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: libcpp-has-no-threads
10 // UNSUPPORTED: c++98, c++03, c++11
11 
12 // <barrier>
13 
14 #include <barrier>
15 #include <thread>
16 
17 #include "test_macros.h"
18 
19 int main(int, char**)
20 {
21   std::barrier<> b(2);
22 
23   auto tok = b.arrive();
24   std::thread t([&](){
25     (void)b.arrive();
26   });
27   b.wait(std::move(tok));
28   t.join();
29 
30   auto tok2 = b.arrive(2);
31   b.wait(std::move(tok2));
32   return 0;
33 }
34