contrib/ntp/sntp/libevent/sample/signal-test.c

   1 /*
   2  * Compile with:
   3  * cc -I/usr/local/include -o signal-test \
   4  *   signal-test.c -L/usr/local/lib -levent
   5  */
   6
   7 #include <sys/types.h>
   8
   9 #include <event2/event-config.h>
  10
  11 #include <sys/stat.h>
  12 #ifndef _WIN32
  13 #include <sys/queue.h>
  14 #include <unistd.h>
  15 #include <sys/time.h>
  16 #else
  17 #include <winsock2.h>
  18 #include <windows.h>
  19 #endif
  20 #include <signal.h>
  21 #include <fcntl.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <errno.h>
  26
  27 #include <event2/event.h>
  28
  29 #ifdef EVENT____func__
  30 #define __func__ EVENT____func__
  31 #endif
  32
  33 int called = 0;
  34
  35 static void
  36 signal_cb(evutil_socket_t fd, short event, void *arg)
  37 {
  38         struct event *signal = arg;
  39
  40         printf("%s: got signal %d\n", __func__, event_get_signal(signal));
  41
  42         if (called >= 2)
  43                 event_del(signal);
  44
  45         called++;
  46 }
  47
  48 int
  49 main(int argc, char **argv)
  50 {
  51         struct event *signal_int;
  52         struct event_base* base;
  53 #ifdef _WIN32
  54         WORD wVersionRequested;
  55         WSADATA wsaData;
  56
  57         wVersionRequested = MAKEWORD(2, 2);
  58
  59         (void) WSAStartup(wVersionRequested, &wsaData);
  60 #endif
  61
  62         /* Initalize the event library */
  63         base = event_base_new();
  64
  65         /* Initalize one event */
  66         signal_int = evsignal_new(base, SIGINT, signal_cb, event_self_cbarg());
  67
  68         event_add(signal_int, NULL);
  69
  70         event_base_dispatch(base);
  71         event_base_free(base);
  72
  73         return (0);
  74 }
  75