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1082 lines
41 KiB
C++
1082 lines
41 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2007-2014
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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//
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// The option that yields to non-floating point 1/sqrt(2) alpha is taken
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// from the scapegoat tree implementation of the PSPP library.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTRUSIVE_SGTREE_HPP
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#define BOOST_INTRUSIVE_SGTREE_HPP
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#include <boost/intrusive/detail/config_begin.hpp>
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#include <boost/intrusive/intrusive_fwd.hpp>
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#include <boost/intrusive/detail/assert.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/intrusive/bs_set_hook.hpp>
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#include <boost/intrusive/bstree.hpp>
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#include <boost/intrusive/detail/tree_node.hpp>
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#include <boost/intrusive/pointer_traits.hpp>
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#include <boost/intrusive/detail/mpl.hpp>
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#include <boost/intrusive/detail/math.hpp>
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#include <boost/intrusive/detail/get_value_traits.hpp>
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#include <boost/intrusive/sgtree_algorithms.hpp>
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#include <boost/intrusive/detail/key_nodeptr_comp.hpp>
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#include <boost/intrusive/link_mode.hpp>
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#include <boost/move/utility_core.hpp>
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#include <boost/move/adl_move_swap.hpp>
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#include <cstddef>
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#include <boost/intrusive/detail/minimal_less_equal_header.hpp>
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#include <boost/intrusive/detail/minimal_pair_header.hpp> //std::pair
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#include <cmath>
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#include <cstddef>
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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namespace boost {
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namespace intrusive {
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/// @cond
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namespace detail{
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/////////////////////////////////////////////////////////////
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//
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// Halpha for fixed floating_point<false> option
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//
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/////////////////////////////////////////////////////////////
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//! Returns floor(log2(n)/log2(sqrt(2))) -> floor(2*log2(n))
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//! Undefined if N is 0.
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//!
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//! This function does not use float point operations.
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inline std::size_t calculate_h_sqrt2 (std::size_t n)
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{
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std::size_t f_log2 = detail::floor_log2(n);
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return (2*f_log2) + static_cast<std::size_t>(n >= detail::sqrt2_pow_2xplus1(f_log2));
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}
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struct h_alpha_sqrt2_t
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{
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h_alpha_sqrt2_t(void){}
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std::size_t operator()(std::size_t n) const
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{ return calculate_h_sqrt2(n); }
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};
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struct alpha_0_75_by_max_size_t
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{
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alpha_0_75_by_max_size_t(void){}
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std::size_t operator()(std::size_t max_tree_size) const
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{
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const std::size_t max_tree_size_limit = ((~std::size_t(0))/std::size_t(3));
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return max_tree_size > max_tree_size_limit ? max_tree_size/4*3 : max_tree_size*3/4;
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}
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};
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/////////////////////////////////////////////////////////////
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//
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// Halpha for fixed floating_point<true> option
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//
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/////////////////////////////////////////////////////////////
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struct h_alpha_t
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{
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explicit h_alpha_t(float inv_minus_logalpha)
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: inv_minus_logalpha_(inv_minus_logalpha)
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{}
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std::size_t operator()(std::size_t n) const
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{
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////////////////////////////////////////////////////////////
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// This function must return "floor(log2(1/alpha(n)))" ->
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// floor(log2(n)/log(1/alpha)) ->
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// floor(log2(n)/-log2(alpha))
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// floor(log2(n)*(1/-log2(alpha)))
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////////////////////////////////////////////////////////////
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return static_cast<std::size_t>(detail::fast_log2(float(n))*inv_minus_logalpha_);
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}
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private:
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//Since the function will be repeatedly called
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//precalculate constant data to avoid repeated
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//calls to log and division.
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//This will store 1/(-std::log2(alpha_))
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float inv_minus_logalpha_;
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};
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struct alpha_by_max_size_t
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{
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explicit alpha_by_max_size_t(float alpha)
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: alpha_(alpha)
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{}
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float operator()(std::size_t max_tree_size) const
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{ return float(max_tree_size)*alpha_; }
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private:
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float alpha_;
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};
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template<bool Activate, class SizeType>
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struct alpha_holder
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{
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typedef boost::intrusive::detail::h_alpha_t h_alpha_t;
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typedef boost::intrusive::detail::alpha_by_max_size_t multiply_by_alpha_t;
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alpha_holder()
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: max_tree_size_()
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{ set_alpha(0.70711f); } // ~1/sqrt(2)
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float get_alpha() const
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{ return alpha_; }
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void set_alpha(float alpha)
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{
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alpha_ = alpha;
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inv_minus_logalpha_ = 1/(-detail::fast_log2(alpha));
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}
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h_alpha_t get_h_alpha_t() const
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{ return h_alpha_t(inv_minus_logalpha_); }
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multiply_by_alpha_t get_multiply_by_alpha_t() const
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{ return multiply_by_alpha_t(alpha_); }
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SizeType &get_max_tree_size()
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{ return max_tree_size_; }
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protected:
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float alpha_;
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float inv_minus_logalpha_;
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SizeType max_tree_size_;
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};
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template<class SizeType>
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struct alpha_holder<false, SizeType>
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{
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//This specialization uses alpha = 1/sqrt(2)
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//without using floating point operations
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//Downside: alpha CAN't be changed.
