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-rw-r--r--toolkit/components/url-classifier/VariableLengthPrefixSet.h70
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diff --git a/toolkit/components/url-classifier/VariableLengthPrefixSet.h b/toolkit/components/url-classifier/VariableLengthPrefixSet.h
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+//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 VariableLengthPrefixSet_h
+#define VariableLengthPrefixSet_h
+
+#include "nsISupports.h"
+#include "nsIMemoryReporter.h"
+#include "Entries.h"
+#include "nsTArray.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/Mutex.h"
+
+class nsUrlClassifierPrefixSet;
+
+namespace mozilla {
+namespace safebrowsing {
+
+class VariableLengthPrefixSet final
+ : public nsIMemoryReporter
+{
+public:
+ VariableLengthPrefixSet();
+
+ NS_IMETHOD Init(const nsACString& aName);
+ NS_IMETHOD SetPrefixes(const mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
+ NS_IMETHOD GetPrefixes(mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
+ NS_IMETHOD Matches(const nsACString& aFullHash, uint32_t* aLength);
+ NS_IMETHOD IsEmpty(bool* aEmpty);
+ NS_IMETHOD LoadFromFile(nsIFile* aFile);
+ NS_IMETHOD StoreToFile(nsIFile* aFile);
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
+
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIMEMORYREPORTER
+
+private:
+ virtual ~VariableLengthPrefixSet();
+
+ static const uint32_t MAX_BUFFER_SIZE = 64 * 1024;
+ static const uint32_t PREFIXSET_VERSION_MAGIC = 1;
+
+ bool BinarySearch(const nsACString& aFullHash,
+ const nsACString& aPrefixes,
+ uint32_t aPrefixSize);
+
+ uint32_t CalculatePreallocateSize();
+ nsresult WritePrefixes(nsIOutputStream* out);
+ nsresult LoadPrefixes(nsIInputStream* in);
+
+ // Lock to prevent races between the url-classifier thread (which does most
+ // of the operations) and the main thread (which does memory reporting).
+ // It should be held for all operations between Init() and destruction that
+ // touch this class's data members.
+ mozilla::Mutex mLock;
+
+ RefPtr<nsUrlClassifierPrefixSet> mFixedPrefixSet;
+ mozilla::safebrowsing::PrefixStringMap mVLPrefixSet;
+
+ nsCString mMemoryReportPath;
+};
+
+} // namespace safebrowsing
+} // namespace mozilla
+
+#endif