michael@0: //* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsUrlClassifierPrefixSet_h_
michael@0: #define nsUrlClassifierPrefixSet_h_
michael@0: 
michael@0: #include "nsISupportsUtils.h"
michael@0: #include "nsID.h"
michael@0: #include "nsIFile.h"
michael@0: #include "nsIMemoryReporter.h"
michael@0: #include "nsIMutableArray.h"
michael@0: #include "nsIUrlClassifierPrefixSet.h"
michael@0: #include "nsTArray.h"
michael@0: #include "nsToolkitCompsCID.h"
michael@0: #include "mozilla/MemoryReporting.h"
michael@0: #include "mozilla/Mutex.h"
michael@0: #include "mozilla/CondVar.h"
michael@0: #include "mozilla/FileUtils.h"
michael@0: 
michael@0: class nsUrlClassifierPrefixSet
michael@0:   : public nsIUrlClassifierPrefixSet
michael@0:   , public nsIMemoryReporter
michael@0: {
michael@0: public:
michael@0:   nsUrlClassifierPrefixSet();
michael@0:   virtual ~nsUrlClassifierPrefixSet();
michael@0: 
michael@0:   NS_IMETHOD Init(const nsACString& aName);
michael@0:   NS_IMETHOD SetPrefixes(const uint32_t* aArray, uint32_t aLength);
michael@0:   NS_IMETHOD GetPrefixes(uint32_t* aCount, uint32_t** aPrefixes);
michael@0:   NS_IMETHOD Contains(uint32_t aPrefix, bool* aFound);
michael@0:   NS_IMETHOD IsEmpty(bool* aEmpty);
michael@0:   NS_IMETHOD LoadFromFile(nsIFile* aFile);
michael@0:   NS_IMETHOD StoreToFile(nsIFile* aFile);
michael@0: 
michael@0:   NS_DECL_THREADSAFE_ISUPPORTS
michael@0:   NS_DECL_NSIMEMORYREPORTER
michael@0: 
michael@0:   // Return the estimated size of the set on disk and in memory, in bytes.
michael@0:   size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
michael@0: 
michael@0: protected:
michael@0:   static const uint32_t DELTAS_LIMIT = 100;
michael@0:   static const uint32_t MAX_INDEX_DIFF = (1 << 16);
michael@0:   static const uint32_t PREFIXSET_VERSION_MAGIC = 1;
michael@0: 
michael@0:   nsresult MakePrefixSet(const uint32_t* aArray, uint32_t aLength);
michael@0:   uint32_t BinSearch(uint32_t start, uint32_t end, uint32_t target);
michael@0:   nsresult LoadFromFd(mozilla::AutoFDClose& fileFd);
michael@0:   nsresult StoreToFd(mozilla::AutoFDClose& fileFd);
michael@0: 
michael@0:   // boolean indicating whether |setPrefixes| has been
michael@0:   // called with a non-empty array.
michael@0:   bool mHasPrefixes;
michael@0:   // the prefix for each index.
michael@0:   FallibleTArray<uint32_t> mIndexPrefixes;
michael@0:   // the value corresponds to the beginning of the run
michael@0:   // (an index in |_deltas|) for the index
michael@0:   FallibleTArray<uint32_t> mIndexStarts;
michael@0:   // array containing deltas from indices.
michael@0:   FallibleTArray<uint16_t> mDeltas;
michael@0: 
michael@0:   nsCString mMemoryReportPath;
michael@0: };
michael@0: 
michael@0: #endif