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