gecko-dev/dom/midi/MIDIManagerChild.cpp

45 строки
1.1 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/. */
#include "MIDIManagerChild.h"
#include "mozilla/dom/MIDIAccessManager.h"
using namespace mozilla::dom;
MIDIManagerChild::MIDIManagerChild()
: mShutdown(false)
{
}
mozilla::ipc::IPCResult
MIDIManagerChild::RecvMIDIPortListUpdate(const MIDIPortList& aPortList)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShutdown) {
return IPC_OK();
}
MOZ_ASSERT(MIDIAccessManager::IsRunning());
MIDIAccessManager::Get()->Update(aPortList);
return IPC_OK();
}
void
MIDIManagerChild::SetActorAlive()
{
// IPC Channels for MIDIManagers are created and managed by MIDIAccessManager,
// so once the actor is created, we'll need to add a reference to keep it
// alive until BackgroundChildImpl kills it.
AddRef();
}
void
MIDIManagerChild::Shutdown()
{
MOZ_ASSERT(!mShutdown);
mShutdown = true;
SendShutdown();
}