnMainThread();
|
|
|
|
RuntimeService::GetDefaultJSSettings(mJSSettings);
|
|
|
|
mJSSettings.chrome.realmOptions.creationOptions().setClampAndJitterTime(
|
|
!UsesSystemPrincipal());
|
|
mJSSettings.content.realmOptions.creationOptions().setClampAndJitterTime(
|
|
!UsesSystemPrincipal());
|
|
|
|
if (mIsSecureContext) {
|
|
mJSSettings.chrome.realmOptions.creationOptions().setSecureContext(true);
|
|
mJSSettings.content.realmOptions.creationOptions().setSecureContext(true);
|
|
}
|
|
|
|
mIsInAutomation = xpc::IsInAutomation();
|
|
|
|
// Our parent can get suspended after it initiates the async creation
|
|
// of a new worker thread. In this case suspend the new worker as well.
|
|
if (mLoadInfo.mWindow && mLoadInfo.mWindow->IsSuspended()) {
|
|
ParentWindowPaused();
|
|
}
|
|
|
|
if (mLoadInfo.mWindow && mLoadInfo.mWindow->IsFrozen()) {
|
|
Freeze(mLoadInfo.mWindow);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsISerialEventTarget> target;
|
|
|
|
// A child worker just inherits the parent workers ThrottledEventQueue
|
|
// and main thread target for now. This is mainly due to the restriction
|
|
// that ThrottledEventQueue can only be created on the main thread at the
|
|
// moment.
|
|
if (aParent) {
|
|
mMainThreadEventTargetForMessaging =
|
|
aParent->mMainThreadEventTargetForMessaging;
|
|
mMainThreadEventTarget = aParent->mMainThreadEventTarget;
|
|
mMainThreadDebuggeeEventTarget = aParent->mMainThreadDebuggeeEventTarget;
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
target =
|
|
GetWindow() ? GetWindow()->EventTargetFor(TaskCategory::Worker) : nullptr;
|
|
|
|
if (!target) {
|
|
target = GetMainThreadSerialEventTarget();
|
|
MOZ_DIAGNOSTIC_ASSERT(target);
|
|
}
|
|
|
|
// Throttle events to the main thread using a ThrottledEventQueue specific to
|
|
// this tree of worker threads.
|
|
mMainThreadEventTargetForMessaging =
|
|
ThrottledEventQueue::Create(target, "Worker queue for messaging");
|
|
if (StaticPrefs::dom_worker_use_medium_high_event_queue()) {
|
|
mMainThreadEventTarget = ThrottledEventQueue::Create(
|
|
GetMainThreadSerialEventTarget(), "Worker queue",
|
|
nsIRunnablePriority::PRIORITY_MEDIUMHIGH);
|
|
} else {
|
|
mMainThreadEventTarget = mMainThreadEventTargetForMessaging;
|
|
}
|
|
mMainThreadDebuggeeEventTarget =
|
|
ThrottledEventQueue::Create(target, "Worker debuggee queue");
|
|
if (IsParentWindowPaused() || IsFrozen()) {
|
|
MOZ_ALWAYS_SUCCEEDS(mMainThreadDebuggeeEventTarget->SetIsPaused(true));
|
|
}
|
|
}
|
|
|
|
WorkerPrivate::~WorkerPrivate() {
|
|
DropJSObjects(this);
|
|
|
|
mWorkerControlEventTarget->ForgetWorkerPrivate(this);
|
|
|
|
// We force the hybrid event target to forget the thread when we
|
|
// enter the Killing state, but we do it again here to be safe.
|
|
// Its possible that we may be created and destroyed without progressing
|
|
// to Killing via some obscure code path.
|
|
mWorkerHybridEventTarget->ForgetWorkerPrivate(this);
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<WorkerPrivate> WorkerPrivate::Constructor(
|
|
JSContext* aCx, const nsAString& aScriptURL, bool aIsChromeWorker,
|
|
WorkerType aWorkerType, const nsAString& aWorkerName,
|
|
const nsACString& aServiceWorkerScope, WorkerLoadInfo* aLoadInfo,
|
|
ErrorResult& aRv) {
|
|
WorkerPrivate* parent =
|
|
NS_IsMainThread() ? nullptr : GetCurrentThreadWorkerPrivate();
|
|
|
|
// If this is a sub-worker, we need to keep the parent worker alive until this
|
|
// one is registered.
|
|
RefPtr<StrongWorkerRef> workerRef;
|
|
if (parent) {
|
|
parent->AssertIsOnWorkerThread();
|
|
|
|
workerRef = StrongWorkerRef::Create(parent, "WorkerPrivate::Constructor");
|
|
if (NS_WARN_IF(!workerRef)) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
AssertIsOnMainThread();
|
|
}
|
|
|
|
Maybe<WorkerLoadInfo> stackLoadInfo;
|
|
if (!aLoadInfo) {
|
|
stackLoadInfo.emplace();
|
|
|
|
nsresult rv =
|
|
GetLoadInfo(aCx, nullptr, parent, aScriptURL, aIsChromeWorker,
|
|
InheritLoadGroup, aWorkerType, stackLoadInfo.ptr());
|
|
aRv.MightThrowJSException();
|
|
if (NS_FAILED(rv)) {
|
|
workerinternals::ReportLoadError(aRv, rv, aScriptURL);
|
|
return nullptr;
|
|
}
|
|
|
|
aLoadInfo = stackLoadInfo.ptr();
|
|
}
|
|
|
|
// NB: This has to be done before creating the WorkerPrivate, because it will
|
|
// attempt to use static variables that are initialized in the RuntimeService
|
|
// constructor.
|
|
RuntimeService* runtimeService;
|
|
|
|
if (!parent) {
|
|
runtimeService = RuntimeService::GetOrCreateService();
|
|
if (!runtimeService) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
runtimeService = RuntimeService::GetService();
|
|
}
|
|
|
|
MOZ_ASSERT(runtimeService);
|
|
|
|
RefPtr<WorkerPrivate> worker =
|
|
new WorkerPrivate(parent, aScriptURL, aIsChromeWorker, aWorkerType,
|
|
aWorkerName, aServiceWorkerScope, *aLoadInfo);
|
|
|
|
// Gecko contexts always have an explicitly-set default locale (set by
|
|
// XPJSRuntime::Initialize for the main thread, set by
|
|
// WorkerThreadPrimaryRunnable::Run for workers just before running worker
|
|
// code), so this is never SpiderMonkey's builtin default locale.
|
|
JS::UniqueChars defaultLocale = JS_GetDefaultLocale(aCx);
|
|
if (NS_WARN_IF(!defaultLocale)) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return nullptr;
|
|
}
|
|
|
|
worker->mDefaultLocale = std::move(defaultLocale);
|
|
|
|
if (!runtimeService->RegisterWorker(worker)) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return nullptr;
|
|
}
|
|
|
|
worker->EnableDebugger();
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(worker->PrincipalIsValid());
|
|
|
|
UniquePtr<SerializedStackHolder> stack;
|
|
if (worker->IsWatchedByDevtools()) {
|
|
stack = GetCurrentStackForNetMonitor(aCx);
|
|
}
|
|
|
|
RefPtr<CompileScriptRunnable> compiler =
|
|
new CompileScriptRunnable(worker, std::move(stack), aScriptURL);
|
|
if (!compiler->Dispatch()) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return nullptr;
|
|
}
|
|
|
|
worker->mSelfRef = worker;
|
|
|
|
return worker.forget();
|
|
}
|
|
|
|
nsresult WorkerPrivate::SetIsDebuggerReady(bool aReady) {
|
|
AssertIsOnParentThread();
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mDebuggerReady == aReady) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aReady && mDebuggerRegistered) {
|
|
// The debugger can only be marked as not ready during registration.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mDebuggerReady = aReady;
|
|
|
|
if (aReady && mDebuggerRegistered) {
|
|
// Dispatch all the delayed runnables without releasing the lock, to ensure
|
|
// that the order in which debuggee runnables execute is the same as the
|
|
// order in which they were originally dispatched.
|
|
auto pending = std::move(mDelayedDebuggeeRunnables);
|
|
for (uint32_t i = 0; i < pending.Length(); i++) {
|
|
RefPtr<WorkerRunnable> runnable = pending[i].forget();
|
|
nsresult rv = DispatchLockHeld(runnable.forget(), nullptr, lock);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
MOZ_RELEASE_ASSERT(mDelayedDebuggeeRunnables.IsEmpty());
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult WorkerPrivate::GetLoadInfo(JSContext* aCx, nsPIDOMWindowInner* aWindow,
|
|
WorkerPrivate* aParent,
|
|
const nsAString& aScriptURL,
|
|
bool aIsChromeWorker,
|
|
LoadGroupBehavior aLoadGroupBehavior,
|
|
WorkerType aWorkerType,
|
|
WorkerLoadInfo* aLoadInfo) {
|
|
using namespace mozilla::dom::workerinternals;
|
|
|
|
MOZ_ASSERT(aCx);
|
|
MOZ_ASSERT_IF(NS_IsMainThread(),
|
|
aCx == nsContentUtils::GetCurrentJSContext());
|
|
|
|
if (aWindow) {
|
|
AssertIsOnMainThread();
|
|
}
|
|
|
|
WorkerLoadInfo loadInfo;
|
|
nsresult rv;
|
|
|
|
if (aParent) {
|
|
aParent->AssertIsOnWorkerThread();
|
|
|
|
// If the parent is going away give up now.
|
|
WorkerStatus parentStatus;
|
|
{
|
|
MutexAutoLock lock(aParent->mMutex);
|
|
parentStatus = aParent->mStatus;
|
|
}
|
|
|
|
if (parentStatus > Running) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Passing a pointer to our stack loadInfo is safe here because this
|
|
// method uses a sync runnable to get the channel from the main thread.
|
|
rv = ChannelFromScriptURLWorkerThread(aCx, aParent, aScriptURL, loadInfo);
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ALWAYS_TRUE(loadInfo.ProxyReleaseMainThreadObjects(aParent));
|
|
return rv;
|
|
}
|
|
|
|
// Now that we've spun the loop there's no guarantee that our parent is
|
|
// still alive. We may have received control messages initiating shutdown.
|
|
{
|
|
MutexAutoLock lock(aParent->mMutex);
|
|
parentStatus = aParent->mStatus;
|
|
}
|
|
|
|
if (parentStatus > Running) {
|
|
MOZ_ALWAYS_TRUE(loadInfo.ProxyReleaseMainThreadObjects(aParent));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
loadInfo.mDomain = aParent->Domain();
|
|
loadInfo.mFromWindow = aParent->IsFromWindow();
|
|
loadInfo.mWindowID = aParent->WindowID();
|
|
loadInfo.mStorageAccess = aParent->StorageAccess();
|
|
loadInfo.mOriginAttributes = aParent->GetOriginAttributes();
|
|
loadInfo.mServiceWorkersTestingInWindow =
|
|
aParent->ServiceWorkersTestingInWindow();
|
|
loadInfo.mParentController = aParent->GetController();
|
|
loadInfo.mWatchedByDevtools = aParent->IsWatchedByDevtools();
|
|
} else {
|
|
AssertIsOnMainThread();
|
|
|
|
// Make sure that the IndexedDatabaseManager is set up
|
|
Unused << NS_WARN_IF(!IndexedDatabaseManager::GetOrCreate());
|
|
|
|
nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
|
|
MOZ_ASSERT(ssm);
|
|
|
|
bool isChrome = nsContentUtils::IsSystemCaller(aCx);
|
|
|
|
// First check to make sure the caller has permission to make a privileged
|
|
// worker if they called the ChromeWorker/ChromeSharedWorker constructor.
|
|
if (aIsChromeWorker && !isChrome) {
|
|
return NS_ERROR_DOM_SECURITY_ERR;
|
|
}
|
|
|
|
// Chrome callers (whether creating a ChromeWorker or Worker) always get the
|
|
// system principal here as they're allowed to load anything. The script
|
|
// loader will refuse to run any script that does not also have the system
|
|
// principal.
|
|
if (isChrome) {
|
|
rv = ssm->GetSystemPrincipal(getter_AddRefs(loadInfo.mLoadingPrincipal));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
loadInfo.mPrincipalIsSystem = true;
|
|
}
|
|
|
|
// See if we're being called from a window.
|
|
nsCOMPtr<nsPIDOMWindowInner> globalWindow = aWindow;
|
|
if (!globalWindow) {
|
|
globalWindow = xpc::CurrentWindowOrNull(aCx);
|
|
}
|
|
|
|
nsCOMPtr<Document> document;
|
|
Maybe<ClientInfo> clientInfo;
|
|
|
|
if (globalWindow) {
|
|
// Only use the current inner window, and only use it if the caller can
|
|
// access it.
|
|
if (nsPIDOMWindowOuter* outerWindow = globalWindow->GetOuterWindow()) {
|
|
loadInfo.mWindow = outerWindow->GetCurrentInnerWindow();
|
|
// TODO: fix this for SharedWorkers with multiple documents (bug
|
|
// 1177935)
|
|
loadInfo.mServiceWorkersTestingInWindow =
|
|
outerWindow->GetServiceWorkersTestingEnabled();
|
|
}
|
|
|
|
if (!loadInfo.mWindow ||
|
|
(globalWindow != loadInfo.mWindow &&
|
|
!nsContentUtils::CanCallerAccess(loadInfo.mWindow))) {
|
|
return NS_ERROR_DOM_SECURITY_ERR;
|
|
}
|
|
|
|
nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(loadInfo.mWindow);
|
|
MOZ_ASSERT(sgo);
|
|
|
|
loadInfo.mScriptContext = sgo->GetContext();
|
|
NS_ENSURE_TRUE(loadInfo.mScriptContext, NS_ERROR_FAILURE);
|
|
|
|
// If we're called from a window then we can dig out the principal and URI
|
|
// from the document.
