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Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [testsuite/] [performance/] [27_io/] [ifstream_extract_chars.cc] - Rev 516
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// Copyright (C) 2005, 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. #include <cstdio> #include <fstream> #include <string> #include <testsuite_performance.h> // libstdc++/22515 int main() { using namespace std; using namespace __gnu_test; time_counter time; resource_counter resource; const char filename[] = "tmp_perf_chars.txt"; const unsigned lines = 200000; const unsigned line_length = 200; char* line = new char[line_length + 2]; // Construct data. { memset(line, 'x', line_length); line[line_length] = '\n'; line[line_length + 1] = '\0'; ofstream out(filename); for (unsigned i = 0; i < lines; ++i) out << line; } // operator>>(basic_istream<char>& __in, basic_string<char>& __str) { start_counters(time, resource); for (int iter = 0; iter < 25; ++iter) { ifstream file(filename); string string_line; while (file >> string_line); } stop_counters(time, resource); report_performance(__FILE__, "string&", time, resource); clear_counters(time, resource); } // operator>>(basic_istream<char>& __in, char* __s) { start_counters(time, resource); for (int iter = 0; iter < 25; ++iter) { ifstream file(filename); while (file >> line); } stop_counters(time, resource); report_performance(__FILE__, "char*", time, resource); clear_counters(time, resource); } delete[] line; unlink(filename); return 0; }