forked from mirrors/gecko-dev
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef VariableLengthPrefixSet_h
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#define VariableLengthPrefixSet_h
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#include "nsISupports.h"
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#include "nsIMemoryReporter.h"
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#include "Entries.h"
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#include "nsTArray.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/Mutex.h"
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class nsUrlClassifierPrefixSet;
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namespace mozilla {
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namespace safebrowsing {
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class VariableLengthPrefixSet final : public nsIMemoryReporter {
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public:
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VariableLengthPrefixSet();
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nsresult Init(const nsACString& aName);
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nsresult SetPrefixes(mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
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nsresult SetPrefixes(AddPrefixArray& aAddPrefixes,
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AddCompleteArray& aAddCompletes);
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nsresult GetPrefixes(mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
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nsresult GetFixedLengthPrefixes(FallibleTArray<uint32_t>* aPrefixes,
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FallibleTArray<nsCString>* aCompletes);
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nsresult Matches(uint32_t aPrefix, const nsACString& aFullHash,
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uint32_t* aLength) const;
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nsresult IsEmpty(bool* aEmpty) const;
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nsresult WritePrefixes(nsCOMPtr<nsIOutputStream>& out) const;
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nsresult LoadPrefixes(nsCOMPtr<nsIInputStream>& in);
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uint32_t CalculatePreallocateSize() const;
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIMEMORYREPORTER
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private:
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virtual ~VariableLengthPrefixSet();
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static const uint32_t PREFIXSET_VERSION_MAGIC = 1;
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bool BinarySearch(const nsACString& aFullHash, const nsACString& aPrefixes,
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uint32_t aPrefixSize) const;
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// Lock to prevent races between the url-classifier thread (which does most
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// of the operations) and the main thread (which does memory reporting).
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// It should be held for all operations between Init() and destruction that
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// touch this class's data members.
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mutable mozilla::Mutex mLock MOZ_UNANNOTATED;
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const RefPtr<nsUrlClassifierPrefixSet> mFixedPrefixSet;
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mozilla::safebrowsing::PrefixStringMap mVLPrefixSet;
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nsCString mName;
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nsCString mMemoryReportPath;
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};
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} // namespace safebrowsing
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} // namespace mozilla
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#endif
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