|
|
document = loadInfo.mWindow->GetExtantDoc();
|
|
NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
|
|
|
|
loadInfo.mBaseURI = document->GetDocBaseURI();
|
|
loadInfo.mLoadGroup = document->GetDocumentLoadGroup();
|
|
NS_ENSURE_TRUE(loadInfo.mLoadGroup, NS_ERROR_FAILURE);
|
|
|
|
clientInfo = globalWindow->GetClientInfo();
|
|
|
|
// Use the document's NodePrincipal as loading principal if we're not
|
|
// being called from chrome.
|
|
if (!loadInfo.mLoadingPrincipal) {
|
|
loadInfo.mLoadingPrincipal = document->NodePrincipal();
|
|
NS_ENSURE_TRUE(loadInfo.mLoadingPrincipal, NS_ERROR_FAILURE);
|
|
|
|
// We use the document's base domain to limit the number of workers
|
|
// each domain can create. For sandboxed documents, we use the domain
|
|
// of their first non-sandboxed document, walking up until we find
|
|
// one. If we can't find one, we fall back to using the GUID of the
|
|
// null principal as the base domain.
|
|
if (document->GetSandboxFlags() & SANDBOXED_ORIGIN) {
|
|
nsCOMPtr<Document> tmpDoc = document;
|
|
do {
|
|
tmpDoc = tmpDoc->GetParentDocument();
|
|
} while (tmpDoc && tmpDoc->GetSandboxFlags() & SANDBOXED_ORIGIN);
|
|
|
|
if (tmpDoc) {
|
|
// There was an unsandboxed ancestor, yay!
|
|
nsCOMPtr<nsIPrincipal> tmpPrincipal = tmpDoc->NodePrincipal();
|
|
rv = tmpPrincipal->GetBaseDomain(loadInfo.mDomain);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
// No unsandboxed ancestor, use our GUID.
|
|
rv = loadInfo.mLoadingPrincipal->GetBaseDomain(loadInfo.mDomain);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
} else {
|
|
// Document creating the worker is not sandboxed.
|
|
rv = loadInfo.mLoadingPrincipal->GetBaseDomain(loadInfo.mDomain);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
NS_ENSURE_TRUE(NS_LoadGroupMatchesPrincipal(loadInfo.mLoadGroup,
|
|
loadInfo.mLoadingPrincipal),
|
|
NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsIPermissionManager> permMgr =
|
|
do_GetService(NS_PERMISSIONMANAGER_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t perm;
|
|
rv = permMgr->TestPermissionFromPrincipal(
|
|
loadInfo.mLoadingPrincipal, NS_LITERAL_CSTRING("systemXHR"), &perm);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
loadInfo.mXHRParamsAllowed = perm == nsIPermissionManager::ALLOW_ACTION;
|
|
|
|
nsIDocShell* docShell = globalWindow->GetDocShell();
|
|
if (docShell) {
|
|
loadInfo.mWatchedByDevtools = docShell->GetWatchedByDevtools();
|
|
}
|
|
|
|
loadInfo.mReferrerInfo =
|
|
ReferrerInfo::CreateForFetch(loadInfo.mLoadingPrincipal, document);
|
|
loadInfo.mFromWindow = true;
|
|
loadInfo.mWindowID = globalWindow->WindowID();
|
|
loadInfo.mStorageAccess = StorageAllowedForWindow(globalWindow);
|
|
loadInfo.mCookieSettings = document->CookieSettings();
|
|
loadInfo.mOriginAttributes =
|
|
nsContentUtils::GetOriginAttributes(document);
|
|
loadInfo.mParentController = globalWindow->GetController();
|
|
loadInfo.mSecureContext = loadInfo.mWindow->IsSecureContext()
|
|
? WorkerLoadInfo::eSecureContext
|
|
: WorkerLoadInfo::eInsecureContext;
|
|
} else {
|
|
// Not a window
|
|
MOZ_ASSERT(isChrome);
|
|
|
|
// We're being created outside of a window. Need to figure out the script
|
|
// that is creating us in order for us to use relative URIs later on.
|
|
JS::AutoFilename fileName;
|
|
if (JS::DescribeScriptedCaller(aCx, &fileName)) {
|
|
// In most cases, fileName is URI. In a few other cases
|
|
// (e.g. xpcshell), fileName is a file path. Ideally, we would
|
|
// prefer testing whether fileName parses as an URI and fallback
|
|
// to file path in case of error, but Windows file paths have
|
|
// the interesting property that they can be parsed as bogus
|
|
// URIs (e.g. C:/Windows/Tmp is interpreted as scheme "C",
|
|
// hostname "Windows", path "Tmp"), which defeats this algorithm.
|
|
// Therefore, we adopt the opposite convention.
|
|
nsCOMPtr<nsIFile> scriptFile =
|
|
do_CreateInstance("@mozilla.org/file/local;1", &rv);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
rv = scriptFile->InitWithPath(NS_ConvertUTF8toUTF16(fileName.get()));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = NS_NewFileURI(getter_AddRefs(loadInfo.mBaseURI), scriptFile);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
// As expected, fileName is not a path, so proceed with
|
|
// a uri.
|
|
rv = NS_NewURI(getter_AddRefs(loadInfo.mBaseURI), fileName.get());
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
loadInfo.mXHRParamsAllowed = true;
|
|
loadInfo.mFromWindow = false;
|
|
loadInfo.mWindowID = UINT64_MAX;
|
|
loadInfo.mStorageAccess = StorageAccess::eAllow;
|
|
loadInfo.mCookieSettings = mozilla::net::CookieSettings::Create();
|
|
MOZ_ASSERT(loadInfo.mCookieSettings);
|
|
|
|
loadInfo.mOriginAttributes = OriginAttributes();
|
|
}
|
|
|
|
MOZ_ASSERT(loadInfo.mLoadingPrincipal);
|
|
MOZ_ASSERT(isChrome || !loadInfo.mDomain.IsEmpty());
|
|
|
|
if (!loadInfo.mLoadGroup || aLoadGroupBehavior == OverrideLoadGroup) {
|
|
OverrideLoadInfoLoadGroup(loadInfo, loadInfo.mLoadingPrincipal);
|
|
}
|
|
MOZ_ASSERT(NS_LoadGroupMatchesPrincipal(loadInfo.mLoadGroup,
|
|
loadInfo.mLoadingPrincipal));
|
|
|
|
// Top level workers' main script use the document charset for the script
|
|
// uri encoding.
|
|
nsCOMPtr<nsIURI> url;
|
|
rv = nsContentUtils::NewURIWithDocumentCharset(
|
|
getter_AddRefs(url), aScriptURL, document, loadInfo.mBaseURI);
|
|
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_SYNTAX_ERR);
|
|
|
|
rv = ChannelFromScriptURLMainThread(
|
|
loadInfo.mLoadingPrincipal, document, loadInfo.mLoadGroup, url,
|
|
clientInfo, ContentPolicyType(aWorkerType), loadInfo.mCookieSettings,
|
|
loadInfo.mReferrerInfo, getter_AddRefs(loadInfo.mChannel));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = NS_GetFinalChannelURI(loadInfo.mChannel,
|
|
getter_AddRefs(loadInfo.mResolvedScriptURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = loadInfo.SetPrincipalsAndCSPFromChannel(loadInfo.mChannel);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(loadInfo.mLoadingPrincipal);
|
|
MOZ_DIAGNOSTIC_ASSERT(loadInfo.PrincipalIsValid());
|
|
|
|
*aLoadInfo = std::move(loadInfo);
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void WorkerPrivate::OverrideLoadInfoLoadGroup(WorkerLoadInfo& aLoadInfo,
|
|
nsIPrincipal* aPrincipal) {
|
|
MOZ_ASSERT(!aLoadInfo.mInterfaceRequestor);
|
|
MOZ_ASSERT(aLoadInfo.mLoadingPrincipal == aPrincipal);
|
|
|
|
aLoadInfo.mInterfaceRequestor =
|
|
new WorkerLoadInfo::InterfaceRequestor(aPrincipal, aLoadInfo.mLoadGroup);
|
|
aLoadInfo.mInterfaceRequestor->MaybeAddBrowserChild(aLoadInfo.mLoadGroup);
|
|
|
|
// NOTE: this defaults the load context to:
|
|
// - private browsing = false
|
|
// - content = true
|
|
// - use remote tabs = false
|
|
nsCOMPtr<nsILoadGroup> loadGroup = do_CreateInstance(NS_LOADGROUP_CONTRACTID);
|
|
|
|
nsresult rv =
|
|
loadGroup->SetNotificationCallbacks(aLoadInfo.mInterfaceRequestor);
|
|
MOZ_ALWAYS_SUCCEEDS(rv);
|
|
|
|
aLoadInfo.mLoadGroup = loadGroup.forget();
|
|
|
|
MOZ_ASSERT(NS_LoadGroupMatchesPrincipal(aLoadInfo.mLoadGroup, aPrincipal));
|
|
}
|
|
|
|
void WorkerPrivate::DoRunLoop(JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(mThread);
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mJSContext = aCx;
|
|
|
|
MOZ_ASSERT(mStatus == Pending);
|
|
mStatus = Running;
|
|
}
|
|
|
|
// Now that we've done that, we can go ahead and set up our AutoJSAPI. We
|
|
// can't before this point, because it can't find the right JSContext before
|
|
// then, since it gets it from our mJSContext.
|
|
AutoJSAPI jsapi;
|
|
jsapi.Init();
|
|
MOZ_ASSERT(jsapi.cx() == aCx);
|
|
|
|
EnableMemoryReporter();
|
|
|
|
InitializeGCTimers();
|
|
|
|
for (;;) {
|
|
WorkerStatus currentStatus;
|
|
bool debuggerRunnablesPending = false;
|
|
bool normalRunnablesPending = false;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
// Wait for a runnable to arrive that we can execute, or for it to be okay
|
|
// to shutdown this worker once all holders have been removed.
|
|
// Holders may be removed from inside normal runnables, but we don't check
|
|
// for that after processing normal runnables, so we need to let control
|
|
// flow to the shutdown logic without blocking.
|
|
while (mControlQueue.IsEmpty() &&
|
|
!(debuggerRunnablesPending = !mDebuggerQueue.IsEmpty()) &&
|
|
!(normalRunnablesPending = NS_HasPendingEvents(mThread)) &&
|
|
!(mStatus != Running && !HasActiveHolders())) {
|
|
WaitForWorkerEvents();
|
|
}
|
|
|
|
auto result = ProcessAllControlRunnablesLocked();
|
|
if (result != ProcessAllControlRunnablesResult::Nothing) {
|
|
// NB: There's no JS on the stack here, so Abort vs MayContinue is
|
|
// irrelevant
|
|
|
|
// The state of the world may have changed, recheck it.
|
|
normalRunnablesPending = NS_HasPendingEvents(mThread);
|
|
// The debugger queue doesn't get cleared, so we can ignore that.
|
|
}
|
|
|
|
currentStatus = mStatus;
|
|
}
|
|
|
|
// if all holders are done then we can kill this thread.
|
|
if (currentStatus != Running && !HasActiveHolders()) {
|
|
// Now we are ready to kill the worker thread.
|
|
if (currentStatus == Canceling) {
|
|
NotifyInternal(Killing);
|
|
|
|
#ifdef DEBUG
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
currentStatus = mStatus;
|
|
}
|
|
MOZ_ASSERT(currentStatus == Killing);
|
|
#else
|
|
currentStatus = Killing;
|
|
#endif
|
|
}
|
|
|
|
// If we're supposed to die then we should exit the loop.
|
|
if (currentStatus == Killing) {
|
|
// The ClientSource should be cleared in NotifyInternal() when we reach
|
|
// or pass Canceling.
|
|
MOZ_DIAGNOSTIC_ASSERT(!data->mClientSource);
|
|
|
|
// Flush uncaught rejections immediately, without
|
|
// waiting for a next tick.
|
|
PromiseDebugging::FlushUncaughtRejections();
|
|
|
|
ShutdownGCTimers();
|
|
|
|
DisableMemoryReporter();
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
mStatus = Dead;
|
|
mJSContext = nullptr;
|
|
}
|
|
|
|
// After mStatus is set to Dead there can be no more
|
|
// WorkerControlRunnables so no need to lock here.
|
|
if (!mControlQueue.IsEmpty()) {
|
|
WorkerControlRunnable* runnable = nullptr;
|
|
while (mControlQueue.Pop(runnable)) {
|
|
runnable->Cancel();
|
|
runnable->Release();
|
|
}
|
|
}
|
|
|
|
// Unroot the globals
|
|
data->mScope = nullptr;
|
|
data->mDebuggerScope = nullptr;
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (debuggerRunnablesPending || normalRunnablesPending) {
|
|
// Start the periodic GC timer if it is not already running.
