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 // <mutex>
10 
11 // template <class Clock, class Duration>
12 // unique_lock::unique_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
13 
14 #include <cassert>
15 #include <chrono>
16 #include <mutex>
17 
18 #include "checking_mutex.h"
19 
20 int main(int, char**) {
21   checking_mutex mux;
22 
23   { // check successful lock
24     mux.reject = false;
25     std::unique_lock<checking_mutex> lock(mux, std::chrono::time_point<std::chrono::system_clock>());
26     assert(mux.current_state == checking_mutex::locked_via_try_lock_until);
27     assert(lock.owns_lock());
28   }
29   assert(mux.current_state == checking_mutex::unlocked);
30 
31   { // check unsuccessful lock
32     mux.reject = true;
33     std::unique_lock<checking_mutex> lock(mux, std::chrono::time_point<std::chrono::system_clock>());
34     assert(mux.current_state == checking_mutex::unlocked);
35     assert(mux.last_try == checking_mutex::locked_via_try_lock_until);
36     assert(!lock.owns_lock());
37   }
38   assert(mux.current_state == checking_mutex::unlocked);
39 
40   return 0;
41 }
42