1 // Copyright (C) 2012 Vicente J. Botet Escriba
2 //
3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 
6 // <boost/thread/locks.hpp>
7 
8 // template <class Mutex> class nested_strict_lock;
9 
10 // bool owns_lock(Mutex *) const;
11 
12 #include <boost/thread/lock_types.hpp>
13 #include <boost/thread/strict_lock.hpp>
14 #include <boost/thread/mutex.hpp>
15 #include <boost/detail/lightweight_test.hpp>
16 
main()17 int main()
18 {
19   boost::mutex m;
20   boost::mutex m2;
21   {
22     boost::unique_lock<boost::mutex> lk(m);
23     {
24       boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlk(lk);
25       BOOST_TEST(nlk.owns_lock(&m) == true);
26       BOOST_TEST(!nlk.owns_lock(&m2) == true);
27     }
28     BOOST_TEST(lk.owns_lock() == true && lk.mutex()==&m);
29   }
30   {
31     m.lock();
32     boost::unique_lock<boost::mutex> lk(m, boost::adopt_lock);
33     {
34       boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlk(lk);
35       BOOST_TEST(nlk.owns_lock(&m) == true);
36       BOOST_TEST(!nlk.owns_lock(&m2) == true);
37     }
38     BOOST_TEST(lk.owns_lock() == true && lk.mutex()==&m);
39   }
40   {
41     boost::unique_lock<boost::mutex> lk(m, boost::defer_lock);
42     {
43       boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlk(lk);
44       BOOST_TEST(nlk.owns_lock(&m) == true);
45       BOOST_TEST(!nlk.owns_lock(&m2) == true);
46     }
47     BOOST_TEST(lk.owns_lock() == true && lk.mutex()==&m);
48   }
49   {
50     boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
51     {
52       boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlk(lk);
53       BOOST_TEST(nlk.owns_lock(&m) == true);
54       BOOST_TEST(!nlk.owns_lock(&m2) == true);
55     }
56     BOOST_TEST(lk.owns_lock() == true && lk.mutex()==&m);
57   }
58 
59   return boost::report_errors();
60 }
61