mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 22:55:23 +00:00
144 lines
4.1 KiB
C++
144 lines
4.1 KiB
C++
/* 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 CacheFileChunk__h__
|
|
#define CacheFileChunk__h__
|
|
|
|
#include "CacheFileIOManager.h"
|
|
#include "CacheStorageService.h"
|
|
#include "CacheHashUtils.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "mozilla/Mutex.h"
|
|
|
|
namespace mozilla {
|
|
namespace net {
|
|
|
|
#define kChunkSize 16384
|
|
#define kEmptyChunkHash 0xA8CA
|
|
|
|
class CacheFileChunk;
|
|
class CacheFile;
|
|
class ValidityPair;
|
|
|
|
|
|
#define CACHEFILECHUNKLISTENER_IID \
|
|
{ /* baf16149-2ab5-499c-a9c2-5904eb95c288 */ \
|
|
0xbaf16149, \
|
|
0x2ab5, \
|
|
0x499c, \
|
|
{0xa9, 0xc2, 0x59, 0x04, 0xeb, 0x95, 0xc2, 0x88} \
|
|
}
|
|
|
|
class CacheFileChunkListener : public nsISupports
|
|
{
|
|
public:
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(CACHEFILECHUNKLISTENER_IID)
|
|
|
|
NS_IMETHOD OnChunkRead(nsresult aResult, CacheFileChunk *aChunk) = 0;
|
|
NS_IMETHOD OnChunkWritten(nsresult aResult, CacheFileChunk *aChunk) = 0;
|
|
NS_IMETHOD OnChunkAvailable(nsresult aResult, uint32_t aChunkIdx,
|
|
CacheFileChunk *aChunk) = 0;
|
|
NS_IMETHOD OnChunkUpdated(CacheFileChunk *aChunk) = 0;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(CacheFileChunkListener,
|
|
CACHEFILECHUNKLISTENER_IID)
|
|
|
|
|
|
class ChunkListenerItem {
|
|
public:
|
|
ChunkListenerItem() { MOZ_COUNT_CTOR(ChunkListenerItem); }
|
|
~ChunkListenerItem() { MOZ_COUNT_DTOR(ChunkListenerItem); }
|
|
|
|
nsCOMPtr<nsIEventTarget> mTarget;
|
|
nsCOMPtr<CacheFileChunkListener> mCallback;
|
|
};
|
|
|
|
class ChunkListeners {
|
|
public:
|
|
ChunkListeners() { MOZ_COUNT_CTOR(ChunkListeners); }
|
|
~ChunkListeners() { MOZ_COUNT_DTOR(ChunkListeners); }
|
|
|
|
nsTArray<ChunkListenerItem *> mItems;
|
|
};
|
|
|
|
class CacheFileChunk : public CacheFileIOListener
|
|
, public CacheMemoryConsumer
|
|
{
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
|
|
CacheFileChunk(CacheFile *aFile, uint32_t aIndex);
|
|
|
|
void InitNew(CacheFileChunkListener *aCallback);
|
|
nsresult Read(CacheFileHandle *aHandle, uint32_t aLen,
|
|
CacheHashUtils::Hash16_t aHash,
|
|
CacheFileChunkListener *aCallback);
|
|
nsresult Write(CacheFileHandle *aHandle, CacheFileChunkListener *aCallback);
|
|
void WaitForUpdate(CacheFileChunkListener *aCallback);
|
|
nsresult CancelWait(CacheFileChunkListener *aCallback);
|
|
nsresult NotifyUpdateListeners();
|
|
|
|
uint32_t Index();
|
|
CacheHashUtils::Hash16_t Hash();
|
|
uint32_t DataSize();
|
|
void UpdateDataSize(uint32_t aOffset, uint32_t aLen,
|
|
bool aEOF);
|
|
|
|
NS_IMETHOD OnFileOpened(CacheFileHandle *aHandle, nsresult aResult);
|
|
NS_IMETHOD OnDataWritten(CacheFileHandle *aHandle, const char *aBuf,
|
|
nsresult aResult);
|
|
NS_IMETHOD OnDataRead(CacheFileHandle *aHandle, char *aBuf, nsresult aResult);
|
|
NS_IMETHOD OnFileDoomed(CacheFileHandle *aHandle, nsresult aResult);
|
|
NS_IMETHOD OnEOFSet(CacheFileHandle *aHandle, nsresult aResult);
|
|
|
|
bool IsReady();
|
|
bool IsDirty();
|
|
|
|
char * BufForWriting();
|
|
const char * BufForReading();
|
|
void EnsureBufSize(uint32_t aBufSize);
|
|
uint32_t MemorySize() { return mRWBufSize + mBufSize; }
|
|
|
|
private:
|
|
friend class CacheFileInputStream;
|
|
friend class CacheFileOutputStream;
|
|
friend class CacheFile;
|
|
|
|
virtual ~CacheFileChunk();
|
|
|
|
enum EState {
|
|
INITIAL = 0,
|
|
READING = 1,
|
|
WRITING = 2,
|
|
READY = 3,
|
|
ERROR = 4
|
|
};
|
|
|
|
uint32_t mIndex;
|
|
EState mState;
|
|
bool mIsDirty;
|
|
bool mRemovingChunk;
|
|
uint32_t mDataSize;
|
|
|
|
char *mBuf;
|
|
uint32_t mBufSize;
|
|
|
|
char *mRWBuf;
|
|
uint32_t mRWBufSize;
|
|
CacheHashUtils::Hash16_t mReadHash;
|
|
|
|
nsRefPtr<CacheFile> mFile; // is null if chunk is cached to
|
|
// prevent reference cycles
|
|
nsCOMPtr<CacheFileChunkListener> mListener;
|
|
nsTArray<ChunkListenerItem *> mUpdateListeners;
|
|
nsTArray<ValidityPair> mValidityMap;
|
|
};
|
|
|
|
|
|
} // net
|
|
} // mozilla
|
|
|
|
#endif
|