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

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2019 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  22
  23 // Permission to use, copy, modify, sell, and distribute this software
  24 // is hereby granted without fee, provided that the above copyright
  25 // notice appears in all copies, and that both that copyright notice
  26 // and this permission notice appear in supporting documentation. None
  27 // of the above authors, nor IBM Haifa Research Laboratories, make any
  28 // representation about the suitability of this software for any
  29 // purpose. It is provided "as is" without express or implied
  30 // warranty.
  31
  32 /**
  33  * @file subscript_find_test.hpp
  34  * Contains a generic subscript_find_test test.
  35  */
  36
  37 #ifndef PB_DS_SUBSCRIPT_TEST_HPP
  38 #define PB_DS_SUBSCRIPT_TEST_HPP
  39
  40 #include <performance/time/timing_test_base.hpp>
  41 #include <common_type/assoc/string_form.hpp>
  42 #include <iterator>
  43
  44 namespace __gnu_pbds
  45 {
  46   namespace test
  47   {
  48     namespace detail
  49     {
  50       template<typename It, class Cntnr>
  51       class subscript_find_functor
  52       {
  53       public:
  54         subscript_find_functor(Cntnr& container,  It fnd_it_b,  It fnd_it_e)
  55         : m_r_container(container), m_fnd_it_b(fnd_it_b), m_fnd_it_e(fnd_it_e)
  56         { }
  57
  58         void
  59         operator()(std::size_t resolution)
  60         {
  61           for (std::size_t i = 0; i < resolution; ++i)
  62             {
  63               It fnd_it = m_fnd_it_b;
  64               while (fnd_it != m_fnd_it_e)
  65                 ++m_r_container[(fnd_it++)->first];
  66               ++fnd_it;
  67             }
  68         }
  69
  70       private:
  71         Cntnr& m_r_container;
  72         const It m_fnd_it_b;
  73         const It m_fnd_it_e;
  74       };
  75
  76     } // namespace detail
  77
  78     template<typename It>
  79     class subscript_find_test : private __gnu_pbds::test::detail::timing_test_base
  80     {
  81     public:
  82       subscript_find_test(It ins_b, It b, size_t ins_vn, size_t ins_vs,
  83                           size_t ins_vm, size_t vn, size_t vs, size_t vm)
  84       : m_ins_b(ins_b), m_fnd_b(b), m_ins_vn(ins_vn), m_ins_vs(ins_vs),
  85         m_ins_vm(ins_vm), m_fnd_vn(vn), m_fnd_vs(vs), m_fnd_vm(vm)
  86       { }
  87
  88       template<typename Cntnr>
  89       void
  90       operator()(Cntnr);
  91
  92     private:
  93       subscript_find_test(const subscript_find_test&);
  94
  95     private:
  96       const It m_ins_b;
  97       const It m_fnd_b;
  98       const size_t m_ins_vn;
  99       const size_t m_ins_vs;
 100       const size_t m_ins_vm;
 101       const size_t m_fnd_vn;
 102       const size_t m_fnd_vs;
 103       const size_t m_fnd_vm;
 104     };
 105
 106    template<typename It>
 107    template<typename Cntnr>
 108     void
 109     subscript_find_test<It>::
 110     operator()(Cntnr)
 111     {
 112       typedef xml_result_set_performance_formatter formatter_type;
 113       formatter_type res_set_fmt(string_form<Cntnr>::name(),
 114                                  string_form<Cntnr>::desc());
 115
 116       for (size_t i = 0; m_ins_vn + i*  m_ins_vs < m_ins_vm; ++i)
 117         {
 118           const size_t v = m_ins_vn + i*  m_ins_vs;
 119           const size_t fnd_size = m_fnd_vn + i*  m_fnd_vs;
 120
 121           It ins_it_b = m_ins_b;
 122           It ins_it_e = m_ins_b;
 123           std::advance(ins_it_e, v);
 124
 125           Cntnr test_container(ins_it_b, ins_it_e);
 126
 127           It fnd_it_b = m_fnd_b;
 128           It fnd_it_e = m_fnd_b;
 129           std::advance(fnd_it_e, fnd_size);
 130
 131           __gnu_pbds::test::detail::subscript_find_functor<It, Cntnr>
 132             fn(test_container, fnd_it_b, fnd_it_e);
 133
 134           const double res =
 135             __gnu_pbds::test::detail::timing_test_base::operator()(fn);
 136
 137           res_set_fmt.add_res(v, res / fnd_size);
 138         }
 139     }
 140   } // namespace test
 141 } // namespace __gnu_pbds
 142
 143 #endif
 144