dom/midi/MIDIManagerParent.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/MIDIManagerParent.h"
   8 #include "mozilla/dom/MIDIPlatformService.h"
   9
  10 namespace mozilla::dom {
  11
  12 void MIDIManagerParent::ActorDestroy(ActorDestroyReason aWhy) {
  13   if (MIDIPlatformService::IsRunning()) {
  14     MIDIPlatformService::Get()->RemoveManager(this);
  15   }
  16 }
  17
  18 mozilla::ipc::IPCResult MIDIManagerParent::RecvRefresh() {
  19   MIDIPlatformService::Get()->Refresh();
  20   return IPC_OK();
  21 }
  22
  23 mozilla::ipc::IPCResult MIDIManagerParent::RecvShutdown() {
  24   // The two-step shutdown process here is the standard way to ensure that the
  25   // child receives any messages sent by the server (since either sending or
  26   // receiving __delete__ prevents any further messages from being received).
  27   // This was necessary before bug 1547085 when discarded messages would
  28   // trigger a crash, and is probably unnecessary now, but we leave it in place
  29   // just in case.
  30   Close();
  31   return IPC_OK();
  32 }
  33
  34 }  // namespace mozilla::dom