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++03, c++11
11 
12 // This test requires the dylib support introduced in D68480, which shipped in
13 // macOS 11.0.
14 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
15 
16 // <barrier>
17 
18 #include <barrier>
19 #include <thread>
20 
21 #include "make_test_thread.h"
22 #include "test_macros.h"
23 
24 int main(int, char**)
25 {
26   std::barrier<> b(2);
27 
28   auto tok = b.arrive();
29   std::thread t = support::make_test_thread([&](){
30     (void)b.arrive();
31   });
32   b.wait(std::move(tok));
33   t.join();
34 
35   auto tok2 = b.arrive(2);
36   b.wait(std::move(tok2));
37   return 0;
38 }
39