mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 05:35:31 +00:00
1528 lines
33 KiB
C++
1528 lines
33 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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#ifndef mozilla_dom_workers_workerprivate_h__
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#define mozilla_dom_workers_workerprivate_h__
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#include "Workers.h"
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#include "nsIContentPolicy.h"
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#include "nsIContentSecurityPolicy.h"
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#include "nsILoadGroup.h"
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#include "nsIWorkerDebugger.h"
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#include "nsPIDOMWindow.h"
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#include "mozilla/CondVar.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "nsAutoPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "nsRefPtrHashtable.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsThreadUtils.h"
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#include "nsTObserverArray.h"
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#include "Queue.h"
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#include "WorkerFeature.h"
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class nsIChannel;
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class nsIDocument;
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class nsIEventTarget;
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class nsIPrincipal;
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class nsIScriptContext;
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class nsISerializable;
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class nsIThread;
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class nsIThreadInternal;
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class nsITimer;
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class nsIURI;
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namespace JS {
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struct RuntimeStats;
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} // namespace JS
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namespace mozilla {
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namespace dom {
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class Function;
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class MessagePort;
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class MessagePortIdentifier;
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class StructuredCloneHolder;
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} // namespace dom
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namespace ipc {
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class PrincipalInfo;
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} // namespace ipc
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} // namespace mozilla
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struct PRThread;
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class ReportDebuggerErrorRunnable;
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class PostDebuggerMessageRunnable;
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BEGIN_WORKERS_NAMESPACE
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class AutoSyncLoopHolder;
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class SharedWorker;
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class ServiceWorkerClientInfo;
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class WorkerControlRunnable;
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class WorkerDebugger;
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class WorkerDebuggerGlobalScope;
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class WorkerGlobalScope;
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class WorkerPrivate;
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class WorkerRunnable;
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class WorkerThread;
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// SharedMutex is a small wrapper around an (internal) reference-counted Mutex
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// object. It exists to avoid changing a lot of code to use Mutex* instead of
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// Mutex&.
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class SharedMutex
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{
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typedef mozilla::Mutex Mutex;
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class RefCountedMutex final : public Mutex
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{
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public:
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explicit RefCountedMutex(const char* aName)
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: Mutex(aName)
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{ }
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RefCountedMutex)
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private:
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~RefCountedMutex()
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{ }
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};
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RefPtr<RefCountedMutex> mMutex;
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public:
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explicit SharedMutex(const char* aName)
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: mMutex(new RefCountedMutex(aName))
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{ }
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SharedMutex(SharedMutex& aOther)
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: mMutex(aOther.mMutex)
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{ }
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operator Mutex&()
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{
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return *mMutex;
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}
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operator const Mutex&() const
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{
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return *mMutex;
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}
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void
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AssertCurrentThreadOwns() const
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{
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mMutex->AssertCurrentThreadOwns();
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}
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};
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template <class Derived>
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class WorkerPrivateParent : public DOMEventTargetHelper
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{
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protected:
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class EventTarget;
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friend class EventTarget;
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typedef mozilla::ipc::PrincipalInfo PrincipalInfo;
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public:
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struct LocationInfo
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{
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nsCString mHref;
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nsCString mProtocol;
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nsCString mHost;
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nsCString mHostname;
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nsCString mPort;
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nsCString mPathname;
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nsCString mSearch;
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nsCString mHash;
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nsString mOrigin;
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};
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protected:
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typedef mozilla::ErrorResult ErrorResult;
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SharedMutex mMutex;
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mozilla::CondVar mCondVar;
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mozilla::CondVar mMemoryReportCondVar;
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// Protected by mMutex.
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RefPtr<EventTarget> mEventTarget;
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nsTArray<RefPtr<WorkerRunnable>> mPreStartRunnables;
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private:
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WorkerPrivate* mParent;
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nsString mScriptURL;
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// This is the worker name for shared workers or the worker scope
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// for service workers.
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nsCString mWorkerName;
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LocationInfo mLocationInfo;
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// The lifetime of these objects within LoadInfo is managed explicitly;
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// they do not need to be cycle collected.
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WorkerLoadInfo mLoadInfo;
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Atomic<bool> mLoadingWorkerScript;
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// Only used for top level workers.
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nsTArray<nsCOMPtr<nsIRunnable>> mQueuedRunnables;
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// Protected by mMutex.
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JSSettings mJSSettings;
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// Only touched on the parent thread (currently this is always the main
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// thread as SharedWorkers are always top-level).
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nsTArray<RefPtr<SharedWorker>> mSharedWorkers;
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uint64_t mBusyCount;
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Status mParentStatus;
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bool mParentFrozen;
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bool mParentSuspended;
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bool mIsChromeWorker;
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bool mMainThreadObjectsForgotten;
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WorkerType mWorkerType;
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TimeStamp mCreationTimeStamp;
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DOMHighResTimeStamp mCreationTimeHighRes;
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TimeStamp mNowBaseTimeStamp;
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DOMHighResTimeStamp mNowBaseTimeHighRes;
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protected:
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// The worker is owned by its thread, which is represented here. This is set
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// in Construct() and emptied by WorkerFinishedRunnable, and conditionally
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// traversed by the cycle collector if the busy count is zero.
