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 // template <class Lock>
16 //   void wait(Lock& lock);
17 
18 #include <condition_variable>
19 #include <mutex>
20 #include <thread>
21 #include <cassert>
22 
23 #include "test_macros.h"
24 
25 std::condition_variable_any cv;
26 
27 typedef std::timed_mutex L0;
28 typedef std::unique_lock<L0> L1;
29 
30 L0 m0;
31 
32 int test1 = 0;
33 int test2 = 0;
34 
35 void f()
36 {
37     L1 lk(m0);
38     assert(test2 == 0);
39     test1 = 1;
40     cv.notify_one();
41     while (test2 == 0)
42         cv.wait(lk);
43     assert(test2 != 0);
44 }
45 
46 int main(int, char**)
47 {
48     L1 lk(m0);
49     std::thread t(f);
50     assert(test1 == 0);
51     while (test1 == 0)
52         cv.wait(lk);
53     assert(test1 != 0);
54     test2 = 1;
55     lk.unlock();
56     cv.notify_one();
57     t.join();
58 
59   return 0;
60 }
61