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typedef boost::intrusive::detail::h_alpha_sqrt2_t h_alpha_t;
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typedef boost::intrusive::detail::alpha_0_75_by_max_size_t multiply_by_alpha_t;
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alpha_holder()
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: max_tree_size_()
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{}
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float get_alpha() const
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{ return 0.70710677f; }
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void set_alpha(float)
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{ //alpha CAN't be changed.
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BOOST_INTRUSIVE_INVARIANT_ASSERT(0);
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}
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h_alpha_t get_h_alpha_t() const
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{ return h_alpha_t(); }
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multiply_by_alpha_t get_multiply_by_alpha_t() const
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{ return multiply_by_alpha_t(); }
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SizeType &get_max_tree_size()
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{ return max_tree_size_; }
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protected:
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SizeType max_tree_size_;
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};
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} //namespace detail{
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struct sgtree_defaults
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: bstree_defaults
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{
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static const bool floating_point = true;
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};
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/// @endcond
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//! The class template sgtree is an intrusive scapegoat tree container, that
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//! is used to construct intrusive sg_set and sg_multiset containers.
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//! The no-throw guarantee holds only, if the value_compare object
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//! doesn't throw.
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//!
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//! The template parameter \c T is the type to be managed by the container.
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//! The user can specify additional options and if no options are provided
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//! default options are used.
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//!
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//! The container supports the following options:
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//! \c base_hook<>/member_hook<>/value_traits<>,
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//! \c floating_point<>, \c size_type<> and
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//! \c compare<>.
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
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template<class T, class ...Options>
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#else
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template<class ValueTraits, class VoidOrKeyOfValue, class VoidOrKeyComp, class SizeType, bool FloatingPoint, typename HeaderHolder>
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#endif
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class sgtree_impl
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/// @cond
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: public bstree_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyComp, SizeType, true, SgTreeAlgorithms, HeaderHolder>
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, public detail::alpha_holder<FloatingPoint, SizeType>
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/// @endcond
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{
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public:
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typedef ValueTraits value_traits;
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/// @cond
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typedef bstree_impl< ValueTraits, VoidOrKeyOfValue, VoidOrKeyComp, SizeType
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, true, SgTreeAlgorithms, HeaderHolder> tree_type;
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typedef tree_type implementation_defined;
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/// @endcond
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typedef typename implementation_defined::pointer pointer;
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typedef typename implementation_defined::const_pointer const_pointer;
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typedef typename implementation_defined::value_type value_type;
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typedef typename implementation_defined::key_type key_type;
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typedef typename implementation_defined::key_of_value key_of_value;
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typedef typename implementation_defined::reference reference;
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typedef typename implementation_defined::const_reference const_reference;
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typedef typename implementation_defined::difference_type difference_type;
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typedef typename implementation_defined::size_type size_type;
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typedef typename implementation_defined::value_compare value_compare;
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typedef typename implementation_defined::key_compare key_compare;
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typedef typename implementation_defined::iterator iterator;
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typedef typename implementation_defined::const_iterator const_iterator;
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typedef typename implementation_defined::reverse_iterator reverse_iterator;
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typedef typename implementation_defined::const_reverse_iterator const_reverse_iterator;
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typedef typename implementation_defined::node_traits node_traits;
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typedef typename implementation_defined::node node;
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typedef typename implementation_defined::node_ptr node_ptr;
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typedef typename implementation_defined::const_node_ptr const_node_ptr;
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typedef BOOST_INTRUSIVE_IMPDEF(sgtree_algorithms<node_traits>) node_algorithms;
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static const bool constant_time_size = implementation_defined::constant_time_size;
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static const bool floating_point = FloatingPoint;
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static const bool stateful_value_traits = implementation_defined::stateful_value_traits;
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/// @cond
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private:
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//noncopyable
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typedef detail::alpha_holder<FloatingPoint, SizeType> alpha_traits;
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typedef typename alpha_traits::h_alpha_t h_alpha_t;
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typedef typename alpha_traits::multiply_by_alpha_t multiply_by_alpha_t;
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BOOST_MOVABLE_BUT_NOT_COPYABLE(sgtree_impl)
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BOOST_STATIC_ASSERT(((int)value_traits::link_mode != (int)auto_unlink));
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enum { safemode_or_autounlink =
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(int)value_traits::link_mode == (int)auto_unlink ||
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(int)value_traits::link_mode == (int)safe_link };
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/// @endcond
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public:
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typedef BOOST_INTRUSIVE_IMPDEF(typename node_algorithms::insert_commit_data) insert_commit_data;
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//! @copydoc ::boost::intrusive::bstree::bstree()
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sgtree_impl()
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: tree_type()
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{}
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//! @copydoc ::boost::intrusive::bstree::bstree(const key_compare &,const value_traits &)
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explicit sgtree_impl( const key_compare &cmp, const value_traits &v_traits = value_traits())
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: tree_type(cmp, v_traits)
