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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DS_FOUNDATION_PERFTIMER_H
#define QT3DS_FOUNDATION_PERFTIMER_H
#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSTime.h"
#include "foundation/Qt3DSRefCounted.h"
#include "foundation/StringTable.h"
namespace qt3ds {
namespace foundation {
class IPerfTimer : public NVRefCounted
{
protected:
virtual ~IPerfTimer() {}
public:
// amount is in counter frequency units
virtual void Update(const char *inTag, QT3DSU64 inAmount) = 0;
// Dump current summation of timer data.
virtual void OutputTimerData(QT3DSU32 inFrameCount = 0) = 0;
virtual void ResetTimerData() = 0;
static IPerfTimer &CreatePerfTimer(NVFoundationBase &inFoundation);
};
// Specialize this struct to get the perf timer in different contexts.
template <typename TTimerProvider>
struct STimerProvider
{
static IPerfTimer &getPerfTimer(TTimerProvider &inProvider)
{
return inProvider.getPerfTimer();
}
};
template <typename TTimerProvider>
IPerfTimer &getPerfTimer(TTimerProvider &inProvider)
{
return STimerProvider<TTimerProvider>::getPerfTimer(inProvider);
}
struct SStackPerfTimer
{
IPerfTimer *m_Timer;
QT3DSU64 m_Start;
const char *m_Id;
SStackPerfTimer(IPerfTimer &destination, const char *inId)
: m_Timer(&destination)
, m_Start(Time::getCurrentCounterValue())
, m_Id(inId)
{
}
SStackPerfTimer(IPerfTimer *destination, const char *inId)
: m_Timer(destination)
, m_Start(Time::getCurrentCounterValue())
, m_Id(inId)
{
}
~SStackPerfTimer()
{
if (m_Timer) {
QT3DSU64 theStop = Time::getCurrentCounterValue();
QT3DSU64 theAmount = theStop - m_Start;
m_Timer->Update(m_Id, theAmount);
}
}
};
}
}
#define QT3DS_FOUNDATION_PERF_SCOPED_TIMER(context, name) \
SStackPerfTimer __perfTimer(getPerfTimer(context), #name);
#endif
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