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 macOS 11.0.
13 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
14 
15 // TODO(ldionne): This test fails on Ubuntu Focal on our CI nodes (and only there), in 32 bit mode.
16 // UNSUPPORTED: linux && 32bits-on-64bits
17 
18 // <barrier>
19 
20 #include <barrier>
21 #include <thread>
22 
23 #include "make_test_thread.h"
24 #include "test_macros.h"
25 
26 int main(int, char**)
27 {
28   std::barrier<> b(2);
29 
30   auto tok = b.arrive();
31   std::thread t = support::make_test_thread([&](){
32     (void)b.arrive();
33   });
34   b.wait(std::move(tok));
35   t.join();
36 
37   auto tok2 = b.arrive(2);
38   b.wait(std::move(tok2));
39   return 0;
40 }
41