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// Copyright (C) 2020-2025 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/>.
// { dg-do run { target c++20 } }
// { dg-require-gthreads "" }
// { dg-additional-options "-pthread" { target pthread } }
// { dg-add-options libatomic }
#include <latch>
#include <atomic>
#include <thread>
#include <testsuite_hooks.h>
void
test01()
{
std::latch l(3);
VERIFY( !l.try_wait() );
auto fn = [&]
{
l.count_down();
};
std::thread t0(fn);
std::thread t1(fn);
l.arrive_and_wait();
t0.join();
t1.join();
VERIFY( l.try_wait() );
}
void
test02()
{
std::latch l(3);
std::thread t([&]
{
l.count_down();
});
l.arrive_and_wait(2);
t.join();
VERIFY( l.try_wait() );
}
int main()
{
test01();
test02();
return 0;
}
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