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

   1 // Copyright (C) 2003-2023 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 <testsuite_performance.h>
  21
  22 int main()
  23 {
  24   using namespace std;
  25   using namespace __gnu_test;
  26
  27   time_counter time;
  28   resource_counter resource;
  29   wchar_t bufwc[] = L"Mi innamoravo di tutto (Fabrizio De Andre')";
  30   char bufc[sizeof(bufwc) / sizeof(wchar_t)];
  31
  32   locale loc;
  33   const ctype<wchar_t>& ct = use_facet<ctype<wchar_t> >(loc);
  34
  35   // narrow
  36   start_counters(time, resource);
  37   for (long i = 0; i < 200000000; ++i)
  38     ct.narrow(i % 128, '*');
  39   stop_counters(time, resource);
  40   report_performance(__FILE__, "narrow", time, resource);
  41   clear_counters(time, resource);
  42
  43   // narrow array
  44   start_counters(time, resource);
  45   for (long i = 0; i < 20000000; ++i)
  46     ct.narrow(bufwc, bufwc + sizeof(bufwc) / sizeof(wchar_t), '*', bufc);
  47   stop_counters(time, resource);
  48   report_performance(__FILE__, "narrow array", time, resource);
  49   clear_counters(time, resource);
  50
  51   // widen
  52   start_counters(time, resource);
  53   for (long i = 0; i < 200000000; ++i)
  54     ct.widen(i % 128);
  55   stop_counters(time, resource);
  56   report_performance(__FILE__, "widen", time, resource);
  57   clear_counters(time, resource);
  58
  59   // widen array
  60   start_counters(time, resource);
  61   for (long i = 0; i < 20000000; ++i)
  62     ct.widen(bufc, bufc + sizeof(bufc), bufwc);
  63   stop_counters(time, resource);
  64   report_performance(__FILE__, "widen array", time, resource);
  65
  66   return 0;
  67 }