mutex_defer_lock.pass.cpp (941B)
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 // UNSUPPORTED: libcpp-has-no-threads 11 12 // <mutex> 13 14 // template <class Mutex> class unique_lock; 15 16 // unique_lock(mutex_type& m, defer_lock_t); 17 18 #include <mutex> 19 #include <cassert> 20 #include "nasty_containers.hpp" 21 22 int main() 23 { 24 { 25 typedef std::mutex M; 26 M m; 27 std::unique_lock<M> lk(m, std::defer_lock); 28 assert(lk.mutex() == std::addressof(m)); 29 assert(lk.owns_lock() == false); 30 } 31 { 32 typedef nasty_mutex M; 33 M m; 34 std::unique_lock<M> lk(m, std::defer_lock); 35 assert(lk.mutex() == std::addressof(m)); 36 assert(lk.owns_lock() == false); 37 } 38 }