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, 13 // which hasn't shipped yet. 14 // XFAIL: with_system_cxx_lib=macosx 15 // XFAIL: with_system_cxx_lib=macosx10.15 16 // XFAIL: with_system_cxx_lib=macosx10.14 17 // XFAIL: with_system_cxx_lib=macosx10.13 18 // XFAIL: with_system_cxx_lib=macosx10.12 19 // XFAIL: with_system_cxx_lib=macosx10.11 20 // XFAIL: with_system_cxx_lib=macosx10.10 21 // XFAIL: with_system_cxx_lib=macosx10.9 22 23 // <semaphore> 24 25 #include <semaphore> 26 #include <chrono> 27 #include <thread> 28 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(l); 44 l(); 45 46 t.join(); 47 48 return 0; 49 } 50