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// Copyright (C) 2004-2018 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 <unistd.h>
#include <cstdio>
#include <fstream>
#include <string>
#include <testsuite_performance.h>
// libstdc++/15002
int main()
{
using namespace std;
using namespace __gnu_test;
time_counter time;
resource_counter resource;
const char filename[] = "tmp_getline.txt";
const unsigned lines = 1000000;
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;
}
// C
{
// Fill the cache.
FILE *file = fopen(filename, "r");
while (fgets(line, line_length + 2, file));
fclose(file);
file = fopen(filename, "r");
start_counters(time, resource);
while (fgets(line, line_length + 2, file));
stop_counters(time, resource);
fclose(file);
report_performance(__FILE__, "C (fgets)", time, resource);
clear_counters(time, resource);
}
// getline(basic_istream<_CharT, _Traits>& __in,
// basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim)
{
ifstream file(filename);
string string_line;
start_counters(time, resource);
while (getline(file, string_line));
stop_counters(time, resource);
report_performance(__FILE__, "C++ (string)", time, resource);
clear_counters(time, resource);
}
// getline(char_type* __s, streamsize __n, char_type __delim)
{
ifstream file(filename);
start_counters(time, resource);
while (file.getline(line, line_length + 2));
stop_counters(time, resource);
report_performance(__FILE__, "C++ (char array)", time, resource);
clear_counters(time, resource);
}
delete[] line;
unlink(filename);
return 0;
}
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