libstdc++-v3/testsuite/util/performance/assoc/timing/tree_split_join_test.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
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  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
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  40 // warranty.
  41
  42 /**
  43  * @file tree_split_join_test.hpp
  44  * Contains a test for splitting and joining trees
  45  */
  46
  47 #ifndef PB_DS_TREE_SPLIT_JOIN_TEST_HPP
  48 #define PB_DS_TREE_SPLIT_JOIN_TEST_HPP
  49
  50 #include <performance/time/timing_test_base.hpp>
  51 #include <performance/io/xml_formatter.hpp>
  52 #include <common_type/assoc/string_form.hpp>
  53 #include <iterator>
  54
  55 namespace __gnu_pbds
  56 {
  57   namespace test
  58   {
  59     namespace detail
  60     {
  61       template<typename Cntnr, bool Support_Split_Join>
  62       class split_join_functor
  63       {
  64       public:
  65         split_join_functor(Cntnr& r_container) : m_r_container(r_container)
  66         { }
  67
  68         void
  69         operator()(std::size_t resolution)
  70         {
  71           for (std::size_t i = 0; i < resolution; ++i)
  72             {
  73               typename Cntnr::const_iterator mid_it = m_r_container.begin();
  74               std::advance(mid_it, m_r_container.size() / 2);
  75               Cntnr other;
  76               m_r_container.split(*mid_it, other);
  77               m_r_container.join(other);
  78             }
  79         }
  80
  81       private:
  82         Cntnr& m_r_container;
  83       };
  84
  85       template<typename Cntnr>
  86       class split_join_functor<Cntnr, false>
  87       {
  88       public:
  89         split_join_functor(Cntnr& r_container) : m_r_container(r_container)
  90         { }
  91
  92         void
  93         operator()(std::size_t resolution)
  94         {
  95           for (std::size_t i = 0; i < resolution; ++i)
  96             {
  97               typename Cntnr::iterator mid_it = m_r_container.begin();
  98               std::advance(mid_it, m_r_container.size() / 2);
  99
 100               Cntnr other(mid_it, m_r_container.end());
 101               m_r_container.erase(mid_it, m_r_container.end());
 102
 103               m_r_container.insert(other.begin(), other.end());
 104               other.clear();
 105             }
 106         }
 107
 108       private:
 109         Cntnr& m_r_container;
 110       };
 111     } // namespace detail
 112
 113     template<bool Support_Split_Join>
 114     class tree_split_join_test : private __gnu_pbds::test::detail::timing_test_base
 115     {
 116     public:
 117       tree_split_join_test(size_t vn, size_t vs, size_t vm);
 118
 119       template<typename Cntnr>
 120       void
 121       operator()(Cntnr);
 122
 123     private:
 124       tree_split_join_test(const tree_split_join_test& );
 125
 126     private:
 127       const size_t m_vn;
 128       const size_t m_vs;
 129       const size_t m_vm;
 130     };
 131
 132     template<bool Support_Split_Join>
 133     tree_split_join_test<Support_Split_Join>::
 134     tree_split_join_test(size_t vn, size_t vs, size_t vm) :
 135       m_vn(vn),
 136       m_vs(vs),
 137       m_vm(vm)
 138     { }
 139
 140     template<bool Support_Split_Join>
 141     template<typename Cntnr>
 142     void
 143     tree_split_join_test<Support_Split_Join>::
 144     operator()(Cntnr)
 145     {
 146       typedef xml_result_set_performance_formatter formatter_type;
 147       formatter_type res_set_fmt(string_form<Cntnr>::name(),
 148                                  string_form<Cntnr>::desc());
 149
 150       for (size_t v = m_vn; v < m_vm; v += m_vs)
 151         {
 152           Cntnr cntnr;
 153           for (size_t ins = 0; ins < v; ++ ins)
 154             cntnr.insert((typename Cntnr::value_type)ins);
 155
 156           __gnu_pbds::test::detail::split_join_functor<Cntnr, Support_Split_Join>
 157             fn(cntnr);
 158
 159           const double res =
 160             __gnu_pbds::test::detail::timing_test_base::operator()(fn);
 161           res_set_fmt.add_res(v, res);
 162         }
 163     }
 164   } // namespace test
 165 } // namespace __gnu_pbds
 166
 167 #endif
 168