| // { dg-do run { target c++17 } } |
| // { dg-additional-options "-pthread" { target pthread } } |
| // { dg-require-gthreads "" } |
| |
| // Copyright (C) 2015-2021 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 <shared_mutex> |
| #include <thread> |
| |
| using mutex_type = std::shared_mutex; |
| |
| mutex_type m; |
| |
| void f() |
| { |
| std::lock_guard<mutex_type> l(m); |
| } |
| |
| int main() |
| { |
| std::thread t1(f); |
| std::thread t2(f); |
| t1.join(); |
| t2.join(); |
| } |