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RefPtr<WorkerPrivate> mSelfRef;
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WorkerPrivateParent(JSContext* aCx, WorkerPrivate* aParent,
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const nsAString& aScriptURL, bool aIsChromeWorker,
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WorkerType aWorkerType,
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const nsACString& aSharedWorkerName,
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WorkerLoadInfo& aLoadInfo);
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~WorkerPrivateParent();
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private:
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Derived*
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ParentAsWorkerPrivate() const
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{
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return static_cast<Derived*>(const_cast<WorkerPrivateParent*>(this));
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}
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// aCx is null when called from the finalizer
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bool
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NotifyPrivate(Status aStatus);
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// aCx is null when called from the finalizer
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bool
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TerminatePrivate(JSContext* aCx)
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{
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return NotifyPrivate(Terminating);
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}
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void
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PostMessageInternal(JSContext* aCx, JS::Handle<JS::Value> aMessage,
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const Optional<Sequence<JS::Value>>& aTransferable,
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UniquePtr<ServiceWorkerClientInfo>&& aClientInfo,
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ErrorResult& aRv);
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nsresult
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DispatchPrivate(already_AddRefed<WorkerRunnable>&& aRunnable, nsIEventTarget* aSyncLoopTarget);
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public:
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virtual JSObject*
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WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(WorkerPrivateParent,
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DOMEventTargetHelper)
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void
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EnableDebugger();
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void
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DisableDebugger();
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void
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ClearSelfRef()
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{
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AssertIsOnParentThread();
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MOZ_ASSERT(mSelfRef);
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mSelfRef = nullptr;
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}
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nsresult
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Dispatch(already_AddRefed<WorkerRunnable>&& aRunnable)
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{
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return DispatchPrivate(Move(aRunnable), nullptr);
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}
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nsresult
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DispatchControlRunnable(already_AddRefed<WorkerControlRunnable>&& aWorkerControlRunnable);
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nsresult
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DispatchDebuggerRunnable(already_AddRefed<WorkerRunnable>&& aDebuggerRunnable);
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already_AddRefed<WorkerRunnable>
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MaybeWrapAsWorkerRunnable(already_AddRefed<nsIRunnable>&& aRunnable);
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already_AddRefed<nsIEventTarget>
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GetEventTarget();
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// May be called on any thread...
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bool
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Start();
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// Called on the parent thread.
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bool
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Notify(Status aStatus)
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{
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return NotifyPrivate(aStatus);
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}
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bool
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Cancel()
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{
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return Notify(Canceling);
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}
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bool
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Kill(JSContext* aCx)
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{
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return Notify(Killing);
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}
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// We can assume that an nsPIDOMWindow will be available for Freeze, Thaw
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// as these are only used for globals going in and out of the bfcache.
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//
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// XXXbz: This is a bald-faced lie given the uses in RegisterSharedWorker and
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// CloseSharedWorkersForWindow, which pass null for aWindow to Thaw and Freeze
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// respectively. See bug 1251722.
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bool
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Freeze(nsPIDOMWindowInner* aWindow);
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bool
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Thaw(nsPIDOMWindowInner* aWindow);
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void
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Suspend();
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void
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Resume();
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bool
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Terminate(JSContext* aCx)
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{
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AssertIsOnParentThread();
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return TerminatePrivate(aCx);
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}
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bool
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Close();
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bool
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ModifyBusyCount(bool aIncrease);
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void
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ForgetOverridenLoadGroup(nsCOMPtr<nsILoadGroup>& aLoadGroupOut);
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void
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ForgetMainThreadObjects(nsTArray<nsCOMPtr<nsISupports> >& aDoomed);
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void
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PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
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const Optional<Sequence<JS::Value>>& aTransferable,
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ErrorResult& aRv);
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void
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PostMessageToServiceWorker(JSContext* aCx, JS::Handle<JS::Value> aMessage,
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const Optional<Sequence<JS::Value>>& aTransferable,
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UniquePtr<ServiceWorkerClientInfo>&& aClientInfo,
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ErrorResult& aRv);
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void
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UpdateRuntimeOptions(const JS::RuntimeOptions& aRuntimeOptions);
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void
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UpdateLanguages(const nsTArray<nsString>& aLanguages);
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void
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UpdatePreference(WorkerPreference aPref, bool aValue);
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void
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UpdateJSWorkerMemoryParameter(JSGCParamKey key, uint32_t value);
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#ifdef JS_GC_ZEAL
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void
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UpdateGCZeal(uint8_t aGCZeal, uint32_t aFrequency);
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#endif
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void
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GarbageCollect(bool aShrinking);
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void
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CycleCollect(bool aDummy);
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void
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OfflineStatusChangeEvent(bool aIsOffline);
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bool
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RegisterSharedWorker(SharedWorker* aSharedWorker, MessagePort* aPort);
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void
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BroadcastErrorToSharedWorkers(JSContext* aCx,
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const nsAString& aMessage,
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const nsAString& aFilename,
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const nsAString& aLine,
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uint32_t aLineNumber,
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uint32_t aColumnNumber,
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uint32_t aFlags);
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void
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WorkerScriptLoaded();
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void
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QueueRunnable(nsIRunnable* aRunnable)
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{
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AssertIsOnMainThread();
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mQueuedRunnables.AppendElement(aRunnable);
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}
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WorkerPrivate*
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GetParent() const
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{
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return mParent;
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}
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bool
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IsFrozen() const
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{
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AssertIsOnParentThread();
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return mParentFrozen;
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}
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bool
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IsSuspended() const
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{
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AssertIsOnParentThread();
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return mParentSuspended;
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}
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bool
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IsAcceptingEvents()
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{
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AssertIsOnParentThread();
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MutexAutoLock lock(mMutex);
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return mParentStatus < Terminating;
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}
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Status
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ParentStatus() const
