libstdc++-v3/testsuite/util/performance/priority_queue/timing/push_test.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2020 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 push_test.hpp
  34  * Contains a push performance test.
  35  */
  36
  37 #ifndef PB_DS_PUSH_TEST_HPP
  38 #define PB_DS_PUSH_TEST_HPP
  39
  40 #include <performance/time/timing_test_base.hpp>
  41 #include <ext/pb_ds/detail/type_utils.hpp>
  42 #include <performance/io/xml_formatter.hpp>
  43 #include <common_type/priority_queue/string_form.hpp>
  44 #include <iterator>
  45
  46 namespace __gnu_pbds
  47 {
  48   namespace test
  49   {
  50     namespace detail
  51     {
  52       template<typename It, class Cntnr>
  53       class push_push_functor
  54       {
  55       public:
  56         push_push_functor(It ins_it_b,  It ins_it_e)
  57         : m_ins_it_b(ins_it_b), m_ins_it_e(ins_it_e)
  58         { }
  59
  60         void
  61         operator()(std::size_t resolution)
  62         {
  63           for (std::size_t i = 0; i < resolution; ++i)
  64             {
  65               Cntnr cntnr;
  66               for (It ins_it = m_ins_it_b; ins_it != m_ins_it_e; ++ins_it)
  67                 cntnr.push((typename Cntnr::const_reference)(ins_it->first));
  68             }
  69         }
  70
  71       private:
  72         const It m_ins_it_b;
  73         const It m_ins_it_e;
  74       };
  75     } // namespace detail
  76
  77     template<typename It>
  78     class push_test : private __gnu_pbds::test::detail::timing_test_base
  79     {
  80     public:
  81       push_test(It ins_b, size_t ins_vn, size_t ins_vs, size_t ins_vm)
  82       : m_ins_b(ins_b), m_ins_vn(ins_vn), m_ins_vs(ins_vs), m_ins_vm(ins_vm)
  83       { }
  84
  85       template<typename Cntnr>
  86       void
  87       operator()(Cntnr);
  88
  89     private:
  90       push_test(const push_test& );
  91
  92       template<typename Cntnr>
  93       void
  94       push(Cntnr, It ins_it_b, It ins_it_e);
  95
  96       const It m_ins_b;
  97       const size_t m_ins_vn;
  98       const size_t m_ins_vs;
  99       const size_t m_ins_vm;
 100     };
 101
 102
 103     template<typename It>
 104     template<typename Cntnr>
 105     void
 106     push_test<It>::
 107     operator()(Cntnr)
 108     {
 109       typedef xml_result_set_performance_formatter formatter_type;
 110       formatter_type res_set_fmt(string_form<Cntnr>::name(),
 111                                  string_form<Cntnr>::desc());
 112
 113       for (size_t i = 0; m_ins_vn + i * m_ins_vs < m_ins_vm; ++i)
 114         {
 115           const size_t v = m_ins_vn + i * m_ins_vs;
 116           It ins_it_b = m_ins_b;
 117           It ins_it_e = m_ins_b;
 118           std::advance(ins_it_e, v);
 119
 120           __gnu_pbds::test::detail::push_push_functor<It, Cntnr>
 121             fn(ins_it_b, ins_it_e);
 122
 123           const double res =
 124             __gnu_pbds::test::detail::timing_test_base::operator()(fn);
 125
 126           res_set_fmt.add_res(v, res / v);
 127         }
 128     }
 129
 130     template<typename It>
 131     template<typename Cntnr>
 132     void
 133     push_test<It>::
 134     push(Cntnr, It ins_it_b, It ins_it_e)
 135     {
 136       Cntnr cntnr;
 137       for (It ins_it = ins_it_b; ins_it != ins_it_e; ++ins_it)
 138         cntnr.push((typename Cntnr::const_reference)(*ins_it));
 139     }
 140   } // namespace test
 141 } // namespace __gnu_pbds
 142
 143 #endif
 144