Mercurial > projects > qtd
view generator/parser/rxx_allocator.h @ 336:b0a7819153bb
fixed signal branch merge problems
author | maxter@maxter |
---|---|
date | Thu, 11 Feb 2010 12:59:25 +0200 |
parents | 09a0f1d048f2 |
children |
line wrap: on
line source
/**************************************************************************** ** ** Copyright (C) 1992-2009 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 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. ** ** 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;