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 && x86_64-apple-macosx10.15
15 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.14
16 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.13
17 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.12
18 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.11
19 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.10
20 // XFAIL: use_system_cxx_lib && x86_64-apple-macosx10.9
21 
22 // <semaphore>
23 
24 #include <semaphore>
25 #include <chrono>
26 #include <thread>
27 
28 #include "make_test_thread.h"
29 #include "test_macros.h"
30 
31 int main(int, char**)
32 {
33   std::binary_semaphore s(1);
34 
35   auto l = [&](){
36     for(int i = 0; i < 1024; ++i) {
37         s.acquire();
38         std::this_thread::sleep_for(std::chrono::microseconds(1));
39         s.release();
40     }
41   };
42 
43   std::thread t = support::make_test_thread(l);
44   l();
45 
46   t.join();
47 
48   return 0;
49 }
50