libstdc++-v3/testsuite/performance/22_locale/is_wchar_t.cc

   1 // Copyright (C) 2003-2017 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 <locale>
  20 #include <cwctype>
  21 #include <cstddef>
  22 #include <testsuite_performance.h>
  23
  24 int main()
  25 {
  26   using namespace std;
  27   using namespace __gnu_test;
  28
  29   time_counter time;
  30   resource_counter resource;
  31   const wchar_t str[] =
  32     L"Is this the real life?\n"
  33     L"Is this just fantasy?\n"
  34     L"Caught in a landslide\n"
  35     L"No escape from reality\n"
  36     L"Open your eyes\n"
  37     L"Look up to the skies and see\n"
  38     L"I'm just a poor boy\n"
  39     L"I need no sympathy\n"
  40     L"Because I'm easy come, easy go\n"
  41     L"Little high, little low"
  42     L"Anyway the wind blows\n"
  43     L"Doesn't really matter to me\n"
  44     L"To me\n"
  45     L"                      -- Queen\n";
  46   const size_t len = sizeof(str) / sizeof(str[0]) - 1;
  47
  48   locale loc;
  49   const ctype<wchar_t>& ct = use_facet<ctype<wchar_t> >(loc);
  50
  51   // C
  52   wctype_t w = wctype("space");
  53   start_counters(time, resource);
  54   for (int j = 0; j < 200000; ++j)
  55     {
  56       for (size_t i = 0; i < len; ++i)
  57         {
  58           iswctype(str[i], w);
  59         }
  60     }
  61   stop_counters(time, resource);
  62   report_performance(__FILE__, "C", time, resource);
  63   clear_counters(time, resource);
  64
  65   // C++
  66   start_counters(time, resource);
  67   for (int j = 0; j < 200000; ++j)
  68     {
  69       for (size_t i = 0; i < len; ++i)
  70         {
  71           ct.is(ctype_base::space, str[i]);
  72         }
  73     }
  74   stop_counters(time, resource);
  75   report_performance(__FILE__, "C++", time, resource);
  76
  77   return 0;
  78 }