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{}
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//! @copydoc ::boost::intrusive::bstree::bstree(bool,Iterator,Iterator,const key_compare &,const value_traits &)
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template<class Iterator>
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sgtree_impl( bool unique, Iterator b, Iterator e
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, const key_compare &cmp = key_compare()
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, const value_traits &v_traits = value_traits())
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: tree_type(cmp, v_traits)
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{
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if(unique)
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this->insert_unique(b, e);
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else
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this->insert_equal(b, e);
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}
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//! @copydoc ::boost::intrusive::bstree::bstree(bstree &&)
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sgtree_impl(BOOST_RV_REF(sgtree_impl) x)
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: tree_type(BOOST_MOVE_BASE(tree_type, x)), alpha_traits(x.get_alpha_traits())
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{ ::boost::adl_move_swap(this->get_alpha_traits(), x.get_alpha_traits()); }
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//! @copydoc ::boost::intrusive::bstree::operator=(bstree &&)
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sgtree_impl& operator=(BOOST_RV_REF(sgtree_impl) x)
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{
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this->get_alpha_traits() = x.get_alpha_traits();
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return static_cast<sgtree_impl&>(tree_type::operator=(BOOST_MOVE_BASE(tree_type, x)));
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}
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/// @cond
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private:
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const alpha_traits &get_alpha_traits() const
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{ return *this; }
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alpha_traits &get_alpha_traits()
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{ return *this; }
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h_alpha_t get_h_alpha_func() const
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{ return this->get_alpha_traits().get_h_alpha_t(); }
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multiply_by_alpha_t get_alpha_by_max_size_func() const
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{ return this->get_alpha_traits().get_multiply_by_alpha_t(); }
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/// @endcond
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public:
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#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
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//! @copydoc ::boost::intrusive::bstree::~bstree()
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~sgtree_impl();
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//! @copydoc ::boost::intrusive::bstree::begin()
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iterator begin();
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//! @copydoc ::boost::intrusive::bstree::begin()const
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const_iterator begin() const;
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//! @copydoc ::boost::intrusive::bstree::cbegin()const
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const_iterator cbegin() const;
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//! @copydoc ::boost::intrusive::bstree::end()
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iterator end();
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//! @copydoc ::boost::intrusive::bstree::end()const
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const_iterator end() const;
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//! @copydoc ::boost::intrusive::bstree::cend()const
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const_iterator cend() const;
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//! @copydoc ::boost::intrusive::bstree::rbegin()
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reverse_iterator rbegin();
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//! @copydoc ::boost::intrusive::bstree::rbegin()const
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const_reverse_iterator rbegin() const;
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//! @copydoc ::boost::intrusive::bstree::crbegin()const
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const_reverse_iterator crbegin() const;
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//! @copydoc ::boost::intrusive::bstree::rend()
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reverse_iterator rend();
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//! @copydoc ::boost::intrusive::bstree::rend()const
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const_reverse_iterator rend() const;
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//! @copydoc ::boost::intrusive::bstree::crend()const
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const_reverse_iterator crend() const;
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//! @copydoc ::boost::intrusive::bstree::root()
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iterator root();
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//! @copydoc ::boost::intrusive::bstree::root()const
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const_iterator root() const;
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//! @copydoc ::boost::intrusive::bstree::croot()const
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const_iterator croot() const;
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//! @copydoc ::boost::intrusive::bstree::container_from_end_iterator(iterator)
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static sgtree_impl &container_from_end_iterator(iterator end_iterator);
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//! @copydoc ::boost::intrusive::bstree::container_from_end_iterator(const_iterator)
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static const sgtree_impl &container_from_end_iterator(const_iterator end_iterator);
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//! @copydoc ::boost::intrusive::bstree::container_from_iterator(iterator)
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static sgtree_impl &container_from_iterator(iterator it);
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//! @copydoc ::boost::intrusive::bstree::container_from_iterator(const_iterator)
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static const sgtree_impl &container_from_iterator(const_iterator it);
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//! @copydoc ::boost::intrusive::bstree::key_comp()const
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key_compare key_comp() const;
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//! @copydoc ::boost::intrusive::bstree::value_comp()const
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value_compare value_comp() const;
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//! @copydoc ::boost::intrusive::bstree::empty()const
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bool empty() const;
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//! @copydoc ::boost::intrusive::bstree::size()const
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size_type size() const;
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#endif //#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
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//! @copydoc ::boost::intrusive::bstree::swap
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void swap(sgtree_impl& other)
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{
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//This can throw
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this->tree_type::swap(static_cast<tree_type&>(other));
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::boost::adl_move_swap(this->get_alpha_traits(), other.get_alpha_traits());
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}
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//! @copydoc ::boost::intrusive::bstree::clone_from(const bstree&,Cloner,Disposer)
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//! Additional notes: it also copies the alpha factor from the source container.
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template <class Cloner, class Disposer>
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void clone_from(const sgtree_impl &src, Cloner cloner, Disposer disposer)
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{
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tree_type::clone_from(src, cloner, disposer);
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this->get_alpha_traits() = src.get_alpha_traits();
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}
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//! @copydoc ::boost::intrusive::bstree::clone_from(bstree&&,Cloner,Disposer)
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//! Additional notes: it also copies the alpha factor from the source container.
