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Diffstat (limited to 'src/script/qscriptmemorypool_p.h')
| -rw-r--r-- | src/script/qscriptmemorypool_p.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/src/script/qscriptmemorypool_p.h b/src/script/qscriptmemorypool_p.h deleted file mode 100644 index 2f069ec..0000000 --- a/src/script/qscriptmemorypool_p.h +++ /dev/null @@ -1,130 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Qt Software Information (qt-info@nokia.com) -** -** This file is part of the QtScript module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the either Technology Preview License Agreement or the -** Beta Release License Agreement. -** -** 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, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, 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. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at qt-sales@nokia.com. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QSCRIPTMEMORYPOOL_P_H -#define QSCRIPTMEMORYPOOL_P_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 <QtCore/qglobal.h> -#include <QtCore/qshareddata.h> -#include <string.h> - -QT_BEGIN_NAMESPACE - -namespace QScript { - -class MemoryPool : public QSharedData -{ -public: - enum { maxBlockCount = -1 }; - enum { defaultBlockSize = 1 << 12 }; - - MemoryPool() { - m_blockIndex = maxBlockCount; - m_currentIndex = 0; - m_storage = 0; - m_currentBlock = 0; - m_currentBlockSize = 0; - } - - virtual ~MemoryPool() { - for (int index = 0; index < m_blockIndex + 1; ++index) - qFree(m_storage[index]); - - qFree(m_storage); - } - - char *allocate(int bytes) { - bytes += (8 - bytes) & 7; // ensure multiple of 8 bytes (maintain alignment) - if (m_currentBlock == 0 || m_currentBlockSize < m_currentIndex + bytes) { - ++m_blockIndex; - m_currentBlockSize = defaultBlockSize << m_blockIndex; - - m_storage = reinterpret_cast<char**>(qRealloc(m_storage, sizeof(char*) * (1 + m_blockIndex))); - m_currentBlock = m_storage[m_blockIndex] = reinterpret_cast<char*>(qMalloc(m_currentBlockSize)); - ::memset(m_currentBlock, 0, m_currentBlockSize); - - m_currentIndex = (8 - quintptr(m_currentBlock)) & 7; // ensure first chunk is 64-bit aligned - Q_ASSERT(m_currentIndex + bytes <= m_currentBlockSize); - } - - char *p = reinterpret_cast<char *> - (m_currentBlock + m_currentIndex); - - m_currentIndex += bytes; - - return p; - } - - int bytesAllocated() const { - int bytes = 0; - for (int index = 0; index < m_blockIndex; ++index) - bytes += (defaultBlockSize << index); - bytes += m_currentIndex; - return bytes; - } - -private: - int m_blockIndex; - int m_currentIndex; - char *m_currentBlock; - int m_currentBlockSize; - char **m_storage; - -private: - Q_DISABLE_COPY(MemoryPool) -}; - -} // namespace QScript - -QT_END_NAMESPACE - -#endif |