libstdc++-v3/testsuite/util/performance/priority_queue/mem_usage/pop_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 pop_test.hpp
  34  * Contains a generic pop test.
  35  */
  36
  37 #ifndef PB_DS_POP_TEST_HPP
  38 #define PB_DS_POP_TEST_HPP
  39
  40 #include <iterator>
  41 #include <testsuite_allocator.h>
  42 #include <ext/pb_ds/detail/type_utils.hpp>
  43 #include <performance/io/xml_formatter.hpp>
  44 #include <common_type/priority_queue/string_form.hpp>
  45 #include <cassert>
  46
  47 namespace __gnu_pbds
  48 {
  49   namespace test
  50   {
  51     template<typename It>
  52     class pop_test
  53     {
  54     public:
  55       pop_test(It ins_b, size_t ins_vn, size_t ins_vs, size_t ins_vm)
  56       : m_ins_b(ins_b), m_ins_vn(ins_vn), m_ins_vs(ins_vs), m_ins_vm(ins_vm)
  57       { }
  58
  59       template<typename Cntnr>
  60       void
  61       operator()(Cntnr);
  62
  63     private:
  64       pop_test(const pop_test&);
  65
  66       const It m_ins_b;
  67       const size_t m_ins_vn;
  68       const size_t m_ins_vs;
  69       const size_t m_ins_vm;
  70     };
  71
  72     template<typename It>
  73     template<typename Cntnr>
  74     void
  75     pop_test<It>::
  76     operator()(Cntnr)
  77     {
  78       typedef xml_result_set_performance_formatter formatter_type;
  79      formatter_type res_set_fmt(string_form<Cntnr>::name(),
  80                                 string_form<Cntnr>::desc());
  81
  82       for (size_t i = 0; m_ins_vn + i * m_ins_vs < m_ins_vm; ++i)
  83         {
  84           const size_t ins_size = m_ins_vn + i * m_ins_vs;
  85           It ins_it_b = m_ins_b;
  86           It ins_it_e = m_ins_b;
  87           std::advance(ins_it_e, ins_size);
  88
  89           typedef __gnu_test::tracker_allocator_counter counter_type;
  90           __gnu_test::tracker_allocator<char> alloc;
  91
  92           const size_t init_mem = counter_type::get_allocation_count()
  93                                   - counter_type::get_deallocation_count();
  94           Cntnr cntnr;
  95           for (It ins_it =    ins_it_b; ins_it != ins_it_e; ++ins_it)
  96             cntnr.push(ins_it->first);
  97
  98           while (cntnr.size() > 1)
  99             cntnr.pop();
 100
 101           const size_t final_mem = counter_type::get_allocation_count()
 102                                    - counter_type::get_deallocation_count();
 103           assert(final_mem > init_mem);
 104           const size_t delta_mem = final_mem - init_mem;
 105           res_set_fmt.add_res(ins_size, static_cast<double>(delta_mem));
 106         }
 107     }
 108   } // namespace test
 109 } // namespace __gnu_pbds
 110
 111 #endif
 112