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1 | // { dg-options "-std=gnu++2a -pthread" } | |
2 | // { dg-do run { target c++2a } } | |
3 | // { dg-require-effective-target pthread } | |
4 | // { dg-require-gthreads "" } | |
5 | // { dg-add-options libatomic } | |
6 | ||
7 | // Copyright (C) 2020-2022 Free Software Foundation, Inc. | |
8 | // | |
9 | // This file is part of the GNU ISO C++ Library. This library is free | |
10 | // software; you can redistribute it and/or modify it under the | |
11 | // terms of the GNU General Public License as published by the | |
12 | // Free Software Foundation; either version 3, or (at your option) | |
13 | // any later version. | |
14 | ||
15 | // This library is distributed in the hope that it will be useful, | |
16 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | // GNU General Public License for more details. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License along | |
21 | // with this library; see the file COPYING3. If not see | |
22 | // <http://www.gnu.org/licenses/>. | |
23 | ||
24 | #include <atomic> | |
25 | #include <thread> | |
26 | ||
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | template<typename S> | |
30 | void | |
31 | test (S va, S vb) | |
32 | { | |
33 | if constexpr (std::atomic_ref<S>::is_always_lock_free) | |
34 | { | |
35 | S aa{ va }; | |
36 | std::atomic_ref<S> a{ aa }; | |
37 | a.wait(vb); | |
38 | std::thread t([&] | |
39 | { | |
40 | a.store(vb); | |
41 | a.notify_one(); | |
42 | }); | |
43 | a.wait(va); | |
44 | t.join(); | |
45 | } | |
46 | } | |
47 | ||
48 | int | |
49 | main () | |
50 | { | |
51 | test<int>(0, 42); | |
52 | test<long>(0, 42); | |
53 | test<unsigned>(0u, 42u); | |
54 | test<float>(0.0f, 42.0f); | |
55 | test<double>(0.0, 42.0); | |
56 | test<void*>(nullptr, reinterpret_cast<void*>(42)); | |
57 | ||
58 | struct S{ int i; }; | |
59 | test<S>(S{ 0 }, S{ 42 }); | |
60 | return 0; | |
61 | } |