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{
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mMutex.AssertCurrentThreadOwns();
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return mParentStatus;
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}
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JSContext*
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ParentJSContext() const;
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nsIScriptContext*
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GetScriptContext() const
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{
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AssertIsOnMainThread();
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return mLoadInfo.mScriptContext;
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}
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const nsString&
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ScriptURL() const
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{
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return mScriptURL;
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}
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const nsCString&
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Domain() const
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{
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return mLoadInfo.mDomain;
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}
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bool
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IsFromWindow() const
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{
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return mLoadInfo.mFromWindow;
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}
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uint64_t
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WindowID() const
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{
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return mLoadInfo.mWindowID;
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}
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uint64_t
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ServiceWorkerID() const
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{
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return mLoadInfo.mServiceWorkerID;
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}
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nsIURI*
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GetBaseURI() const
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{
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AssertIsOnMainThread();
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return mLoadInfo.mBaseURI;
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}
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void
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SetBaseURI(nsIURI* aBaseURI);
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nsIURI*
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GetResolvedScriptURI() const
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{
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AssertIsOnMainThread();
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return mLoadInfo.mResolvedScriptURI;
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}
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const nsString&
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ServiceWorkerCacheName() const
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{
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MOZ_ASSERT(IsServiceWorker());
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AssertIsOnMainThread();
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return mLoadInfo.mServiceWorkerCacheName;
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}
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const ChannelInfo&
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GetChannelInfo() const
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{
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return mLoadInfo.mChannelInfo;
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}
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void
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SetChannelInfo(const ChannelInfo& aChannelInfo)
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(!mLoadInfo.mChannelInfo.IsInitialized());
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MOZ_ASSERT(aChannelInfo.IsInitialized());
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mLoadInfo.mChannelInfo = aChannelInfo;
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}
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void
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InitChannelInfo(nsIChannel* aChannel)
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{
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mLoadInfo.mChannelInfo.InitFromChannel(aChannel);
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}
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void
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InitChannelInfo(const ChannelInfo& aChannelInfo)
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{
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mLoadInfo.mChannelInfo = aChannelInfo;
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}
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// This is used to handle importScripts(). When the worker is first loaded
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// and executed, it happens in a sync loop. At this point it sets
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// mLoadingWorkerScript to true. importScripts() calls that occur during the
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// execution run in nested sync loops and so this continues to return true,
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// leading to these scripts being cached offline.
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// mLoadingWorkerScript is set to false when the top level loop ends.
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// importScripts() in function calls or event handlers are always fetched
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// from the network.
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bool
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LoadScriptAsPartOfLoadingServiceWorkerScript()
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{
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MOZ_ASSERT(IsServiceWorker());
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return mLoadingWorkerScript;
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}
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void
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SetLoadingWorkerScript(bool aLoadingWorkerScript)
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{
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// any thread
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MOZ_ASSERT(IsServiceWorker());
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mLoadingWorkerScript = aLoadingWorkerScript;
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}
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TimeStamp CreationTimeStamp() const
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{
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return mCreationTimeStamp;
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}
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DOMHighResTimeStamp CreationTime() const
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{
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return mCreationTimeHighRes;
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}
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TimeStamp NowBaseTimeStamp() const
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{
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return mNowBaseTimeStamp;
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}
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DOMHighResTimeStamp NowBaseTime() const
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{
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return mNowBaseTimeHighRes;
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}
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nsIPrincipal*
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GetPrincipal() const
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{
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AssertIsOnMainThread();
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return mLoadInfo.mPrincipal;
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}
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nsILoadGroup*
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GetLoadGroup() const
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{
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AssertIsOnMainThread();
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return mLoadInfo.mLoadGroup;
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}
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// This method allows the principal to be retrieved off the main thread.
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// Principals are main-thread objects so the caller must ensure that all
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// access occurs on the main thread.
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nsIPrincipal*
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GetPrincipalDontAssertMainThread() const
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{
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return mLoadInfo.mPrincipal;
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}
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void
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SetPrincipal(nsIPrincipal* aPrincipal, nsILoadGroup* aLoadGroup);
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bool
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UsesSystemPrincipal() const
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{
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return mLoadInfo.mPrincipalIsSystem;
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}
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bool
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IsInPrivilegedApp() const
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{
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return mLoadInfo.mIsInPrivilegedApp;
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}
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bool
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IsInCertifiedApp() const
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{
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return mLoadInfo.mIsInCertifiedApp;
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}
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const PrincipalInfo&
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GetPrincipalInfo() const
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{
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return *mLoadInfo.mPrincipalInfo;
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}
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already_AddRefed<nsIChannel>
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ForgetWorkerChannel()
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{
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AssertIsOnMainThread();
|
|
return mLoadInfo.mChannel.forget();
|
|
}
|
|
|
|
nsIDocument* GetDocument() const;
|
|
|
|
nsPIDOMWindowInner*
|
|
GetWindow()
|
|
{
|
|
AssertIsOnMainThread();
|
|
return mLoadInfo.mWindow;
|
|
}
|
|
|
|
nsIContentSecurityPolicy*
|
|
GetCSP() const
|
|
{
|
|
AssertIsOnMainThread();
|
|
return mLoadInfo.mCSP;
|
|
}
|
|
|
|
void
|
|
SetCSP(nsIContentSecurityPolicy* aCSP)
|
|
{
|
|
AssertIsOnMainThread();
|
|
mLoadInfo.mCSP = aCSP;
|
|
}
|
|
|
|
bool
|
|
IsEvalAllowed() const
|
|
{
|
|
return mLoadInfo.mEvalAllowed;
|
|
}
|
|
|
|
void
|
|
SetEvalAllowed(bool aEvalAllowed)
|
|
{
|
|
mLoadInfo.mEvalAllowed = aEvalAllowed;
|
|
}
|
|
|
|
bool
|
|
GetReportCSPViolations() const
|
|
{
|
|
return mLoadInfo.mReportCSPViolations;
|
|
}
|
|
|
|
bool
|
|
XHRParamsAllowed() const
|
|
{
|
|
return mLoadInfo.mXHRParamsAllowed;
|
|
}
|
|
|
|
void
|
|
SetXHRParamsAllowed(bool aAllowed)
|
|
{
|
|
mLoadInfo.mXHRParamsAllowed = aAllowed;
|
|
}
|
|
|
|
LocationInfo&
|
|
GetLocationInfo()
|
|
{
|
|
return mLocationInfo;
|
|
}
|
|
|
|
void
|
|
CopyJSSettings(JSSettings& aSettings)
|
|
{
|
|
mozilla::MutexAutoLock lock(mMutex);
|
|
aSettings = mJSSettings;
|
|
}
|
|
|
|
void
|
|
CopyJSCompartmentOptions(JS::CompartmentOptions& aOptions)
|
|
{
|
|
mozilla::MutexAutoLock lock(mMutex);
|
|
aOptions = IsChromeWorker() ? mJSSettings.chrome.compartmentOptions
|
|
: mJSSettings.content.compartmentOptions;
|
|
}
|
|
|
|
// The ability to be a chrome worker is orthogonal to the type of
|
|
// worker [Dedicated|Shared|Service].
