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 // ~condition_variable_any();
16 
17 #include <condition_variable>
18 #include <mutex>
19 #include <thread>
20 #include <cassert>
21 
22 std::condition_variable_any* cv;
23 std::mutex m;
24 
25 bool f_ready = false;
26 bool g_ready = false;
27 
28 void f()
29 {
30     m.lock();
31     f_ready = true;
32     cv->notify_one();
33     delete cv;
34     m.unlock();
35 }
36 
37 void g()
38 {
39     m.lock();
40     g_ready = true;
41     cv->notify_one();
42     while (!f_ready)
43         cv->wait(m);
44     m.unlock();
45 }
46 
47 int main(int, char**)
48 {
49     cv = new std::condition_variable_any;
50     std::thread th2(g);
51     m.lock();
52     while (!g_ready)
53         cv->wait(m);
54     m.unlock();
55     std::thread th1(f);
56     th1.join();
57     th2.join();
58 
59   return 0;
60 }
61