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) 2012 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 // class shared_mutex;
18 
19 // template <class Clock, class Duration>
20 //     bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
21 
22 #include <boost/thread/shared_mutex.hpp>
23 #include <boost/thread/thread.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 #include "../../../timming.hpp"
26 
27 boost::shared_mutex m;
28 
29 typedef boost::chrono::high_resolution_clock Clock;
30 typedef Clock::time_point time_point;
31 typedef Clock::duration duration;
32 typedef boost::chrono::milliseconds ms;
33 typedef boost::chrono::nanoseconds ns;
34 time_point t0;
35 time_point t1;
36 
37 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
38 
f1()39 void f1()
40 {
41   t0 = Clock::now();
42   BOOST_TEST(m.try_lock_until(Clock::now() + ms(750)) == true);
43   t1 = Clock::now();
44   m.unlock();
45 }
46 
f2()47 void f2()
48 {
49   t0 = Clock::now();
50   BOOST_TEST(m.try_lock_until(Clock::now() + ms(250)) == false);
51   t1 = Clock::now();
52   ns d = t1 - t0 - ms(250);
53   BOOST_THREAD_TEST_IT(d, ns(max_diff));
54 }
55 
main()56 int main()
57 {
58   {
59     m.lock();
60     boost::thread t(f1);
61     time_point t2 = Clock::now();
62     boost::this_thread::sleep_for(ms(250));
63     time_point t3 = Clock::now();
64     m.unlock();
65     t.join();
66 
67     ns sleep_time = t3 - t2;
68     ns d_ns = t1 - t0 - sleep_time;
69     ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
70     // BOOST_TEST_GE(d_ms.count(), 0);
71     BOOST_THREAD_TEST_IT(d_ms, max_diff);
72     BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
73   }
74   {
75     m.lock();
76     boost::thread t(f2);
77     boost::this_thread::sleep_for(ms(750));
78     m.unlock();
79     t.join();
80   }
81 
82   return boost::report_errors();
83 }
84 
85