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template <class Cloner, class Disposer>
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void clone_from(BOOST_RV_REF(sgtree_impl) src, Cloner cloner, Disposer disposer)
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{
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tree_type::clone_from(BOOST_MOVE_BASE(tree_type, src), cloner, disposer);
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this->get_alpha_traits() = ::boost::move(src.get_alpha_traits());
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}
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//! @copydoc ::boost::intrusive::bstree::insert_equal(reference)
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iterator insert_equal(reference value)
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{
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node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
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if(safemode_or_autounlink)
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BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
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std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
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node_ptr p = node_algorithms::insert_equal_upper_bound
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(this->tree_type::header_ptr(), to_insert, this->key_node_comp(this->key_comp())
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, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
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this->tree_type::sz_traits().increment();
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this->max_tree_size_ = (size_type)max_tree_size;
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return iterator(p, this->priv_value_traits_ptr());
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}
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//! @copydoc ::boost::intrusive::bstree::insert_equal(const_iterator,reference)
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iterator insert_equal(const_iterator hint, reference value)
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{
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node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
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if(safemode_or_autounlink)
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BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
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std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
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node_ptr p = node_algorithms::insert_equal
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( this->tree_type::header_ptr(), hint.pointed_node(), to_insert, this->key_node_comp(this->key_comp())
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, (std::size_t)this->size(), this->get_h_alpha_func(), max_tree_size);
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this->tree_type::sz_traits().increment();
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this->max_tree_size_ = (size_type)max_tree_size;
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return iterator(p, this->priv_value_traits_ptr());
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_equal(Iterator,Iterator)
|
|
template<class Iterator>
|
|
void insert_equal(Iterator b, Iterator e)
|
|
{
|
|
iterator iend(this->end());
|
|
for (; b != e; ++b)
|
|
this->insert_equal(iend, *b);
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique(reference)
|
|
std::pair<iterator, bool> insert_unique(reference value)
|
|
{
|
|
insert_commit_data commit_data;
|
|
std::pair<iterator, bool> ret = this->insert_unique_check
|
|
(key_of_value()(value), this->key_comp(), commit_data);
|
|
if(!ret.second)
|
|
return ret;
|
|
return std::pair<iterator, bool> (this->insert_unique_commit(value, commit_data), true);
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique(const_iterator,reference)
|
|
iterator insert_unique(const_iterator hint, reference value)
|
|
{
|
|
insert_commit_data commit_data;
|
|
std::pair<iterator, bool> ret = this->insert_unique_check
|
|
(hint, key_of_value()(value), this->key_comp(), commit_data);
|
|
if(!ret.second)
|
|
return ret.first;
|
|
return this->insert_unique_commit(value, commit_data);
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const KeyType&,KeyTypeKeyCompare,insert_commit_data&)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
BOOST_INTRUSIVE_DOC1ST(std::pair<iterator BOOST_INTRUSIVE_I bool>
|
|
, typename detail::disable_if_convertible
|
|
<KeyType BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I
|
|
std::pair<iterator BOOST_INTRUSIVE_I bool> >::type)
|
|
insert_unique_check
|
|
(const KeyType &key, KeyTypeKeyCompare comp, insert_commit_data &commit_data)
|
|
{
|
|
std::pair<node_ptr, bool> ret =
|
|
node_algorithms::insert_unique_check
|
|
(this->tree_type::header_ptr(), key, this->key_node_comp(comp), commit_data);
|
|
return std::pair<iterator, bool>(iterator(ret.first, this->priv_value_traits_ptr()), ret.second);
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const_iterator,const KeyType&,KeyTypeKeyCompare,insert_commit_data&)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
std::pair<iterator, bool> insert_unique_check
|
|
(const_iterator hint, const KeyType &key
|
|
,KeyTypeKeyCompare comp, insert_commit_data &commit_data)
|
|
{
|
|
std::pair<node_ptr, bool> ret =
|
|
node_algorithms::insert_unique_check
|
|
(this->tree_type::header_ptr(), hint.pointed_node(), key, this->key_node_comp(comp), commit_data);
|
|
return std::pair<iterator, bool>(iterator(ret.first, this->priv_value_traits_ptr()), ret.second);
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const key_type&,insert_commit_data&)
|
|
std::pair<iterator, bool> insert_unique_check
|
|
