libstdc++-v3/testsuite/performance/23_containers/insert/unordered_set.cc

   1 // Copyright (C) 2012-2021 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 // { dg-do run { target c++11 } }
  19
  20 #include <testsuite_performance.h>
  21 #include <sstream>
  22 #ifdef _USE_TR1
  23 #  include <tr1/unordered_set>
  24 using namespace std::tr1;
  25 const char* ns = "std::tr1::";
  26 #else
  27 #  include<unordered_set>
  28 using namespace std;
  29 const char* ns = "std::";
  30 #endif
  31
  32 int main()
  33 {
  34   using namespace __gnu_test;
  35
  36   time_counter time;
  37   resource_counter resource;
  38
  39   const int sz = 10000000;
  40
  41   unordered_set<int> s;
  42   start_counters(time, resource);
  43
  44   for (int i = 0; i != sz ; ++i)
  45     s.insert(i);
  46
  47   stop_counters(time, resource);
  48   std::ostringstream ostr;
  49   ostr << ns << "unordered_set " << sz << " insertions";
  50   report_performance(__FILE__, ostr.str().c_str(),
  51                      time, resource);
  52   return 0;
  53 }