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author | Oswald Buddenhagen <oswald.buddenhagen@nokia.com> | 2011-05-16 10:53:42 +0200 |
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committer | Oswald Buddenhagen <oswald.buddenhagen@nokia.com> | 2011-05-16 11:05:30 +0200 |
commit | 67704b8b41b053eddbd4119a04115fb0fb2c9237 (patch) | |
tree | 094fb9bc849f2467d6389267d5613574a48f478f /src/libs/3rdparty/cplusplus/MemoryPool.h | |
parent | 5a39fba5805d34fbef16a50d20312b8a9de5bdfc (diff) | |
download | qt-creator-67704b8b41b053eddbd4119a04115fb0fb2c9237.tar.gz |
move src/shared/cplusplus/ -> src/libs/3rdparty/cplusplus/
Approved-by: legal
Diffstat (limited to 'src/libs/3rdparty/cplusplus/MemoryPool.h')
-rw-r--r-- | src/libs/3rdparty/cplusplus/MemoryPool.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/libs/3rdparty/cplusplus/MemoryPool.h b/src/libs/3rdparty/cplusplus/MemoryPool.h new file mode 100644 index 0000000000..aa8cb6da3f --- /dev/null +++ b/src/libs/3rdparty/cplusplus/MemoryPool.h @@ -0,0 +1,133 @@ +/************************************************************************** +** +** This file is part of Qt Creator +** +** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Nokia Corporation (info@qt.nokia.com) +** +** +** GNU Lesser General Public License Usage +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** Other Usage +** +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** If you have questions regarding the use of this file, please contact +** Nokia at info@qt.nokia.com. +** +**************************************************************************/ +// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com> +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +#ifndef CPLUSPLUS_MEMORYPOOL_H +#define CPLUSPLUS_MEMORYPOOL_H + +#include "CPlusPlusForwardDeclarations.h" +#include <new> + +namespace CPlusPlus { + +class MemoryPool; +class RecursiveMemoryPool; + +class CPLUSPLUS_EXPORT MemoryPool +{ + MemoryPool(const MemoryPool &other); + void operator =(const MemoryPool &other); + +public: + MemoryPool(); + ~MemoryPool(); + + void reset(); + + inline void *allocate(size_t size) + { + size = (size + 7) & ~7; + if (_ptr && (_ptr + size < _end)) { + void *addr = _ptr; + _ptr += size; + return addr; + } + return allocate_helper(size); + } + +private: + void *allocate_helper(size_t size); + +private: + char **_blocks; + int _allocatedBlocks; + int _blockCount; + char *_ptr; + char *_end; + + enum + { + BLOCK_SIZE = 8 * 1024, + DEFAULT_BLOCK_COUNT = 8 + }; + + friend class RecursiveMemoryPool; +}; + +class CPLUSPLUS_EXPORT RecursiveMemoryPool +{ + MemoryPool *_pool; + int _blockCount; + char *_ptr; + char *_end; + +public: + RecursiveMemoryPool(MemoryPool *pool); + ~RecursiveMemoryPool(); +}; + +class CPLUSPLUS_EXPORT Managed +{ + Managed(const Managed &other); + void operator = (const Managed &other); + +public: + Managed(); + virtual ~Managed(); + + void *operator new(size_t size, MemoryPool *pool); + void operator delete(void *); + void operator delete(void *, MemoryPool *); +}; + +} // namespace CPlusPlus + + +#endif // CPLUSPLUS_MEMORYPOOL_H |