зеркало из https://github.com/mozilla/gecko-dev.git
103 строки
3.1 KiB
C++
103 строки
3.1 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_ReadStream_h
|
|
#define mozilla_dom_cache_ReadStream_h
|
|
|
|
#include "mozilla/ipc/FileDescriptor.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsID.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsISupportsImpl.h"
|
|
#include "nsTArrayForwardDeclare.h"
|
|
|
|
class nsIThread;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
namespace cache {
|
|
|
|
class PCacheReadStream;
|
|
class PCacheReadStreamOrVoid;
|
|
class PCacheStreamControlParent;
|
|
|
|
// IID for the dom::cache::ReadStream interface
|
|
#define NS_DOM_CACHE_READSTREAM_IID \
|
|
{0x8e5da7c9, 0x0940, 0x4f1d, \
|
|
{0x97, 0x25, 0x5c, 0x59, 0x38, 0xdd, 0xb9, 0x9f}}
|
|
|
|
// Custom stream class for Request and Response bodies being read from
|
|
// a Cache. The main purpose of this class is to report back to the
|
|
// Cache's Manager when the stream is closed. This allows the Cache to
|
|
// accurately determine when the underlying body file can be deleted,
|
|
// etc.
|
|
//
|
|
// The ReadStream class also provides us with a convenient QI'able
|
|
// interface that we can use to pass additional meta-data with the
|
|
// stream channel. For example, Cache.put() can detect that the content
|
|
// script is passing a Cache-originated-stream back into the Cache
|
|
// again. This enables certain optimizations.
|
|
class ReadStream : public nsIInputStream
|
|
{
|
|
public:
|
|
static already_AddRefed<ReadStream>
|
|
Create(const PCacheReadStreamOrVoid& aReadStreamOrVoid);
|
|
|
|
static already_AddRefed<ReadStream>
|
|
Create(const PCacheReadStream& aReadStream);
|
|
|
|
static already_AddRefed<ReadStream>
|
|
Create(PCacheStreamControlParent* aControl, const nsID& aId,
|
|
nsIInputStream* aStream);
|
|
|
|
void Serialize(PCacheReadStreamOrVoid* aReadStreamOut);
|
|
void Serialize(PCacheReadStream* aReadStreamOut);
|
|
|
|
// methods called from the child and parent CacheStreamControl actors
|
|
void CloseStream();
|
|
void CloseStreamWithoutReporting();
|
|
bool MatchId(const nsID& aId) const;
|
|
|
|
protected:
|
|
class NoteClosedRunnable;
|
|
class ForgetRunnable;
|
|
|
|
ReadStream(const nsID& aId, nsIInputStream* aStream);
|
|
virtual ~ReadStream();
|
|
|
|
void NoteClosed();
|
|
void Forget();
|
|
|
|
virtual void NoteClosedOnOwningThread() = 0;
|
|
virtual void ForgetOnOwningThread() = 0;
|
|
virtual void SerializeControl(PCacheReadStream* aReadStreamOut) = 0;
|
|
|
|
virtual void
|
|
SerializeFds(PCacheReadStream* aReadStreamOut,
|
|
const nsTArray<mozilla::ipc::FileDescriptor>& fds) = 0;
|
|
|
|
const nsID mId;
|
|
nsCOMPtr<nsIInputStream> mStream;
|
|
nsCOMPtr<nsIInputStream> mSnappyStream;
|
|
nsCOMPtr<nsIThread> mOwningThread;
|
|
bool mClosed;
|
|
|
|
public:
|
|
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_DOM_CACHE_READSTREAM_IID);
|
|
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
NS_DECL_NSIINPUTSTREAM
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(ReadStream, NS_DOM_CACHE_READSTREAM_IID);
|
|
|
|
} // namespace cache
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_cache_ReadStream_h
|