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// { dg-do run { target c++20 } }
// { dg-require-gthreads "" }
// { dg-additional-options "-pthread" { target pthread } }
// { dg-add-options libatomic }
// 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/>.
// This test is based on libcxx/test/std/thread/thread.barrier/completion.pass.cpp
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <barrier>
#include <thread>
#include <testsuite_hooks.h>
int main(int, char**)
{
int x = 0;
auto comp = [&] { x += 1; };
std::barrier<decltype(comp)> b(2, comp);
std::thread t([&](){
for(int i = 0; i < 10; ++i)
b.arrive_and_wait();
});
for(int i = 0; i < 10; ++i)
b.arrive_and_wait();
VERIFY( x == 10 );
t.join();
}
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