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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> | |
b32b8144 FG |
24 | #include <cassert> |
25 | #include <iostream> | |
7c673cae FG |
26 | |
27 | #if defined BOOST_THREAD_USES_CHRONO | |
28 | ||
29 | class Pred | |
30 | { | |
31 | int& i_; | |
32 | public: | |
33 | explicit Pred(int& i) : | |
34 | i_(i) | |
35 | { | |
36 | } | |
37 | ||
38 | bool operator()() | |
39 | { | |
40 | return i_ != 0; | |
41 | } | |
42 | }; | |
43 | ||
44 | boost::condition_variable cv; | |
45 | boost::mutex mut; | |
46 | ||
47 | int test1 = 0; | |
48 | int test2 = 0; | |
49 | ||
50 | int runs = 0; | |
51 | ||
52 | void f() | |
53 | { | |
b32b8144 FG |
54 | try { |
55 | typedef boost::chrono::system_clock Clock; | |
56 | typedef boost::chrono::milliseconds milliseconds; | |
57 | boost::unique_lock < boost::mutex > lk(mut); | |
58 | assert(test2 == 0); | |
59 | test1 = 1; | |
60 | cv.notify_one(); | |
61 | Clock::time_point t0 = Clock::now(); | |
62 | int count=0; | |
63 | //bool r = | |
64 | (void)cv.wait_for(lk, milliseconds(250), Pred(test2)); | |
65 | count++; | |
66 | Clock::time_point t1 = Clock::now(); | |
67 | if (runs == 0) | |
68 | { | |
69 | // This test is spurious as it depends on the time the thread system switches the threads | |
70 | assert(t1 - t0 < milliseconds(250+1000)); | |
71 | assert(test2 != 0); | |
72 | } | |
73 | else | |
74 | { | |
75 | assert(t1 - t0 - milliseconds(250) < milliseconds(count*250+2)); | |
76 | assert(test2 == 0); | |
77 | } | |
78 | ++runs; | |
79 | } catch(...) { | |
80 | std::cout << "ERROR exception" << __LINE__ << std::endl; | |
81 | assert(false); | |
7c673cae | 82 | } |
7c673cae FG |
83 | } |
84 | ||
85 | int main() | |
86 | { | |
b32b8144 | 87 | try |
7c673cae FG |
88 | { |
89 | boost::unique_lock < boost::mutex > lk(mut); | |
90 | boost::thread t(f); | |
91 | BOOST_TEST(test1 == 0); | |
92 | while (test1 == 0) | |
93 | cv.wait(lk); | |
94 | BOOST_TEST(test1 != 0); | |
95 | test2 = 1; | |
96 | lk.unlock(); | |
97 | cv.notify_one(); | |
98 | t.join(); | |
b32b8144 FG |
99 | } catch(...) { |
100 | BOOST_TEST(false); | |
101 | std::cout << "ERROR exception" << __LINE__ << std::endl; | |
7c673cae FG |
102 | } |
103 | test1 = 0; | |
104 | test2 = 0; | |
b32b8144 | 105 | try |
7c673cae FG |
106 | { |
107 | boost::unique_lock < boost::mutex > lk(mut); | |
108 | boost::thread t(f); | |
109 | BOOST_TEST(test1 == 0); | |
110 | while (test1 == 0) | |
111 | cv.wait(lk); | |
112 | BOOST_TEST(test1 != 0); | |
113 | lk.unlock(); | |
114 | t.join(); | |
b32b8144 FG |
115 | } catch(...) { |
116 | BOOST_TEST(false); | |
117 | std::cout << "ERROR exception" << __LINE__ << std::endl; | |
7c673cae FG |
118 | } |
119 | ||
120 | return boost::report_errors(); | |
121 | } | |
122 | ||
123 | #else | |
124 | #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported" | |
125 | #endif |