зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.2 KiB
C++
75 строки
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef CacheFileInputStream__h__
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#define CacheFileInputStream__h__
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#include "nsIAsyncInputStream.h"
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#include "nsISeekableStream.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "CacheFileChunk.h"
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namespace mozilla {
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namespace net {
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class CacheFile;
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class CacheFileInputStream : public nsIAsyncInputStream
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, public nsISeekableStream
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, public CacheFileChunkListener
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{
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIINPUTSTREAM
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NS_DECL_NSIASYNCINPUTSTREAM
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NS_DECL_NSISEEKABLESTREAM
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public:
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explicit CacheFileInputStream(CacheFile *aFile, nsISupports *aEntry);
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NS_IMETHOD OnChunkRead(nsresult aResult, CacheFileChunk *aChunk) override;
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NS_IMETHOD OnChunkWritten(nsresult aResult, CacheFileChunk *aChunk) override;
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NS_IMETHOD OnChunkAvailable(nsresult aResult, uint32_t aChunkIdx,
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CacheFileChunk *aChunk) override;
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NS_IMETHOD OnChunkUpdated(CacheFileChunk *aChunk) override;
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// Memory reporting
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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uint32_t GetPosition() const { return mPos; };
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private:
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virtual ~CacheFileInputStream();
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nsresult CloseWithStatusLocked(nsresult aStatus);
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void ReleaseChunk();
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void EnsureCorrectChunk(bool aReleaseOnly);
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// CanRead returns negative value when output stream truncates the data before
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// the input stream's mPos.
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void CanRead(int64_t *aCanRead, const char **aBuf);
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void NotifyListener();
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void MaybeNotifyListener();
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RefPtr<CacheFile> mFile;
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RefPtr<CacheFileChunk> mChunk;
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int64_t mPos;
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bool mClosed;
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nsresult mStatus;
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bool mWaitingForUpdate;
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int64_t mListeningForChunk;
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nsCOMPtr<nsIInputStreamCallback> mCallback;
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uint32_t mCallbackFlags;
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nsCOMPtr<nsIEventTarget> mCallbackTarget;
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// Held purely for referencing purposes
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RefPtr<nsISupports> mCacheEntryHandle;
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};
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} // namespace net
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} // namespace mozilla
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#endif
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