|
|
bool
|
|
IsChromeWorker() const
|
|
{
|
|
return mIsChromeWorker;
|
|
}
|
|
|
|
WorkerType
|
|
Type() const
|
|
{
|
|
return mWorkerType;
|
|
}
|
|
|
|
bool
|
|
IsDedicatedWorker() const
|
|
{
|
|
return mWorkerType == WorkerTypeDedicated;
|
|
}
|
|
|
|
bool
|
|
IsSharedWorker() const
|
|
{
|
|
return mWorkerType == WorkerTypeShared;
|
|
}
|
|
|
|
bool
|
|
IsServiceWorker() const
|
|
{
|
|
return mWorkerType == WorkerTypeService;
|
|
}
|
|
|
|
nsContentPolicyType
|
|
ContentPolicyType() const
|
|
{
|
|
return ContentPolicyType(mWorkerType);
|
|
}
|
|
|
|
static nsContentPolicyType
|
|
ContentPolicyType(WorkerType aWorkerType)
|
|
{
|
|
switch (aWorkerType) {
|
|
case WorkerTypeDedicated:
|
|
return nsIContentPolicy::TYPE_INTERNAL_WORKER;
|
|
case WorkerTypeShared:
|
|
return nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER;
|
|
case WorkerTypeService:
|
|
return nsIContentPolicy::TYPE_INTERNAL_SERVICE_WORKER;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Invalid worker type");
|
|
return nsIContentPolicy::TYPE_INVALID;
|
|
}
|
|
}
|
|
|
|
const nsCString&
|
|
WorkerName() const
|
|
{
|
|
MOZ_ASSERT(IsServiceWorker() || IsSharedWorker());
|
|
return mWorkerName;
|
|
}
|
|
|
|
bool
|
|
IsStorageAllowed() const
|
|
{
|
|
return mLoadInfo.mStorageAllowed;
|
|
}
|
|
|
|
bool
|
|
IsInPrivateBrowsing() const
|
|
{
|
|
return mLoadInfo.mPrivateBrowsing;
|
|
}
|
|
|
|
// Determine if the SW testing per-window flag is set by devtools
|
|
bool
|
|
ServiceWorkersTestingInWindow() const
|
|
{
|
|
return mLoadInfo.mServiceWorkersTestingInWindow;
|
|
}
|
|
|
|
void
|
|
GetAllSharedWorkers(nsTArray<RefPtr<SharedWorker>>& aSharedWorkers);
|
|
|
|
void
|
|
CloseSharedWorkersForWindow(nsPIDOMWindowInner* aWindow);
|
|
|
|
void
|
|
CloseAllSharedWorkers();
|
|
|
|
void
|
|
UpdateOverridenLoadGroup(nsILoadGroup* aBaseLoadGroup);
|
|
|
|
already_AddRefed<nsIRunnable>
|
|
StealLoadFailedAsyncRunnable()
|
|
{
|
|
return mLoadInfo.mLoadFailedAsyncRunnable.forget();
|
|
}
|
|
|
|
IMPL_EVENT_HANDLER(message)
|
|
IMPL_EVENT_HANDLER(error)
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
AssertIsOnParentThread() const;
|
|
|
|
void
|
|
AssertInnerWindowIsCorrect() const;
|
|
#else
|
|
void
|
|
AssertIsOnParentThread() const
|
|
{ }
|
|
|
|
void
|
|
AssertInnerWindowIsCorrect() const
|
|
{ }
|
|
#endif
|
|
};
|
|
|
|
class WorkerDebugger : public nsIWorkerDebugger {
|
|
friend class ::ReportDebuggerErrorRunnable;
|
|
friend class ::PostDebuggerMessageRunnable;
|
|
|
|
WorkerPrivate* mWorkerPrivate;
|
|
bool mIsInitialized;
|
|
nsTArray<nsCOMPtr<nsIWorkerDebuggerListener>> mListeners;
|
|
|
|
public:
|
|
explicit WorkerDebugger(WorkerPrivate* aWorkerPrivate);
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIWORKERDEBUGGER
|
|
|
|
void
|
|
AssertIsOnParentThread();
|
|
|
|
void
|
|
Close();
|
|
|
|
void
|
|
PostMessageToDebugger(const nsAString& aMessage);
|
|
|
|
void
|
|
ReportErrorToDebugger(const nsAString& aFilename, uint32_t aLineno,
|
|
const nsAString& aMessage);
|
|
|
|
private:
|
|
virtual
|
|
~WorkerDebugger();
|
|
|
|
void
|
|
PostMessageToDebuggerOnMainThread(const nsAString& aMessage);
|
|
|
|
void
|
|
ReportErrorToDebuggerOnMainThread(const nsAString& aFilename,
|
|
uint32_t aLineno,
|
|
const nsAString& aMessage);
|
|
};
|
|
|
|
class WorkerPrivate : public WorkerPrivateParent<WorkerPrivate>
|
|
{
|
|
friend class WorkerPrivateParent<WorkerPrivate>;
|
|
typedef WorkerPrivateParent<WorkerPrivate> ParentType;
|
|
friend class AutoSyncLoopHolder;
|
|
|
|
struct TimeoutInfo;
|
|
|
|
class MemoryReporter;
|
|
friend class MemoryReporter;
|
|
|
|
friend class WorkerThread;
|
|
|
|
enum GCTimerMode
|
|
{
|
|
PeriodicTimer = 0,
|
|
IdleTimer,
|
|
NoTimer
|
|
};
|
|
|
|
bool mDebuggerRegistered;
|
|
WorkerDebugger* mDebugger;
|
|
|
|
Queue<WorkerControlRunnable*, 4> mControlQueue;
|
|
Queue<WorkerRunnable*, 4> mDebuggerQueue;
|
|
|
|
// Touched on multiple threads, protected with mMutex.
