gecko-dev/dom/midi/MIDIPortParent.h
Alex Gaynor 0f01791ffc Bug 1512990 - Part 4 - remove declarations of Recv/Answer methods from IPDL protocol base class; r=froydnj
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
2019-02-06 15:58:43 +00:00

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1.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_MIDIPortParent_h
#define mozilla_dom_MIDIPortParent_h
#include "mozilla/dom/PMIDIPortParent.h"
#include "mozilla/dom/MIDIPortBinding.h"
#include "mozilla/dom/MIDIPortInterface.h"
// Header file contents
namespace mozilla {
namespace dom {
/**
* Actor representing the parent (PBackground thread) side of a MIDIPort object.
*
*/
class MIDIPortParent final : public PMIDIPortParent, public MIDIPortInterface {
public:
NS_INLINE_DECL_REFCOUNTING(MIDIPortParent);
void ActorDestroy(ActorDestroyReason) override;
mozilla::ipc::IPCResult RecvSend(nsTArray<MIDIMessage>&& aMsg);
mozilla::ipc::IPCResult RecvOpen();
mozilla::ipc::IPCResult RecvClose();
mozilla::ipc::IPCResult RecvClear();
mozilla::ipc::IPCResult RecvShutdown();
MOZ_IMPLICIT MIDIPortParent(const MIDIPortInfo& aPortInfo,
const bool aSysexEnabled);
// Sends the current port status to the child actor. May also send message
// buffer if required.
bool SendUpdateStatus(const MIDIPortDeviceState& aState,
const MIDIPortConnectionState& aConnection);
uint32_t GetInternalId() const { return mInternalId; }
void Teardown();
protected:
~MIDIPortParent() = default;
// Queue of messages that needs to be sent. Since sending a message on a
// closed port opens it, we sometimes have to buffer messages from the time
// Send() is called until the time we get a device state change to Opened.
nsTArray<MIDIMessage> mMessageQueue;
const uint32_t mInternalId;
};
} // namespace dom
} // namespace mozilla
#endif