|
|
SetGCTimerMode(PeriodicTimer);
|
|
}
|
|
|
|
if (debuggerRunnablesPending) {
|
|
WorkerRunnable* runnable = nullptr;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
mDebuggerQueue.Pop(runnable);
|
|
debuggerRunnablesPending = !mDebuggerQueue.IsEmpty();
|
|
}
|
|
|
|
MOZ_ASSERT(runnable);
|
|
static_cast<nsIRunnable*>(runnable)->Run();
|
|
runnable->Release();
|
|
|
|
CycleCollectedJSContext* ccjs = CycleCollectedJSContext::Get();
|
|
ccjs->PerformDebuggerMicroTaskCheckpoint();
|
|
|
|
if (debuggerRunnablesPending) {
|
|
WorkerDebuggerGlobalScope* globalScope = DebuggerGlobalScope();
|
|
MOZ_ASSERT(globalScope);
|
|
|
|
// Now *might* be a good time to GC. Let the JS engine make the
|
|
// decision.
|
|
JSAutoRealm ar(aCx, globalScope->GetGlobalJSObject());
|
|
JS_MaybeGC(aCx);
|
|
}
|
|
} else if (normalRunnablesPending) {
|
|
// Process a single runnable from the main queue.
|
|
NS_ProcessNextEvent(mThread, false);
|
|
|
|
normalRunnablesPending = NS_HasPendingEvents(mThread);
|
|
if (normalRunnablesPending && GlobalScope()) {
|
|
// Now *might* be a good time to GC. Let the JS engine make the
|
|
// decision.
|
|
JSAutoRealm ar(aCx, GlobalScope()->GetGlobalJSObject());
|
|
JS_MaybeGC(aCx);
|
|
}
|
|
}
|
|
|
|
if (!debuggerRunnablesPending && !normalRunnablesPending) {
|
|
// Both the debugger event queue and the normal event queue has been
|
|
// exhausted, cancel the periodic GC timer and schedule the idle GC timer.
|
|
SetGCTimerMode(IdleTimer);
|
|
}
|
|
|
|
// If the worker thread is spamming the main thread faster than it can
|
|
// process the work, then pause the worker thread until the main thread
|
|
// catches up.
|
|
size_t queuedEvents = mMainThreadEventTargetForMessaging->Length() +
|
|
mMainThreadDebuggeeEventTarget->Length();
|
|
if (queuedEvents > 5000) {
|
|
// Note, postMessage uses mMainThreadDebuggeeEventTarget!
|
|
mMainThreadDebuggeeEventTarget->AwaitIdle();
|
|
}
|
|
}
|
|
|
|
MOZ_CRASH("Shouldn't get here!");
|
|
}
|
|
|
|
void WorkerPrivate::OnProcessNextEvent() {
|
|
AssertIsOnWorkerThread();
|
|
|
|
uint32_t recursionDepth = CycleCollectedJSContext::Get()->RecursionDepth();
|
|
MOZ_ASSERT(recursionDepth);
|
|
|
|
// Normally we process control runnables in DoRunLoop or RunCurrentSyncLoop.
|
|
// However, it's possible that non-worker C++ could spin its own nested event
|
|
// loop, and in that case we must ensure that we continue to process control
|
|
// runnables here.
|
|
if (recursionDepth > 1 && mSyncLoopStack.Length() < recursionDepth - 1) {
|
|
Unused << ProcessAllControlRunnables();
|
|
// There's no running JS, and no state to revalidate, so we can ignore the
|
|
// return value.
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::AfterProcessNextEvent() {
|
|
AssertIsOnWorkerThread();
|
|
MOZ_ASSERT(CycleCollectedJSContext::Get()->RecursionDepth());
|
|
}
|
|
|
|
nsIEventTarget* WorkerPrivate::MainThreadEventTargetForMessaging() {
|
|
return mMainThreadEventTargetForMessaging;
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchToMainThreadForMessaging(nsIRunnable* aRunnable,
|
|
uint32_t aFlags) {
|
|
nsCOMPtr<nsIRunnable> r = aRunnable;
|
|
return DispatchToMainThreadForMessaging(r.forget(), aFlags);
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchToMainThreadForMessaging(
|
|
already_AddRefed<nsIRunnable> aRunnable, uint32_t aFlags) {
|
|
return mMainThreadEventTargetForMessaging->Dispatch(std::move(aRunnable),
|
|
aFlags);
|
|
}
|
|
|
|
nsIEventTarget* WorkerPrivate::MainThreadEventTarget() {
|
|
return mMainThreadEventTarget;
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchToMainThread(nsIRunnable* aRunnable,
|
|
uint32_t aFlags) {
|
|
nsCOMPtr<nsIRunnable> r = aRunnable;
|
|
return DispatchToMainThread(r.forget(), aFlags);
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchToMainThread(
|
|
already_AddRefed<nsIRunnable> aRunnable, uint32_t aFlags) {
|
|
return mMainThreadEventTarget->Dispatch(std::move(aRunnable), aFlags);
|
|
}
|
|
|
|
nsresult WorkerPrivate::DispatchDebuggeeToMainThread(
|
|
already_AddRefed<WorkerDebuggeeRunnable> aRunnable, uint32_t aFlags) {
|
|
return mMainThreadDebuggeeEventTarget->Dispatch(std::move(aRunnable), aFlags);
|
|
}
|
|
|
|
nsISerialEventTarget* WorkerPrivate::ControlEventTarget() {
|
|
return mWorkerControlEventTarget;
|
|
}
|
|
|
|
nsISerialEventTarget* WorkerPrivate::HybridEventTarget() {
|
|
return mWorkerHybridEventTarget;
|
|
}
|
|
|
|
bool WorkerPrivate::EnsureClientSource() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (data->mClientSource) {
|
|
return true;
|
|
}
|
|
|
|
ClientType type;
|
|
switch (Type()) {
|
|
case WorkerTypeDedicated:
|
|
type = ClientType::Worker;
|
|
break;
|
|
case WorkerTypeShared:
|
|
type = ClientType::Sharedworker;
|
|
break;
|
|
case WorkerTypeService:
|
|
type = ClientType::Serviceworker;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("unknown worker type!");
|
|
}
|
|
|
|
data->mClientSource = ClientManager::CreateSource(
|
|
type, mWorkerHybridEventTarget, GetPrincipalInfo());
|
|
MOZ_DIAGNOSTIC_ASSERT(data->mClientSource);
|
|
|
|
if (data->mFrozen) {
|
|
data->mClientSource->Freeze();
|
|
}
|
|
|
|
// Shortly after the client is reserved we will try loading the main script
|
|
// for the worker. This may get intercepted by the ServiceWorkerManager
|
|
// which will then try to create a ClientHandle. Its actually possible for
|
|
// the main thread to create this ClientHandle before our IPC message creating
|
|
// the ClientSource completes. To avoid this race we synchronously ping our
|
|
// parent Client actor here. This ensure the worker ClientSource is created
|
|
// in the parent before the main thread might try reaching it with a
|
|
// ClientHandle.
|
|
//
|
|
// An alternative solution would have been to handle the out-of-order
|
|
// operations on the parent side. We could have created a small window where
|
|
// we allow ClientHandle objects to exist without a ClientSource. We would
|
|
// then time out these handles if they stayed orphaned for too long. This
|
|
// approach would be much more complex, but also avoid this extra bit of
|
|
// latency when starting workers.
|
|
//
|
|
// Note, we only have to do this for workers that can be controlled by a
|
|
// service worker. So avoid the sync overhead here if we are starting a
|
|
// service worker or a chrome worker.
|
|
if (Type() != WorkerTypeService && !IsChromeWorker()) {
|
|
data->mClientSource->WorkerSyncPing(this);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WorkerPrivate::EnsureCSPEventListener() {
|
|
if (!mCSPEventListener) {
|
|
mCSPEventListener = WorkerCSPEventListener::Create(this);
|
|
if (NS_WARN_IF(!mCSPEventListener)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsICSPEventListener* WorkerPrivate::CSPEventListener() const {
|
|
MOZ_ASSERT(mCSPEventListener);
|
|
return mCSPEventListener;
|
|
}
|
|
|
|
void WorkerPrivate::EnsurePerformanceStorage() {
|
|
AssertIsOnWorkerThread();
|
|
|
|
if (!mPerformanceStorage) {
|
|
mPerformanceStorage = PerformanceStorageWorker::Create(this);
|
|
}
|
|
}
|
|
|
|
Maybe<ClientInfo> WorkerPrivate::GetClientInfo() const {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
Maybe<ClientInfo> clientInfo;
|
|
if (!data->mClientSource) {
|
|
MOZ_DIAGNOSTIC_ASSERT(mStatus >= Canceling);
|
|
return clientInfo;
|
|
}
|
|
clientInfo.emplace(data->mClientSource->Info());
|
|
return clientInfo;
|
|
}
|
|
|
|
const ClientState WorkerPrivate::GetClientState() const {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_DIAGNOSTIC_ASSERT(data->mClientSource);
|
|
ClientState state;
|
|
data->mClientSource->SnapshotState(&state);
|
|
return state;
|
|
}
|
|
|
|
const Maybe<ServiceWorkerDescriptor> WorkerPrivate::GetController() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
if (mStatus >= Canceling) {
|
|
return Maybe<ServiceWorkerDescriptor>();
|
|
}
|
|
}
|
|
MOZ_DIAGNOSTIC_ASSERT(data->mClientSource);
|
|
return data->mClientSource->GetController();
|
|
}
|
|
|
|
void WorkerPrivate::Control(const ServiceWorkerDescriptor& aServiceWorker) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_DIAGNOSTIC_ASSERT(!IsChromeWorker());
|
|
MOZ_DIAGNOSTIC_ASSERT(Type() != WorkerTypeService);
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
if (mStatus >= Canceling) {
|
|
return;
|
|
}
|
|
}
|
|
MOZ_DIAGNOSTIC_ASSERT(data->mClientSource);
|
|
|
|
if (IsBlobURI(mLoadInfo.mBaseURI)) {
|
|
// Blob URL workers can only become controlled by inheriting from
|
|
// their parent. Make sure to note this properly.
|
|
data->mClientSource->InheritController(aServiceWorker);
|
|
} else {
|
|
// Otherwise this is a normal interception and we simply record the
|
|
// controller locally.
|
|
data->mClientSource->SetController(aServiceWorker);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::ExecutionReady() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
if (mStatus >= Canceling) {
|
|
return;
|
|
}
|
|
}
|
|
MOZ_DIAGNOSTIC_ASSERT(data->mClientSource);
|
|
data->mClientSource->WorkerExecutionReady(this);
|
|
}
|
|
|
|
void WorkerPrivate::InitializeGCTimers() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// We need a timer for GC. The basic plan is to run a non-shrinking GC
|
|
// periodically (PERIODIC_GC_TIMER_DELAY_SEC) while the worker is running.
|
|
// Once the worker goes idle we set a short (IDLE_GC_TIMER_DELAY_SEC) timer to
|
|
// run a shrinking GC. If the worker receives more messages then the short
|
|
// timer is canceled and the periodic timer resumes.
|
|
data->mGCTimer = NS_NewTimer();
|
|
MOZ_ASSERT(data->mGCTimer);
|
|
|
|
data->mPeriodicGCTimerRunning = false;
|
|
data->mIdleGCTimerRunning = false;
|
|
}
|
|
|
|
void WorkerPrivate::SetGCTimerMode(GCTimerMode aMode) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(data->mGCTimer);
|
|
|
|
if ((aMode == PeriodicTimer && data->mPeriodicGCTimerRunning) ||
|
|
(aMode == IdleTimer && data->mIdleGCTimerRunning)) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ALWAYS_SUCCEEDS(data->mGCTimer->Cancel());
|
|
|
|
data->mPeriodicGCTimerRunning = false;
|
|
data->mIdleGCTimerRunning = false;
|
|
LOG(WorkerLog(),
|
|
("Worker %p canceled GC timer because %s\n", this,
|
|
aMode == PeriodicTimer ? "periodic"
|
|
: aMode == IdleTimer ? "idle" : "none"));
|
|
|
|
if (aMode == NoTimer) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(aMode == PeriodicTimer || aMode == IdleTimer);
|
|
|
|
uint32_t delay = 0;
|
|
int16_t type = nsITimer::TYPE_ONE_SHOT;
|
|
nsTimerCallbackFunc callback = nullptr;
|
|
const char* name = nullptr;
|
|
|
|
if (aMode == PeriodicTimer) {
|
|
delay = PERIODIC_GC_TIMER_DELAY_SEC * 1000;
|
|
type = nsITimer::TYPE_REPEATING_SLACK;
|
|
callback = PeriodicGCTimerCallback;
|
|
name = "dom::PeriodicGCTimerCallback";
|
|
} else {
|
|
delay = IDLE_GC_TIMER_DELAY_SEC * 1000;
|
|
type = nsITimer::TYPE_ONE_SHOT;
|
|
callback = IdleGCTimerCallback;
|
|
name = "dom::IdleGCTimerCallback";
|
|
}
|
|
|
|
MOZ_ALWAYS_SUCCEEDS(data->mGCTimer->SetTarget(mWorkerControlEventTarget));
|
|
MOZ_ALWAYS_SUCCEEDS(data->mGCTimer->InitWithNamedFuncCallback(
|
|
callback, this, delay, type, name));
|
|
|
|
if (aMode == PeriodicTimer) {
|
|
LOG(WorkerLog(), ("Worker %p scheduled periodic GC timer\n", this));
|
|
data->mPeriodicGCTimerRunning = true;
|
|
} else {
|
|
LOG(WorkerLog(), ("Worker %p scheduled idle GC timer\n", this));
|
|
data->mIdleGCTimerRunning = true;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::ShutdownGCTimers() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
MOZ_ASSERT(data->mGCTimer);
|
|
|
|
// Always make sure the timer is canceled.
