Mercurial > projects > qtd
view generator/parser/rxx_allocator.h @ 16:6faf3d3cb95e
CMake: implement install and package targets.
author | SokoL_SD |
---|---|
date | Thu, 14 May 2009 17:09:25 +0000 |
parents | e78566595089 |
children | 09a0f1d048f2 |
line wrap: on
line source
/**************************************************************************** ** ** Copyright (C) 1992-2008 Nokia. All rights reserved. ** Copyright (C) 2002-2005 Roberto Raggi <roberto@kdevelop.org> ** ** This file is part of Qt Jambi. ** ** * Commercial Usage * Licensees holding valid Qt Commercial licenses may use this file in * accordance with the Qt Commercial License Agreement 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. * * Qt for Windows(R) Licensees * As a special exception, Nokia, as the sole copyright holder for Qt * Designer, grants users of the Qt/Eclipse Integration plug-in the * right for the Qt/Eclipse Integration to link to functionality * provided by Qt Designer and its related libraries. * * * If you are unsure which license is appropriate for your use, please * contact the sales department at qt-sales@nokia.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #ifndef RXX_ALLOCATOR_H #define RXX_ALLOCATOR_H #include <cstddef> #include <cstdlib> #include <cstring> #include <memory> template <class _Tp> class rxx_allocator { public: typedef _Tp value_type; typedef _Tp* pointer; typedef const _Tp* const_pointer; typedef _Tp& reference; typedef const _Tp& const_reference; typedef std::size_t size_type; typedef std::ptrdiff_t difference_type; static const size_type max_block_count = size_type(-1); static const size_type _S_block_size = 1 << 16; // 64K rxx_allocator() { _M_block_index = max_block_count; _M_current_index = 0; _M_storage = 0; _M_current_block = 0; } ~rxx_allocator() { for (size_type index = 0; index < _M_block_index + 1; ++index) delete[] _M_storage[index]; ::free(_M_storage); } pointer address(reference __val) { return &__val; } const_pointer address(const_reference __val) const { return &__val; } pointer allocate(size_type __n, const void* = 0) { const size_type bytes = __n * sizeof(_Tp); if (_M_current_block == 0 || _S_block_size < _M_current_index + bytes) { ++_M_block_index; _M_storage = reinterpret_cast<char**> (::realloc(_M_storage, sizeof(char*) * (1 + _M_block_index))); _M_current_block = _M_storage[_M_block_index] = reinterpret_cast<char*> (new char[_S_block_size]); #if defined(RXX_ALLOCATOR_INIT_0) // ### make it a policy ::memset(_M_current_block, 0, _S_block_size); #endif _M_current_index = 0; } pointer p = reinterpret_cast<pointer> (_M_current_block + _M_current_index); _M_current_index += bytes; return p; } void deallocate(pointer __p, size_type __n) {} size_type max_size() const { return size_type(-1) / sizeof(_Tp); } void contruct(pointer __p, const_reference __val) { new (__p) _Tp(__val); } void destruct(pointer __p) { __p->~_Tp(); } private: template <class _Tp1> struct rebind { typedef rxx_allocator<_Tp1> other; }; template <class _Tp1> rxx_allocator(const rxx_allocator<_Tp1> &__o) {} private: size_type _M_block_index; size_type _M_current_index; char *_M_current_block; char **_M_storage; }; #endif // RXX_ALLOCATOR_H // kate: space-indent on; indent-width 2; replace-tabs on;