libstdc++-v3/testsuite/performance/21_strings/string_find.cc

   1  // Copyright (C) 2004, 2009 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 <string>
  20 #include <testsuite_performance.h>
  21
  22 void
  23 test_pair(const std::string& s, const std::string& f, int n)
  24 {
  25   std::string::size_type sz = 0;
  26
  27   for (int i = 0; i < n; ++i)
  28     sz = s.find(f);
  29 }
  30
  31 int main()
  32 {
  33   using namespace std;
  34   using namespace __gnu_test;
  35
  36   time_counter time;
  37   resource_counter resource;
  38
  39   const unsigned int iterations = 2000000;
  40
  41   string s, f;
  42   s = "aabbaabbaaxd adbffdadgaxaabbbddhatyaaaabbbaabbaabbcsy";
  43   f = "aabbaabbc";
  44   start_counters(time, resource);
  45   test_pair(s, f, iterations);
  46   stop_counters(time, resource);
  47   report_performance(__FILE__, "1", time, resource);
  48   clear_counters(time, resource);
  49
  50   f = "aabbb";
  51   start_counters(time, resource);
  52   test_pair(s, f, iterations);
  53   stop_counters(time, resource);
  54   report_performance(__FILE__, "2", time, resource);
  55   clear_counters(time, resource);
  56
  57   f = "xd";
  58   start_counters(time, resource);
  59   test_pair(s, f, iterations);
  60   stop_counters(time, resource);
  61   report_performance(__FILE__, "3", time, resource);
  62   clear_counters(time, resource);
  63
  64   s = "dhruv is a very very good boy ;-)";
  65   f = "very";
  66   start_counters(time, resource);
  67   test_pair(s, f, iterations);
  68   stop_counters(time, resource);
  69   report_performance(__FILE__, "4", time, resource);
  70   clear_counters(time, resource);
  71
  72   f = "bad";
  73   start_counters(time, resource);
  74   test_pair(s, f, iterations);
  75   stop_counters(time, resource);
  76   report_performance(__FILE__, "5", time, resource);
  77   clear_counters(time, resource);
  78
  79   f = "extra irritating";
  80   start_counters(time, resource);
  81   test_pair(s, f, iterations);
  82   stop_counters(time, resource);
  83   report_performance(__FILE__, "6", time, resource);
  84   clear_counters(time, resource);
  85
  86   s = "this is a very this is a very this is a verty this is a very "
  87       "this is a very long sentence";
  88   f = "this is a very long sentence";
  89   start_counters(time, resource);
  90   test_pair(s, f, iterations);
  91   stop_counters(time, resource);
  92   report_performance(__FILE__, "7", time, resource);
  93   clear_counters(time, resource);
  94
  95   return 0;
  96 }