1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// UNSUPPORTED: no-threads
10// UNSUPPORTED: c++03, c++11, c++14, c++17
11
12// XFAIL: availability-synchronization_library-missing
13
14// <barrier>
15
16#include <barrier>
17#include <thread>
18#include <cassert>
19
20#include "make_test_thread.h"
21#include "test_macros.h"
22
23int main(int, char**)
24{
25 std::barrier<> b(2);
26
27 std::thread t = support::make_test_thread([&](){
28 b.arrive_and_drop();
29 });
30
31 b.arrive_and_wait();
32 b.arrive_and_wait();
33 t.join();
34 return 0;
35}
36

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source code of libcxx/test/std/thread/thread.barrier/arrive_and_drop.pass.cpp