(const key_type &key, insert_commit_data &commit_data)
|
|
{ return this->insert_unique_check(key, this->key_comp(), commit_data); }
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique_check(const_iterator,const key_type&,insert_commit_data&)
|
|
std::pair<iterator, bool> insert_unique_check
|
|
(const_iterator hint, const key_type &key, insert_commit_data &commit_data)
|
|
{ return this->insert_unique_check(hint, key, this->key_comp(), commit_data); }
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique_commit
|
|
iterator insert_unique_commit(reference value, const insert_commit_data &commit_data)
|
|
{
|
|
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
|
|
if(safemode_or_autounlink)
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
|
|
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
|
|
node_algorithms::insert_unique_commit
|
|
( this->tree_type::header_ptr(), to_insert, commit_data
|
|
, (std::size_t)this->size(), this->get_h_alpha_func(), max_tree_size);
|
|
this->tree_type::sz_traits().increment();
|
|
this->max_tree_size_ = (size_type)max_tree_size;
|
|
return iterator(to_insert, this->priv_value_traits_ptr());
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_unique(Iterator,Iterator)
|
|
template<class Iterator>
|
|
void insert_unique(Iterator b, Iterator e)
|
|
{
|
|
if(this->empty()){
|
|
iterator iend(this->end());
|
|
for (; b != e; ++b)
|
|
this->insert_unique(iend, *b);
|
|
}
|
|
else{
|
|
for (; b != e; ++b)
|
|
this->insert_unique(*b);
|
|
}
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::insert_before
|
|
iterator insert_before(const_iterator pos, reference value)
|
|
{
|
|
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
|
|
if(safemode_or_autounlink)
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
|
|
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
|
|
node_ptr p = node_algorithms::insert_before
|
|
( this->tree_type::header_ptr(), pos.pointed_node(), to_insert
|
|
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
|
|
this->tree_type::sz_traits().increment();
|
|
this->max_tree_size_ = (size_type)max_tree_size;
|
|
return iterator(p, this->priv_value_traits_ptr());
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::push_back
|
|
void push_back(reference value)
|
|
{
|
|
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
|
|
if(safemode_or_autounlink)
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
|
|
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
|
|
node_algorithms::push_back
|
|
( this->tree_type::header_ptr(), to_insert
|
|
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
|
|
this->tree_type::sz_traits().increment();
|
|
this->max_tree_size_ = (size_type)max_tree_size;
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::push_front
|
|
void push_front(reference value)
|
|
{
|
|
node_ptr to_insert(this->get_value_traits().to_node_ptr(value));
|
|
if(safemode_or_autounlink)
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(node_algorithms::unique(to_insert));
|
|
std::size_t max_tree_size = (std::size_t)this->max_tree_size_;
|
|
node_algorithms::push_front
|
|
( this->tree_type::header_ptr(), to_insert
|
|
, (size_type)this->size(), this->get_h_alpha_func(), max_tree_size);
|
|
this->tree_type::sz_traits().increment();
|
|
this->max_tree_size_ = (size_type)max_tree_size;
|
|
}
|
|
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase(const_iterator)
|
|
iterator erase(const_iterator i)
|
|
{
|
|
const_iterator ret(i);
|
|
++ret;
|
|
node_ptr to_erase(i.pointed_node());
|
|
if(safemode_or_autounlink)
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!node_algorithms::unique(to_erase));
|
|
std::size_t max_tree_size = this->max_tree_size_;
|
|
node_algorithms::erase
|
|
( this->tree_type::header_ptr(), to_erase, (std::size_t)this->size()
|
|
, max_tree_size, this->get_alpha_by_max_size_func());
|
|
this->max_tree_size_ = (size_type)max_tree_size;
|
|
this->tree_type::sz_traits().decrement();
|
|
if(safemode_or_autounlink)
|
|
node_algorithms::init(to_erase);
|
|
return ret.unconst();
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase(const_iterator,const_iterator)
|
|
iterator erase(const_iterator b, const_iterator e)
|
|
{ size_type n; return private_erase(b, e, n); }
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase(const key_type &)
|
|
size_type erase(const key_type &key)
|
|
{ return this->erase(key, this->key_comp()); }
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase(const KeyType&,KeyTypeKeyCompare)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
BOOST_INTRUSIVE_DOC1ST(size_type
|
|
, typename detail::disable_if_convertible<KeyTypeKeyCompare BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I size_type>::type)
|
|
erase(const KeyType& key, KeyTypeKeyCompare comp)
|
|
{
|
|
std::pair<iterator,iterator> p = this->equal_range(key, comp);
|
|
size_type n;
|
|
private_erase(p.first, p.second, n);
|
|
return n;
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const_iterator,Disposer)
|
|
template<class Disposer>
|
|
iterator erase_and_dispose(const_iterator i, Disposer disposer)
|
|
{
|
|
node_ptr to_erase(i.pointed_node());
|
|
iterator ret(this->erase(i));
|
|
disposer(this->get_value_traits().to_value_ptr(to_erase));
|
|
return ret;
|
|
}
|
|
|
|
#if !defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
|
|
template<class Disposer>
|
|
iterator erase_and_dispose(iterator i, Disposer disposer)
|
|
{ return this->erase_and_dispose(const_iterator(i), disposer); }
|
|
#endif
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const_iterator,const_iterator,Disposer)
|
|
template<class Disposer>
|
|
iterator erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer)
|
|
{ size_type n; return private_erase(b, e, n, disposer); }
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const key_type &, Disposer)
|
|
template<class Disposer>
|
|
size_type erase_and_dispose(const key_type &key, Disposer disposer)
|
|
{
|
|
