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d1236680 | 1 | // { dg-do run } |
1e42d2f4 | 2 | // { dg-additional-options "-pthread" { target pthread } } |
71c54f8e | 3 | // { dg-require-effective-target c++11 } |
7f426c93 JW |
4 | // { dg-require-gthreads "" } |
5 | // { dg-require-sched-yield "" } | |
aa66b299 | 6 | // { dg-require-sleep "" } |
7f426c93 | 7 | |
a945c346 | 8 | // Copyright (C) 2012-2024 Free Software Foundation, Inc. |
7f426c93 JW |
9 | // |
10 | // This file is part of the GNU ISO C++ Library. This library is free | |
11 | // software; you can redistribute it and/or modify it under the | |
12 | // terms of the GNU General Public License as published by the | |
13 | // Free Software Foundation; either version 3, or (at your option) | |
14 | // any later version. | |
15 | ||
16 | // This library is distributed in the hope that it will be useful, | |
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | // GNU General Public License for more details. | |
20 | ||
21 | // You should have received a copy of the GNU General Public License along | |
22 | // with this library; see the file COPYING3. If not see | |
23 | // <http://www.gnu.org/licenses/>. | |
24 | ||
25 | // PR libstdc++/53830 | |
26 | // Test for deadlock in condition_variable_any::wait_for | |
27 | ||
28 | #include <thread> | |
29 | #include <mutex> | |
30 | #include <condition_variable> | |
31 | #include <chrono> | |
32 | #include <atomic> | |
33 | ||
34 | std::mutex mutex; | |
35 | std::condition_variable_any cv; | |
36 | ||
37 | std::atomic<int> barrier(0); | |
38 | ||
39 | // waits for data from another thread | |
40 | void wait_for_data() | |
41 | { | |
42 | std::unique_lock<std::mutex> lock(mutex); | |
43 | barrier = 1; | |
44 | cv.wait_for(lock, std::chrono::milliseconds(100), []{ return false; }); | |
45 | // read data | |
46 | } | |
47 | ||
48 | // passes data to waiting thread | |
49 | void provide_data() | |
50 | { | |
51 | while (barrier == 0) | |
52 | std::this_thread::yield(); | |
53 | std::unique_lock<std::mutex> lock(mutex); | |
54 | // pass data | |
55 | std::this_thread::sleep_for(std::chrono::seconds(1)); | |
56 | cv.notify_one(); | |
57 | } | |
58 | ||
59 | int main() | |
60 | { | |
61 | std::thread thread1(wait_for_data); | |
62 | provide_data(); | |
63 | thread1.join(); | |
64 | return 0; | |
65 | } | |
66 |