|
|
MOZ_ALWAYS_SUCCEEDS(data->mGCTimer->Cancel());
|
|
|
|
LOG(WorkerLog(), ("Worker %p killed the GC timer\n", this));
|
|
|
|
data->mGCTimer = nullptr;
|
|
data->mPeriodicGCTimerRunning = false;
|
|
data->mIdleGCTimerRunning = false;
|
|
}
|
|
|
|
bool WorkerPrivate::InterruptCallback(JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// If we are here it's because a WorkerControlRunnable has been dispatched.
|
|
// The runnable could be processed here or it could have already been
|
|
// processed by a sync event loop.
|
|
// The most important thing this method must do, is to decide if the JS
|
|
// execution should continue or not. If the runnable returns an error or if
|
|
// the worker status is >= Canceling, we should stop the JS execution.
|
|
|
|
MOZ_ASSERT(!JS_IsExceptionPending(aCx));
|
|
|
|
bool mayContinue = true;
|
|
bool scheduledIdleGC = false;
|
|
|
|
for (;;) {
|
|
// Run all control events now.
|
|
auto result = ProcessAllControlRunnables();
|
|
if (result == ProcessAllControlRunnablesResult::Abort) {
|
|
mayContinue = false;
|
|
}
|
|
|
|
bool mayFreeze = data->mFrozen;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mayFreeze) {
|
|
mayFreeze = mStatus <= Running;
|
|
}
|
|
|
|
if (mStatus >= Canceling) {
|
|
mayContinue = false;
|
|
}
|
|
}
|
|
|
|
if (!mayContinue || !mayFreeze) {
|
|
break;
|
|
}
|
|
|
|
// Cancel the periodic GC timer here before freezing. The idle GC timer
|
|
// will clean everything up once it runs.
|
|
if (!scheduledIdleGC) {
|
|
SetGCTimerMode(IdleTimer);
|
|
scheduledIdleGC = true;
|
|
}
|
|
|
|
while ((mayContinue = MayContinueRunning())) {
|
|
MutexAutoLock lock(mMutex);
|
|
if (!mControlQueue.IsEmpty()) {
|
|
break;
|
|
}
|
|
|
|
WaitForWorkerEvents();
|
|
}
|
|
}
|
|
|
|
if (!mayContinue) {
|
|
// We want only uncatchable exceptions here.
|
|
NS_ASSERTION(!JS_IsExceptionPending(aCx),
|
|
"Should not have an exception set here!");
|
|
return false;
|
|
}
|
|
|
|
// Make sure the periodic timer gets turned back on here.
|
|
SetGCTimerMode(PeriodicTimer);
|
|
|
|
return true;
|
|
}
|
|
|
|
void WorkerPrivate::CloseInternal() {
|
|
AssertIsOnWorkerThread();
|
|
NotifyInternal(Closing);
|
|
}
|
|
|
|
bool WorkerPrivate::IsOnCurrentThread() {
|
|
// May be called on any thread!
|
|
|
|
MOZ_ASSERT(mPRThread);
|
|
return PR_GetCurrentThread() == mPRThread;
|
|
}
|
|
|
|
void WorkerPrivate::ScheduleDeletion(WorkerRanOrNot aRanOrNot) {
|
|
{
|
|
// mWorkerThreadAccessible's accessor must be destructed before
|
|
// the scheduled Runnable gets to run.
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(data->mChildWorkers.IsEmpty());
|
|
}
|
|
MOZ_ASSERT(mSyncLoopStack.IsEmpty());
|
|
MOZ_ASSERT(mPostSyncLoopOperations == 0);
|
|
|
|
ClearMainEventQueue(aRanOrNot);
|
|
#ifdef DEBUG
|
|
if (WorkerRan == aRanOrNot) {
|
|
nsIThread* currentThread = NS_GetCurrentThread();
|
|
MOZ_ASSERT(currentThread);
|
|
MOZ_ASSERT(!NS_HasPendingEvents(currentThread));
|
|
}
|
|
#endif
|
|
|
|
if (WorkerPrivate* parent = GetParent()) {
|
|
RefPtr<WorkerFinishedRunnable> runnable =
|
|
new WorkerFinishedRunnable(parent, this);
|
|
if (!runnable->Dispatch()) {
|
|
NS_WARNING("Failed to dispatch runnable!");
|
|
}
|
|
} else {
|
|
// Note, this uses the lower priority DispatchToMainThreadForMessaging for
|
|
// dispatching TopLevelWorkerFinishedRunnable to the main thread so that
|
|
// other relevant runnables are guaranteed to run before it.
|
|
RefPtr<TopLevelWorkerFinishedRunnable> runnable =
|
|
new TopLevelWorkerFinishedRunnable(this);
|
|
if (NS_FAILED(DispatchToMainThreadForMessaging(runnable.forget()))) {
|
|
NS_WARNING("Failed to dispatch runnable!");
|
|
}
|
|
}
|
|
}
|
|
|
|
bool WorkerPrivate::CollectRuntimeStats(JS::RuntimeStats* aRtStats,
|
|
bool aAnonymize) {
|
|
AssertIsOnWorkerThread();
|
|
NS_ASSERTION(aRtStats, "Null RuntimeStats!");
|
|
NS_ASSERTION(mJSContext, "This must never be null!");
|
|
|
|
return JS::CollectRuntimeStats(mJSContext, aRtStats, nullptr, aAnonymize);
|
|
}
|
|
|
|
void WorkerPrivate::EnableMemoryReporter() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(!data->mMemoryReporter);
|
|
|
|
// No need to lock here since the main thread can't race until we've
|
|
// successfully registered the reporter.
|
|
data->mMemoryReporter = new MemoryReporter(this);
|
|
|
|
if (NS_FAILED(RegisterWeakAsyncMemoryReporter(data->mMemoryReporter))) {
|
|
NS_WARNING("Failed to register memory reporter!");
|
|
// No need to lock here since a failed registration means our memory
|
|
// reporter can't start running. Just clean up.
|
|
data->mMemoryReporter = nullptr;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::DisableMemoryReporter() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
RefPtr<MemoryReporter> memoryReporter;
|
|
{
|
|
// Mutex protectes MemoryReporter::mWorkerPrivate which is cleared by
|
|
// MemoryReporter::Disable() below.
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
// There is nothing to do here if the memory reporter was never successfully
|
|
// registered.
|
|
if (!data->mMemoryReporter) {
|
|
return;
|
|
}
|
|
|
|
// We don't need this set any longer. Swap it out so that we can unregister
|
|
// below.
|
|
data->mMemoryReporter.swap(memoryReporter);
|
|
|
|
// Next disable the memory reporter so that the main thread stops trying to
|
|
// signal us.
|
|
memoryReporter->Disable();
|
|
}
|
|
|
|
// Finally unregister the memory reporter.
|
|
if (NS_FAILED(UnregisterWeakMemoryReporter(memoryReporter))) {
|
|
NS_WARNING("Failed to unregister memory reporter!");
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::WaitForWorkerEvents() {
|
|
AUTO_PROFILER_LABEL("WorkerPrivate::WaitForWorkerEvents", IDLE);
|
|
|
|
AssertIsOnWorkerThread();
|
|
mMutex.AssertCurrentThreadOwns();
|
|
|
|
AUTO_PROFILER_THREAD_SLEEP;
|
|
|
|
// Wait for a worker event.
|
|
mCondVar.Wait();
|
|
}
|
|
|
|
WorkerPrivate::ProcessAllControlRunnablesResult
|
|
WorkerPrivate::ProcessAllControlRunnablesLocked() {
|
|
AssertIsOnWorkerThread();
|
|
mMutex.AssertCurrentThreadOwns();
|
|
|
|
auto result = ProcessAllControlRunnablesResult::Nothing;
|
|
|
|
for (;;) {
|
|
WorkerControlRunnable* event;
|
|
if (!mControlQueue.Pop(event)) {
|
|
break;
|
|
}
|
|
|
|
MutexAutoUnlock unlock(mMutex);
|
|
|
|
MOZ_ASSERT(event);
|
|
if (NS_FAILED(static_cast<nsIRunnable*>(event)->Run())) {
|
|
result = ProcessAllControlRunnablesResult::Abort;
|
|
}
|
|
|
|
if (result == ProcessAllControlRunnablesResult::Nothing) {
|
|
// We ran at least one thing.
|
|
result = ProcessAllControlRunnablesResult::MayContinue;
|
|
}
|
|
event->Release();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void WorkerPrivate::ClearMainEventQueue(WorkerRanOrNot aRanOrNot) {
|
|
AssertIsOnWorkerThread();
|
|
|
|
MOZ_ASSERT(mSyncLoopStack.IsEmpty());
|
|
MOZ_ASSERT(!mCancelAllPendingRunnables);
|
|
mCancelAllPendingRunnables = true;
|
|
|
|
if (WorkerNeverRan == aRanOrNot) {
|
|
for (uint32_t count = mPreStartRunnables.Length(), index = 0; index < count;
|
|
index++) {
|
|
RefPtr<WorkerRunnable> runnable = mPreStartRunnables[index].forget();
|
|
static_cast<nsIRunnable*>(runnable.get())->Run();
|
|
}
|
|
} else {
|
|
nsIThread* currentThread = NS_GetCurrentThread();
|
|
MOZ_ASSERT(currentThread);
|
|
|
|
NS_ProcessPendingEvents(currentThread);
|
|
}
|
|
|
|
MOZ_ASSERT(mCancelAllPendingRunnables);
|
|
mCancelAllPendingRunnables = false;
|
|
}
|
|
|
|
void WorkerPrivate::ClearDebuggerEventQueue() {
|
|
while (!mDebuggerQueue.IsEmpty()) {
|
|
WorkerRunnable* runnable = nullptr;
|
|
mDebuggerQueue.Pop(runnable);
|
|
// It should be ok to simply release the runnable, without running it.
|
|
runnable->Release();
|
|
}
|
|
}
|
|
|
|
bool WorkerPrivate::FreezeInternal() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
NS_ASSERTION(!data->mFrozen, "Already frozen!");
|
|
|
|
if (data->mClientSource) {
|
|
data->mClientSource->Freeze();
|
|
}
|
|
|
|
data->mFrozen = true;
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->Freeze(nullptr);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WorkerPrivate::ThawInternal() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
NS_ASSERTION(data->mFrozen, "Not yet frozen!");
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->Thaw(nullptr);
|
|
}
|
|
|
|
data->mFrozen = false;
|
|
|
|
if (data->mClientSource) {
|
|
data->mClientSource->Thaw();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void WorkerPrivate::PropagateFirstPartyStorageAccessGrantedInternal() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
mLoadInfo.mFirstPartyStorageAccessGranted = true;
|
|
|
|
WorkerGlobalScope* globalScope = GlobalScope();
|
|
if (globalScope) {
|
|
globalScope->FirstPartyStorageAccessGranted();
|
|
}
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->PropagateFirstPartyStorageAccessGranted();
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::TraverseTimeouts(nsCycleCollectionTraversalCallback& cb) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
for (uint32_t i = 0; i < data->mTimeouts.Length(); ++i) {
|
|
TimeoutInfo* tmp = data->mTimeouts[i];
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mHandler)
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UnlinkTimeouts() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
data->mTimeouts.Clear();
|
|
}
|
|
|
|
bool WorkerPrivate::ModifyBusyCountFromWorker(bool aIncrease) {
|
|
AssertIsOnWorkerThread();
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
// If we're in shutdown then the busy count is no longer being considered so
|
|
// just return now.
