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/recursive_mutex.hpp>
16 
17 // class recursive_timed_mutex;
18 
19 // template <class Rep, class Period>
20 //     bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
21 
22 #include <boost/thread/recursive_mutex.hpp>
23 #include <boost/thread/thread.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 #include "../../../timming.hpp"
26 
27 #if defined BOOST_THREAD_USES_CHRONO
28 
29 boost::recursive_timed_mutex m;
30 
31 typedef boost::chrono::high_resolution_clock Clock;
32 typedef Clock::time_point time_point;
33 typedef Clock::duration duration;
34 typedef boost::chrono::milliseconds ms;
35 typedef boost::chrono::nanoseconds ns;
36 time_point t0;
37 time_point t1;
38 
39 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
40 
f1()41 void f1()
42 {
43   t0 = Clock::now();
44   BOOST_TEST(m.try_lock_for(ms(750)) == true);
45   t1 = Clock::now();
46   BOOST_TEST(m.try_lock());
47   m.unlock();
48   m.unlock();
49 }
50 
f2()51 void f2()
52 {
53   time_point t0 = Clock::now();
54   BOOST_TEST(m.try_lock_for(ms(250)) == false);
55   time_point t1 = Clock::now();
56   ns d = t1 - t0 - ms(250);
57   BOOST_THREAD_TEST_IT(d, ns(max_diff));
58 }
59 
main()60 int main()
61 {
62   {
63     m.lock();
64     boost::thread t(f1);
65     time_point t2 = Clock::now();
66     boost::this_thread::sleep_for(ms(250));
67     time_point t3 = Clock::now();
68     m.unlock();
69     t.join();
70 
71     ns sleep_time = t3 - t2;
72     ns d_ns = t1 - t0 - sleep_time;
73     ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
74     // BOOST_TEST_GE(d_ms.count(), 0);
75     BOOST_THREAD_TEST_IT(d_ms, max_diff);
76     BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
77   }
78   {
79     m.lock();
80     boost::thread t(f2);
81     boost::this_thread::sleep_for(ms(750));
82     m.unlock();
83     t.join();
84   }
85 
86   return boost::report_errors();
87 }
88 
89 #else
90 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
91 #endif
92 
93