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 // UNSUPPORTED: c++98, c++03, c++11 12 13 // <shared_mutex> 14 15 // template <class Mutex> class shared_lock; 16 17 // shared_lock(mutex_type& m, defer_lock_t); 18 19 #include <shared_mutex> 20 #include <cassert> 21 #include "nasty_containers.hpp" 22 23 int main() 24 { 25 { 26 typedef std::shared_timed_mutex M; 27 M m; 28 std::unique_lock<M> lk(m, std::defer_lock); 29 assert(lk.mutex() == std::addressof(m)); 30 assert(lk.owns_lock() == false); 31 } 32 { 33 typedef nasty_mutex M; 34 M m; 35 std::unique_lock<M> lk(m, std::defer_lock); 36 assert(lk.mutex() == std::addressof(m)); 37 assert(lk.owns_lock() == false); 38 } 39 } 40