|
|
if (mStatus >= Killing) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
RefPtr<ModifyBusyCountRunnable> runnable =
|
|
new ModifyBusyCountRunnable(this, aIncrease);
|
|
return runnable->Dispatch();
|
|
}
|
|
|
|
bool WorkerPrivate::AddChildWorker(WorkerPrivate* aChildWorker) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
#ifdef DEBUG
|
|
{
|
|
WorkerStatus currentStatus;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
currentStatus = mStatus;
|
|
}
|
|
|
|
MOZ_ASSERT(currentStatus == Running);
|
|
}
|
|
#endif
|
|
|
|
NS_ASSERTION(!data->mChildWorkers.Contains(aChildWorker),
|
|
"Already know about this one!");
|
|
data->mChildWorkers.AppendElement(aChildWorker);
|
|
|
|
return data->mChildWorkers.Length() == 1 ? ModifyBusyCountFromWorker(true)
|
|
: true;
|
|
}
|
|
|
|
void WorkerPrivate::RemoveChildWorker(WorkerPrivate* aChildWorker) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
NS_ASSERTION(data->mChildWorkers.Contains(aChildWorker),
|
|
"Didn't know about this one!");
|
|
data->mChildWorkers.RemoveElement(aChildWorker);
|
|
|
|
if (data->mChildWorkers.IsEmpty() && !ModifyBusyCountFromWorker(false)) {
|
|
NS_WARNING("Failed to modify busy count!");
|
|
}
|
|
}
|
|
|
|
bool WorkerPrivate::AddHolder(WorkerHolder* aHolder, WorkerStatus aFailStatus) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mStatus >= aFailStatus) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(!data->mHolders.Contains(aHolder), "Already know about this one!");
|
|
|
|
if (aHolder->GetBehavior() == WorkerHolder::PreventIdleShutdownStart) {
|
|
if (!data->mNumHoldersPreventingShutdownStart &&
|
|
!ModifyBusyCountFromWorker(true)) {
|
|
return false;
|
|
}
|
|
data->mNumHoldersPreventingShutdownStart += 1;
|
|
}
|
|
|
|
data->mHolders.AppendElement(aHolder);
|
|
return true;
|
|
}
|
|
|
|
void WorkerPrivate::RemoveHolder(WorkerHolder* aHolder) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
MOZ_ASSERT(data->mHolders.Contains(aHolder), "Didn't know about this one!");
|
|
data->mHolders.RemoveElement(aHolder);
|
|
|
|
if (aHolder->GetBehavior() == WorkerHolder::PreventIdleShutdownStart) {
|
|
data->mNumHoldersPreventingShutdownStart -= 1;
|
|
if (!data->mNumHoldersPreventingShutdownStart &&
|
|
!ModifyBusyCountFromWorker(false)) {
|
|
NS_WARNING("Failed to modify busy count!");
|
|
}
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::NotifyHolders(WorkerStatus aStatus) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
NS_ASSERTION(aStatus > Closing, "Bad status!");
|
|
|
|
nsTObserverArray<WorkerHolder*>::ForwardIterator iter(data->mHolders);
|
|
while (iter.HasMore()) {
|
|
WorkerHolder* holder = iter.GetNext();
|
|
if (!holder->Notify(aStatus)) {
|
|
NS_WARNING("Failed to notify holder!");
|
|
}
|
|
}
|
|
|
|
AutoTArray<WorkerPrivate*, 10> children;
|
|
children.AppendElements(data->mChildWorkers);
|
|
|
|
for (uint32_t index = 0; index < children.Length(); index++) {
|
|
if (!children[index]->Notify(aStatus)) {
|
|
NS_WARNING("Failed to notify child worker!");
|
|
}
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::CancelAllTimeouts() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
LOG(TimeoutsLog(), ("Worker %p CancelAllTimeouts.\n", this));
|
|
|
|
if (data->mTimerRunning) {
|
|
NS_ASSERTION(data->mTimer && data->mTimerRunnable, "Huh?!");
|
|
NS_ASSERTION(!data->mTimeouts.IsEmpty(), "Huh?!");
|
|
|
|
if (NS_FAILED(data->mTimer->Cancel())) {
|
|
NS_WARNING("Failed to cancel timer!");
|
|
}
|
|
|
|
for (uint32_t index = 0; index < data->mTimeouts.Length(); index++) {
|
|
data->mTimeouts[index]->mCanceled = true;
|
|
}
|
|
|
|
// If mRunningExpiredTimeouts, then the fact that they are all canceled now
|
|
// means that the currently executing RunExpiredTimeouts will deal with
|
|
// them. Otherwise, we need to clean them up ourselves.
|
|
if (!data->mRunningExpiredTimeouts) {
|
|
data->mTimeouts.Clear();
|
|
ModifyBusyCountFromWorker(false);
|
|
}
|
|
|
|
// Set mTimerRunning false even if mRunningExpiredTimeouts is true, so that
|
|
// if we get reentered under this same RunExpiredTimeouts call we don't
|
|
// assert above that !mTimeouts().IsEmpty(), because that's clearly false
|
|
// now.
|
|
data->mTimerRunning = false;
|
|
}
|
|
#ifdef DEBUG
|
|
else if (!data->mRunningExpiredTimeouts) {
|
|
NS_ASSERTION(data->mTimeouts.IsEmpty(), "Huh?!");
|
|
}
|
|
#endif
|
|
|
|
data->mTimer = nullptr;
|
|
data->mTimerRunnable = nullptr;
|
|
}
|
|
|
|
already_AddRefed<nsIEventTarget> WorkerPrivate::CreateNewSyncLoop(
|
|
WorkerStatus aFailStatus) {
|
|
AssertIsOnWorkerThread();
|
|
MOZ_ASSERT(
|
|
aFailStatus >= Canceling,
|
|
"Sync loops can be created when the worker is in Running/Closing state!");
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mStatus >= aFailStatus) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
auto queue =
|
|
static_cast<ThreadEventQueue<EventQueue>*>(mThread->EventQueue());
|
|
nsCOMPtr<nsISerialEventTarget> realEventTarget = queue->PushEventQueue();
|
|
MOZ_ASSERT(realEventTarget);
|
|
|
|
RefPtr<EventTarget> workerEventTarget =
|
|
new EventTarget(this, realEventTarget);
|
|
|
|
{
|
|
// Modifications must be protected by mMutex in DEBUG builds, see comment
|
|
// about mSyncLoopStack in WorkerPrivate.h.
|
|
#ifdef DEBUG
|
|
MutexAutoLock lock(mMutex);
|
|
#endif
|
|
|
|
mSyncLoopStack.AppendElement(new SyncLoopInfo(workerEventTarget));
|
|
}
|
|
|
|
return workerEventTarget.forget();
|
|
}
|
|
|
|
bool WorkerPrivate::RunCurrentSyncLoop() {
|
|
AssertIsOnWorkerThread();
|
|
|
|
JSContext* cx = GetJSContext();
|
|
MOZ_ASSERT(cx);
|
|
|
|
// This should not change between now and the time we finish running this sync
|
|
// loop.
|
|
uint32_t currentLoopIndex = mSyncLoopStack.Length() - 1;
|
|
|
|
SyncLoopInfo* loopInfo = mSyncLoopStack[currentLoopIndex];
|
|
|
|
MOZ_ASSERT(loopInfo);
|
|
MOZ_ASSERT(!loopInfo->mHasRun);
|
|
MOZ_ASSERT(!loopInfo->mCompleted);
|
|
|
|
#ifdef DEBUG
|
|
loopInfo->mHasRun = true;
|
|
#endif
|
|
|
|
while (!loopInfo->mCompleted) {
|
|
bool normalRunnablesPending = false;
|
|
|
|
// Don't block with the periodic GC timer running.
|
|
if (!NS_HasPendingEvents(mThread)) {
|
|
SetGCTimerMode(IdleTimer);
|
|
}
|
|
|
|
// Wait for something to do.
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
for (;;) {
|
|
while (mControlQueue.IsEmpty() && !normalRunnablesPending &&
|
|
!(normalRunnablesPending = NS_HasPendingEvents(mThread))) {
|
|
WaitForWorkerEvents();
|
|
}
|
|
|
|
auto result = ProcessAllControlRunnablesLocked();
|
|
if (result != ProcessAllControlRunnablesResult::Nothing) {
|
|
// The state of the world may have changed. Recheck it if we need to
|
|
// continue.
|
|
normalRunnablesPending =
|
|
result == ProcessAllControlRunnablesResult::MayContinue &&
|
|
NS_HasPendingEvents(mThread);
|
|
|
|
// NB: If we processed a NotifyRunnable, we might have run
|
|
// non-control runnables, one of which may have shut down the
|
|
// sync loop.
|
|
if (loopInfo->mCompleted) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If we *didn't* run any control runnables, this should be unchanged.
|
|
MOZ_ASSERT(!loopInfo->mCompleted);
|
|
|
|
if (normalRunnablesPending) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (normalRunnablesPending) {
|
|
// Make sure the periodic timer is running before we continue.
|
|
SetGCTimerMode(PeriodicTimer);
|
|
|
|
MOZ_ALWAYS_TRUE(NS_ProcessNextEvent(mThread, false));
|
|
|
|
// Now *might* be a good time to GC. Let the JS engine make the decision.
|
|
if (JS::CurrentGlobalOrNull(cx)) {
|
|
JS_MaybeGC(cx);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make sure that the stack didn't change underneath us.
|
|
MOZ_ASSERT(mSyncLoopStack[currentLoopIndex] == loopInfo);
|
|
|
|
return DestroySyncLoop(currentLoopIndex);
|
|
}
|
|
|
|
bool WorkerPrivate::DestroySyncLoop(uint32_t aLoopIndex) {
|
|
MOZ_ASSERT(!mSyncLoopStack.IsEmpty());
|
|
MOZ_ASSERT(mSyncLoopStack.Length() - 1 == aLoopIndex);
|
|
|
|
// We're about to delete the loop, stash its event target and result.
|
|
SyncLoopInfo* loopInfo = mSyncLoopStack[aLoopIndex];
|
|
nsIEventTarget* nestedEventTarget =
|
|
loopInfo->mEventTarget->GetWeakNestedEventTarget();
|
|
MOZ_ASSERT(nestedEventTarget);
|
|
|
|
bool result = loopInfo->mResult;
|
|
|
|
{
|
|
// Modifications must be protected by mMutex in DEBUG builds, see comment
|
|
// about mSyncLoopStack in WorkerPrivate.h.
|
|
#ifdef DEBUG
|
|
MutexAutoLock lock(mMutex);
|
|
#endif
|
|
|
|
// This will delete |loopInfo|!
|
|
mSyncLoopStack.RemoveElementAt(aLoopIndex);
|
|
}
|
|
|
|
auto queue =
|
|
static_cast<ThreadEventQueue<EventQueue>*>(mThread->EventQueue());
|
|
queue->PopEventQueue(nestedEventTarget);
|
|
|
|
if (mSyncLoopStack.IsEmpty()) {
|
|
if ((mPostSyncLoopOperations & ePendingEventQueueClearing)) {
|
|
ClearMainEventQueue(WorkerRan);
|
|
}
|
|
|
|
if ((mPostSyncLoopOperations & eDispatchCancelingRunnable)) {
|
|
DispatchCancelingRunnable();
|
|
}
|
|
|
|
mPostSyncLoopOperations = 0;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void WorkerPrivate::DispatchCancelingRunnable() {
|
|
// Here we use a normal runnable to know when the current JS chunk of code
|
|
// is finished. We cannot use a WorkerRunnable because they are not
|
|
// accepted any more by the worker, and we do not want to use a
|
|
// WorkerControlRunnable because they are immediately executed.
|
|
RefPtr<CancelingRunnable> r = new CancelingRunnable();
|
|
mThread->nsThread::Dispatch(r.forget(), NS_DISPATCH_NORMAL);
|
|
|
|
// At the same time, we want to be sure that we interrupt infinite loops.
|
|
// The following runnable starts a timer that cancel the worker, from the
|
|
// parent thread, after CANCELING_TIMEOUT millseconds.
|
|
RefPtr<CancelingWithTimeoutOnParentRunnable> rr =
|
|
new CancelingWithTimeoutOnParentRunnable(this);
|
|
rr->Dispatch();
|
|
}
|
|
|
|
void WorkerPrivate::StopSyncLoop(nsIEventTarget* aSyncLoopTarget,
|
|
bool aResult) {
|
|
AssertIsOnWorkerThread();
|
|
AssertValidSyncLoop(aSyncLoopTarget);
|
|
|
|
MOZ_ASSERT(!mSyncLoopStack.IsEmpty());
|
|
|
|
for (uint32_t index = mSyncLoopStack.Length(); index > 0; index--) {
|
|
nsAutoPtr<SyncLoopInfo>& loopInfo = mSyncLoopStack[index - 1];
|
|
MOZ_ASSERT(loopInfo);
|
|
MOZ_ASSERT(loopInfo->mEventTarget);
|
|
|
|
if (loopInfo->mEventTarget == aSyncLoopTarget) {
|
|
// Can't assert |loop->mHasRun| here because dispatch failures can cause
|
|
// us to bail out early.
