diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_assoc/lu_policy.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_assoc/lu_policy.hpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_assoc/lu_policy.hpp b/libstdc++-v3/include/ext/pb_assoc/lu_policy.hpp new file mode 100644 index 00000000000..2c56bd98d0d --- /dev/null +++ b/libstdc++-v3/include/ext/pb_assoc/lu_policy.hpp @@ -0,0 +1,181 @@ +// -*- C++ -*- + +// Copyright (C) 2005 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice and +// this permission notice appear in supporting documentation. None of +// the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied warranty. + +/** + * @file lu_policy.hpp + * Contains policies for list update containers. + */ + +#ifndef LU_POLICY_HPP +#define LU_POLICY_HPP + +namespace pb_assoc +{ + struct move_to_front_lu_metadata + { }; + +#define PB_ASSOC_CLASS_T_DEC \ + template<typename Metadata_Reference> + +#define PB_ASSOC_CLASS_C_DEC \ + move_to_front_lu_policy<Metadata_Reference> + + template<typename Metadata_Reference = + std::allocator<move_to_front_lu_metadata>::reference> + class move_to_front_lu_policy + { + public: + void + swap(PB_ASSOC_CLASS_C_DEC& r_other); + + protected: + typedef move_to_front_lu_metadata metadata_type; + + typedef Metadata_Reference metadata_reference; + + metadata_type + operator()() const; + + inline bool + operator()(metadata_reference r_data) const; + }; + +#include <ext/pb_assoc/detail/lu_policy/mtf_lu_policy_imp.hpp> + +#undef PB_ASSOC_CLASS_T_DEC + +#undef PB_ASSOC_CLASS_C_DEC + + template<typename Size_Type> + class counter_lu_policy_base; + + template<typename Size_Type = size_t> + class counter_lu_metadata + { + public: + typedef Size_Type size_type; + + private: + counter_lu_metadata(size_type init_count) : m_count(init_count) + { } + + mutable size_type m_count; + + friend class counter_lu_policy_base<Size_Type>; + }; + + template<typename Size_Type> + class counter_lu_policy_base; + +#define PB_ASSOC_CLASS_T_DEC \ + template<typename Size_Type> + +#define PB_ASSOC_CLASS_C_DEC \ + counter_lu_policy_base<Size_Type> + + template<typename Size_Type> + class counter_lu_policy_base + { + protected: + typedef Size_Type size_type; + + counter_lu_metadata<Size_Type> + operator()(size_type max_size) const; + + template<typename Metadata_Reference> + bool + operator()(Metadata_Reference r_data, size_type m_max_count) const; + }; + +#include <ext/pb_assoc/detail/lu_policy/counter_lu_metadata_imp.hpp> + +#undef PB_ASSOC_CLASS_T_DEC + +#undef PB_ASSOC_CLASS_C_DEC + +#define PB_ASSOC_CLASS_T_DEC \ + template<typename Size_Type, typename Metadata_Reference> + +#define PB_ASSOC_CLASS_C_DEC \ + counter_lu_policy<Size_Type, Metadata_Reference> + + template<typename Size_Type = size_t, + typename Metadata_Reference = + typename std::allocator<counter_lu_metadata<Size_Type> >::reference> + class counter_lu_policy : private counter_lu_policy_base<Size_Type> + { + public: + typedef Size_Type size_type; + + counter_lu_policy(size_type max_count = 5); + + void + swap(PB_ASSOC_CLASS_C_DEC& r_other); + + inline + size_type + get_max_count() const; + + protected: + + typedef counter_lu_metadata< Size_Type> metadata_type; + + typedef Metadata_Reference metadata_reference; + + metadata_type + operator()() const; + + bool + operator()(metadata_reference r_data) const; + + private: + typedef counter_lu_policy_base< Size_Type> my_base; + + size_type m_max_count; + }; + +#include <ext/pb_assoc/detail/lu_policy/counter_lu_policy_imp.hpp> + +#undef PB_ASSOC_CLASS_T_DEC + +#undef PB_ASSOC_CLASS_C_DEC + +} // namespace pb_assoc + +#endif // #ifndef LU_POLICY_HPP |