зеркало из https://github.com/mozilla/gecko-dev.git
97 строки
2.7 KiB
C++
97 строки
2.7 KiB
C++
/* -*- 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_dom_cache_StreamControl_h
|
|
#define mozilla_dom_cache_StreamControl_h
|
|
|
|
#include "mozilla/dom/cache/ReadStream.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "nsTObserverArray.h"
|
|
|
|
struct nsID;
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
class FileDescriptor;
|
|
} // namespace ipc
|
|
namespace dom {
|
|
namespace cache {
|
|
|
|
class CacheReadStream;
|
|
|
|
// Abstract class to help implement the stream control Child and Parent actors.
|
|
// This provides an interface to partly help with serialization of IPC types,
|
|
// but also an implementation for tracking ReadStream objects.
|
|
class StreamControl
|
|
{
|
|
public:
|
|
// abstract interface that must be implemented by child class
|
|
virtual void
|
|
SerializeControl(CacheReadStream* aReadStreamOut) = 0;
|
|
|
|
virtual void
|
|
SerializeFds(CacheReadStream* aReadStreamOut,
|
|
const nsTArray<mozilla::ipc::FileDescriptor>& aFds) = 0;
|
|
|
|
virtual void
|
|
DeserializeFds(const CacheReadStream& aReadStream,
|
|
nsTArray<mozilla::ipc::FileDescriptor>& aFdsOut) = 0;
|
|
|
|
// inherited implementation of the ReadStream::Controllable list
|
|
|
|
// Begin controlling the given ReadStream. This causes a strong ref to
|
|
// be held by the control. The ReadStream must call NoteClosed() or
|
|
// ForgetReadStream() to release this ref.
|
|
void
|
|
AddReadStream(ReadStream::Controllable* aReadStream);
|
|
|
|
// Forget the ReadStream without notifying the actor.
|
|
void
|
|
ForgetReadStream(ReadStream::Controllable* aReadStream);
|
|
|
|
// Forget the ReadStream and then notify the actor the stream is closed.
|
|
void
|
|
NoteClosed(ReadStream::Controllable* aReadStream, const nsID& aId);
|
|
|
|
protected:
|
|
~StreamControl();
|
|
|
|
void
|
|
CloseReadStreams(const nsID& aId);
|
|
|
|
void
|
|
CloseAllReadStreams();
|
|
|
|
void
|
|
CloseAllReadStreamsWithoutReporting();
|
|
|
|
bool
|
|
HasEverBeenRead() const;
|
|
|
|
// protected parts of the abstract interface
|
|
virtual void
|
|
NoteClosedAfterForget(const nsID& aId) = 0;
|
|
|
|
#ifdef DEBUG
|
|
virtual void
|
|
AssertOwningThread() = 0;
|
|
#else
|
|
void AssertOwningThread() { }
|
|
#endif
|
|
|
|
private:
|
|
// Hold strong references to ReadStream object. When the stream is closed
|
|
// it should call NoteClosed() or ForgetReadStream() to release this ref.
|
|
typedef nsTObserverArray<RefPtr<ReadStream::Controllable>> ReadStreamList;
|
|
ReadStreamList mReadStreamList;
|
|
};
|
|
|
|
} // namespace cache
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_cache_StreamControl_h
|