libstdc++-v3/testsuite/performance/25_algorithms/find_istreambuf_iterators.cc

   1 // Copyright (C) 2006-2016 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 <iterator>
  20 #include <sstream>
  21 #include <algorithm>
  22 #include <testsuite_performance.h>
  23
  24 // libstdc++/25482
  25 int main()
  26 {
  27   using namespace std;
  28   using namespace __gnu_test;
  29
  30   typedef istreambuf_iterator<char> in_iterator_type;
  31
  32   istringstream iss("a0000b1111c2222d3333e4444f5555g6666h7777i8888j9999"
  33                     "k0000l1111m2222n3333o4444p5555q6666r7777s8888t9999");
  34
  35   in_iterator_type beg(iss);
  36   in_iterator_type end;
  37
  38   time_counter time;
  39   resource_counter resource;
  40
  41   start_counters(time, resource);
  42   for (unsigned i = 0; i < 1000000; ++i)
  43     {
  44       for (char c = 'a'; c < 'u'; ++c)
  45         {
  46           find(beg, end, c);
  47           iss.seekg(0);
  48         }
  49     }
  50   stop_counters(time, resource);
  51   report_performance(__FILE__, "", time, resource);
  52
  53   return 0;
  54 }