netwerk/cache2/CacheFileOutputStream.h
author Chris Manchester <cmanchester@mozilla.com>
Wed, 16 Jan 2019 22:46:38 +0000
changeset 514323 471d9fab61b34671f974dfa349e7972c200faa2b
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
child 533940 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1507631 - Remove mentions of MOZ_SIGN_CMD from the build system. r=nalexander Differential Revision: https://phabricator.services.mozilla.com/D16754

/* 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 CacheFileOutputStream__h__
#define CacheFileOutputStream__h__

#include "nsIAsyncOutputStream.h"
#include "nsISeekableStream.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "CacheFileChunk.h"

namespace mozilla {
namespace net {

class CacheFile;
class CacheOutputCloseListener;

class CacheFileOutputStream : public nsIAsyncOutputStream,
                              public nsISeekableStream,
                              public CacheFileChunkListener {
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_NSIOUTPUTSTREAM
  NS_DECL_NSIASYNCOUTPUTSTREAM
  NS_DECL_NSISEEKABLESTREAM
  NS_DECL_NSITELLABLESTREAM

 public:
  CacheFileOutputStream(CacheFile *aFile,
                        CacheOutputCloseListener *aCloseListener,
                        bool aAlternativeData);

  NS_IMETHOD OnChunkRead(nsresult aResult, CacheFileChunk *aChunk) override;
  NS_IMETHOD OnChunkWritten(nsresult aResult, CacheFileChunk *aChunk) override;
  NS_IMETHOD OnChunkAvailable(nsresult aResult, uint32_t aChunkIdx,
                              CacheFileChunk *aChunk) override;
  NS_IMETHOD OnChunkUpdated(CacheFileChunk *aChunk) override;

  void NotifyCloseListener();
  bool IsAlternativeData() const { return mAlternativeData; };

  // Memory reporting
  size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;

 private:
  virtual ~CacheFileOutputStream();

  nsresult CloseWithStatusLocked(nsresult aStatus);
  void ReleaseChunk();
  void EnsureCorrectChunk(bool aReleaseOnly);
  void FillHole();
  void NotifyListener();

  RefPtr<CacheFile> mFile;
  RefPtr<CacheFileChunk> mChunk;
  RefPtr<CacheOutputCloseListener> mCloseListener;
  int64_t mPos;
  bool mClosed : 1;
  bool const mAlternativeData : 1;
  nsresult mStatus;

  nsCOMPtr<nsIOutputStreamCallback> mCallback;
  uint32_t mCallbackFlags;
  nsCOMPtr<nsIEventTarget> mCallbackTarget;
};

}  // namespace net
}  // namespace mozilla

#endif