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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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70
toolkit/components/url-classifier/VariableLengthPrefixSet.h Normal file
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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