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comparison: netwerk/cache/nsDiskCacheStreams.h
netwerk/cache/nsDiskCacheStreams.h
- changeset 0
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 | |
| 8 #ifndef _nsDiskCacheStreams_h_ | |
| 9 #define _nsDiskCacheStreams_h_ | |
| 10 | |
| 11 #include "mozilla/MemoryReporting.h" | |
| 12 #include "nsDiskCacheBinding.h" | |
| 13 | |
| 14 #include "nsCache.h" | |
| 15 | |
| 16 #include "nsIInputStream.h" | |
| 17 #include "nsIOutputStream.h" | |
| 18 | |
| 19 #include "mozilla/Atomics.h" | |
| 20 | |
| 21 class nsDiskCacheInputStream; | |
| 22 class nsDiskCacheDevice; | |
| 23 | |
| 24 class nsDiskCacheStreamIO : public nsIOutputStream { | |
| 25 public: | |
| 26 nsDiskCacheStreamIO(nsDiskCacheBinding * binding); | |
| 27 virtual ~nsDiskCacheStreamIO(); | |
| 28 | |
| 29 NS_DECL_THREADSAFE_ISUPPORTS | |
| 30 NS_DECL_NSIOUTPUTSTREAM | |
| 31 | |
| 32 nsresult GetInputStream(uint32_t offset, nsIInputStream ** inputStream); | |
| 33 nsresult GetOutputStream(uint32_t offset, nsIOutputStream ** outputStream); | |
| 34 | |
| 35 nsresult ClearBinding(); | |
| 36 | |
| 37 void IncrementInputStreamCount() { mInStreamCount++; } | |
| 38 void DecrementInputStreamCount() | |
| 39 { | |
| 40 mInStreamCount--; | |
| 41 NS_ASSERTION(mInStreamCount >= 0, "mInStreamCount has gone negative"); | |
| 42 } | |
| 43 | |
| 44 size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf); | |
| 45 | |
| 46 // GCC 2.95.2 requires this to be defined, although we never call it. | |
| 47 // and OS/2 requires that it not be private | |
| 48 nsDiskCacheStreamIO() { NS_NOTREACHED("oops"); } | |
| 49 | |
| 50 private: | |
| 51 nsresult OpenCacheFile(int flags, PRFileDesc ** fd); | |
| 52 nsresult ReadCacheBlocks(uint32_t bufferSize); | |
| 53 nsresult FlushBufferToFile(); | |
| 54 void UpdateFileSize(); | |
| 55 void DeleteBuffer(); | |
| 56 nsresult CloseOutputStream(); | |
| 57 nsresult SeekAndTruncate(uint32_t offset); | |
| 58 | |
| 59 nsDiskCacheBinding * mBinding; // not an owning reference | |
| 60 nsDiskCacheDevice * mDevice; | |
| 61 mozilla::Atomic<int32_t> mInStreamCount; | |
| 62 PRFileDesc * mFD; | |
| 63 | |
| 64 uint32_t mStreamEnd; // current size of data | |
| 65 uint32_t mBufSize; // current end of buffer | |
| 66 char * mBuffer; | |
| 67 bool mOutputStreamIsOpen; | |
| 68 }; | |
| 69 | |
| 70 #endif // _nsDiskCacheStreams_h_ |
