45 lines
1.4 KiB
C++
45 lines
1.4 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_IPC_TOPLEVELACTORHOLDER_H
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#define MOZILLA_IPC_TOPLEVELACTORHOLDER_H
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#include "nsISupports.h"
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namespace mozilla::ipc {
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// Class to let us close the actor when we're not using it anymore. You
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// should create a single instance of this, and when you have no more
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// references it will be destroyed and will Close() the underlying
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// top-level channel.
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// When you want to send something, you use something like
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// aActor->Actor()->SendFoo()
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// You can avoid calling Close() on an un-connected Actor (for example if
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// Bind() fails) by calling RemoveActor();
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template <typename T>
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class ToplevelActorHolder final {
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public:
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NS_INLINE_DECL_REFCOUNTING_ONEVENTTARGET(ToplevelActorHolder)
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explicit ToplevelActorHolder(T* aActor) : mActor(aActor) {}
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constexpr T* Actor() const { return mActor; }
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inline void RemoveActor() { mActor = nullptr; }
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private:
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inline ~ToplevelActorHolder() {
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if (mActor) {
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mActor->Close();
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}
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}
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RefPtr<T> mActor;
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};
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} // namespace mozilla::ipc
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#endif // MOZILLA_IPC_TOPLEVELACTORHOLDER_H
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