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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 Qt Creator.
**
** 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.
**
****************************************************************************/
#include "glslmemorypool.h"
#include <cstring>
#include <cassert>
using namespace GLSL;
MemoryPool::MemoryPool()
: _blocks(0),
_allocatedBlocks(0),
_blockCount(-1),
_ptr(0),
_end(0)
{ }
MemoryPool::~MemoryPool()
{
if (_blocks) {
for (int i = 0; i < _allocatedBlocks; ++i) {
if (char *b = _blocks[i])
std::free(b);
}
std::free(_blocks);
}
}
void MemoryPool::reset()
{
_blockCount = -1;
_ptr = _end = 0;
}
void *MemoryPool::allocate_helper(size_t size)
{
assert(size < BLOCK_SIZE);
if (++_blockCount == _allocatedBlocks) {
if (! _allocatedBlocks)
_allocatedBlocks = DEFAULT_BLOCK_COUNT;
else
_allocatedBlocks *= 2;
_blocks = (char **) realloc(_blocks, sizeof(char *) * _allocatedBlocks);
for (int index = _blockCount; index < _allocatedBlocks; ++index)
_blocks[index] = 0;
}
char *&block = _blocks[_blockCount];
if (! block)
block = (char *) std::malloc(BLOCK_SIZE);
_ptr = block;
_end = _ptr + BLOCK_SIZE;
void *addr = _ptr;
_ptr += size;
return addr;
}
RecursiveMemoryPool::RecursiveMemoryPool(MemoryPool *pool)
: _pool(pool),
_blockCount(pool->_blockCount),
_ptr(pool->_ptr),
_end(pool->_end)
{
}
RecursiveMemoryPool::~RecursiveMemoryPool()
{
_pool->_blockCount = _blockCount;
_pool->_ptr = _ptr;
_pool->_end = _end;
}
Managed::Managed()
{ }
Managed::~Managed()
{ }
void *Managed::operator new(size_t size, MemoryPool *pool)
{ return pool->allocate(size); }
void Managed::operator delete(void *)
{ }
void Managed::operator delete(void *, MemoryPool *)
{ }
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