// -*- C++ -*-
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// -*- C++ -*-
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// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
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//
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// Foundation; either version 3, or (at your option) any later
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// version.
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// version.
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// This library is distributed in the hope that it will be useful, but
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// purpose. It is provided "as is" without express or implied
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// warranty.
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// warranty.
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/**
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/**
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* @file rc.hpp
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* @file rc.hpp
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* Contains a redundant (binary counter).
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* Contains a redundant (binary counter).
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*/
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*/
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#ifndef PB_DS_RC_HPP
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#ifndef PB_DS_RC_HPP
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#define PB_DS_RC_HPP
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#define PB_DS_RC_HPP
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namespace __gnu_pbds
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namespace __gnu_pbds
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{
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{
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namespace detail
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namespace detail
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{
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{
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#define PB_DS_CLASS_T_DEC \
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#define PB_DS_CLASS_T_DEC \
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template<typename Node, class Allocator>
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template<typename Node, class Allocator>
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#define PB_DS_CLASS_C_DEC \
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#define PB_DS_CLASS_C_DEC \
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rc<Node, Allocator>
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rc<Node, Allocator>
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template<typename Node, class Allocator>
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template<typename Node, class Allocator>
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class rc
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class rc
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{
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{
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private:
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private:
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typedef Allocator allocator_type;
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typedef Allocator allocator_type;
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typedef typename allocator_type::size_type size_type;
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typedef typename allocator_type::size_type size_type;
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typedef Node node;
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typedef Node node;
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typedef
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typedef
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typename allocator_type::template rebind<
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typename allocator_type::template rebind<
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node>::other::pointer
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node>::other::pointer
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node_pointer;
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node_pointer;
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typedef
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typedef
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typename allocator_type::template rebind<
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typename allocator_type::template rebind<
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node_pointer>::other::pointer
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node_pointer>::other::pointer
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entry_pointer;
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entry_pointer;
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typedef
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typedef
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typename allocator_type::template rebind<
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typename allocator_type::template rebind<
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node_pointer>::other::const_pointer
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node_pointer>::other::const_pointer
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const_entry_pointer;
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const_entry_pointer;
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enum
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enum
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{
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{
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max_entries = sizeof(size_type) << 3
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max_entries = sizeof(size_type) << 3
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};
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};
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public:
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public:
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typedef node_pointer entry;
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typedef node_pointer entry;
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typedef const_entry_pointer const_iterator;
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typedef const_entry_pointer const_iterator;
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public:
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public:
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rc();
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rc();
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rc(const PB_DS_CLASS_C_DEC& other);
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rc(const PB_DS_CLASS_C_DEC& other);
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inline void
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inline void
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swap(PB_DS_CLASS_C_DEC& other);
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swap(PB_DS_CLASS_C_DEC& other);
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inline void
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inline void
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push(entry p_nd);
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push(entry p_nd);
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inline node_pointer
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inline node_pointer
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top() const;
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top() const;
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inline void
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inline void
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pop();
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pop();
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inline bool
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inline bool
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empty() const;
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empty() const;
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inline size_type
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inline size_type
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size() const;
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size() const;
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void
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void
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clear();
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clear();
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const const_iterator
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const const_iterator
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begin() const;
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begin() const;
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const const_iterator
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const const_iterator
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end() const;
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end() const;
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#ifdef _GLIBCXX_DEBUG
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#ifdef _GLIBCXX_DEBUG
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void
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void
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assert_valid() const;
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assert_valid() const;
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#endif
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#endif
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#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
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#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
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void
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void
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trace() const;
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trace() const;
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#endif
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#endif
