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 // notify_all_at_thread_exit(...) requires move semantics to transfer the
12 // unique_lock.
13 // UNSUPPORTED: c++03
14 
15 // <condition_variable>
16 
17 // void
18 //   notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
19 
20 #include <condition_variable>
21 #include <mutex>
22 #include <thread>
23 #include <chrono>
24 #include <cassert>
25 
26 #include "test_macros.h"
27 
28 std::condition_variable cv;
29 std::mutex mut;
30 
31 typedef std::chrono::milliseconds ms;
32 typedef std::chrono::high_resolution_clock Clock;
33 
34 void func()
35 {
36     std::unique_lock<std::mutex> lk(mut);
37     std::notify_all_at_thread_exit(cv, std::move(lk));
38     std::this_thread::sleep_for(ms(300));
39 }
40 
41 int main(int, char**)
42 {
43     std::unique_lock<std::mutex> lk(mut);
44     std::thread t(func);
45     Clock::time_point t0 = Clock::now();
46     cv.wait(lk);
47     Clock::time_point t1 = Clock::now();
48     assert(t1-t0 > ms(250));
49     t.join();
50 
51   return 0;
52 }
53