|
|
JSContext* mJSContext;
|
|
RefPtr<WorkerCrossThreadDispatcher> mCrossThreadDispatcher;
|
|
nsTArray<nsCOMPtr<nsIRunnable>> mUndispatchedRunnablesForSyncLoop;
|
|
RefPtr<WorkerThread> mThread;
|
|
PRThread* mPRThread;
|
|
|
|
// Things touched on worker thread only.
|
|
RefPtr<WorkerGlobalScope> mScope;
|
|
RefPtr<WorkerDebuggerGlobalScope> mDebuggerScope;
|
|
nsTArray<ParentType*> mChildWorkers;
|
|
nsTObserverArray<WorkerFeature*> mFeatures;
|
|
nsTArray<nsAutoPtr<TimeoutInfo>> mTimeouts;
|
|
uint32_t mDebuggerEventLoopLevel;
|
|
|
|
struct SyncLoopInfo
|
|
{
|
|
explicit SyncLoopInfo(EventTarget* aEventTarget);
|
|
|
|
RefPtr<EventTarget> mEventTarget;
|
|
bool mCompleted;
|
|
bool mResult;
|
|
#ifdef DEBUG
|
|
bool mHasRun;
|
|
#endif
|
|
};
|
|
|
|
// This is only modified on the worker thread, but in DEBUG builds
|
|
// AssertValidSyncLoop function iterates it on other threads. Therefore
|
|
// modifications are done with mMutex held *only* in DEBUG builds.
|
|
nsTArray<nsAutoPtr<SyncLoopInfo>> mSyncLoopStack;
|
|
|
|
nsCOMPtr<nsITimer> mTimer;
|
|
nsCOMPtr<nsITimerCallback> mTimerRunnable;
|
|
|
|
nsCOMPtr<nsITimer> mGCTimer;
|
|
nsCOMPtr<nsIEventTarget> mPeriodicGCTimerTarget;
|
|
nsCOMPtr<nsIEventTarget> mIdleGCTimerTarget;
|
|
|
|
RefPtr<MemoryReporter> mMemoryReporter;
|
|
|
|
// fired on the main thread if the worker script fails to load
|
|
nsCOMPtr<nsIRunnable> mLoadFailedRunnable;
|
|
|
|
TimeStamp mKillTime;
|
|
uint32_t mErrorHandlerRecursionCount;
|
|
uint32_t mNextTimeoutId;
|
|
Status mStatus;
|
|
bool mFrozen;
|
|
bool mTimerRunning;
|
|
bool mRunningExpiredTimeouts;
|
|
bool mCloseHandlerStarted;
|
|
bool mCloseHandlerFinished;
|
|
bool mPendingEventQueueClearing;
|
|
bool mMemoryReporterRunning;
|
|
bool mBlockedForMemoryReporter;
|
|
bool mCancelAllPendingRunnables;
|
|
bool mPeriodicGCTimerRunning;
|
|
bool mIdleGCTimerRunning;
|
|
bool mWorkerScriptExecutedSuccessfully;
|
|
bool mPreferences[WORKERPREF_COUNT];
|
|
bool mOnLine;
|
|
|
|
protected:
|
|
~WorkerPrivate();
|
|
|
|
public:
|
|
static already_AddRefed<WorkerPrivate>
|
|
Constructor(const GlobalObject& aGlobal, const nsAString& aScriptURL,
|
|
ErrorResult& aRv);
|
|
|
|
static already_AddRefed<WorkerPrivate>
|
|
Constructor(const GlobalObject& aGlobal, const nsAString& aScriptURL,
|
|
bool aIsChromeWorker, WorkerType aWorkerType,
|
|
const nsACString& aSharedWorkerName,
|
|
WorkerLoadInfo* aLoadInfo, ErrorResult& aRv);
|
|
|
|
static already_AddRefed<WorkerPrivate>
|
|
Constructor(JSContext* aCx, const nsAString& aScriptURL, bool aIsChromeWorker,
|
|
WorkerType aWorkerType, const nsACString& aSharedWorkerName,
|
|
WorkerLoadInfo* aLoadInfo, ErrorResult& aRv);
|
|
|
|
static bool
|
|
WorkerAvailable(JSContext* /* unused */, JSObject* /* unused */);
|
|
|
|
enum LoadGroupBehavior
|
|
{
|
|
InheritLoadGroup,
|
|
OverrideLoadGroup
|
|
};
|
|
|
|
static nsresult
|
|
GetLoadInfo(JSContext* aCx, nsPIDOMWindowInner* aWindow,
|
|
WorkerPrivate* aParent,
|
|
const nsAString& aScriptURL, bool aIsChromeWorker,
|
|
LoadGroupBehavior aLoadGroupBehavior, WorkerType aWorkerType,
|
|
WorkerLoadInfo* aLoadInfo);
|
|
|
|
static void
|
|
OverrideLoadInfoLoadGroup(WorkerLoadInfo& aLoadInfo);
|
|
|
|
bool
|
|
IsDebuggerRegistered()
|
|
{
|
|
AssertIsOnMainThread();
|
|
|
|
// No need to lock here since this is only ever modified by the same thread.
