libstdc++-v3/testsuite/performance/22_locale/wchar_t_length.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 <cstdio>
  20 #include <cstring>
  21 #include <fstream>
  22 #include <langinfo.h>
  23 #include <iconv.h>
  24 #include <testsuite_performance.h>
  25
  26 // libstdc++/11602 (do_length)
  27 int main(int argc, char** argv)
  28 {
  29   using namespace std;
  30   using namespace __gnu_test;
  31
  32   time_counter time;
  33   resource_counter resource;
  34   const int iters = 400000;
  35
  36   char cbuf[1024];
  37
  38   memset(cbuf, 'a', 1024);
  39
  40   // C++ (codecvt)
  41   locale loc;
  42   const codecvt<wchar_t, char, mbstate_t>& cvt =
  43     use_facet<codecvt<wchar_t, char, mbstate_t> >(loc);
  44   mbstate_t state;
  45   memset(&state, 0, sizeof(state));
  46   start_counters(time, resource);
  47   for (int i = 0; i < iters; ++i)
  48     cvt.length(state, cbuf, cbuf + 1024, 1024);
  49   stop_counters(time, resource);
  50   report_performance(__FILE__, "C++ (codecvt)", time, resource);
  51
  52   return 0;
  53 }