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83a1beee TR |
1 | // { dg-options "-std=gnu++2a -pthread" } |
2 | // { dg-do run { target c++2a } } | |
3 | // { dg-require-effective-target pthread } | |
4 | // { dg-require-gthreads "" } | |
fd62daea | 5 | // { dg-add-options libatomic } |
83a1beee | 6 | |
7adcbafe | 7 | // Copyright (C) 2020-2022 Free Software Foundation, Inc. |
83a1beee TR |
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> | |
83a1beee TR |
26 | |
27 | #include <testsuite_hooks.h> | |
28 | ||
25e5ecdf TR |
29 | template<typename S> |
30 | void | |
31 | test (S va, S vb) | |
32 | { | |
eb3a3bb8 TR |
33 | if constexpr (std::atomic_ref<S>::is_always_lock_free) |
34 | { | |
35 | S aa{ va }; | |
eb3a3bb8 | 36 | std::atomic_ref<S> a{ aa }; |
f9f1a6ef | 37 | a.wait(vb); |
eb3a3bb8 TR |
38 | std::thread t([&] |
39 | { | |
f9f1a6ef | 40 | a.store(vb); |
eb3a3bb8 TR |
41 | a.notify_one(); |
42 | }); | |
f9f1a6ef | 43 | a.wait(va); |
eb3a3bb8 TR |
44 | t.join(); |
45 | } | |
25e5ecdf TR |
46 | } |
47 | ||
b52aef3a TR |
48 | int |
49 | main () | |
83a1beee | 50 | { |
25e5ecdf TR |
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 | ||
b52aef3a | 58 | struct S{ int i; }; |
25e5ecdf | 59 | test<S>(S{ 0 }, S{ 42 }); |
83a1beee TR |
60 | return 0; |
61 | } |