netwerk/cache2/CacheFileOutputStream.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef CacheFileOutputStream__h__
   6 #define CacheFileOutputStream__h__
   7
   8 #include "nsIAsyncOutputStream.h"
   9 #include "nsISeekableStream.h"
  10 #include "nsCOMPtr.h"
  11 #include "nsAutoPtr.h"
  12 #include "CacheFileChunk.h"
  13
  14
  15 namespace mozilla {
  16 namespace net {
  17
  18 class CacheFile;
  19 class CacheOutputCloseListener;
  20
  21 class CacheFileOutputStream : public nsIAsyncOutputStream
  22                             , public nsISeekableStream
  23                             , public CacheFileChunkListener
  24 {
  25   NS_DECL_THREADSAFE_ISUPPORTS
  26   NS_DECL_NSIOUTPUTSTREAM
  27   NS_DECL_NSIASYNCOUTPUTSTREAM
  28   NS_DECL_NSISEEKABLESTREAM
  29
  30 public:
  31   CacheFileOutputStream(CacheFile *aFile, CacheOutputCloseListener *aCloseListener);
  32
  33   NS_IMETHOD OnChunkRead(nsresult aResult, CacheFileChunk *aChunk);
  34   NS_IMETHOD OnChunkWritten(nsresult aResult, CacheFileChunk *aChunk);
  35   NS_IMETHOD OnChunkAvailable(nsresult aResult, uint32_t aChunkIdx,
  36                               CacheFileChunk *aChunk);
  37   NS_IMETHOD OnChunkUpdated(CacheFileChunk *aChunk);
  38
  39   void NotifyCloseListener();
  40
  41   // Memory reporting
  42   size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
  43
  44 private:
  45   virtual ~CacheFileOutputStream();
  46
  47   nsresult CloseWithStatusLocked(nsresult aStatus);
  48   void ReleaseChunk();
  49   void EnsureCorrectChunk(bool aReleaseOnly);
  50   void FillHole();
  51   void NotifyListener();
  52
  53   nsRefPtr<CacheFile>      mFile;
  54   nsRefPtr<CacheFileChunk> mChunk;
  55   nsRefPtr<CacheOutputCloseListener> mCloseListener;
  56   int64_t                  mPos;
  57   bool                     mClosed;
  58   nsresult                 mStatus;
  59
  60   nsCOMPtr<nsIOutputStreamCallback> mCallback;
  61   uint32_t                          mCallbackFlags;
  62   nsCOMPtr<nsIEventTarget>          mCallbackTarget;
  63 };
  64
  65
  66 } // net
  67 } // mozilla
  68
  69 #endif