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 // Copyright (C) 2011 Vicente J. Botet Escriba
11 //
12 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
13 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
14 
15 // <boost/thread/locks.hpp>
16 
17 // template <class Mutex> class shared_lock;
18 
19 // shared_lock& operator=(shared_lock&& u);
20 
21 
22 #include <boost/thread/lock_types.hpp>
23 #include <boost/thread/shared_mutex.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 
26 boost::shared_mutex m;
27 
main()28 int main()
29 {
30 
31   {
32   boost::upgrade_lock<boost::shared_mutex> lk0(m);
33   boost::shared_lock<boost::shared_mutex> lk( (boost::move(lk0)));
34   BOOST_TEST(lk.mutex() == &m);
35   BOOST_TEST(lk.owns_lock() == true);
36   BOOST_TEST(lk0.mutex() == 0);
37   BOOST_TEST(lk0.owns_lock() == false);
38   }
39   {
40   boost::shared_lock<boost::shared_mutex> lk( (boost::upgrade_lock<boost::shared_mutex>(m)));
41   BOOST_TEST(lk.mutex() == &m);
42   BOOST_TEST(lk.owns_lock() == true);
43   }
44   {
45   boost::upgrade_lock<boost::shared_mutex> lk0(m, boost::defer_lock);
46   boost::shared_lock<boost::shared_mutex> lk( (boost::move(lk0)));
47   BOOST_TEST(lk.mutex() == &m);
48   BOOST_TEST(lk.owns_lock() == false);
49   BOOST_TEST(lk0.mutex() == 0);
50   BOOST_TEST(lk0.owns_lock() == false);
51   }
52   {
53   boost::upgrade_lock<boost::shared_mutex> lk0(m, boost::defer_lock);
54   lk0.release();
55   boost::shared_lock<boost::shared_mutex> lk( (boost::move(lk0)));
56   BOOST_TEST(lk.mutex() == 0);
57   BOOST_TEST(lk.owns_lock() == false);
58   BOOST_TEST(lk0.mutex() == 0);
59   BOOST_TEST(lk0.owns_lock() == false);
60   }
61 
62   return boost::report_errors();
63 }
64 
65