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 
10 // <condition_variable>
11 
12 // void
13 //   notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
14 
15 #include <condition_variable>
16 #include <mutex>
17 #include <thread>
18 #include <chrono>
19 #include <cassert>
20 
21 std::condition_variable cv;
22 std::mutex mut;
23 
24 typedef std::chrono::milliseconds ms;
25 typedef std::chrono::high_resolution_clock Clock;
26 
func()27 void func()
28 {
29     std::unique_lock<std::mutex> lk(mut);
30     std::notify_all_at_thread_exit(cv, std::move(lk));
31     std::this_thread::sleep_for(ms(300));
32 }
33 
main()34 int main()
35 {
36     std::unique_lock<std::mutex> lk(mut);
37     std::thread(func).detach();
38     Clock::time_point t0 = Clock::now();
39     cv.wait(lk);
40     Clock::time_point t1 = Clock::now();
41     assert(t1-t0 > ms(250));
42 }
43