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f1717362 | 1 | // Copyright (C) 2004-2016 Free Software Foundation, Inc. |
c526271f | 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 | |
6bc9506f | 6 | // Free Software Foundation; either version 3, or (at your option) |
c526271f | 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 | |
6bc9506f | 15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
c4d8e05b | 18 | #include <unistd.h> |
c526271f | 19 | #include <cstdio> |
20 | #include <fstream> | |
21 | #include <testsuite_performance.h> | |
22 | ||
23 | // libstdc++/11378 | |
24 | int main() | |
25 | { | |
26 | using namespace std; | |
27 | using namespace __gnu_test; | |
28 | ||
29 | time_counter time; | |
30 | resource_counter resource; | |
31 | ||
32 | const int iterations = 500000; | |
33 | const int chunksize = 100; | |
34 | ||
35 | char* chunk = new char[chunksize]; | |
36 | ||
37 | // C | |
38 | FILE* file = fopen("tmp", "w+"); | |
39 | setvbuf(file, 0, _IONBF, 0); | |
40 | start_counters(time, resource); | |
41 | for (int i = 0; i < iterations; ++i) | |
42 | fwrite(chunk, 1, chunksize, file); | |
43 | stop_counters(time, resource); | |
44 | fclose(file); | |
45 | report_performance(__FILE__, "C", time, resource); | |
46 | clear_counters(time, resource); | |
47 | ||
48 | // C unlocked | |
49 | file = fopen("tmp", "w+"); | |
50 | setvbuf(file, 0, _IONBF, 0); | |
51 | start_counters(time, resource); | |
52 | for (int i = 0; i < iterations; ++i) | |
53 | fwrite_unlocked(chunk, 1, chunksize, file); | |
54 | stop_counters(time, resource); | |
55 | fclose(file); | |
56 | report_performance(__FILE__, "C unlocked", time, resource); | |
57 | clear_counters(time, resource); | |
58 | ||
59 | // C++ | |
60 | filebuf buf; | |
61 | buf.pubsetbuf(0, 0); | |
62 | buf.open("tmp", ios_base::out | ios_base::in | ios_base::trunc); | |
63 | start_counters(time, resource); | |
64 | for (int i = 0; i < iterations; ++i) | |
65 | buf.sputn(chunk, chunksize); | |
66 | stop_counters(time, resource); | |
67 | report_performance(__FILE__, "C++", time, resource); | |
68 | ||
69 | unlink("tmp"); | |
70 | delete [] chunk; | |
71 | ||
72 | return 0; | |
73 | } |