|
|
return mDebuggerRegistered;
|
|
}
|
|
|
|
void
|
|
SetIsDebuggerRegistered(bool aDebuggerRegistered)
|
|
{
|
|
AssertIsOnMainThread();
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
MOZ_ASSERT(mDebuggerRegistered != aDebuggerRegistered);
|
|
mDebuggerRegistered = aDebuggerRegistered;
|
|
|
|
mCondVar.Notify();
|
|
}
|
|
|
|
void
|
|
WaitForIsDebuggerRegistered(bool aDebuggerRegistered)
|
|
{
|
|
AssertIsOnParentThread();
|
|
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
while (mDebuggerRegistered != aDebuggerRegistered) {
|
|
mCondVar.Wait();
|
|
}
|
|
}
|
|
|
|
WorkerDebugger*
|
|
Debugger() const
|
|
{
|
|
AssertIsOnMainThread();
|
|
|
|
MOZ_ASSERT(mDebugger);
|
|
return mDebugger;
|
|
}
|
|
|
|
void
|
|
SetDebugger(WorkerDebugger* aDebugger)
|
|
{
|
|
AssertIsOnMainThread();
|
|
|
|
MOZ_ASSERT(mDebugger != aDebugger);
|
|
mDebugger = aDebugger;
|
|
}
|
|
|
|
void
|
|
DoRunLoop(JSContext* aCx);
|
|
|
|
bool
|
|
InterruptCallback(JSContext* aCx);
|
|
|
|
nsresult
|
|
IsOnCurrentThread(bool* aIsOnCurrentThread);
|
|
|
|
bool
|
|
CloseInternal(JSContext* aCx)
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return NotifyInternal(aCx, Closing);
|
|
}
|
|
|
|
bool
|
|
FreezeInternal(JSContext* aCx);
|
|
|
|
bool
|
|
ThawInternal(JSContext* aCx);
|
|
|
|
void
|
|
TraceTimeouts(const TraceCallbacks& aCallbacks, void* aClosure) const;
|
|
|
|
bool
|
|
ModifyBusyCountFromWorker(bool aIncrease);
|
|
|
|
bool
|
|
AddChildWorker(JSContext* aCx, ParentType* aChildWorker);
|
|
|
|
void
|
|
RemoveChildWorker(JSContext* aCx, ParentType* aChildWorker);
|
|
|
|
bool
|
|
AddFeature(JSContext* aCx, WorkerFeature* aFeature);
|
|
|
|
void
|
|
RemoveFeature(JSContext* aCx, WorkerFeature* aFeature);
|
|
|
|
void
|
|
NotifyFeatures(JSContext* aCx, Status aStatus);
|
|
|
|
bool
|
|
HasActiveFeatures()
|
|
{
|
|
return !(mChildWorkers.IsEmpty() && mTimeouts.IsEmpty() &&
|
|
mFeatures.IsEmpty());
|
|
}
|
|
|
|
void
|
|
PostMessageToParent(JSContext* aCx,
|
|
JS::Handle<JS::Value> aMessage,
|
|
const Optional<Sequence<JS::Value>>& aTransferable,
|
|
ErrorResult& aRv)
|
|
{
|
|
PostMessageToParentInternal(aCx, aMessage, aTransferable, aRv);
|
|
}
|
|
|
|
void
|
|
PostMessageToParentMessagePort(
|
|
JSContext* aCx,
|
|
JS::Handle<JS::Value> aMessage,
|
|
const Optional<Sequence<JS::Value>>& aTransferable,
|
|
ErrorResult& aRv);
|
|
|
|
void
|
|
EnterDebuggerEventLoop();
|
|
|
|
void
|
|
LeaveDebuggerEventLoop();
|
|
|
|
void
|
|
PostMessageToDebugger(const nsAString& aMessage);
|
|
|
|
void
|
|
SetDebuggerImmediate(Function& aHandler, ErrorResult& aRv);
|
|
|
|
void
|
|
ReportErrorToDebugger(const nsAString& aFilename, uint32_t aLineno,
|
|
const nsAString& aMessage);
|
|
|
|
bool
|
|
NotifyInternal(JSContext* aCx, Status aStatus);
|
|
|
|
void
|
|
ReportError(JSContext* aCx, const char* aMessage, JSErrorReport* aReport);
|
|
|
|
int32_t
|
|
SetTimeout(JSContext* aCx,
|
|
Function* aHandler,
|
|
const nsAString& aStringHandler,
|
|
int32_t aTimeout,
|
|
const Sequence<JS::Value>& aArguments,
|
|
bool aIsInterval,
|
|
ErrorResult& aRv);
|
|
|
|
void
|
|
ClearTimeout(int32_t aId);
|
|
|
|
bool
|
|
RunExpiredTimeouts(JSContext* aCx);
|
|
|
|
bool
|
|
RescheduleTimeoutTimer(JSContext* aCx);
|
|
|
|
void
|
|
CloseHandlerStarted()
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
mCloseHandlerStarted = true;
|
|
}
|
|
|
|
void
|
|
CloseHandlerFinished()
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
mCloseHandlerFinished = true;
|
|
}
|
|
|
|
void
|
|
UpdateRuntimeOptionsInternal(JSContext* aCx, const JS::RuntimeOptions& aRuntimeOptions);
