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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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 <sstream>
29#include <testsuite_performance.h>
30
31// libstdc++/16401 ostringstream in gcc 3.4.x very slow for big data
32void test01()
33{
34  using namespace std;
35  using namespace __gnu_test;
36
37  time_counter time;
38  resource_counter resource;
39
40  for(unsigned n = 10000; n <= 10000000; n *= 10)
41    {
42      ostringstream oss;
43      oss << "size = " << n;
44
45      ostringstream str;
46      start_counters(time, resource);
47      for(unsigned i = 0; i < n; ++i)
48	str << 'a';
49      stop_counters(time, resource);
50
51      report_performance(__FILE__, oss.str(), time, resource);
52      clear_counters(time, resource);
53    }
54}
55
56int main()
57{
58  test01();
59  return 0;
60}
61