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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 | |
83f51799 | 16 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
ceed88b1 PC |
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 | |
34 | int 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 | } |