1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <mutex> 11 12 // struct defer_lock_t {}; 13 // struct try_to_lock_t {}; 14 // struct adopt_lock_t {}; 15 // 16 // constexpr defer_lock_t defer_lock{}; 17 // constexpr try_to_lock_t try_to_lock{}; 18 // constexpr adopt_lock_t adopt_lock{}; 19 20 #include <mutex> 21 #include <type_traits> 22 23 int main() 24 { 25 typedef std::defer_lock_t T1; 26 typedef std::try_to_lock_t T2; 27 typedef std::adopt_lock_t T3; 28 29 T1 t1 = std::defer_lock; 30 T2 t2 = std::try_to_lock; 31 T3 t3 = std::adopt_lock; 32 } 33