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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QSSG_GLSLMEMORYPOOL_H
#define QSSG_GLSLMEMORYPOOL_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtQuick3DGlslParser/private/glsl_p.h>
#include <cstddef>
#include <new>
QT_BEGIN_NAMESPACE
namespace GLSL {
class MemoryPool;
class Q_QUICK3DGLSLPARSER_EXPORT MemoryPool
{
MemoryPool(const MemoryPool &other);
void operator =(const MemoryPool &other);
public:
MemoryPool();
~MemoryPool();
void reset();
inline void *allocate(size_t size)
{
size = (size + 7) & ~7;
if (_ptr && (_ptr + size < _end)) {
void *addr = _ptr;
_ptr += size;
return addr;
}
return allocate_helper(size);
}
private:
void *allocate_helper(size_t size);
private:
char **_blocks;
int _allocatedBlocks;
int _blockCount;
char *_ptr;
char *_end;
enum
{
BLOCK_SIZE = 8 * 1024,
DEFAULT_BLOCK_COUNT = 8
};
};
class Q_QUICK3DGLSLPARSER_EXPORT Managed
{
Managed(const Managed &other);
void operator = (const Managed &other);
public:
Managed();
virtual ~Managed();
void *operator new(size_t size, MemoryPool *pool);
void operator delete(void *);
void operator delete(void *, MemoryPool *);
};
} // namespace GLSL
QT_END_NAMESPACE
#endif // QSSG_GLSLMEMORYPOOL_H
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