libstdc++-v3/testsuite/performance/23_containers/insert/unordered_map_array.cc

   1 // Copyright (C) 2006 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // As a special exception, you may use this file as part of a free software
  20 // library without restriction.  Specifically, if other files instantiate
  21 // templates or use macros or inline functions from this file, or you compile
  22 // this file and link it with other files to produce an executable, this
  23 // file does not by itself cause the resulting executable to be covered by
  24 // the GNU General Public License.  This exception does not however
  25 // invalidate any other reasons why the executable file might be covered by
  26 // the GNU General Public License.
  27
  28 #include <tr1/unordered_map>
  29 #include <testsuite_performance.h>
  30
  31 typedef std::tr1::unordered_map<int, int> map_type;
  32 typedef std::tr1::unordered_map<int, map_type> matrix_type;
  33
  34 int main()
  35 {
  36   using namespace __gnu_test;
  37
  38   time_counter time;
  39   resource_counter resource;
  40
  41   const int sz = 1000;
  42
  43   matrix_type matrix;
  44
  45   start_counters(time, resource);
  46   for (int iter = 0; iter < 50; ++iter)
  47     {
  48       for (int i = 0; i < sz; ++i)
  49         {
  50           for (int j = 0; j < sz; ++j)
  51             {
  52               map_type& row = matrix[i / 4];
  53               ++row[j / 4];
  54             }
  55         }
  56     }
  57   stop_counters(time, resource);
  58   report_performance(__FILE__, "", time, resource);
  59
  60   return 0;
  61 }