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private:
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private:
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node_pointer m_a_entries[max_entries];
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node_pointer m_a_entries[max_entries];
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size_type m_over_top;
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size_type m_over_top;
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};
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};
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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rc() : m_over_top(0)
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rc() : m_over_top(0)
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{ _GLIBCXX_DEBUG_ONLY(assert_valid();) }
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{ _GLIBCXX_DEBUG_ONLY(assert_valid();) }
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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rc(const PB_DS_CLASS_C_DEC& other) : m_over_top(0)
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rc(const PB_DS_CLASS_C_DEC& other) : m_over_top(0)
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{ _GLIBCXX_DEBUG_ONLY(assert_valid();) }
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{ _GLIBCXX_DEBUG_ONLY(assert_valid();) }
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline void
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inline void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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swap(PB_DS_CLASS_C_DEC& other)
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swap(PB_DS_CLASS_C_DEC& other)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
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_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
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const size_type over_top = std::max(m_over_top, other.m_over_top);
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const size_type over_top = std::max(m_over_top, other.m_over_top);
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for (size_type i = 0; i < over_top; ++i)
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for (size_type i = 0; i < over_top; ++i)
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std::swap(m_a_entries[i], other.m_a_entries[i]);
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std::swap(m_a_entries[i], other.m_a_entries[i]);
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std::swap(m_over_top, other.m_over_top);
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std::swap(m_over_top, other.m_over_top);
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
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_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline void
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inline void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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push(entry p_nd)
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push(entry p_nd)
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries);
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_GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries);
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m_a_entries[m_over_top++] = p_nd;
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m_a_entries[m_over_top++] = p_nd;
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline void
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inline void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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pop()
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pop()
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ASSERT(!empty());
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_GLIBCXX_DEBUG_ASSERT(!empty());
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--m_over_top;
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--m_over_top;
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::node_pointer
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inline typename PB_DS_CLASS_C_DEC::node_pointer
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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top() const
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top() const
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ASSERT(!empty());
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_GLIBCXX_DEBUG_ASSERT(!empty());
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return *(m_a_entries + m_over_top - 1);
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return *(m_a_entries + m_over_top - 1);
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline bool
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inline bool
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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empty() const
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empty() const
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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return m_over_top == 0;
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return m_over_top == 0;
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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inline typename PB_DS_CLASS_C_DEC::size_type
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inline typename PB_DS_CLASS_C_DEC::size_type
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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size() const
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size() const
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{ return m_over_top; }
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{ return m_over_top; }
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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clear()
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clear()
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{
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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m_over_top = 0;
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m_over_top = 0;
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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}
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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const typename PB_DS_CLASS_C_DEC::const_iterator
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const typename PB_DS_CLASS_C_DEC::const_iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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begin() const
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begin() const
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{ return& m_a_entries[0]; }
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{ return& m_a_entries[0]; }
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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const typename PB_DS_CLASS_C_DEC::const_iterator
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const typename PB_DS_CLASS_C_DEC::const_iterator
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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end() const
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end() const
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{ return& m_a_entries[m_over_top]; }
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{ return& m_a_entries[m_over_top]; }
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#ifdef _GLIBCXX_DEBUG
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#ifdef _GLIBCXX_DEBUG
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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assert_valid() const
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assert_valid() const
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{ _GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries); }
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{ _GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries); }
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#endif
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#endif
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#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
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#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_T_DEC
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void
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void
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PB_DS_CLASS_C_DEC::
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PB_DS_CLASS_C_DEC::
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trace() const
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trace() const
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{
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{
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std::cout << "rc" << std::endl;
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std::cout << "rc" << std::endl;
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for (size_type i = 0; i < m_over_top; ++i)
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for (size_type i = 0; i < m_over_top; ++i)
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std::cerr << m_a_entries[i] << std::endl;
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std::cerr << m_a_entries[i] << std::endl;
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std::cout << std::endl;
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std::cout << std::endl;
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}
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}
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#endif
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#endif
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#undef PB_DS_CLASS_T_DEC
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#undef PB_DS_CLASS_T_DEC
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#undef PB_DS_CLASS_C_DEC
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#undef PB_DS_CLASS_C_DEC
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} // namespace detail
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} // namespace detail
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} // namespace __gnu_pbds
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} // namespace __gnu_pbds
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#endif
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#endif
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