1 /**
2  * A simple example of a repeating timer that prints out a message for
3  * each timer expiration.
4  */
5 
6 #include <chrono>
7 #include <cstdio>
8 #include <sdeventplus/clock.hpp>
9 #include <sdeventplus/event.hpp>
10 #include <sdeventplus/utility/timer.hpp>
11 #include <string>
12 
13 using sdeventplus::Clock;
14 using sdeventplus::ClockId;
15 using sdeventplus::Event;
16 
17 constexpr auto clockId = ClockId::RealTime;
18 using Timer = sdeventplus::utility::Timer<clockId>;
19 
20 int main(int argc, char* argv[])
21 {
22     if (argc != 2)
23     {
24         fprintf(stderr, "Usage: %s [seconds]\n", argv[0]);
25         return 1;
26     }
27 
28     unsigned interval = std::stoul(argv[1]);
29     fprintf(stderr, "Beating every %u seconds\n", interval);
30 
31     auto event = Event::get_default();
32     Timer timer(event, [](Timer&) { printf("Beat\n"); },
33                 std::chrono::seconds{interval});
34     return event.loop();
35 }
36