std::pair<iterator,iterator> p = this->equal_range(key);
|
|
size_type n;
|
|
private_erase(p.first, p.second, n, disposer);
|
|
return n;
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::erase_and_dispose(const KeyType&,KeyTypeKeyCompare,Disposer)
|
|
template<class KeyType, class KeyTypeKeyCompare, class Disposer>
|
|
BOOST_INTRUSIVE_DOC1ST(size_type
|
|
, typename detail::disable_if_convertible<KeyTypeKeyCompare BOOST_INTRUSIVE_I const_iterator BOOST_INTRUSIVE_I size_type>::type)
|
|
erase_and_dispose(const KeyType& key, KeyTypeKeyCompare comp, Disposer disposer)
|
|
{
|
|
std::pair<iterator,iterator> p = this->equal_range(key, comp);
|
|
size_type n;
|
|
private_erase(p.first, p.second, n, disposer);
|
|
return n;
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::clear
|
|
void clear()
|
|
{
|
|
tree_type::clear();
|
|
this->max_tree_size_ = 0;
|
|
}
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::clear_and_dispose
|
|
template<class Disposer>
|
|
void clear_and_dispose(Disposer disposer)
|
|
{
|
|
tree_type::clear_and_dispose(disposer);
|
|
this->max_tree_size_ = 0;
|
|
}
|
|
|
|
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
|
|
//! @copydoc ::boost::intrusive::bstree::merge_unique
|
|
template<class T, class ...Options2> void merge_unique(sgtree<T, Options2...> &);
|
|
#else
|
|
template<class Compare2>
|
|
void merge_unique(sgtree_impl
|
|
<ValueTraits, VoidOrKeyOfValue, Compare2, SizeType, FloatingPoint, HeaderHolder> &source)
|
|
#endif
|
|
{
|
|
node_ptr it (node_algorithms::begin_node(source.header_ptr()))
|
|
, itend(node_algorithms::end_node (source.header_ptr()));
|
|
|
|
while(it != itend){
|
|
node_ptr const p(it);
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!safemode_or_autounlink || !node_algorithms::unique(p));
|
|
it = node_algorithms::next_node(it);
|
|
|
|
std::size_t max_tree1_size = this->max_tree_size_;
|
|
std::size_t max_tree2_size = source.get_max_tree_size();
|
|
if( node_algorithms::transfer_unique
|
|
( this->header_ptr(), this->key_node_comp(this->key_comp()), this->size(), max_tree1_size
|
|
, source.header_ptr(), p, source.size(), max_tree2_size
|
|
, this->get_h_alpha_func(), this->get_alpha_by_max_size_func()) ){
|
|
this->max_tree_size_ = (size_type)max_tree1_size;
|
|
this->sz_traits().increment();
|
|
source.get_max_tree_size() = (size_type)max_tree2_size;
|
|
source.sz_traits().decrement();
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
|
|
//! @copydoc ::boost::intrusive::bstree::merge_equal
|
|
template<class T, class ...Options2> void merge_equal(sgtree<T, Options2...> &);
|
|
#else
|
|
template<class Compare2>
|
|
void merge_equal(sgtree_impl
|
|
<ValueTraits, VoidOrKeyOfValue, Compare2, SizeType, FloatingPoint, HeaderHolder> &source)
|
|
#endif
|
|
{
|
|
node_ptr it (node_algorithms::begin_node(source.header_ptr()))
|
|
, itend(node_algorithms::end_node (source.header_ptr()));
|
|
|
|
while(it != itend){
|
|
node_ptr const p(it);
|
|
BOOST_INTRUSIVE_SAFE_HOOK_DEFAULT_ASSERT(!safemode_or_autounlink || !node_algorithms::unique(p));
|
|
it = node_algorithms::next_node(it);
|
|
std::size_t max_tree1_size = this->max_tree_size_;
|
|
std::size_t max_tree2_size = source.get_max_tree_size();
|
|
node_algorithms::transfer_equal
|
|
( this->header_ptr(), this->key_node_comp(this->key_comp()), this->size(), max_tree1_size
|
|
, source.header_ptr(), p, source.size(), max_tree2_size
|
|
, this->get_h_alpha_func(), this->get_alpha_by_max_size_func());
|
|
this->max_tree_size_ = (size_type)max_tree1_size;
|
|
this->sz_traits().increment();
|
|
source.get_max_tree_size() = (size_type)max_tree2_size;
|
|
source.sz_traits().decrement();
|
|
}
|
|
}
|
|
|
|
#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
|
|
//! @copydoc ::boost::intrusive::bstree::count(const key_type &)const
|
|
size_type count(const key_type &key) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::count(const KeyType&,KeyTypeKeyCompare)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
size_type count(const KeyType& key, KeyTypeKeyCompare comp) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::lower_bound(const key_type &)
|
|
iterator lower_bound(const key_type &key);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::lower_bound(const KeyType&,KeyTypeKeyCompare)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
iterator lower_bound(const KeyType& key, KeyTypeKeyCompare comp);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::lower_bound(const key_type &)const
|
|
const_iterator lower_bound(const key_type &key) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::lower_bound(const KeyType&,KeyTypeKeyCompare)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
const_iterator lower_bound(const KeyType& key, KeyTypeKeyCompare comp) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::upper_bound(const key_type &)
|
|
iterator upper_bound(const key_type &key);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::upper_bound(const KeyType&,KeyTypeKeyCompare)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
iterator upper_bound(const KeyType& key, KeyTypeKeyCompare comp);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::upper_bound(const key_type &)const
|
|
const_iterator upper_bound(const key_type &key) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::upper_bound(const KeyType&,KeyTypeKeyCompare)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
const_iterator upper_bound(const KeyType& key, KeyTypeKeyCompare comp) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::find(const key_type &)
|
|
iterator find(const key_type &key);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::find(const KeyType&,KeyTypeKeyCompare)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
iterator find(const KeyType& key, KeyTypeKeyCompare comp);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::find(const key_type &)const
|
|
const_iterator find(const key_type &key) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::find(const KeyType&,KeyTypeKeyCompare)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
