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 <functional>
9 #include <sdeventplus/clock.hpp>
10 #include <sdeventplus/event.hpp>
11 #include <sdeventplus/source/signal.hpp>
12 #include <sdeventplus/utility/timer.hpp>
13 #include <stdplus/signal.hpp>
14 #include <string>
15 
16 using sdeventplus::Clock;
17 using sdeventplus::ClockId;
18 using sdeventplus::Event;
19 using sdeventplus::source::Signal;
20 
21 constexpr auto clockId = ClockId::RealTime;
22 using Timer = sdeventplus::utility::Timer<clockId>;
23 
24 void intCb(Signal& signal, const struct signalfd_siginfo*)
25 {
26     printf("Exiting\n");
27     signal.get_event().exit(0);
28 }
29 
30 int main(int argc, char* argv[])
31 {
32     if (argc != 2)
33     {
34         fprintf(stderr, "Usage: %s [seconds]\n", argv[0]);
35         return 1;
36     }
37 
38     unsigned interval = std::stoul(argv[1]);
39     fprintf(stderr, "Beating every %u seconds\n", interval);
40 
41     auto event = Event::get_default();
42     Timer timer(
43         event, [](Timer&) { printf("Beat\n"); },
44         std::chrono::seconds{interval});
45     stdplus::signal::block(SIGINT);
46     Signal signal(event, SIGINT, intCb);
47     return event.loop();
48 }
49