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 // template <class Mutex> class unique_lock; 13 14 // unique_lock(mutex_type& m, defer_lock_t); 15 16 #include <mutex> 17 #include <cassert> 18 19 int main() 20 { 21 std::mutex m; 22 std::unique_lock<std::mutex> lk(m, std::defer_lock); 23 assert(lk.mutex() == &m); 24 assert(lk.owns_lock() == false); 25 } 26
