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/****************************************************************************
**
** Copyright (C) 2017 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Enterprise Perf Profiler Add-on.
**
** GNU General Public License Usage
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in
** the file LICENSE.GPLv3 included in the packaging of this file. Please
** review the following information to ensure the GNU General Public License
** requirements will be met: https://www.gnu.org/licenses/gpl.html.
**
** If you have questions regarding the use of this file, please use
** contact form at http://www.qt.io/contact-us
**
****************************************************************************/
#ifndef PERFADDRESSCACHE_H
#define PERFADDRESSCACHE_H
#include <QHash>
#include <QVector>
#include "perfelfmap.h"
class PerfAddressCache
{
public:
struct AddressCacheEntry
{
AddressCacheEntry(int locationId = -1, bool isInterworking = false)
: locationId(locationId)
, isInterworking(isInterworking)
{}
bool isValid() const { return locationId >= 0; }
int locationId;
bool isInterworking;
};
using OffsetAddressCache = QHash<quint64, AddressCacheEntry>;
struct SymbolCacheEntry
{
SymbolCacheEntry(quint64 offset = 0, quint64 size = 0, const QByteArray &symname = {})
: offset(offset)
, size(size)
, symname(symname)
{}
bool isValid() const { return !symname.isEmpty(); }
quint64 offset;
quint64 size;
QByteArray symname;
bool demangled = false;
};
using SymbolCache = QVector<SymbolCacheEntry>;
AddressCacheEntry find(const PerfElfMap::ElfInfo& elf, quint64 addr,
OffsetAddressCache *invalidAddressCache) const;
void cache(const PerfElfMap::ElfInfo& elf, quint64 addr,
const AddressCacheEntry& entry, OffsetAddressCache *invalidAddressCache);
/// check if @c setSymbolCache was called for @p filePath already
bool hasSymbolCache(const QByteArray &filePath) const;
/// take @p cache, sort it and use it for symbol lookups in @p filePath
void setSymbolCache(const QByteArray &filePath, SymbolCache cache);
/// find the symbol that encompasses @p relAddr in @p filePath
/// if the found symbol wasn't yet demangled, it will be demangled now
SymbolCacheEntry findSymbol(const QByteArray &filePath, quint64 relAddr);
private:
QHash<QByteArray, OffsetAddressCache> m_cache;
QHash<QByteArray, SymbolCache> m_symbolCache;
};
QT_BEGIN_NAMESPACE
Q_DECLARE_TYPEINFO(PerfAddressCache::SymbolCacheEntry, Q_MOVABLE_TYPE);
QT_END_NAMESPACE
#endif
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