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

   1 // Copyright (C) 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  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 <locale>
  29 #include <testsuite_performance.h>
  30
  31 int main()
  32 {
  33   using namespace std;
  34   using namespace __gnu_test;
  35
  36   time_counter time;
  37   resource_counter resource;
  38   wchar_t bufwc[] = L"Mi innamoravo di tutto (Fabrizio De Andre')";
  39   char bufc[sizeof(bufwc) / sizeof(wchar_t)];
  40
  41   locale loc;
  42   const ctype<wchar_t>& ct = use_facet<ctype<wchar_t> >(loc);
  43
  44   // narrow
  45   start_counters(time, resource);
  46   for (long i = 0; i < 200000000; ++i)
  47     ct.narrow(i % 128, '*');
  48   stop_counters(time, resource);
  49   report_performance(__FILE__, "narrow", time, resource);
  50   clear_counters(time, resource);
  51
  52   // narrow array
  53   start_counters(time, resource);
  54   for (long i = 0; i < 20000000; ++i)
  55     ct.narrow(bufwc, bufwc + sizeof(bufwc) / sizeof(wchar_t), '*', bufc);
  56   stop_counters(time, resource);
  57   report_performance(__FILE__, "narrow array", time, resource);
  58   clear_counters(time, resource);
  59
  60   // widen
  61   start_counters(time, resource);
  62   for (long i = 0; i < 200000000; ++i)
  63     ct.widen(i % 128);
  64   stop_counters(time, resource);
  65   report_performance(__FILE__, "widen", time, resource);
  66   clear_counters(time, resource);
  67
  68   // widen array
  69   start_counters(time, resource);
  70   for (long i = 0; i < 20000000; ++i)
  71     ct.widen(bufc, bufc + sizeof(bufc), bufwc);
  72   stop_counters(time, resource);
  73   report_performance(__FILE__, "widen array", time, resource);
  74
  75   return 0;
  76 }