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f001853338
This introduces a new type to ContentParent which acts as a weak handle to the actor and is safe to hold and manipulate from any thread. This replaces accesses of the `ContentParent` type from the background thread, as they were error-prone due to ContentParent not being threadsafe-refcounted. The bulk of this patch is piping the new type through to the places it is required, and removing now-unecessary extra complexity. Differential Revision: https://phabricator.services.mozilla.com/D162346
49 lines
1.6 KiB
C++
49 lines
1.6 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ipc_BackgroundStarterParent_h
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#define mozilla_ipc_BackgroundStarterParent_h
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#include "mozilla/ipc/PBackgroundStarterParent.h"
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#include "mozilla/dom/ContentParent.h"
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#include "nsISupportsImpl.h"
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namespace mozilla::ipc {
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class BackgroundStarterParent final : public PBackgroundStarterParent {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_MAIN_THREAD(
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BackgroundStarterParent, override)
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// Implemented in BackgroundImpl.cpp
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BackgroundStarterParent(mozilla::dom::ThreadsafeContentParentHandle* aContent,
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bool aCrossProcess);
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void SetLiveActorArray(nsTArray<IToplevelProtocol*>* aLiveActorArray);
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private:
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friend class PBackgroundStarterParent;
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~BackgroundStarterParent() = default;
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// Implemented in BackgroundImpl.cpp
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void ActorDestroy(ActorDestroyReason aReason) override;
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// Implemented in BackgroundImpl.cpp
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IPCResult RecvInitBackground(Endpoint<PBackgroundParent>&& aEndpoint);
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const bool mCrossProcess;
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const RefPtr<mozilla::dom::ThreadsafeContentParentHandle> mContent;
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// Set when the actor is opened successfully and used to handle shutdown
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// hangs. Only touched on the background thread.
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nsTArray<IToplevelProtocol*>* mLiveActorArray = nullptr;
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};
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} // namespace mozilla::ipc
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#endif // mozilla_ipc_BackgroundStarterParent_h
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