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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();
nsresult Init(const nsACString& aName);
nsresult SetPrefixes(mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
nsresult SetPrefixes(AddPrefixArray& aAddPrefixes,
AddCompleteArray& aAddCompletes);
nsresult GetPrefixes(mozilla::safebrowsing::PrefixStringMap& aPrefixMap);
nsresult GetFixedLengthPrefixes(FallibleTArray<uint32_t>* aPrefixes,
FallibleTArray<nsCString>* aCompletes);
nsresult Matches(uint32_t aPrefix, const nsACString& aFullHash,
uint32_t* aLength) const;
nsresult IsEmpty(bool* aEmpty) const;
nsresult WritePrefixes(nsCOMPtr<nsIOutputStream>& out) const;
nsresult LoadPrefixes(nsCOMPtr<nsIInputStream>& in);
uint32_t CalculatePreallocateSize() const;
size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIMEMORYREPORTER
private:
virtual ~VariableLengthPrefixSet();
static const uint32_t PREFIXSET_VERSION_MAGIC = 1;
bool BinarySearch(const nsACString& aFullHash, const nsACString& aPrefixes,
uint32_t aPrefixSize) const;
// 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.
mutable mozilla::Mutex mLock MOZ_UNANNOTATED;
const RefPtr<nsUrlClassifierPrefixSet> mFixedPrefixSet;
mozilla::safebrowsing::PrefixStringMap mVLPrefixSet;
nsCString mName;
nsCString mMemoryReportPath;
};
} // namespace safebrowsing
} // namespace mozilla
#endif