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 upgrade_lock;
18 
19 // template <class Rep, class Period>
20 //   bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
21 
22 #include <boost/thread/lock_types.hpp>
23 //#include <boost/thread/shared_mutex.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 
26 bool unlock_called = false;
27 
28 struct shared_mutex
29 {
lock_upgradeshared_mutex30   void lock_upgrade()
31   {
32   }
unlock_upgradeshared_mutex33   void unlock_upgrade()
34   {
35     unlock_called = true;
36   }
37 };
38 
39 shared_mutex m;
40 
main()41 int main()
42 {
43   boost::upgrade_lock<shared_mutex> lk(m);
44   lk.unlock();
45   BOOST_TEST(unlock_called == true);
46   BOOST_TEST(lk.owns_lock() == false);
47   try
48   {
49     lk.unlock();
50     BOOST_TEST(false);
51   }
52   catch (boost::system::system_error& e)
53   {
54     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
55   }
56   lk.release();
57   try
58   {
59     lk.unlock();
60     BOOST_TEST(false);
61   }
62   catch (boost::system::system_error& e)
63   {
64     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
65   }
66 
67   return boost::report_errors();
68 }
69 
70