|
|
MOZ_ASSERT(!loopInfo->mCompleted);
|
|
|
|
loopInfo->mResult = aResult;
|
|
loopInfo->mCompleted = true;
|
|
|
|
loopInfo->mEventTarget->Disable();
|
|
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(!SameCOMIdentity(loopInfo->mEventTarget, aSyncLoopTarget));
|
|
}
|
|
|
|
MOZ_CRASH("Unknown sync loop!");
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void WorkerPrivate::AssertValidSyncLoop(nsIEventTarget* aSyncLoopTarget) {
|
|
MOZ_ASSERT(aSyncLoopTarget);
|
|
|
|
EventTarget* workerTarget;
|
|
nsresult rv = aSyncLoopTarget->QueryInterface(
|
|
kDEBUGWorkerEventTargetIID, reinterpret_cast<void**>(&workerTarget));
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
MOZ_ASSERT(workerTarget);
|
|
|
|
bool valid = false;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
for (uint32_t index = 0; index < mSyncLoopStack.Length(); index++) {
|
|
nsAutoPtr<SyncLoopInfo>& loopInfo = mSyncLoopStack[index];
|
|
MOZ_ASSERT(loopInfo);
|
|
MOZ_ASSERT(loopInfo->mEventTarget);
|
|
|
|
if (loopInfo->mEventTarget == aSyncLoopTarget) {
|
|
valid = true;
|
|
break;
|
|
}
|
|
|
|
MOZ_ASSERT(!SameCOMIdentity(loopInfo->mEventTarget, aSyncLoopTarget));
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(valid);
|
|
}
|
|
#endif
|
|
|
|
void WorkerPrivate::PostMessageToParent(
|
|
JSContext* aCx, JS::Handle<JS::Value> aMessage,
|
|
const Sequence<JSObject*>& aTransferable, ErrorResult& aRv) {
|
|
AssertIsOnWorkerThread();
|
|
|
|
JS::Rooted<JS::Value> transferable(aCx, JS::UndefinedValue());
|
|
|
|
aRv = nsContentUtils::CreateJSValueFromSequenceOfObject(aCx, aTransferable,
|
|
&transferable);
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<MessageEventRunnable> runnable = new MessageEventRunnable(
|
|
this, WorkerRunnable::ParentThreadUnchangedBusyCount);
|
|
|
|
UniquePtr<AbstractTimelineMarker> start;
|
|
UniquePtr<AbstractTimelineMarker> end;
|
|
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
|
|
bool isTimelineRecording = timelines && !timelines->IsEmpty();
|
|
|
|
if (isTimelineRecording) {
|
|
start = MakeUnique<WorkerTimelineMarker>(
|
|
NS_IsMainThread()
|
|
? ProfileTimelineWorkerOperationType::SerializeDataOnMainThread
|
|
: ProfileTimelineWorkerOperationType::SerializeDataOffMainThread,
|
|
MarkerTracingType::START);
|
|
}
|
|
|
|
runnable->Write(aCx, aMessage, transferable, JS::CloneDataPolicy(), aRv);
|
|
|
|
if (isTimelineRecording) {
|
|
end = MakeUnique<WorkerTimelineMarker>(
|
|
NS_IsMainThread()
|
|
? ProfileTimelineWorkerOperationType::SerializeDataOnMainThread
|
|
: ProfileTimelineWorkerOperationType::SerializeDataOffMainThread,
|
|
MarkerTracingType::END);
|
|
timelines->AddMarkerForAllObservedDocShells(start);
|
|
timelines->AddMarkerForAllObservedDocShells(end);
|
|
}
|
|
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return;
|
|
}
|
|
|
|
if (!runnable->Dispatch()) {
|
|
aRv = NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::EnterDebuggerEventLoop() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
JSContext* cx = GetJSContext();
|
|
MOZ_ASSERT(cx);
|
|
CycleCollectedJSContext* ccjscx = CycleCollectedJSContext::Get();
|
|
|
|
uint32_t currentEventLoopLevel = ++data->mDebuggerEventLoopLevel;
|
|
|
|
while (currentEventLoopLevel <= data->mDebuggerEventLoopLevel) {
|
|
bool debuggerRunnablesPending = false;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
debuggerRunnablesPending = !mDebuggerQueue.IsEmpty();
|
|
}
|
|
|
|
// Don't block with the periodic GC timer running.
|
|
if (!debuggerRunnablesPending) {
|
|
SetGCTimerMode(IdleTimer);
|
|
}
|
|
|
|
// Wait for something to do
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
std::queue<RefPtr<MicroTaskRunnable>>& debuggerMtQueue =
|
|
ccjscx->GetDebuggerMicroTaskQueue();
|
|
while (mControlQueue.IsEmpty() &&
|
|
!(debuggerRunnablesPending = !mDebuggerQueue.IsEmpty()) &&
|
|
debuggerMtQueue.empty()) {
|
|
WaitForWorkerEvents();
|
|
}
|
|
|
|
ProcessAllControlRunnablesLocked();
|
|
|
|
// XXXkhuey should we abort JS on the stack here if we got Abort above?
|
|
}
|
|
ccjscx->PerformDebuggerMicroTaskCheckpoint();
|
|
if (debuggerRunnablesPending) {
|
|
// Start the periodic GC timer if it is not already running.
|
|
SetGCTimerMode(PeriodicTimer);
|
|
|
|
WorkerRunnable* runnable = nullptr;
|
|
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
mDebuggerQueue.Pop(runnable);
|
|
}
|
|
|
|
MOZ_ASSERT(runnable);
|
|
static_cast<nsIRunnable*>(runnable)->Run();
|
|
runnable->Release();
|
|
|
|
ccjscx->PerformDebuggerMicroTaskCheckpoint();
|
|
|
|
// Now *might* be a good time to GC. Let the JS engine make the decision.
|
|
if (JS::CurrentGlobalOrNull(cx)) {
|
|
JS_MaybeGC(cx);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::LeaveDebuggerEventLoop() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// TODO: Why lock the mutex if we're accessing data accessible to one thread
|
|
// only?
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (data->mDebuggerEventLoopLevel > 0) {
|
|
--data->mDebuggerEventLoopLevel;
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::PostMessageToDebugger(const nsAString& aMessage) {
|
|
mDebugger->PostMessageToDebugger(aMessage);
|
|
}
|
|
|
|
void WorkerPrivate::SetDebuggerImmediate(dom::Function& aHandler,
|
|
ErrorResult& aRv) {
|
|
AssertIsOnWorkerThread();
|
|
|
|
RefPtr<DebuggerImmediateRunnable> runnable =
|
|
new DebuggerImmediateRunnable(this, aHandler);
|
|
if (!runnable->Dispatch()) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::ReportErrorToDebugger(const nsAString& aFilename,
|
|
uint32_t aLineno,
|
|
const nsAString& aMessage) {
|
|
mDebugger->ReportErrorToDebugger(aFilename, aLineno, aMessage);
|
|
}
|
|
|
|
bool WorkerPrivate::NotifyInternal(WorkerStatus aStatus) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
NS_ASSERTION(aStatus > Running && aStatus < Dead, "Bad status!");
|
|
|
|
RefPtr<EventTarget> eventTarget;
|
|
|
|
// Save the old status and set the new status.
|
|
WorkerStatus previousStatus;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (mStatus >= aStatus) {
|
|
return true;
|
|
}
|
|
|
|
MOZ_ASSERT_IF(aStatus == Killing, mStatus == Canceling);
|
|
|
|
if (aStatus >= Canceling) {
|
|
MutexAutoUnlock unlock(mMutex);
|
|
data->mClientSource.reset();
|
|
if (data->mScope) {
|
|
data->mScope->NoteTerminating();
|
|
}
|
|
}
|
|
|
|
// Make sure the hybrid event target stops dispatching runnables
|
|
// once we reaching the killing state.
|
|
if (aStatus == Killing) {
|
|
// To avoid deadlock we always acquire the event target mutex before the
|
|
// worker private mutex. (We do it in this order because this is what
|
|
// workers best for event dispatching.) To enforce that order here we
|
|
// need to unlock the worker private mutex before we lock the event target
|
|
// mutex in ForgetWorkerPrivate.
|
|
{
|
|
MutexAutoUnlock unlock(mMutex);
|
|
mWorkerHybridEventTarget->ForgetWorkerPrivate(this);
|
|
}
|
|
|
|
// Check the status code again in case another NotifyInternal came in
|
|
// while we were unlocked above.
|
|
if (mStatus >= aStatus) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
previousStatus = mStatus;
|
|
mStatus = aStatus;
|
|
|
|
// Mark parent status as closing immediately to avoid new events being
|
|
// dispatched after we clear the queue below.
|
|
if (aStatus == Closing) {
|
|
Close();
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(previousStatus != Pending);
|
|
|
|
if (aStatus >= Closing) {
|
|
CancelAllTimeouts();
|
|
}
|
|
|
|
// Let all our holders know the new status.
|
|
if (aStatus > Closing) {
|
|
NotifyHolders(aStatus);
|
|
}
|
|
|
|
// If this is the first time our status has changed then we need to clear the
|
|
// main event queue.
|
|
if (previousStatus == Running) {
|
|
// NB: If we're in a sync loop, we can't clear the queue immediately,
|
|
// because this is the wrong queue. So we have to defer it until later.
|
|
if (!mSyncLoopStack.IsEmpty()) {
|
|
mPostSyncLoopOperations |= ePendingEventQueueClearing;
|
|
} else {
|
|
ClearMainEventQueue(WorkerRan);
|
|
}
|
|
}
|
|
|
|
// If the worker script never ran, or failed to compile, we don't need to do
|
|
// anything else.
|
|
if (!GlobalScope()) {
|
|
return true;
|
|
}
|
|
|
|
// Don't abort the script now, but we dispatch a runnable to do it when the
|
|
// current JS frame is executed.
|
|
if (aStatus == Closing) {
|
|
if (!mSyncLoopStack.IsEmpty()) {
|
|
mPostSyncLoopOperations |= eDispatchCancelingRunnable;
|
|
} else {
|
|
DispatchCancelingRunnable();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
MOZ_ASSERT(aStatus == Canceling || aStatus == Killing);
|
|
|
|
// Always abort the script.
|
|
return false;
|
|
}
|
|
|
|
void WorkerPrivate::ReportError(JSContext* aCx,
|
|
JS::ConstUTF8CharsZ aToStringResult,
|
|
JSErrorReport* aReport) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (!MayContinueRunning() || data->mErrorHandlerRecursionCount == 2) {
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(data->mErrorHandlerRecursionCount == 0 ||
|
|
data->mErrorHandlerRecursionCount == 1,
|
|
"Bad recursion logic!");
|
|
|
|
JS::Rooted<JS::Value> exn(aCx);
|
|
if (!JS_GetPendingException(aCx, &exn)) {
|
|
// Probably shouldn't actually happen? But let's go ahead and just use null
|
|
// for lack of anything better.
|
|
exn.setNull();
|
|
}
|
|
JS::RootedObject exnStack(aCx, JS::GetPendingExceptionStack(aCx));
|
|
JS_ClearPendingException(aCx);
|
|
|
|
UniquePtr<WorkerErrorReport> report = MakeUnique<WorkerErrorReport>();
|
|
if (aReport) {
|
|
report->AssignErrorReport(aReport);
|
|
} else {
|
|
report->mFlags = nsIScriptError::errorFlag | nsIScriptError::exceptionFlag;
|
|
}
|
|
|
|
JS::RootedObject stack(aCx), stackGlobal(aCx);
|
|
xpc::FindExceptionStackForConsoleReport(nullptr, exn, exnStack, &stack,
|
|
&stackGlobal);
|
|
|
|
if (stack) {
|
|
report->SerializeWorkerStack(aCx, this, stack);
|
|
}
|
|
|
|
if (report->mMessage.IsEmpty() && aToStringResult) {
|
|
nsDependentCString toStringResult(aToStringResult.c_str());
|
|
if (!AppendUTF8toUTF16(toStringResult, report->mMessage,
|
|
mozilla::fallible)) {
|
|
// Try again, with only a 1 KB string. Do this infallibly this time.
|
|
// If the user doesn't have 1 KB to spare we're done anyways.
|
|
uint32_t index = std::min(uint32_t(1024), toStringResult.Length());
|
|
|
|
// Drop the last code point that may be cropped.
|
|
index = RewindToPriorUTF8Codepoint(toStringResult.BeginReading(), index);
|
|
|
|
nsDependentCString truncatedToStringResult(aToStringResult.c_str(),
|
|
index);
|
|
AppendUTF8toUTF16(truncatedToStringResult, report->mMessage);
|
|
}
|
|
}
|
|
|
|
data->mErrorHandlerRecursionCount++;
|
|
|
|
// Don't want to run the scope's error handler if this is a recursive error or
|
|
// if we ran out of memory.
|
|
bool fireAtScope = data->mErrorHandlerRecursionCount == 1 &&
|
|
report->mErrorNumber != JSMSG_OUT_OF_MEMORY &&
|
|
JS::CurrentGlobalOrNull(aCx);
|
|
|
|
WorkerErrorReport::ReportError(aCx, this, fireAtScope, nullptr,
|
|
std::move(report), 0, exn);
|
|
|
|
data->mErrorHandlerRecursionCount--;
|
|
}
|
|
|
|
// static
|
|
void WorkerPrivate::ReportErrorToConsole(const char* aMessage) {
|
|
nsTArray<nsString> emptyParams;
|
|
WorkerPrivate::ReportErrorToConsole(aMessage, emptyParams);
|
|
}
|
|
|
|
// static
|
|
void WorkerPrivate::ReportErrorToConsole(const char* aMessage,
|
|
const nsTArray<nsString>& aParams) {
|
|
WorkerPrivate* wp = nullptr;
|
|
if (!NS_IsMainThread()) {
|
|
wp = GetCurrentThreadWorkerPrivate();
|
|
}
|
|
|
|
ReportErrorToConsoleRunnable::Report(wp, aMessage, aParams);
|
|
}
|
|
|
|
int32_t WorkerPrivate::SetTimeout(JSContext* aCx, TimeoutHandler* aHandler,
|
|
int32_t aTimeout, bool aIsInterval,
|
|
ErrorResult& aRv) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(aHandler);
|
|
|
|
const int32_t timerId = data->mNextTimeoutId++;
|
|
|
|
WorkerStatus currentStatus;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
currentStatus = mStatus;
|
|
}
|
|
|
|
// If the worker is trying to call setTimeout/setInterval and the parent
|
|
// thread has initiated the close process then just silently fail.
|
|
if (currentStatus >= Closing) {
|
|
return timerId;
|
|
}
|
|
|
|
nsAutoPtr<TimeoutInfo> newInfo(new TimeoutInfo());
|
|
newInfo->mIsInterval = aIsInterval;
|
|
newInfo->mId = timerId;
|
|
|
|
if (MOZ_UNLIKELY(timerId == INT32_MAX)) {
|
|
NS_WARNING("Timeout ids overflowed!");
|
|
data->mNextTimeoutId = 1;
|
|
}
|
|
|
|
newInfo->mHandler = aHandler;
|
|
|
|
// See if any of the optional arguments were passed.
