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a945c346 | 1 | // Copyright (C) 2005-2024 Free Software Foundation, Inc. |
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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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
c7c2e831 | 18 | #include <unistd.h> |
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19 | #include <cstdio> |
20 | #include <fstream> | |
21 | #include <string> | |
22 | #include <testsuite_performance.h> | |
23 | ||
24 | // libstdc++/22515 | |
25 | int main() | |
26 | { | |
27 | using namespace std; | |
28 | using namespace __gnu_test; | |
29 | ||
30 | time_counter time; | |
31 | resource_counter resource; | |
32 | ||
33 | const char filename[] = "tmp_perf_chars.txt"; | |
34 | const unsigned lines = 200000; | |
35 | const unsigned line_length = 200; | |
36 | ||
37 | char* line = new char[line_length + 2]; | |
38 | ||
39 | // Construct data. | |
40 | { | |
41 | memset(line, 'x', line_length); | |
42 | line[line_length] = '\n'; | |
43 | line[line_length + 1] = '\0'; | |
44 | ||
45 | ofstream out(filename); | |
46 | for (unsigned i = 0; i < lines; ++i) | |
47 | out << line; | |
48 | } | |
49 | ||
50 | // operator>>(basic_istream<char>& __in, basic_string<char>& __str) | |
51 | { | |
52 | start_counters(time, resource); | |
53 | for (int iter = 0; iter < 25; ++iter) | |
54 | { | |
55 | ifstream file(filename); | |
56 | string string_line; | |
57 | ||
58 | while (file >> string_line); | |
59 | } | |
60 | stop_counters(time, resource); | |
61 | report_performance(__FILE__, "string&", time, resource); | |
62 | clear_counters(time, resource); | |
63 | } | |
64 | ||
65 | // operator>>(basic_istream<char>& __in, char* __s) | |
66 | { | |
67 | start_counters(time, resource); | |
68 | for (int iter = 0; iter < 25; ++iter) | |
69 | { | |
70 | ifstream file(filename); | |
71 | ||
72 | while (file >> line); | |
73 | } | |
74 | stop_counters(time, resource); | |
75 | report_performance(__FILE__, "char*", time, resource); | |
76 | clear_counters(time, resource); | |
77 | } | |
78 | ||
79 | delete[] line; | |
80 | unlink(filename); | |
81 | return 0; | |
82 | } |