1 // Copyright (C) 2009-2022 Free Software Foundation, Inc.
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)
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.
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/>.
20 #include <testsuite_performance.h>
22 volatile std::atomic_flag af
;
23 volatile std::atomic_uchar ac
;
24 volatile std::atomic_int ai
;
28 using namespace __gnu_test
;
30 resource_counter resource
;
32 const int n
= 100000000;
34 start_counters(time
, resource
);
35 for (int i
= 0; i
< n
; ++i
)
37 stop_counters(time
, resource
);
38 report_performance(__FILE__
, "atomic_flag::test_and_set()", time
, resource
);
40 start_counters(time
, resource
);
41 for (int i
= 0; i
< n
; ++i
)
43 stop_counters(time
, resource
);
44 report_performance(__FILE__
, "atomic_flag::clear()", time
, resource
);
46 start_counters(time
, resource
);
47 for (int i
= 0; i
< n
; ++i
)
49 stop_counters(time
, resource
);
50 report_performance(__FILE__
, "atomic_uchar::operator|=(1)", time
, resource
);
52 start_counters(time
, resource
);
53 for (int i
= 0; i
< n
; ++i
)
55 stop_counters(time
, resource
);
56 report_performance(__FILE__
, "atomic_flag::operator=(0)", time
, resource
);
58 start_counters(time
, resource
);
59 for (int i
= 0; i
< n
; ++i
)
61 stop_counters(time
, resource
);
62 report_performance(__FILE__
, "atomic_int::operator|=(1)", time
, resource
);
64 start_counters(time
, resource
);
65 for (int i
= 0; i
< n
; ++i
)
67 stop_counters(time
, resource
);
68 report_performance(__FILE__
, "atomic_int::operator=(0)", time
, resource
);