forked from qt-creator/qt-creator
129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include "MemoryPool.h"
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#include <cstdlib>
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#include <cstring>
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#include <cassert>
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CPLUSPLUS_BEGIN_NAMESPACE
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using namespace std;
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MemoryPool::MemoryPool()
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: _initializeAllocatedMemory(true),
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_blocks(0),
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_allocatedBlocks(0),
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_blockCount(-1),
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ptr(0),
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end(0)
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{ }
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MemoryPool::~MemoryPool()
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{
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if (_blockCount != -1) {
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for (int i = 0; i < _blockCount + 1; ++i) {
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free(_blocks[i]);
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}
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}
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if (_blocks)
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free(_blocks);
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}
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bool MemoryPool::initializeAllocatedMemory() const
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{ return _initializeAllocatedMemory; }
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void MemoryPool::setInitializeAllocatedMemory(bool initializeAllocatedMemory)
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{ _initializeAllocatedMemory = initializeAllocatedMemory; }
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void *MemoryPool::allocate_helper(size_t size)
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{
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assert(size < BLOCK_SIZE);
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if (++_blockCount == _allocatedBlocks) {
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if (! _allocatedBlocks)
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_allocatedBlocks = 8;
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else
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_allocatedBlocks *= 2;
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_blocks = (char **) realloc(_blocks, sizeof(char *) * _allocatedBlocks);
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}
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char *&block = _blocks[_blockCount];
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if (_initializeAllocatedMemory)
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block = (char *) calloc(1, BLOCK_SIZE);
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else
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block = (char *) malloc(BLOCK_SIZE);
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ptr = block;
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end = ptr + BLOCK_SIZE;
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void *addr = ptr;
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ptr += size;
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return addr;
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}
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Managed::Managed()
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{ }
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Managed::~Managed()
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{ }
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void *Managed::operator new(size_t size, MemoryPool *pool)
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{ return pool->allocate(size); }
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void Managed::operator delete(void *)
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{ }
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void Managed::operator delete(void *, MemoryPool *)
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{ }
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CPLUSPLUS_END_NAMESPACE
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