fune/dom/file/ipc/RemoteLazyInputStreamChild.h
Nika Layzell 95a883d65d Bug 1754004 - Part 3: Move RemoteLazyInputStream to its own toplevel protocol, r=asuth,necko-reviewers,dragana
This is a complete rewrite of RemoteLazyInputStream to run off of its own
toplevel protocol, rather than being managed by other protocols like
PBackground or PContent. This should improve performance thanks to no longer
needing to operate on a main or worker thread, and due to no longer needing the
migration step for the stream actor.

This also acts as a step towards no longer requiring a manager actor to
serialize input streams, as the type is now actor-agnostic, and should support
being sent over IPC between any pair of processes.

Differential Revision: https://phabricator.services.mozilla.com/D141040
2022-05-13 14:16:10 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_RemoteLazyInputStreamChild_h
#define mozilla_RemoteLazyInputStreamChild_h
#include "mozilla/PRemoteLazyInputStreamChild.h"
namespace mozilla {
class RemoteLazyInputStream;
class RemoteLazyInputStreamChild final : public PRemoteLazyInputStreamChild {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RemoteLazyInputStreamChild, final)
explicit RemoteLazyInputStreamChild(const nsID& aID);
const nsID& StreamID() const { return mID; }
// Manage the count of streams registered on this actor. When the count
// reaches 0 the connection to our remote process will be closed.
void StreamCreated();
void StreamConsumed();
void ActorDestroy(ActorDestroyReason aReason) override;
private:
~RemoteLazyInputStreamChild() override;
const nsID mID;
std::atomic<size_t> mStreamCount{0};
};
} // namespace mozilla
#endif // mozilla_RemoteLazyInputStreamChild_h