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-rw-r--r--netwerk/cache2/CacheFileInputStream.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/netwerk/cache2/CacheFileInputStream.h b/netwerk/cache2/CacheFileInputStream.h
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+++ b/netwerk/cache2/CacheFileInputStream.h
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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 "nsAutoPtr.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
+
+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; };
+
+private:
+ virtual ~CacheFileInputStream();
+
+ nsresult 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