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 // XFAIL: with_system_cxx_lib=macosx10.15 14 // XFAIL: with_system_cxx_lib=macosx10.14 15 // XFAIL: with_system_cxx_lib=macosx10.13 16 // XFAIL: with_system_cxx_lib=macosx10.12 17 // XFAIL: with_system_cxx_lib=macosx10.11 18 // XFAIL: with_system_cxx_lib=macosx10.10 19 // XFAIL: with_system_cxx_lib=macosx10.9 20 21 // <semaphore> 22 23 #include <semaphore> 24 #include <thread> 25 #include <chrono> 26 27 #include "test_macros.h" 28 29 int main(int, char**) 30 { 31 auto const start = std::chrono::steady_clock::now(); 32 33 std::counting_semaphore<> s(0); 34 35 assert(!s.try_acquire_until(start + std::chrono::milliseconds(250))); 36 assert(!s.try_acquire_for(std::chrono::milliseconds(250))); 37 38 std::thread t([&](){ 39 std::this_thread::sleep_for(std::chrono::milliseconds(250)); 40 s.release(); 41 std::this_thread::sleep_for(std::chrono::milliseconds(250)); 42 s.release(); 43 }); 44 45 assert(s.try_acquire_until(start + std::chrono::seconds(2))); 46 assert(s.try_acquire_for(std::chrono::seconds(2))); 47 t.join(); 48 49 auto const end = std::chrono::steady_clock::now(); 50 assert(end - start < std::chrono::seconds(10)); 51 52 return 0; 53 } 54