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0f01791ffc
For cases where the class has direct calls (that is, we cast `this` to the subclass before making the call) no longer declare Recv/Answer methods on the base class at all. This should ensure that slots for them are not generated in vtables, and also allow the derived class to choose the method signature (e.g. whether it wants to take something by reference or by value). Differential Revision: https://phabricator.services.mozilla.com/D18132 --HG-- extra : moz-landing-system : lando
88 lines
2.6 KiB
C++
88 lines
2.6 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ipc_IPCBlobInputStreamParent_h
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#define mozilla_dom_ipc_IPCBlobInputStreamParent_h
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#include "mozilla/ipc/PIPCBlobInputStreamParent.h"
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class nsIInputStream;
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namespace mozilla {
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namespace dom {
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class NS_NO_VTABLE IPCBlobInputStreamParentCallback {
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public:
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virtual void ActorDestroyed(const nsID& aID) = 0;
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NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
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protected:
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virtual ~IPCBlobInputStreamParentCallback() {}
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};
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class IPCBlobInputStreamParent final
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: public mozilla::ipc::PIPCBlobInputStreamParent {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(IPCBlobInputStreamParent)
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// The size of the inputStream must be passed as argument in order to avoid
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// the use of nsIInputStream::Available() which could open a fileDescriptor in
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// case the stream is a nsFileStream.
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template <typename M>
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static already_AddRefed<IPCBlobInputStreamParent> Create(
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nsIInputStream* aInputStream, uint64_t aSize, uint64_t aChildID,
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nsresult* aRv, M* aManager);
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static already_AddRefed<IPCBlobInputStreamParent> Create(
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const nsID& aID, uint64_t aSize,
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mozilla::ipc::PBackgroundParent* aManager);
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void ActorDestroy(IProtocol::ActorDestroyReason aReason) override;
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const nsID& ID() const { return mID; }
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uint64_t Size() const { return mSize; }
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void SetCallback(IPCBlobInputStreamParentCallback* aCallback);
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mozilla::ipc::IPCResult RecvStreamNeeded();
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mozilla::ipc::IPCResult RecvLengthNeeded();
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mozilla::ipc::IPCResult RecvClose();
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mozilla::ipc::IPCResult Recv__delete__() override;
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bool HasValidStream() const;
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private:
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IPCBlobInputStreamParent(const nsID& aID, uint64_t aSize,
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nsIContentParent* aManager);
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IPCBlobInputStreamParent(const nsID& aID, uint64_t aSize,
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mozilla::ipc::PBackgroundParent* aManager);
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~IPCBlobInputStreamParent() = default;
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const nsID mID;
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const uint64_t mSize;
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// Only 1 of these 2 is set. Raw pointer because these 2 managers are keeping
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// the parent actor alive. The pointers will be nullified in ActorDestroyed.
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nsIContentParent* mContentManager;
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mozilla::ipc::PBackgroundParent* mPBackgroundManager;
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RefPtr<IPCBlobInputStreamParentCallback> mCallback;
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bool mMigrating;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_ipc_IPCBlobInputStreamParent_h
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