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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPERFORMANCELOG_H
#define QPERFORMANCELOG_H
#include <QtCore/qdatetime.h>
QT_BEGIN_NAMESPACE
namespace QPerformanceLog
{
Q_DECLARATIVE_EXPORT void displayData();
Q_DECLARATIVE_EXPORT void clear();
#ifdef Q_ENABLE_PERFORMANCE_LOG
struct LogData {
LogData(const char *);
QTime timer;
int sumTime;
unsigned int *data;
};
struct LogMetric {
LogMetric(LogData *, int, const char *);
};
// Internal
void displayData(LogData *);
void clear(LogData *);
#endif
}
#ifdef Q_ENABLE_PERFORMANCE_LOG
#define Q_DECLARE_PERFORMANCE_METRIC(name) \
enum { name = ValueChoice<0, ValueTracker<0, __LINE__>::value, __LINE__>::value }; \
template<int L> \
struct ValueTracker<name, L> \
{ \
enum { value = name }; \
}; \
extern QPerformanceLog::LogMetric metric ## name;
#define Q_DECLARE_PERFORMANCE_LOG(name) \
namespace name { \
extern QPerformanceLog::LogData log; \
inline void displayData() { QPerformanceLog::displayData(&log); } \
inline void clear() { QPerformanceLog::clear(&log); } \
} \
template<int N> \
class name ## Timer { \
public: \
name ## Timer() { \
lastSum = name::log.sumTime + name::log.timer.restart(); \
name::log.sumTime = 0; \
} \
~ name ## Timer() { \
name::log.data[2 * N] += name::log.sumTime + name::log.timer.restart(); \
++name::log.data[2 * N + 1]; \
name::log.sumTime = lastSum; \
} \
private: \
int lastSum; \
}; \
namespace name { \
template<int N, int L> \
struct ValueTracker \
{ \
enum { value = -1 }; \
}; \
template<int DefNextValue, int NextValue, int L> \
struct ValueChoice \
{ \
enum { value = ValueChoice<DefNextValue + 1, ValueTracker<DefNextValue + 1, L>::value, L>::value }; \
}; \
template<int DefNextValue, int L> \
struct ValueChoice<DefNextValue, -1, L> \
{ \
enum { value = DefNextValue }; \
}; \
} \
namespace name
#define Q_DEFINE_PERFORMANCE_LOG(name, desc) \
QPerformanceLog::LogData name::log(desc); \
namespace name
#define Q_DEFINE_PERFORMANCE_METRIC(name, desc) \
QPerformanceLog::LogMetric metrix ## name(&log, name, desc);
#else // Q_ENABLE_PERFORMANCE_LOG
#define Q_DECLARE_PERFORMANCE_METRIC(name)
#define Q_DECLARE_PERFORMANCE_LOG(name) namespace name
#define Q_DEFINE_PERFORMANCE_LOG(name, desc) namespace name
#define Q_DEFINE_PERFORMANCE_METRIC(name, desc)
#endif // Q_ENABLE_PERFORMANCE_LOG
QT_END_NAMESPACE
#endif // QPERFORMANCELOG_H
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