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/****************************************************************************
**
** Copyright (C) 1993-2009 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#include "Qt3DSMacros.h"
//==============================================================================
// Namespace
//==============================================================================
namespace Q3DStudio {
//==============================================================================
// Memory Tracking Enums
//==============================================================================
/// Track a value - remembering peak and add/del count
enum EMemoryValue {
MEMVALUE_ADDS = 0, ///< For example: allocation call count or bytes allocated
MEMVALUE_DELETES, ///< For example: free call count or bytes deallocated
MEMVALUE_PEAK, ///< Peak of the current value since the last reset
MEMVALUE_CURRENT, ///< Current count
MEMVALUECOUNT
};
/// Differentiate between full session (global) or since last reset (local)
enum EMemoryScope {
MEMSCOPE_RESET = 0, ///< Since last reset
MEMSCOPE_GLOBAL, ///< Since process start
MEMSCOPECOUNT
};
//==============================================================================
/**
* Memory allocation counter tracking bytes or calls.
*
* A probe instance can be placed to track either number of allocations
* or the bytes of each allocation. CMemoryManager and CMemoryHeap both
* record statistics using this class. 64 bytes.
*/
class CMemoryProbe
{
//==============================================================================
// Structs
//==============================================================================
public:
//==============================================================================
/**
* Intelligent number that tracks current, peak, incr. and decr.
*
* This value remembers how the amount added, the amount deleted, the highest
* value, while keeping a current value. These are used by CMemoryProbe when
* tracking memory allocations.
*/
struct SValue
{
// Fields
INT32 m_Value[MEMVALUECOUNT]; ///< Four aspects (add,del,current,peak) we are tracking
// Methods
SValue() { Reset(); }
void Reset()
{
m_Value[MEMVALUE_ADDS] = 0;
m_Value[MEMVALUE_DELETES] = 0;
m_Value[MEMVALUE_PEAK] = 0;
m_Value[MEMVALUE_CURRENT] = 0;
}
void Delete(INT32 inAmount)
{
Q3DStudio_ASSERT(inAmount >= 0);
m_Value[MEMVALUE_DELETES] += inAmount;
m_Value[MEMVALUE_CURRENT] -= inAmount;
}
void Add(INT32 inAmount)
{
Q3DStudio_ASSERT(inAmount >= 0);
m_Value[MEMVALUE_ADDS] += inAmount;
m_Value[MEMVALUE_CURRENT] += inAmount;
m_Value[MEMVALUE_PEAK] =
Q3DStudio_max(m_Value[MEMVALUE_PEAK], m_Value[MEMVALUE_CURRENT]);
}
};
//==============================================================================
// Fields
//==============================================================================
protected:
SValue m_Calls[MEMSCOPECOUNT]; ///< Memory call count
SValue m_Bytes[MEMSCOPECOUNT]; ///< Memory allocation amount
//==============================================================================
// Methods
//==============================================================================
public: // Constructor
CMemoryProbe();
~CMemoryProbe();
public: // Operations
void Reset();
void Allocate(const INT32 inByteAmount);
void Free(const INT32 inByteAmount);
void Combine(const CMemoryProbe &inProbe);
public: // Accessors
INT32 GetCalls(const EMemoryScope inScope, const EMemoryValue inValue) const
{
return m_Calls[inScope].m_Value[inValue];
}
INT32 GetBytes(const EMemoryScope inScope, const EMemoryValue inValue) const
{
return m_Bytes[inScope].m_Value[inValue];
}
};
} // namespace Q3DStudio
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