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-rw-r--r--netwerk/cache/nsDiskCacheStreams.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/netwerk/cache/nsDiskCacheStreams.h b/netwerk/cache/nsDiskCacheStreams.h
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+++ b/netwerk/cache/nsDiskCacheStreams.h
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * 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 _nsDiskCacheStreams_h_
+#define _nsDiskCacheStreams_h_
+
+#include "mozilla/MemoryReporting.h"
+#include "nsDiskCacheBinding.h"
+
+#include "nsCache.h"
+
+#include "nsIInputStream.h"
+#include "nsIOutputStream.h"
+
+#include "mozilla/Atomics.h"
+
+class nsDiskCacheDevice;
+
+class nsDiskCacheStreamIO : public nsIOutputStream {
+public:
+ explicit nsDiskCacheStreamIO(nsDiskCacheBinding * binding);
+
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIOUTPUTSTREAM
+
+ nsresult GetInputStream(uint32_t offset, nsIInputStream ** inputStream);
+ nsresult GetOutputStream(uint32_t offset, nsIOutputStream ** outputStream);
+
+ nsresult ClearBinding();
+
+ void IncrementInputStreamCount() { mInStreamCount++; }
+ void DecrementInputStreamCount()
+ {
+ mInStreamCount--;
+ NS_ASSERTION(mInStreamCount >= 0, "mInStreamCount has gone negative");
+ }
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf);
+
+ // GCC 2.95.2 requires this to be defined, although we never call it.
+ // and OS/2 requires that it not be private
+ nsDiskCacheStreamIO() { NS_NOTREACHED("oops"); }
+
+private:
+ virtual ~nsDiskCacheStreamIO();
+
+ nsresult OpenCacheFile(int flags, PRFileDesc ** fd);
+ nsresult ReadCacheBlocks(uint32_t bufferSize);
+ nsresult FlushBufferToFile();
+ void UpdateFileSize();
+ void DeleteBuffer();
+ nsresult CloseOutputStream();
+ nsresult SeekAndTruncate(uint32_t offset);
+
+ nsDiskCacheBinding * mBinding; // not an owning reference
+ nsDiskCacheDevice * mDevice;
+ mozilla::Atomic<int32_t> mInStreamCount;
+ PRFileDesc * mFD;
+
+ uint32_t mStreamEnd; // current size of data
+ uint32_t mBufSize; // current end of buffer
+ char * mBuffer;
+ bool mOutputStreamIsOpen;
+};
+
+#endif // _nsDiskCacheStreams_h_