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(unique_lock const&) = delete; 15 16 #include <mutex> 17 #include <cassert> 18 19 std::mutex m; 20 21 int main() 22 { 23 std::unique_lock<std::mutex> lk0(m); 24 std::unique_lock<std::mutex> lk = lk0; 25 assert(lk.mutex() == &m); 26 assert(lk.owns_lock() == true); 27 assert(lk0.mutex() == nullptr); 28 assert(lk0.owns_lock() == false); 29 } 30
