libstdc++-v3/testsuite/performance/27_io/fmtflags_manipulators.cc

   1 // Copyright (C) 2004 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 <cstdlib>
  29 #include <sstream>
  30 #include <testsuite_performance.h>
  31
  32 // libstdc++/14078
  33 int main(int argc, char** argv)
  34 {
  35   using namespace std;
  36   using namespace __gnu_test;
  37
  38   time_counter time;
  39   resource_counter resource;
  40
  41   int iters = 50000000;
  42   if (argc > 1)
  43     iters = atoi(argv[1]);
  44
  45   ostringstream os_s, os_m;
  46
  47   // setf
  48   start_counters(time, resource);
  49   for (int i = 0; i < iters; ++i)
  50     {
  51       os_s.setf(ios_base::uppercase);
  52       os_s.unsetf(ios_base::uppercase);
  53     }
  54   stop_counters(time, resource);
  55   report_performance(__FILE__, "setf", time, resource);
  56   clear_counters(time, resource);
  57
  58   // manipulator
  59   start_counters(time, resource);
  60   for (int i = 0; i < iters; ++i)
  61     {
  62       os_m << uppercase;
  63       os_m << nouppercase;
  64     }
  65   stop_counters(time, resource);
  66   report_performance(__FILE__, "manipulator", time, resource);
  67
  68   return 0;
  69 }