1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 // class shared_timed_mutex;
14 // void lock_shared();
16 #include <shared_mutex>
22 #if _LIBCPP_STD_VER > 11
24 std::shared_timed_mutex m;
26 typedef std::chrono::system_clock Clock;
27 typedef Clock::time_point time_point;
28 typedef Clock::duration duration;
29 typedef std::chrono::milliseconds ms;
30 typedef std::chrono::nanoseconds ns;
34 time_point t0 = Clock::now();
36 time_point t1 = Clock::now();
38 ns d = t1 - t0 - ms(250);
39 assert(d < ms(50)); // within 50ms
44 time_point t0 = Clock::now();
46 time_point t1 = Clock::now();
49 assert(d < ms(50)); // within 50ms
52 #endif // _LIBCPP_STD_VER > 11
56 #if _LIBCPP_STD_VER > 11
58 std::vector<std::thread> v;
59 for (int i = 0; i < 5; ++i)
60 v.push_back(std::thread(f));
61 std::this_thread::sleep_for(ms(250));
69 std::this_thread::sleep_for(ms(250));
74 #endif // _LIBCPP_STD_VER > 11