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 <cassert> 26 #include <semaphore> 27 #include <thread> 28 29 #include "make_test_thread.h" 30 #include "test_macros.h" 31 main(int,char **)32int main(int, char**) 33 { 34 std::counting_semaphore<> s(1); 35 36 assert(s.try_acquire()); 37 s.release(); 38 assert(s.try_acquire()); 39 s.release(2); 40 std::thread t = support::make_test_thread([&](){ 41 assert(s.try_acquire()); 42 }); 43 t.join(); 44 assert(s.try_acquire()); 45 46 return 0; 47 } 48