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 Rep, class Period>
12 // unique_lock::unique_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_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   { // check successful lock
23     mux.reject = false;
24     std::unique_lock<checking_mutex> lock(mux, std::chrono::seconds());
25     assert(mux.current_state == checking_mutex::locked_via_try_lock_for);
26     assert(lock.owns_lock());
27   }
28   assert(mux.current_state == checking_mutex::unlocked);
29 
30   { // check unsuccessful lock
31     mux.reject = true;
32     std::unique_lock<checking_mutex> lock(mux, std::chrono::seconds());
33     assert(mux.current_state == checking_mutex::unlocked);
34     assert(mux.last_try == checking_mutex::locked_via_try_lock_for);
35     assert(!lock.owns_lock());
36   }
37   assert(mux.current_state == checking_mutex::unlocked);
38 
39   return 0;
40 }
41