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/shared_mutex.hpp>
16 
17 // template <class Mutex> class shared_lock;
18 
19 // shared_lock(shared_lock const&) = delete;
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 m0;
27 boost::shared_mutex m1;
28 
main()29 int main()
30 {
31   {
32     boost::shared_lock<boost::shared_mutex> lk0(m0);
33     boost::shared_lock<boost::shared_mutex> lk1(m1);
34     lk1 = boost::move(lk0);
35     BOOST_TEST(lk1.mutex() == &m0);
36     BOOST_TEST(lk1.owns_lock() == true);
37     BOOST_TEST(lk0.mutex() == 0);
38     BOOST_TEST(lk0.owns_lock() == false);
39   }
40   {
41 
42     boost::shared_lock<boost::shared_mutex> lk1;
43     lk1 = BOOST_THREAD_MAKE_RV_REF(boost::shared_lock<boost::shared_mutex>(m0));
44     BOOST_TEST(lk1.mutex() == &m0);
45     BOOST_TEST(lk1.owns_lock() == true);
46   }
47   {
48     boost::unique_lock<boost::shared_mutex> lk0(m0);
49     boost::shared_lock<boost::shared_mutex> lk1(m1);
50     lk1 = BOOST_THREAD_MAKE_RV_REF(boost::shared_lock<boost::shared_mutex>(boost::move(lk0)));
51     BOOST_TEST(lk1.mutex() == &m0);
52     BOOST_TEST(lk1.owns_lock() == true);
53     BOOST_TEST(lk0.mutex() == 0);
54     BOOST_TEST(lk0.owns_lock() == false);
55   }
56   {
57 
58     boost::shared_lock<boost::shared_mutex> lk1;
59     lk1 = BOOST_THREAD_MAKE_RV_REF(boost::shared_lock<boost::shared_mutex>(boost::unique_lock<boost::shared_mutex>(m0)));
60     BOOST_TEST(lk1.mutex() == &m0);
61     BOOST_TEST(lk1.owns_lock() == true);
62   }
63   {
64     boost::upgrade_lock<boost::shared_mutex> lk0(m0);
65     boost::shared_lock<boost::shared_mutex> lk1(m1);
66     lk1 = BOOST_THREAD_MAKE_RV_REF(boost::shared_lock<boost::shared_mutex>(boost::move(lk0)));
67     BOOST_TEST(lk1.mutex() == &m0);
68     BOOST_TEST(lk1.owns_lock() == true);
69     BOOST_TEST(lk0.mutex() == 0);
70     BOOST_TEST(lk0.owns_lock() == false);
71   }
72   {
73 
74     boost::shared_lock<boost::shared_mutex> lk1;
75     lk1 = BOOST_THREAD_MAKE_RV_REF(boost::shared_lock<boost::shared_mutex>(boost::upgrade_lock<boost::shared_mutex>(m0)));
76     BOOST_TEST(lk1.mutex() == &m0);
77     BOOST_TEST(lk1.owns_lock() == true);
78   }
79   return boost::report_errors();
80 
81 }
82 
83