|
|
aTimeout = std::max(0, aTimeout);
|
|
newInfo->mInterval = TimeDuration::FromMilliseconds(aTimeout);
|
|
|
|
newInfo->mTargetTime = TimeStamp::Now() + newInfo->mInterval;
|
|
|
|
nsAutoPtr<TimeoutInfo>* insertedInfo = data->mTimeouts.InsertElementSorted(
|
|
newInfo.forget(), GetAutoPtrComparator(data->mTimeouts));
|
|
|
|
LOG(TimeoutsLog(), ("Worker %p has new timeout: delay=%d interval=%s\n", this,
|
|
aTimeout, aIsInterval ? "yes" : "no"));
|
|
|
|
// If the timeout we just made is set to fire next then we need to update the
|
|
// timer, unless we're currently running timeouts.
|
|
if (insertedInfo == data->mTimeouts.Elements() &&
|
|
!data->mRunningExpiredTimeouts) {
|
|
if (!data->mTimer) {
|
|
data->mTimer = NS_NewTimer();
|
|
if (!data->mTimer) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return 0;
|
|
}
|
|
|
|
data->mTimerRunnable = new TimerRunnable(this);
|
|
}
|
|
|
|
if (!data->mTimerRunning) {
|
|
if (!ModifyBusyCountFromWorker(true)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return 0;
|
|
}
|
|
data->mTimerRunning = true;
|
|
}
|
|
|
|
if (!RescheduleTimeoutTimer(aCx)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return timerId;
|
|
}
|
|
|
|
void WorkerPrivate::ClearTimeout(int32_t aId) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (!data->mTimeouts.IsEmpty()) {
|
|
NS_ASSERTION(data->mTimerRunning, "Huh?!");
|
|
|
|
for (uint32_t index = 0; index < data->mTimeouts.Length(); index++) {
|
|
nsAutoPtr<TimeoutInfo>& info = data->mTimeouts[index];
|
|
if (info->mId == aId) {
|
|
info->mCanceled = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool WorkerPrivate::RunExpiredTimeouts(JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// We may be called recursively (e.g. close() inside a timeout) or we could
|
|
// have been canceled while this event was pending, bail out if there is
|
|
// nothing to do.
|
|
if (data->mRunningExpiredTimeouts || !data->mTimerRunning) {
|
|
return true;
|
|
}
|
|
|
|
NS_ASSERTION(data->mTimer && data->mTimerRunnable, "Must have a timer!");
|
|
NS_ASSERTION(!data->mTimeouts.IsEmpty(), "Should have some work to do!");
|
|
|
|
bool retval = true;
|
|
|
|
AutoPtrComparator<TimeoutInfo> comparator =
|
|
GetAutoPtrComparator(data->mTimeouts);
|
|
JS::Rooted<JSObject*> global(aCx, JS::CurrentGlobalOrNull(aCx));
|
|
|
|
// We want to make sure to run *something*, even if the timer fired a little
|
|
// early. Fudge the value of now to at least include the first timeout.
|
|
const TimeStamp actual_now = TimeStamp::Now();
|
|
const TimeStamp now = std::max(actual_now, data->mTimeouts[0]->mTargetTime);
|
|
|
|
if (now != actual_now) {
|
|
LOG(TimeoutsLog(), ("Worker %p fudged timeout by %f ms.\n", this,
|
|
(now - actual_now).ToMilliseconds()));
|
|
}
|
|
|
|
AutoTArray<TimeoutInfo*, 10> expiredTimeouts;
|
|
for (uint32_t index = 0; index < data->mTimeouts.Length(); index++) {
|
|
nsAutoPtr<TimeoutInfo>& info = data->mTimeouts[index];
|
|
if (info->mTargetTime > now) {
|
|
break;
|
|
}
|
|
expiredTimeouts.AppendElement(info);
|
|
}
|
|
|
|
// Guard against recursion.
|
|
data->mRunningExpiredTimeouts = true;
|
|
|
|
// Run expired timeouts.
|
|
for (uint32_t index = 0; index < expiredTimeouts.Length(); index++) {
|
|
TimeoutInfo*& info = expiredTimeouts[index];
|
|
|
|
if (info->mCanceled) {
|
|
continue;
|
|
}
|
|
|
|
LOG(TimeoutsLog(),
|
|
("Worker %p executing timeout with original delay %f ms.\n", this,
|
|
info->mInterval.ToMilliseconds()));
|
|
|
|
// Always check JS_IsExceptionPending if something fails, and if
|
|
// JS_IsExceptionPending returns false (i.e. uncatchable exception) then
|
|
// break out of the loop.
|
|
const char* reason;
|
|
if (info->mIsInterval) {
|
|
reason = "setInterval handler";
|
|
} else {
|
|
reason = "setTimeout handler";
|
|
}
|
|
|
|
RefPtr<TimeoutHandler> handler(info->mHandler);
|
|
|
|
RefPtr<WorkerGlobalScope> scope(this->GlobalScope());
|
|
CallbackDebuggerNotificationGuard guard(
|
|
scope, info->mIsInterval
|
|
? DebuggerNotificationType::SetIntervalCallback
|
|
: DebuggerNotificationType::SetTimeoutCallback);
|
|
if (!handler->Call(reason)) {
|
|
retval = false;
|
|
break;
|
|
}
|
|
|
|
NS_ASSERTION(data->mRunningExpiredTimeouts, "Someone changed this!");
|
|
}
|
|
|
|
// No longer possible to be called recursively.
|
|
data->mRunningExpiredTimeouts = false;
|
|
|
|
// Now remove canceled and expired timeouts from the main list.
|
|
// NB: The timeouts present in expiredTimeouts must have the same order
|
|
// with respect to each other in mTimeouts. That is, mTimeouts is just
|
|
// expiredTimeouts with extra elements inserted. There may be unexpired
|
|
// timeouts that have been inserted between the expired timeouts if the
|
|
// timeout event handler called setTimeout/setInterval.
|
|
for (uint32_t index = 0, expiredTimeoutIndex = 0,
|
|
expiredTimeoutLength = expiredTimeouts.Length();
|
|
index < data->mTimeouts.Length();) {
|
|
nsAutoPtr<TimeoutInfo>& info = data->mTimeouts[index];
|
|
if ((expiredTimeoutIndex < expiredTimeoutLength &&
|
|
info == expiredTimeouts[expiredTimeoutIndex] &&
|
|
++expiredTimeoutIndex) ||
|
|
info->mCanceled) {
|
|
if (info->mIsInterval && !info->mCanceled) {
|
|
// Reschedule intervals.
|
|
info->mTargetTime = info->mTargetTime + info->mInterval;
|
|
// Don't resort the list here, we'll do that at the end.
|
|
++index;
|
|
} else {
|
|
data->mTimeouts.RemoveElement(info);
|
|
}
|
|
} else {
|
|
// If info did not match the current entry in expiredTimeouts, it
|
|
// shouldn't be there at all.
|
|
NS_ASSERTION(!expiredTimeouts.Contains(info),
|
|
"Our timeouts are out of order!");
|
|
++index;
|
|
}
|
|
}
|
|
|
|
data->mTimeouts.Sort(comparator);
|
|
|
|
// Either signal the parent that we're no longer using timeouts or reschedule
|
|
// the timer.
|
|
if (data->mTimeouts.IsEmpty()) {
|
|
if (!ModifyBusyCountFromWorker(false)) {
|
|
retval = false;
|
|
}
|
|
data->mTimerRunning = false;
|
|
} else if (retval && !RescheduleTimeoutTimer(aCx)) {
|
|
retval = false;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
bool WorkerPrivate::RescheduleTimeoutTimer(JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
MOZ_ASSERT(!data->mRunningExpiredTimeouts);
|
|
NS_ASSERTION(!data->mTimeouts.IsEmpty(), "Should have some timeouts!");
|
|
NS_ASSERTION(data->mTimer && data->mTimerRunnable, "Should have a timer!");
|
|
|
|
// NB: This is important! The timer may have already fired, e.g. if a timeout
|
|
// callback itself calls setTimeout for a short duration and then takes longer
|
|
// than that to finish executing. If that has happened, it's very important
|
|
// that we don't execute the event that is now pending in our event queue, or
|
|
// our code in RunExpiredTimeouts to "fudge" the timeout value will unleash an
|
|
// early timeout when we execute the event we're about to queue.
|
|
data->mTimer->Cancel();
|
|
|
|
double delta =
|
|
(data->mTimeouts[0]->mTargetTime - TimeStamp::Now()).ToMilliseconds();
|
|
uint32_t delay = delta > 0 ? std::min(delta, double(UINT32_MAX)) : 0;
|
|
|
|
LOG(TimeoutsLog(),
|
|
("Worker %p scheduled timer for %d ms, %zu pending timeouts\n", this,
|
|
delay, data->mTimeouts.Length()));
|
|
|
|
nsresult rv = data->mTimer->InitWithCallback(data->mTimerRunnable, delay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
if (NS_FAILED(rv)) {
|
|
JS_ReportErrorASCII(aCx, "Failed to start timer!");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void WorkerPrivate::StartCancelingTimer() {
|
|
AssertIsOnParentThread();
|
|
|
|
auto errorCleanup = MakeScopeExit([&] { mCancelingTimer = nullptr; });
|
|
|
|
MOZ_ASSERT(!mCancelingTimer);
|
|
|
|
if (WorkerPrivate* parent = GetParent()) {
|
|
mCancelingTimer = NS_NewTimer(parent->ControlEventTarget());
|
|
} else {
|
|
mCancelingTimer = NS_NewTimer();
|
|
}
|
|
|
|
if (NS_WARN_IF(!mCancelingTimer)) {
|
|
return;
|
|
}
|
|
|
|
// This is not needed if we are already in an advanced shutdown state.
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
if (ParentStatus() >= Canceling) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
uint32_t cancelingTimeoutMillis =
|
|
StaticPrefs::dom_worker_canceling_timeoutMilliseconds();
|
|
|
|
RefPtr<CancelingTimerCallback> callback = new CancelingTimerCallback(this);
|
|
nsresult rv = mCancelingTimer->InitWithCallback(
|
|
callback, cancelingTimeoutMillis, nsITimer::TYPE_ONE_SHOT);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return;
|
|
}
|
|
|
|
errorCleanup.release();
|
|
}
|
|
|
|
void WorkerPrivate::UpdateContextOptionsInternal(
|
|
JSContext* aCx, const JS::ContextOptions& aContextOptions) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
JS::ContextOptionsRef(aCx) = aContextOptions;
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->UpdateContextOptions(aContextOptions);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UpdateLanguagesInternal(
|
|
const nsTArray<nsString>& aLanguages) {
|
|
WorkerGlobalScope* globalScope = GlobalScope();
|
|
if (globalScope) {
|
|
RefPtr<WorkerNavigator> nav = globalScope->GetExistingNavigator();
|
|
if (nav) {
|
|
nav->SetLanguages(aLanguages);
|
|
}
|
|
}
|
|
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->UpdateLanguages(aLanguages);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::UpdateJSWorkerMemoryParameterInternal(JSContext* aCx,
|
|
JSGCParamKey aKey,
|
|
uint32_t aValue) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
// XXX aValue might be 0 here (telling us to unset a previous value for child
|
|
// workers). Calling JS_SetGCParameter with a value of 0 isn't actually
|
|
// supported though. We really need some way to revert to a default value
|
|
// here.
|
|
if (aValue) {
|
|
JS_SetGCParameter(aCx, aKey, aValue);
|
|
}
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->UpdateJSWorkerMemoryParameter(aKey, aValue);
|
|
}
|
|
}
|
|
|
|
#ifdef JS_GC_ZEAL
|
|
void WorkerPrivate::UpdateGCZealInternal(JSContext* aCx, uint8_t aGCZeal,
|
|
uint32_t aFrequency) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
JS_SetGCZeal(aCx, aGCZeal, aFrequency);
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->UpdateGCZeal(aGCZeal, aFrequency);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void WorkerPrivate::SetLowMemoryStateInternal(JSContext* aCx, bool aState) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
JS::SetLowMemoryState(aCx, aState);
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->SetLowMemoryState(aState);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::GarbageCollectInternal(JSContext* aCx, bool aShrinking,
|
|
bool aCollectChildren) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (!GlobalScope()) {
|
|
// We haven't compiled anything yet. Just bail out.