const_iterator find(const KeyType& key, KeyTypeKeyCompare comp) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::equal_range(const key_type &)
|
|
std::pair<iterator,iterator> equal_range(const key_type &key);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::equal_range(const KeyType&,KeyTypeKeyCompare)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
std::pair<iterator,iterator> equal_range(const KeyType& key, KeyTypeKeyCompare comp);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::equal_range(const key_type &)const
|
|
std::pair<const_iterator, const_iterator>
|
|
equal_range(const key_type &key) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::equal_range(const KeyType&,KeyTypeKeyCompare)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
std::pair<const_iterator, const_iterator>
|
|
equal_range(const KeyType& key, KeyTypeKeyCompare comp) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::bounded_range(const key_type &,const key_type &,bool,bool)
|
|
std::pair<iterator,iterator> bounded_range
|
|
(const key_type &lower_key, const key_type &upper_key, bool left_closed, bool right_closed);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::bounded_range(const KeyType&,const KeyType&,KeyTypeKeyCompare,bool,bool)
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
std::pair<iterator,iterator> bounded_range
|
|
(const KeyType& lower_key, const KeyType& upper_key, KeyTypeKeyCompare comp, bool left_closed, bool right_closed);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::bounded_range(const key_type &,const key_type &,bool,bool)const
|
|
std::pair<const_iterator, const_iterator>
|
|
bounded_range(const key_type &lower_key, const key_type &upper_key, bool left_closed, bool right_closed) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::bounded_range(const KeyType&,const KeyType&,KeyTypeKeyCompare,bool,bool)const
|
|
template<class KeyType, class KeyTypeKeyCompare>
|
|
std::pair<const_iterator, const_iterator> bounded_range
|
|
(const KeyType& lower_key, const KeyType& upper_key, KeyTypeKeyCompare comp, bool left_closed, bool right_closed) const;
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::s_iterator_to(reference)
|
|
static iterator s_iterator_to(reference value);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::s_iterator_to(const_reference)
|
|
static const_iterator s_iterator_to(const_reference value);
|
|
|
|
//! @copydoc ::boost::intrusive::bstree::iterator_to(reference)
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iterator iterator_to(reference value);
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//! @copydoc ::boost::intrusive::bstree::iterator_to(const_reference)const
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const_iterator iterator_to(const_reference value) const;
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//! @copydoc ::boost::intrusive::bstree::init_node(reference)
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static void init_node(reference value);
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//! @copydoc ::boost::intrusive::bstree::unlink_leftmost_without_rebalance
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pointer unlink_leftmost_without_rebalance();
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//! @copydoc ::boost::intrusive::bstree::replace_node
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void replace_node(iterator replace_this, reference with_this);
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//! @copydoc ::boost::intrusive::bstree::remove_node
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void remove_node(reference value);
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//! @copydoc ::boost::intrusive::bstree::rebalance
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void rebalance();
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//! @copydoc ::boost::intrusive::bstree::rebalance_subtree
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iterator rebalance_subtree(iterator root);
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friend bool operator< (const sgtree_impl &x, const sgtree_impl &y);
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friend bool operator==(const sgtree_impl &x, const sgtree_impl &y);
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friend bool operator!= (const sgtree_impl &x, const sgtree_impl &y);
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friend bool operator>(const sgtree_impl &x, const sgtree_impl &y);
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friend bool operator<=(const sgtree_impl &x, const sgtree_impl &y);
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friend bool operator>=(const sgtree_impl &x, const sgtree_impl &y);
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friend void swap(sgtree_impl &x, sgtree_impl &y);
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#endif //#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
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//! <b>Returns</b>: The balance factor (alpha) used in this tree
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Complexity</b>: Constant.
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float balance_factor() const
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{ return this->get_alpha_traits().get_alpha(); }
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//! <b>Requires</b>: new_alpha must be a value between 0.5 and 1.0
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//!
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//! <b>Effects</b>: Establishes a new balance factor (alpha) and rebalances
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//! the tree if the new balance factor is stricter (less) than the old factor.
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Complexity</b>: Linear to the elements in the subtree.
