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/***************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
**
** Non-Open Source Usage
**
** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
** agreement between you and Nokia.
**
** GNU General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 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 GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt GPL Exception
** version 1.2, included in the file GPL_EXCEPTION.txt in this package.
**
***************************************************************************/
// 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.
#include "MemoryPool.h"
#include <cstdlib>
#include <cstring>
#include <cassert>
CPLUSPLUS_BEGIN_NAMESPACE
MemoryPool::MemoryPool()
: _initializeAllocatedMemory(true),
_blocks(0),
_allocatedBlocks(0),
_blockCount(-1),
ptr(0),
end(0)
{ }
MemoryPool::~MemoryPool()
{
if (_blockCount != -1) {
for (int i = 0; i < _blockCount + 1; ++i) {
free(_blocks[i]);
}
}
if (_blocks)
free(_blocks);
}
bool MemoryPool::initializeAllocatedMemory() const
{ return _initializeAllocatedMemory; }
void MemoryPool::setInitializeAllocatedMemory(bool initializeAllocatedMemory)
{ _initializeAllocatedMemory = initializeAllocatedMemory; }
void *MemoryPool::allocate_helper(size_t size)
{
assert(size < BLOCK_SIZE);
if (++_blockCount == _allocatedBlocks) {
if (! _allocatedBlocks)
_allocatedBlocks = 8;
else
_allocatedBlocks *= 2;
_blocks = (char **) realloc(_blocks, sizeof(char *) * _allocatedBlocks);
}
char *&block = _blocks[_blockCount];
if (_initializeAllocatedMemory)
block = (char *) calloc(1, BLOCK_SIZE);
else
block = (char *) malloc(BLOCK_SIZE);
ptr = block;
end = ptr + BLOCK_SIZE;
void *addr = ptr;
ptr += size;
return addr;
}
CPLUSPLUS_END_NAMESPACE
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