|
|
return;
|
|
}
|
|
|
|
if (aShrinking || aCollectChildren) {
|
|
JS::PrepareForFullGC(aCx);
|
|
|
|
if (aShrinking) {
|
|
JS::NonIncrementalGC(aCx, GC_SHRINK, JS::GCReason::DOM_WORKER);
|
|
|
|
if (!aCollectChildren) {
|
|
LOG(WorkerLog(), ("Worker %p collected idle garbage\n", this));
|
|
}
|
|
} else {
|
|
JS::NonIncrementalGC(aCx, GC_NORMAL, JS::GCReason::DOM_WORKER);
|
|
LOG(WorkerLog(), ("Worker %p collected garbage\n", this));
|
|
}
|
|
} else {
|
|
JS_MaybeGC(aCx);
|
|
LOG(WorkerLog(), ("Worker %p collected periodic garbage\n", this));
|
|
}
|
|
|
|
if (aCollectChildren) {
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->GarbageCollect(aShrinking);
|
|
}
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::CycleCollectInternal(bool aCollectChildren) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
nsCycleCollector_collect(nullptr);
|
|
|
|
if (aCollectChildren) {
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->CycleCollect(/* aDummy = */ false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::MemoryPressureInternal() {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (data->mScope) {
|
|
RefPtr<Console> console = data->mScope->GetConsoleIfExists();
|
|
if (console) {
|
|
console->ClearStorage();
|
|
}
|
|
|
|
RefPtr<Performance> performance = data->mScope->GetPerformanceIfExists();
|
|
if (performance) {
|
|
performance->MemoryPressure();
|
|
}
|
|
}
|
|
|
|
if (data->mDebuggerScope) {
|
|
RefPtr<Console> console = data->mDebuggerScope->GetConsoleIfExists();
|
|
if (console) {
|
|
console->ClearStorage();
|
|
}
|
|
}
|
|
|
|
for (uint32_t index = 0; index < data->mChildWorkers.Length(); index++) {
|
|
data->mChildWorkers[index]->MemoryPressure(false);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::SetThread(WorkerThread* aThread) {
|
|
if (aThread) {
|
|
#ifdef DEBUG
|
|
{
|
|
bool isOnCurrentThread;
|
|
MOZ_ASSERT(NS_SUCCEEDED(aThread->IsOnCurrentThread(&isOnCurrentThread)));
|
|
MOZ_ASSERT(!isOnCurrentThread);
|
|
}
|
|
#endif
|
|
|
|
MOZ_ASSERT(!mPRThread);
|
|
mPRThread = PRThreadFromThread(aThread);
|
|
MOZ_ASSERT(mPRThread);
|
|
|
|
mWorkerThreadAccessible.Transfer(mPRThread);
|
|
} else {
|
|
MOZ_ASSERT(mPRThread);
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::SetWorkerPrivateInWorkerThread(
|
|
WorkerThread* const aThread) {
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
MOZ_ASSERT(!mThread);
|
|
MOZ_ASSERT(mStatus == Pending);
|
|
|
|
mThread = aThread;
|
|
mThread->SetWorker(WorkerThreadFriendKey{}, this);
|
|
|
|
if (!mPreStartRunnables.IsEmpty()) {
|
|
for (uint32_t index = 0; index < mPreStartRunnables.Length(); index++) {
|
|
MOZ_ALWAYS_SUCCEEDS(mThread->DispatchAnyThread(
|
|
WorkerThreadFriendKey{}, mPreStartRunnables[index].forget()));
|
|
}
|
|
mPreStartRunnables.Clear();
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::ResetWorkerPrivateInWorkerThread() {
|
|
RefPtr<WorkerThread> doomedThread;
|
|
|
|
// Release the mutex before doomedThread.
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
MOZ_ASSERT(mThread);
|
|
|
|
mThread->SetWorker(WorkerThreadFriendKey{}, nullptr);
|
|
mThread.swap(doomedThread);
|
|
}
|
|
|
|
void WorkerPrivate::BeginCTypesCall() {
|
|
AssertIsOnWorkerThread();
|
|
|
|
// Don't try to GC while we're blocked in a ctypes call.
|
|
SetGCTimerMode(NoTimer);
|
|
}
|
|
|
|
void WorkerPrivate::EndCTypesCall() {
|
|
AssertIsOnWorkerThread();
|
|
|
|
// Make sure the periodic timer is running before we start running JS again.
|
|
SetGCTimerMode(PeriodicTimer);
|
|
}
|
|
|
|
bool WorkerPrivate::ConnectMessagePort(
|
|
JSContext* aCx, const MessagePortIdentifier& aIdentifier) {
|
|
AssertIsOnWorkerThread();
|
|
|
|
WorkerGlobalScope* globalScope = GlobalScope();
|
|
|
|
JS::Rooted<JSObject*> jsGlobal(aCx, globalScope->GetWrapper());
|
|
MOZ_ASSERT(jsGlobal);
|
|
|
|
// This MessagePortIdentifier is used to create a new port, still connected
|
|
// with the other one, but in the worker thread.
|
|
ErrorResult rv;
|
|
RefPtr<MessagePort> port = MessagePort::Create(globalScope, aIdentifier, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
rv.SuppressException();
|
|
return false;
|
|
}
|
|
|
|
GlobalObject globalObject(aCx, jsGlobal);
|
|
if (globalObject.Failed()) {
|
|
return false;
|
|
}
|
|
|
|
RootedDictionary<MessageEventInit> init(aCx);
|
|
init.mData = JS_GetEmptyStringValue(aCx);
|
|
init.mBubbles = false;
|
|
init.mCancelable = false;
|
|
init.mSource.SetValue().SetAsMessagePort() = port;
|
|
if (!init.mPorts.AppendElement(port.forget(), fallible)) {
|
|
return false;
|
|
}
|
|
|
|
RefPtr<MessageEvent> event = MessageEvent::Constructor(
|
|
globalObject, NS_LITERAL_STRING("connect"), init, rv);
|
|
|
|
event->SetTrusted(true);
|
|
|
|
globalScope->DispatchEvent(*event);
|
|
|
|
return true;
|
|
}
|
|
|
|
WorkerGlobalScope* WorkerPrivate::GetOrCreateGlobalScope(JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
if (!data->mScope) {
|
|
RefPtr<WorkerGlobalScope> globalScope;
|
|
if (IsSharedWorker()) {
|
|
globalScope = new SharedWorkerGlobalScope(this, WorkerName());
|
|
} else if (IsServiceWorker()) {
|
|
globalScope = new ServiceWorkerGlobalScope(
|
|
this, GetServiceWorkerRegistrationDescriptor());
|
|
} else {
|
|
globalScope = new DedicatedWorkerGlobalScope(this, WorkerName());
|
|
}
|
|
|
|
JS::Rooted<JSObject*> global(aCx);
|
|
NS_ENSURE_TRUE(globalScope->WrapGlobalObject(aCx, &global), nullptr);
|
|
|
|
JSAutoRealm ar(aCx, global);
|
|
|
|
// RegisterBindings() can spin a nested event loop so we have to set mScope
|
|
// before calling it, and we have to make sure to unset mScope if it fails.
|
|
data->mScope = std::move(globalScope);
|
|
|
|
if (!RegisterBindings(aCx, global)) {
|
|
data->mScope = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
JS_FireOnNewGlobalObject(aCx, global);
|
|
}
|
|
|
|
return data->mScope;
|
|
}
|
|
|
|
WorkerDebuggerGlobalScope* WorkerPrivate::CreateDebuggerGlobalScope(
|
|
JSContext* aCx) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
MOZ_ASSERT(!data->mDebuggerScope);
|
|
|
|
RefPtr<WorkerDebuggerGlobalScope> globalScope =
|
|
new WorkerDebuggerGlobalScope(this);
|
|
|
|
JS::Rooted<JSObject*> global(aCx);
|
|
NS_ENSURE_TRUE(globalScope->WrapGlobalObject(aCx, &global), nullptr);
|
|
|
|
JSAutoRealm ar(aCx, global);
|
|
|
|
// RegisterDebuggerBindings() can spin a nested event loop so we have to set
|
|
// mDebuggerScope before calling it, and we have to make sure to unset
|
|
// mDebuggerScope if it fails.
|
|
data->mDebuggerScope = std::move(globalScope);
|
|
|
|
if (!RegisterDebuggerBindings(aCx, global)) {
|
|
data->mDebuggerScope = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
JS_FireOnNewGlobalObject(aCx, global);
|
|
|
|
return data->mDebuggerScope;
|
|
}
|
|
|
|
bool WorkerPrivate::IsOnWorkerThread() const {
|
|
// We can't use mThread because it must be protected by mMutex and sometimes
|
|
// this method is called when mMutex is already locked. This method should
|
|
// always work.
|
|
MOZ_ASSERT(mPRThread,
|
|
"AssertIsOnWorkerThread() called before a thread was assigned!");
|
|
|
|
return mPRThread == PR_GetCurrentThread();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void WorkerPrivate::AssertIsOnWorkerThread() const {
|
|
MOZ_ASSERT(IsOnWorkerThread());
|
|
}
|
|
#endif // DEBUG
|
|
|
|
void WorkerPrivate::DumpCrashInformation(nsACString& aString) {
|
|
MOZ_ACCESS_THREAD_BOUND(mWorkerThreadAccessible, data);
|
|
|
|
nsTObserverArray<WorkerHolder*>::ForwardIterator iter(data->mHolders);
|
|
while (iter.HasMore()) {
|
|
WorkerHolder* holder = iter.GetNext();
|
|
aString.Append("|");
|
|
aString.Append(holder->Name());
|
|
}
|
|
}
|
|
|
|
void WorkerPrivate::EnsurePerformanceCounter() {
|
|
AssertIsOnWorkerThread();
|
|
if (!mPerformanceCounter) {
|
|
nsPrintfCString workerName("Worker:%s",
|
|
NS_ConvertUTF16toUTF8(mWorkerName).get());
|
|
mPerformanceCounter = new PerformanceCounter(workerName);
|
|
}
|
|
}
|
|
|
|
PerformanceCounter* WorkerPrivate::GetPerformanceCounter() {
|
|
return mPerformanceCounter;
|
|
}
|
|
|
|
PerformanceStorage* WorkerPrivate::GetPerformanceStorage() {
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(mPerformanceStorage);
|
|
return mPerformanceStorage;
|
|
}
|
|
|
|
void WorkerPrivate::SetRemoteWorkerController(RemoteWorkerChild* aController) {
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(aController);
|
|
MOZ_ASSERT(!mRemoteWorkerController);
|
|
|
|
mRemoteWorkerController = aController;
|
|
}
|
|
|
|
RemoteWorkerChild* WorkerPrivate::GetRemoteWorkerController() {
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(mRemoteWorkerController);
|
|
return mRemoteWorkerController;
|
|
}
|
|
|
|
nsAString& WorkerPrivate::Id() {
|
|
AssertIsOnMainThread();
|
|
|
|
if (mID.IsEmpty()) {
|
|
nsresult rv;
|
|
nsCOMPtr<nsIUUIDGenerator> uuidGenerator =
|
|
do_GetService("@mozilla.org/uuid-generator;1", &rv);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
|
|
nsID uuid;
|
|
rv = uuidGenerator->GenerateUUIDInPlace(&uuid);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
char buffer[NSID_LENGTH];
|
|
uuid.ToProvidedString(buffer);
|
|
// Remove {} and the null terminator
|
|
mID.AssignASCII(&buffer[1], NSID_LENGTH - 3);
|
|
}
|
|
|
|
return mID;
|
|
}
|
|
|
|
NS_IMPL_ADDREF(WorkerPrivate::EventTarget)
|
|
NS_IMPL_RELEASE(WorkerPrivate::EventTarget)
|
|
|
|
NS_INTERFACE_MAP_BEGIN(WorkerPrivate::EventTarget)
|
|
NS_INTERFACE_MAP_ENTRY(nsISerialEventTarget)
|
|
NS_INTERFACE_MAP_ENTRY(nsIEventTarget)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
#ifdef DEBUG
|
|
// kDEBUGWorkerEventTargetIID is special in that it does not AddRef its
|
|
// result.
|
|
if (aIID.Equals(kDEBUGWorkerEventTargetIID)) {
|
|
*aInstancePtr = this;
|
|
return NS_OK;
|
|
} else
|
|
#endif
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::EventTarget::DispatchFromScript(nsIRunnable* aRunnable,
|
|
uint32_t aFlags) {
|
|
nsCOMPtr<nsIRunnable> event(aRunnable);
|
|
return Dispatch(event.forget(), aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::EventTarget::Dispatch(already_AddRefed<nsIRunnable> aRunnable,
|
|
uint32_t aFlags) {
|
|
// May be called on any thread!
|
|
nsCOMPtr<nsIRunnable> event(aRunnable);
|
|
|
|
// Workers only support asynchronous dispatch for now.
|
|
if (NS_WARN_IF(aFlags != NS_DISPATCH_NORMAL)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
RefPtr<WorkerRunnable> workerRunnable;
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (!mWorkerPrivate) {
|
|
NS_WARNING(
|
|
"A runnable was posted to a worker that is already shutting "
|
|
"down!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
if (event) {
|
|
workerRunnable = mWorkerPrivate->MaybeWrapAsWorkerRunnable(event.forget());
|
|
}
|
|
|
|
nsresult rv =
|
|
mWorkerPrivate->Dispatch(workerRunnable.forget(), mNestedEventTarget);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::EventTarget::DelayedDispatch(already_AddRefed<nsIRunnable>,
|
|
uint32_t)
|
|
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WorkerPrivate::EventTarget::IsOnCurrentThread(bool* aIsOnCurrentThread) {
|
|
// May be called on any thread!
|
|
|
|
MOZ_ASSERT(aIsOnCurrentThread);
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (!mWorkerPrivate) {
|
|
NS_WARNING("A worker's event target was used after the worker has !");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
*aIsOnCurrentThread = mWorkerPrivate->IsOnCurrentThread();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
WorkerPrivate::EventTarget::IsOnCurrentThreadInfallible() {
|
|
// May be called on any thread!
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (!mWorkerPrivate) {
|
|
NS_WARNING("A worker's event target was used after the worker has !");
|
|
return false;
|
|
}
|
|
|
|
return mWorkerPrivate->IsOnCurrentThread();
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|