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

   1 // Copyright (C) 2003-2020 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 <fstream>
  20 #include <cstdlib>
  21 #include <testsuite_performance.h>
  22
  23 // libstdc++/5001 (100,000 line input file)
  24 int main ()
  25 {
  26   using namespace std;
  27   using namespace __gnu_test;
  28
  29   time_counter time;
  30   resource_counter resource;
  31
  32   const char* name1 = "/usr/share/dict/words";
  33   const char* name2 = "/usr/share/dict/linux.words";
  34   ifstream in;
  35   in.open(name1);
  36   if (!in.is_open())
  37     {
  38       in.clear();
  39       in.open(name2);
  40     }
  41   if (!in.is_open())
  42     exit(1);
  43
  44   char buffer[BUFSIZ];
  45   start_counters(time, resource);
  46   while (in.good())
  47     in.getline(buffer, BUFSIZ);
  48   stop_counters(time, resource);
  49   report_performance(__FILE__, "", time, resource);
  50
  51   return 0;
  52 }