diff -r 000000000000 -r 6474c204b198 toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,69 @@
+//* -*- 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 nsUrlClassifierPrefixSet_h_
+#define nsUrlClassifierPrefixSet_h_
+
+#include "nsISupportsUtils.h"
+#include "nsID.h"
+#include "nsIFile.h"
+#include "nsIMemoryReporter.h"
+#include "nsIMutableArray.h"
+#include "nsIUrlClassifierPrefixSet.h"
+#include "nsTArray.h"
+#include "nsToolkitCompsCID.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/CondVar.h"
+#include "mozilla/FileUtils.h"
+
+class nsUrlClassifierPrefixSet
+  : public nsIUrlClassifierPrefixSet
+  , public nsIMemoryReporter
+{
+public:
+  nsUrlClassifierPrefixSet();
+  virtual ~nsUrlClassifierPrefixSet();
+
+  NS_IMETHOD Init(const nsACString& aName);
+  NS_IMETHOD SetPrefixes(const uint32_t* aArray, uint32_t aLength);
+  NS_IMETHOD GetPrefixes(uint32_t* aCount, uint32_t** aPrefixes);
+  NS_IMETHOD Contains(uint32_t aPrefix, bool* aFound);
+  NS_IMETHOD IsEmpty(bool* aEmpty);
+  NS_IMETHOD LoadFromFile(nsIFile* aFile);
+  NS_IMETHOD StoreToFile(nsIFile* aFile);
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIMEMORYREPORTER
+
+  // Return the estimated size of the set on disk and in memory, in bytes.
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
+
+protected:
+  static const uint32_t DELTAS_LIMIT = 100;
+  static const uint32_t MAX_INDEX_DIFF = (1 << 16);
+  static const uint32_t PREFIXSET_VERSION_MAGIC = 1;
+
+  nsresult MakePrefixSet(const uint32_t* aArray, uint32_t aLength);
+  uint32_t BinSearch(uint32_t start, uint32_t end, uint32_t target);
+  nsresult LoadFromFd(mozilla::AutoFDClose& fileFd);
+  nsresult StoreToFd(mozilla::AutoFDClose& fileFd);
+
+  // boolean indicating whether |setPrefixes| has been
+  // called with a non-empty array.
+  bool mHasPrefixes;
+  // the prefix for each index.
+  FallibleTArray<uint32_t> mIndexPrefixes;
+  // the value corresponds to the beginning of the run
+  // (an index in |_deltas|) for the index
+  FallibleTArray<uint32_t> mIndexStarts;
+  // array containing deltas from indices.
+  FallibleTArray<uint16_t> mDeltas;
+
+  nsCString mMemoryReportPath;
+};
+
+#endif