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
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 // <barrier>
16 
17 #include <barrier>
18 #include <thread>
19 #include <cassert>
20 
21 #include "make_test_thread.h"
22 #include "test_macros.h"
23 
24 int main(int, char**)
25 {
26   int x = 0;
27   auto comp = [&]() { x += 1; };
28   std::barrier<decltype(comp)> b(2, comp);
29 
30   std::thread t = support::make_test_thread([&](){
31       for(int i = 0; i < 10; ++i)
32         b.arrive_and_wait();
33   });
34 
35   for(int i = 0; i < 10; ++i)
36     b.arrive_and_wait();
37 
38   assert(x == 10);
39   t.join();
40   return 0;
41 }
42