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99dee823 | 1 | // Copyright (C) 2009-2021 Free Software Foundation, Inc. |
3cee0c65 JW |
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 3, 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 COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | ||
19 | #include <atomic> | |
20 | #include <testsuite_performance.h> | |
21 | ||
22 | volatile std::atomic_flag af; | |
23 | volatile std::atomic_uchar ac; | |
24 | volatile std::atomic_int ai; | |
25 | ||
26 | int main() | |
27 | { | |
28 | using namespace __gnu_test; | |
29 | time_counter time; | |
30 | resource_counter resource; | |
31 | ||
32 | const int n = 100000000; | |
33 | ||
34 | start_counters(time, resource); | |
35 | for (int i = 0; i < n; ++i) | |
36 | af.test_and_set(); | |
37 | stop_counters(time, resource); | |
38 | report_performance(__FILE__, "atomic_flag::test_and_set()", time, resource); | |
39 | ||
40 | start_counters(time, resource); | |
41 | for (int i = 0; i < n; ++i) | |
42 | af.clear(); | |
43 | stop_counters(time, resource); | |
44 | report_performance(__FILE__, "atomic_flag::clear()", time, resource); | |
45 | ||
46 | start_counters(time, resource); | |
47 | for (int i = 0; i < n; ++i) | |
48 | ac |= 1; | |
49 | stop_counters(time, resource); | |
50 | report_performance(__FILE__, "atomic_uchar::operator|=(1)", time, resource); | |
51 | ||
52 | start_counters(time, resource); | |
53 | for (int i = 0; i < n; ++i) | |
54 | ac = 0; | |
55 | stop_counters(time, resource); | |
56 | report_performance(__FILE__, "atomic_flag::operator=(0)", time, resource); | |
57 | ||
58 | start_counters(time, resource); | |
59 | for (int i = 0; i < n; ++i) | |
60 | ai |= 1; | |
61 | stop_counters(time, resource); | |
62 | report_performance(__FILE__, "atomic_int::operator|=(1)", time, resource); | |
63 | ||
64 | start_counters(time, resource); | |
65 | for (int i = 0; i < n; ++i) | |
66 | ai = 0; | |
67 | stop_counters(time, resource); | |
68 | report_performance(__FILE__, "atomic_int::operator=(0)", time, resource); | |
69 | ||
70 | return 0; | |
71 | } |