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 // Copyright (C) 2011 Vicente J. Botet Escriba
10 //
11 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
12 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
13 
14 // <boost/thread/condition_variable>
15 
16 // class condition_variable;
17 
18 // condition_variable(const condition_variable&) = delete;
19 
20 #include <boost/thread/condition_variable.hpp>
21 #include <boost/thread/mutex.hpp>
22 #include <boost/thread/thread.hpp>
23 #include <boost/detail/lightweight_test.hpp>
24 #include <cassert>
25 #include <iostream>
26 #include "../../../timming.hpp"
27 
28 #if defined BOOST_THREAD_USES_CHRONO
29 
30 class Pred
31 {
32   int& i_;
33 public:
Pred(int & i)34   explicit Pred(int& i) :
35     i_(i)
36   {
37   }
38 
operator ()()39   bool operator()()
40   {
41     return i_ != 0;
42   }
43 };
44 
45 boost::condition_variable cv;
46 boost::mutex mut;
47 
48 int test1 = 0;
49 int test2 = 0;
50 
51 int runs = 0;
52 
53 typedef boost::chrono::system_clock Clock;
54 typedef boost::chrono::milliseconds milliseconds;
55 typedef boost::chrono::milliseconds ms;
56 typedef boost::chrono::nanoseconds ns;
57 
58 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
59 
f()60 void f()
61 {
62   try {
63     boost::unique_lock < boost::mutex > lk(mut);
64     assert(test2 == 0);
65     test1 = 1;
66     cv.notify_one();
67     Clock::time_point t0 = Clock::now();
68     cv.wait_for(lk, milliseconds(250), Pred(test2));
69     Clock::time_point t1 = Clock::now();
70     if (runs == 0)
71     {
72       assert(t1 - t0 < max_diff);
73       assert(test2 != 0);
74     }
75     else
76     {
77       assert(t1 - t0 - milliseconds(250) < max_diff);
78       assert(test2 == 0);
79     }
80     ++runs;
81   } catch(...) {
82     std::cout << "ERROR exception" << __LINE__ << std::endl;
83     assert(false);
84   }
85 }
86 
main()87 int main()
88 {
89   try
90   {
91     boost::unique_lock < boost::mutex > lk(mut);
92     boost::thread t(f);
93     BOOST_TEST(test1 == 0);
94     while (test1 == 0)
95       cv.wait(lk);
96     BOOST_TEST(test1 != 0);
97     test2 = 1;
98     lk.unlock();
99     cv.notify_one();
100     t.join();
101   } catch(...) {
102     BOOST_TEST(false);
103     std::cout << "ERROR exception" << __LINE__ << std::endl;
104   }
105   test1 = 0;
106   test2 = 0;
107   try
108   {
109     boost::unique_lock < boost::mutex > lk(mut);
110     boost::thread t(f);
111     BOOST_TEST(test1 == 0);
112     while (test1 == 0)
113       cv.wait(lk);
114     BOOST_TEST(test1 != 0);
115     lk.unlock();
116     t.join();
117   } catch(...) {
118     BOOST_TEST(false);
119     std::cout << "ERROR exception" << __LINE__ << std::endl;
120   }
121 
122   return boost::report_errors();
123 }
124 
125 #else
126 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
127 #endif
128