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 <thread> 27 #include <chrono> 28 29 #include "make_test_thread.h" 30 #include "test_macros.h" 31 32 int main(int, char**) 33 { 34 auto const start = std::chrono::steady_clock::now(); 35 36 std::counting_semaphore<> s(0); 37 38 assert(!s.try_acquire_until(start + std::chrono::milliseconds(250))); 39 assert(!s.try_acquire_for(std::chrono::milliseconds(250))); 40 41 std::thread t = support::make_test_thread([&](){ 42 std::this_thread::sleep_for(std::chrono::milliseconds(250)); 43 s.release(); 44 std::this_thread::sleep_for(std::chrono::milliseconds(250)); 45 s.release(); 46 }); 47 48 assert(s.try_acquire_until(start + std::chrono::seconds(2))); 49 assert(s.try_acquire_for(std::chrono::seconds(2))); 50 t.join(); 51 52 auto const end = std::chrono::steady_clock::now(); 53 assert(end - start < std::chrono::seconds(10)); 54 55 return 0; 56 } 57