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& operator=(unique_lock const&) = delete; 15 16 #include <mutex> 17 #include <cassert> 18 19 int main() 20 { 21 { 22 typedef std::mutex M; 23 M m0; 24 M m1; 25 std::unique_lock<M> lk0(m0); 26 std::unique_lock<M> lk1(m1); 27 lk1 = lk0; 28 assert(lk1.mutex() == &m0); 29 assert(lk1.owns_lock() == true); 30 assert(lk0.mutex() == nullptr); 31 assert(lk0.owns_lock() == false); 32 } 33 } 34
