1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // UNSUPPORTED: libcpp-has-no-threads
10 
11 // <condition_variable>
12 
13 // class condition_variable_any;
14 
15 // void notify_all();
16 
17 #include <condition_variable>
18 #include <mutex>
19 #include <thread>
20 #include <cassert>
21 
22 std::condition_variable_any cv;
23 
24 typedef std::timed_mutex L0;
25 typedef std::unique_lock<L0> L1;
26 
27 L0 m0;
28 
29 int test0 = 0;
30 int test1 = 0;
31 int test2 = 0;
32 
33 void f1()
34 {
35     L1 lk(m0);
36     assert(test1 == 0);
37     while (test1 == 0)
38         cv.wait(lk);
39     assert(test1 == 1);
40     test1 = 2;
41 }
42 
43 void f2()
44 {
45     L1 lk(m0);
46     assert(test2 == 0);
47     while (test2 == 0)
48         cv.wait(lk);
49     assert(test2 == 1);
50     test2 = 2;
51 }
52 
53 int main(int, char**)
54 {
55     std::thread t1(f1);
56     std::thread t2(f2);
57     std::this_thread::sleep_for(std::chrono::milliseconds(100));
58     {
59         L1 lk(m0);
60         test1 = 1;
61         test2 = 1;
62     }
63     cv.notify_all();
64     {
65         std::this_thread::sleep_for(std::chrono::milliseconds(100));
66         L1 lk(m0);
67     }
68     t1.join();
69     t2.join();
70     assert(test1 == 2);
71     assert(test2 == 2);
72 
73   return 0;
74 }
75