| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| // { dg-require-gthreads "" } |
| // { dg-additional-options "-pthread" { target pthread } } |
| // { dg-add-options libatomic } |
| |
| // Copyright (C) 2020-2022 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| |
| #include <atomic> |
| #include <thread> |
| |
| #include <testsuite_hooks.h> |
| |
| template<typename Tp> |
| void |
| check() |
| { |
| std::atomic<Tp> a{ 1.0 }; |
| VERIFY( a.load() != 0.0 ); |
| a.wait( 0.0 ); |
| std::thread t([&] |
| { |
| a.store(0.0); |
| a.notify_one(); |
| }); |
| a.wait(1.0); |
| t.join(); |
| } |
| |
| int |
| main () |
| { |
| check<float>(); |
| check<double>(); |
| return 0; |
| } |