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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc')
-rw-r--r-- | libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc b/libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc new file mode 100644 index 000000000..f12d49774 --- /dev/null +++ b/libstdc++-v3/testsuite/performance/27_io/ifstream_extract_chars.cc @@ -0,0 +1,82 @@ +// 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; +} |