2022-10-27 18:55:19 +00:00
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// Copyright (C) 2020-2022 Free Software Foundation, Inc.
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2012-03-27 23:13:14 +00:00
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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2022-10-27 18:55:19 +00:00
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// { dg-options "-std=gnu++2a" }
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// { dg-do run { target c++2a } }
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// { dg-require-gthreads "" }
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// { dg-additional-options "-pthread" { target pthread } }
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// { dg-add-options libatomic }
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2012-03-27 23:13:14 +00:00
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2022-10-27 18:55:19 +00:00
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#include <latch>
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#include <atomic>
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2012-03-27 23:13:14 +00:00
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#include <thread>
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#include <testsuite_hooks.h>
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2022-10-27 18:55:19 +00:00
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void
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test01()
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2012-03-27 23:13:14 +00:00
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{
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2022-10-27 18:55:19 +00:00
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std::latch l(3);
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VERIFY( !l.try_wait() );
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auto fn = [&]
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{
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l.count_down();
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};
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std::thread t0(fn);
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std::thread t1(fn);
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l.arrive_and_wait();
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t0.join();
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t1.join();
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2012-03-27 23:13:14 +00:00
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2022-10-27 18:55:19 +00:00
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VERIFY( l.try_wait() );
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2012-03-27 23:13:14 +00:00
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}
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2022-10-27 18:55:19 +00:00
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void
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test02()
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2012-03-27 23:13:14 +00:00
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{
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2022-10-27 18:55:19 +00:00
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std::latch l(3);
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std::thread t([&]
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2012-03-27 23:13:14 +00:00
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{
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2022-10-27 18:55:19 +00:00
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l.count_down();
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});
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2012-03-27 23:13:14 +00:00
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2022-10-27 18:55:19 +00:00
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l.arrive_and_wait(2);
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t.join();
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VERIFY( l.try_wait() );
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}
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int main()
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{
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test01();
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test02();
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2012-03-27 23:13:14 +00:00
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return 0;
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}
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