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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or 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.GPL2 and 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DCORE_QFRAMEALLOCATOR_P_H
#define QT3DCORE_QFRAMEALLOCATOR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifdef QFRAMEALLOCATOR_DEBUG
#include <valgrind/valgrind.h>
#include <valgrind/memcheck.h>
#endif
#include <QDebug>
#include <QScopedPointer>
#include <QVector>
#include <Qt3DCore/private/qt3dcore_global_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DCore {
class QFrameAllocatorPrivate;
class QT3DCORE_PRIVATE_EXPORT QFrameAllocator
{
public:
explicit QFrameAllocator(uint maxObjectSize, uint alignment = 16, uint pageSize = 128);
~QFrameAllocator();
template<typename T>
T* allocate()
{
void* ptr = allocateRawMemory(sizeof(T));
new (ptr) T(); // Don't forget to call the constructor of the object using the placement new operator
return static_cast<T*>(ptr);
}
template<typename T>
void deallocate(T *ptr)
{
ptr->~T(); // Call destructor
deallocateRawMemory(ptr, sizeof(T));
}
void* allocateRawMemory(size_t size);
void deallocateRawMemory(void *ptr, size_t size);
void clear();
void trim();
uint maxObjectSize() const;
uint totalChunkCount() const;
int allocatorPoolSize() const;
bool isEmpty() const;
private:
Q_DECLARE_PRIVATE(QFrameAllocator)
const QScopedPointer<QFrameAllocatorPrivate> d_ptr;
};
} // Qt3D
QT_END_NAMESPACE
#endif // QFRAMEALLOCATOR_P_H
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