1// Copyright (C) 2005 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 <cstdio> 29#include <fstream> 30#include <string> 31#include <testsuite_performance.h> 32 33// libstdc++/22515 34int main() 35{ 36 using namespace std; 37 using namespace __gnu_test; 38 39 time_counter time; 40 resource_counter resource; 41 42 const char filename[] = "tmp_perf_chars.txt"; 43 const unsigned lines = 200000; 44 const unsigned line_length = 200; 45 46 char* line = new char[line_length + 2]; 47 48 // Construct data. 49 { 50 memset(line, 'x', line_length); 51 line[line_length] = '\n'; 52 line[line_length + 1] = '\0'; 53 54 ofstream out(filename); 55 for (unsigned i = 0; i < lines; ++i) 56 out << line; 57 } 58 59 // operator>>(basic_istream<char>& __in, basic_string<char>& __str) 60 { 61 start_counters(time, resource); 62 for (int iter = 0; iter < 25; ++iter) 63 { 64 ifstream file(filename); 65 string string_line; 66 67 while (file >> string_line); 68 } 69 stop_counters(time, resource); 70 report_performance(__FILE__, "string&", time, resource); 71 clear_counters(time, resource); 72 } 73 74 // operator>>(basic_istream<char>& __in, char* __s) 75 { 76 start_counters(time, resource); 77 for (int iter = 0; iter < 25; ++iter) 78 { 79 ifstream file(filename); 80 81 while (file >> line); 82 } 83 stop_counters(time, resource); 84 report_performance(__FILE__, "char*", time, resource); 85 clear_counters(time, resource); 86 } 87 88 delete[] line; 89 unlink(filename); 90 return 0; 91} 92