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/* 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 CacheFileInputStream__h__
#define CacheFileInputStream__h__
#include "nsIAsyncInputStream.h"
#include "nsISeekableStream.h"
#include "nsCOMPtr.h"
#include "CacheFileChunk.h"
namespace mozilla {
namespace net {
class CacheFile;
class CacheFileInputStream : public nsIAsyncInputStream,
public nsISeekableStream,
public CacheFileChunkListener {
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIINPUTSTREAM
NS_DECL_NSIASYNCINPUTSTREAM
NS_DECL_NSISEEKABLESTREAM
NS_DECL_NSITELLABLESTREAM
public:
explicit CacheFileInputStream(CacheFile* aFile, nsISupports* aEntry,
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;
// Memory reporting
size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
uint32_t GetPosition() const { return mPos; };
bool IsAlternativeData() const { return mAlternativeData; };
int64_t GetChunkIdx() const {
return mChunk ? static_cast<int64_t>(mChunk->Index()) : -1;
};
private:
virtual ~CacheFileInputStream();
void CloseWithStatusLocked(nsresult aStatus);
void CleanUp();
void ReleaseChunk();
void EnsureCorrectChunk(bool aReleaseOnly);
// CanRead returns negative value when output stream truncates the data before
// the input stream's mPos.
int64_t CanRead(CacheFileChunkReadHandle* aHandle);
void NotifyListener();
void MaybeNotifyListener();
RefPtr<CacheFile> mFile;
RefPtr<CacheFileChunk> mChunk;
int64_t mPos;
nsresult mStatus;
bool mClosed : 1;
bool mInReadSegments : 1;
bool mWaitingForUpdate : 1;
bool const mAlternativeData : 1;
int64_t mListeningForChunk;
nsCOMPtr<nsIInputStreamCallback> mCallback;
uint32_t mCallbackFlags;
nsCOMPtr<nsIEventTarget> mCallbackTarget;
// Held purely for referencing purposes
RefPtr<nsISupports> mCacheEntryHandle;
};
} // namespace net
} // namespace mozilla
#endif
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