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void balance_factor(float new_alpha)
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{
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//The alpha factor CAN't be changed if the fixed, floating operation-less
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//1/sqrt(2) alpha factor option is activated
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BOOST_STATIC_ASSERT((floating_point));
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BOOST_INTRUSIVE_INVARIANT_ASSERT((new_alpha > 0.5f && new_alpha < 1.0f));
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if(new_alpha >= 0.5f && new_alpha < 1.0f){
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float old_alpha = this->get_alpha_traits().get_alpha();
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this->get_alpha_traits().set_alpha(new_alpha);
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if(new_alpha < old_alpha){
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this->max_tree_size_ = this->size();
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this->rebalance();
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}
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}
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}
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/// @cond
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private:
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template<class Disposer>
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iterator private_erase(const_iterator b, const_iterator e, size_type &n, Disposer disposer)
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|
{
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|
for(n = 0; b != e; ++n)
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this->erase_and_dispose(b++, disposer);
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|
return b.unconst();
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|
}
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|
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|
iterator private_erase(const_iterator b, const_iterator e, size_type &n)
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|
{
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|
for(n = 0; b != e; ++n)
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|
this->erase(b++);
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return b.unconst();
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|
}
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/// @endcond
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|
};
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|
|
|
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|
//! Helper metafunction to define a \c sgtree that yields to the same type when the
|
|
//! same options (either explicitly or implicitly) are used.
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|
#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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|
template<class T, class ...Options>
|
|
#else
|
|
template<class T, class O1 = void, class O2 = void
|
|
, class O3 = void, class O4 = void
|
|
, class O5 = void, class O6 = void>
|
|
#endif
|
|
struct make_sgtree
|
|
{
|
|
/// @cond
|
|
typedef typename pack_options
|
|
< sgtree_defaults,
|
|
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4, O5, O6
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
|
|
typedef typename detail::get_value_traits
|
|
<T, typename packed_options::proto_value_traits>::type value_traits;
|
|
|
|
typedef sgtree_impl
|
|
< value_traits
|
|
, typename packed_options::key_of_value
|
|
, typename packed_options::compare
|
|
, typename packed_options::size_type
|
|
, packed_options::floating_point
|
|
, typename packed_options::header_holder_type
|
|
> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
|
|
#ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
|
|
|
|
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
|
|
template<class T, class O1, class O2, class O3, class O4, class O5, class O6>
|
|
#else
|
|
template<class T, class ...Options>
|
|
#endif
|
|
class sgtree
|
|
: public make_sgtree<T,
|
|
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4, O5, O6
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type
|
|
{
|
|
typedef typename make_sgtree
|
|
<T,
|
|
#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4, O5, O6
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type Base;
|
|
BOOST_MOVABLE_BUT_NOT_COPYABLE(sgtree)
|
|
|
|
public:
|
|
typedef typename Base::key_compare key_compare;
|
|
typedef typename Base::value_traits value_traits;
|
|
typedef typename Base::iterator iterator;
|
|
typedef typename Base::const_iterator const_iterator;
|
|
typedef typename Base::reverse_iterator reverse_iterator;
|
|
typedef typename Base::const_reverse_iterator const_reverse_iterator;
|
|
|
|
//Assert if passed value traits are compatible with the type
|
|
BOOST_STATIC_ASSERT((detail::is_same<typename value_traits::value_type, T>::value));
|
|
|
|
sgtree()
|
|
: Base()
|
|
{}
|
|
|
|
explicit sgtree(const key_compare &cmp, const value_traits &v_traits = value_traits())
|
|
: Base(cmp, v_traits)
|
|
{}
|
|
|
|
template<class Iterator>
|
|
sgtree( bool unique, Iterator b, Iterator e
|
|
, const key_compare &cmp = key_compare()
|
|
, const value_traits &v_traits = value_traits())
|
|
: Base(unique, b, e, cmp, v_traits)
|
|
{}
|
|
|
|
sgtree(BOOST_RV_REF(sgtree) x)
|
|
: Base(BOOST_MOVE_BASE(Base, x))
|
|
{}
|
|
|
|
sgtree& operator=(BOOST_RV_REF(sgtree) x)
|
|
{ return static_cast<sgtree &>(this->Base::operator=(BOOST_MOVE_BASE(Base, x))); }
|
|
|
|
template <class Cloner, class Disposer>
|
|
void clone_from(const sgtree &src, Cloner cloner, Disposer disposer)
|
|
{ Base::clone_from(src, cloner, disposer); }
|
|
|
|
template <class Cloner, class Disposer>
|
|
void clone_from(BOOST_RV_REF(sgtree) src, Cloner cloner, Disposer disposer)
|
|
{ Base::clone_from(BOOST_MOVE_BASE(Base, src), cloner, disposer); }
|
|
|
|
static sgtree &container_from_end_iterator(iterator end_iterator)
|
|
{ return static_cast<sgtree &>(Base::container_from_end_iterator(end_iterator)); }
|
|
|
|
static const sgtree &container_from_end_iterator(const_iterator end_iterator)
|
|
{ return static_cast<const sgtree &>(Base::container_from_end_iterator(end_iterator)); }
|
|
|
|
static sgtree &container_from_iterator(iterator it)
|
|
{ return static_cast<sgtree &>(Base::container_from_iterator(it)); }
|
|
|
|
static const sgtree &container_from_iterator(const_iterator it)
|
|
{ return static_cast<const sgtree &>(Base::container_from_iterator(it)); }
|
|
};
|
|
|
|
#endif
|
|
|
|
} //namespace intrusive
|
|
} //namespace boost
|
|
|
|
#include <boost/intrusive/detail/config_end.hpp>
|
|
|
|
#endif //BOOST_INTRUSIVE_SGTREE_HPP
|