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Diffstat (limited to 'src/core/resources/qframeallocator_p.h')
-rw-r--r-- | src/core/resources/qframeallocator_p.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/core/resources/qframeallocator_p.h b/src/core/resources/qframeallocator_p.h new file mode 100644 index 000000000..4c2b5a961 --- /dev/null +++ b/src/core/resources/qframeallocator_p.h @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** 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 |