|
|
|
|
void
|
|
UpdateLanguagesInternal(const nsTArray<nsString>& aLanguages);
|
|
|
|
void
|
|
UpdatePreferenceInternal(WorkerPreference aPref, bool aValue);
|
|
|
|
void
|
|
UpdateJSWorkerMemoryParameterInternal(JSContext* aCx, JSGCParamKey key, uint32_t aValue);
|
|
|
|
enum WorkerRanOrNot {
|
|
WorkerNeverRan = 0,
|
|
WorkerRan
|
|
};
|
|
|
|
void
|
|
ScheduleDeletion(WorkerRanOrNot aRanOrNot);
|
|
|
|
bool
|
|
BlockAndCollectRuntimeStats(JS::RuntimeStats* aRtStats, bool aAnonymize);
|
|
|
|
#ifdef JS_GC_ZEAL
|
|
void
|
|
UpdateGCZealInternal(JSContext* aCx, uint8_t aGCZeal, uint32_t aFrequency);
|
|
#endif
|
|
|
|
void
|
|
GarbageCollectInternal(JSContext* aCx, bool aShrinking,
|
|
bool aCollectChildren);
|
|
|
|
void
|
|
CycleCollectInternal(bool aCollectChildren);
|
|
|
|
void
|
|
OfflineStatusChangeEventInternal(bool aIsOffline);
|
|
|
|
JSContext*
|
|
GetJSContext() const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return mJSContext;
|
|
}
|
|
|
|
WorkerGlobalScope*
|
|
GlobalScope() const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return mScope;
|
|
}
|
|
|
|
WorkerDebuggerGlobalScope*
|
|
DebuggerGlobalScope() const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return mDebuggerScope;
|
|
}
|
|
|
|
void
|
|
SetThread(WorkerThread* aThread);
|
|
|
|
void
|
|
AssertIsOnWorkerThread() const
|
|
#ifdef DEBUG
|
|
;
|
|
#else
|
|
{ }
|
|
#endif
|
|
|
|
WorkerCrossThreadDispatcher*
|
|
GetCrossThreadDispatcher();
|
|
|
|
// This may block!
|
|
void
|
|
BeginCTypesCall();
|
|
|
|
// This may block!
|
|
void
|
|
EndCTypesCall();
|
|
|
|
void
|
|
BeginCTypesCallback()
|
|
{
|
|
// If a callback is beginning then we need to do the exact same thing as
|
|
// when a ctypes call ends.
|
|
EndCTypesCall();
|
|
}
|
|
|
|
void
|
|
EndCTypesCallback()
|
|
{
|
|
// If a callback is ending then we need to do the exact same thing as
|
|
// when a ctypes call begins.
|
|
BeginCTypesCall();
|
|
}
|
|
|
|
bool
|
|
ConnectMessagePort(JSContext* aCx, MessagePortIdentifier& aIdentifier);
|
|
|
|
WorkerGlobalScope*
|
|
GetOrCreateGlobalScope(JSContext* aCx);
|
|
|
|
WorkerDebuggerGlobalScope*
|
|
CreateDebuggerGlobalScope(JSContext* aCx);
|
|
|
|
bool
|
|
RegisterBindings(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
|
|
|
|
bool
|
|
RegisterDebuggerBindings(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
|
|
|
|
#define WORKER_SIMPLE_PREF(name, getter, NAME) \
|
|
bool \
|
|
getter() const \
|
|
{ \
|
|
AssertIsOnWorkerThread(); \
|
|
return mPreferences[WORKERPREF_##NAME]; \
|
|
}
|
|
#define WORKER_PREF(name, callback)
|
|
#include "WorkerPrefs.h"
|
|
#undef WORKER_SIMPLE_PREF
|
|
#undef WORKER_PREF
|
|
|
|
bool
|
|
OnLine() const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return mOnLine;
|
|
}
|
|
|
|
void
|
|
StopSyncLoop(nsIEventTarget* aSyncLoopTarget, bool aResult);
|
|
|
|
bool
|
|
AllPendingRunnablesShouldBeCanceled() const
|
|
{
|
|
return mCancelAllPendingRunnables;
|
|
}
|
|
|
|
void
|
|
ClearMainEventQueue(WorkerRanOrNot aRanOrNot);
|
|
|
|
void
|
|
ClearDebuggerEventQueue();
|
|
|
|
void
|
|
OnProcessNextEvent();
|
|
|
|
void
|
|
AfterProcessNextEvent();
|
|
|
|
void
|
|
AssertValidSyncLoop(nsIEventTarget* aSyncLoopTarget)
|
|
#ifdef DEBUG
|
|
;
|
|
#else
|
|
{ }
|
|
#endif
|
|
|
|
void
|
|
SetWorkerScriptExecutedSuccessfully()
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
// Should only be called once!
|
|
MOZ_ASSERT(!mWorkerScriptExecutedSuccessfully);
|
|
mWorkerScriptExecutedSuccessfully = true;
|
|
}
|
|
|
|
// Only valid after CompileScriptRunnable has finished running!
