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 unique_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/mutex.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 
26 #if defined BOOST_THREAD_USES_CHRONO
27 
28 
29 bool try_lock_for_called = false;
30 
31 typedef boost::chrono::milliseconds ms;
32 
33 struct mutex
34 {
35   template <class Rep, class Period>
try_lock_formutex36   bool try_lock_for(const boost::chrono::duration<Rep, Period>& rel_time)
37   {
38     BOOST_TEST(rel_time == ms(5));
39     try_lock_for_called = !try_lock_for_called;
40     return try_lock_for_called;
41   }
unlockmutex42   void unlock()
43   {
44   }
45 };
46 
47 mutex m;
48 
main()49 int main()
50 {
51   boost::unique_lock<mutex> lk(m, boost::defer_lock);
52   BOOST_TEST(lk.try_lock_for(ms(5)) == true);
53   BOOST_TEST(try_lock_for_called == true);
54   BOOST_TEST(lk.owns_lock() == true);
55   try
56   {
57     lk.try_lock_for(ms(5));
58     BOOST_TEST(false);
59   }
60   catch (boost::system::system_error& e)
61   {
62     BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur);
63   }
64   lk.unlock();
65   BOOST_TEST(lk.try_lock_for(ms(5)) == false);
66   BOOST_TEST(try_lock_for_called == false);
67   BOOST_TEST(lk.owns_lock() == false);
68   lk.release();
69   try
70   {
71     lk.try_lock_for(ms(5));
72     BOOST_TEST(false);
73   }
74   catch (boost::system::system_error& e)
75   {
76     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
77   }
78 
79   return boost::report_errors();
80 }
81 
82 #else
83 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
84 #endif
85 
86