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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef CPLUSPLUS_MEMORYPOOL_H
#define CPLUSPLUS_MEMORYPOOL_H
#include "CPlusPlusForwardDeclarations.h"
#include <new>
namespace CPlusPlus {
class CPLUSPLUS_EXPORT MemoryPool
{
MemoryPool(const MemoryPool &other);
void operator =(const MemoryPool &other);
public:
MemoryPool();
~MemoryPool();
bool initializeAllocatedMemory() const;
void setInitializeAllocatedMemory(bool initializeAllocatedMemory);
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);
}
struct State
{
char *ptr;
char *end;
int blockCount;
inline bool isValid() const
{ return ptr != 0; }
inline State(char *ptr = 0, int blockCount = 0)
: ptr(ptr), blockCount(blockCount) {}
};
State state() const;
void rewind(const State &state);
private:
void *allocate_helper(size_t size);
private:
bool _initializeAllocatedMemory;
char **_blocks;
int _allocatedBlocks;
int _blockCount;
char *ptr, *end;
enum
{
BLOCK_SIZE = 8 * 1024,
DEFAULT_BLOCK_COUNT = 8
};
};
class CPLUSPLUS_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 *);
};
} // end of namespace CPlusPlus
#endif // CPLUSPLUS_MEMORYPOOL_H
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