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 try_lock_for_called = false;
27 
28 typedef boost::chrono::milliseconds ms;
29 
30 struct shared_mutex
31 {
32   template <class Rep, class Period>
try_lock_upgrade_forshared_mutex33   bool try_lock_upgrade_for(const boost::chrono::duration<Rep, Period>& rel_time)
34   {
35     BOOST_TEST(rel_time == ms(5));
36     try_lock_for_called = !try_lock_for_called;
37     return try_lock_for_called;
38   }
unlock_upgradeshared_mutex39   void unlock_upgrade()
40   {
41   }
42 };
43 
44 shared_mutex m;
45 
main()46 int main()
47 {
48   boost::upgrade_lock<shared_mutex> lk(m, boost::defer_lock);
49   BOOST_TEST(lk.try_lock_for(ms(5)) == true);
50   BOOST_TEST(try_lock_for_called == true);
51   BOOST_TEST(lk.owns_lock() == true);
52   try
53   {
54     lk.try_lock_for(ms(5));
55     BOOST_TEST(false);
56   }
57   catch (boost::system::system_error& e)
58   {
59     BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur);
60   }
61   lk.unlock();
62   BOOST_TEST(lk.try_lock_for(ms(5)) == false);
63   BOOST_TEST(try_lock_for_called == false);
64   BOOST_TEST(lk.owns_lock() == false);
65   lk.release();
66   try
67   {
68     lk.try_lock_for(ms(5));
69     BOOST_TEST(false);
70   }
71   catch (boost::system::system_error& e)
72   {
73     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
74   }
75 
76   return boost::report_errors();
77 }
78 
79