libstdc++-v3/testsuite/performance/23_containers/insert_from_sorted/set.cc

   1 // Copyright (C) 2003-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18
  19 #include <testsuite_performance.h>
  20
  21 template<typename Container, int Iter>
  22   void
  23   do_loop()
  24   {
  25     // avoid excessive swap file use!
  26     static const unsigned max_size = 250000;
  27
  28     // make results less random while
  29     static const unsigned iterations = 10;
  30
  31     // keeping the total time reasonable
  32     static const unsigned step = 50000;
  33
  34     using namespace std;
  35     typedef int test_type;
  36     typedef Container container_type;
  37     typedef vector<test_type> vector_type;
  38
  39     // Initialize sorted array.
  40     vector_type v(max_size, 0);
  41     for (unsigned int i = 0; i != max_size; ++i)
  42       v[i] = i;
  43
  44     for (unsigned int count = step; count <= max_size; count += step)
  45       {
  46         for (unsigned i = 0; i != iterations; ++i)
  47           {
  48             container_type test_set;
  49             typename container_type::iterator iter = test_set.end();
  50
  51             // Each insert in amortized constant time (Table 69)
  52             for (unsigned j = 0; j != count; ++j)
  53               iter = test_set.insert(iter, v[j]);
  54           }
  55     }
  56
  57   }
  58
  59 int
  60 main()
  61 {
  62 #ifdef TEST_S1
  63 #define thread_type false
  64 #endif
  65
  66 #ifdef TEST_T1
  67 #define thread_type true
  68 #endif
  69
  70   typedef __gnu_test::sets<int, thread_type>::type container_types;
  71   typedef test_sequence<thread_type> test_type;
  72   test_type test("insert_from_sorted");
  73   __gnu_cxx::typelist::apply(test, container_types());
  74
  75   return 0;
  76 }
  77