|
|
bool
|
|
WorkerScriptExecutedSuccessfully() const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
return mWorkerScriptExecutedSuccessfully;
|
|
}
|
|
|
|
void
|
|
MaybeDispatchLoadFailedRunnable();
|
|
|
|
private:
|
|
WorkerPrivate(JSContext* aCx, WorkerPrivate* aParent,
|
|
const nsAString& aScriptURL, bool aIsChromeWorker,
|
|
WorkerType aWorkerType, const nsACString& aSharedWorkerName,
|
|
WorkerLoadInfo& aLoadInfo);
|
|
|
|
bool
|
|
MayContinueRunning()
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
|
|
Status status;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
status = mStatus;
|
|
}
|
|
|
|
if (status >= Killing) {
|
|
return false;
|
|
}
|
|
if (status >= Running) {
|
|
return mKillTime.IsNull() || RemainingRunTimeMS() > 0;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
uint32_t
|
|
RemainingRunTimeMS() const;
|
|
|
|
void
|
|
CancelAllTimeouts();
|
|
|
|
bool
|
|
ScheduleKillCloseEventRunnable(JSContext* aCx);
|
|
|
|
bool
|
|
ProcessAllControlRunnables()
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
return ProcessAllControlRunnablesLocked();
|
|
}
|
|
|
|
bool
|
|
ProcessAllControlRunnablesLocked();
|
|
|
|
void
|
|
EnableMemoryReporter();
|
|
|
|
void
|
|
DisableMemoryReporter();
|
|
|
|
void
|
|
WaitForWorkerEvents(PRIntervalTime interval = PR_INTERVAL_NO_TIMEOUT);
|
|
|
|
void
|
|
PostMessageToParentInternal(JSContext* aCx,
|
|
JS::Handle<JS::Value> aMessage,
|
|
const Optional<Sequence<JS::Value>>& aTransferable,
|
|
ErrorResult& aRv);
|
|
|
|
void
|
|
GetAllPreferences(bool aPreferences[WORKERPREF_COUNT]) const
|
|
{
|
|
AssertIsOnWorkerThread();
|
|
memcpy(aPreferences, mPreferences, WORKERPREF_COUNT * sizeof(bool));
|
|
}
|
|
|
|
already_AddRefed<nsIEventTarget>
|
|
CreateNewSyncLoop();
|
|
|
|
bool
|
|
RunCurrentSyncLoop();
|
|
|
|
bool
|
|
DestroySyncLoop(uint32_t aLoopIndex, nsIThreadInternal* aThread = nullptr);
|
|
|
|
void
|
|
InitializeGCTimers();
|
|
|
|
void
|
|
SetGCTimerMode(GCTimerMode aMode);
|
|
|
|
void
|
|
ShutdownGCTimers();
|
|
};
|
|
|
|
// This class is only used to trick the DOM bindings. We never create
|
|
// instances of it, and static_casting to it is fine since it doesn't add
|
|
// anything to WorkerPrivate.
|
|
class ChromeWorkerPrivate : public WorkerPrivate
|
|
{
|
|
public:
|
|
static already_AddRefed<ChromeWorkerPrivate>
|
|
Constructor(const GlobalObject& aGlobal, const nsAString& aScriptURL,
|
|
ErrorResult& rv);
|
|
|
|
static bool
|
|
WorkerAvailable(JSContext* aCx, JSObject* /* unused */);
|
|
|
|
private:
|
|
ChromeWorkerPrivate() = delete;
|
|
ChromeWorkerPrivate(const ChromeWorkerPrivate& aRHS) = delete;
|
|
ChromeWorkerPrivate& operator =(const ChromeWorkerPrivate& aRHS) = delete;
|
|
};
|
|
|
|
WorkerPrivate*
|
|
GetWorkerPrivateFromContext(JSContext* aCx);
|
|
|
|
WorkerPrivate*
|
|
GetCurrentThreadWorkerPrivate();
|
|
|
|
bool
|
|
IsCurrentThreadRunningChromeWorker();
|
|
|
|
JSContext*
|
|
GetCurrentThreadJSContext();
|
|
|
|
JSObject*
|
|
GetCurrentThreadWorkerGlobal();
|
|
|
|
class AutoSyncLoopHolder
|
|
{
|
|
WorkerPrivate* mWorkerPrivate;
|
|
nsCOMPtr<nsIEventTarget> mTarget;
|
|
uint32_t mIndex;
|
|
|
|
public:
|
|
explicit AutoSyncLoopHolder(WorkerPrivate* aWorkerPrivate)
|
|
: mWorkerPrivate(aWorkerPrivate)
|
|
, mTarget(aWorkerPrivate->CreateNewSyncLoop())
|
|
, mIndex(aWorkerPrivate->mSyncLoopStack.Length() - 1)
|
|
{
|
|
aWorkerPrivate->AssertIsOnWorkerThread();
|
|
}
|
|
|
|
~AutoSyncLoopHolder()
|
|
{
|
|
if (mWorkerPrivate) {
|
|
mWorkerPrivate->AssertIsOnWorkerThread();
|
|
mWorkerPrivate->StopSyncLoop(mTarget, false);
|
|
mWorkerPrivate->DestroySyncLoop(mIndex);
|
|
}
|
|
}
|
|
|
|
bool
|
|
Run()
|
|
{
|
|
WorkerPrivate* workerPrivate = mWorkerPrivate;
|
|
mWorkerPrivate = nullptr;
|
|
|
|
workerPrivate->AssertIsOnWorkerThread();
|
|
|
|
return workerPrivate->RunCurrentSyncLoop();
|
|
}
|
|
|
|
nsIEventTarget*
|
|
EventTarget() const
|
|
{
|
|
return mTarget;
|
|
}
|
|
};
|
|
|
|
class TimerThreadEventTarget final : public nsIEventTarget
|
|
{
|
|
~TimerThreadEventTarget();
|
|
|
|
WorkerPrivate* mWorkerPrivate;
|
|
RefPtr<WorkerRunnable> mWorkerRunnable;
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
|
|
TimerThreadEventTarget(WorkerPrivate* aWorkerPrivate,
|
|
WorkerRunnable* aWorkerRunnable);
|
|
|
|
protected:
|
|
NS_IMETHOD
|
|
DispatchFromScript(nsIRunnable* aRunnable, uint32_t aFlags) override;
|
|
|
|
|
|
NS_IMETHOD
|
|
Dispatch(already_AddRefed<nsIRunnable>&& aRunnable, uint32_t aFlags) override;
|
|
|
|
NS_IMETHOD
|
|
IsOnCurrentThread(bool* aIsOnCurrentThread) override;
|
|
};
|
|
|
|
END_WORKERS_NAMESPACE
|
|
|
|
#endif /* mozilla_dom_workers_workerprivate_h__ */
|