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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 <QtCore/QDebug>
+#include <QtCore/QScopedPointer>
+#include <QtCore/QVector>
+
+#include <Qt3DCore/private/qt3dcore_global_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DCore {
+
+class QFrameAllocatorPrivate;
+
+class Q_3DCORE_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