1 /* $NetBSD: signal-test.c,v 1.1.1.3 2021/04/07 02:43:15 christos Exp $ */
2 /*
3 * Compile with:
4 * cc -I/usr/local/include -o signal-test \
5 * signal-test.c -L/usr/local/lib -levent
6 */
7
8 #include <sys/types.h>
9
10 #include <event2/event-config.h>
11
12 #include <sys/stat.h>
13 #ifndef _WIN32
14 #include <sys/queue.h>
15 #include <unistd.h>
16 #include <sys/time.h>
17 #else
18 #include <winsock2.h>
19 #include <windows.h>
20 #endif
21 #include <signal.h>
22 #include <fcntl.h>
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <string.h>
26 #include <errno.h>
27
28 #include <event2/event.h>
29
30 int called = 0;
31
32 static void
signal_cb(evutil_socket_t fd,short event,void * arg)33 signal_cb(evutil_socket_t fd, short event, void *arg)
34 {
35 struct event *signal = arg;
36
37 printf("signal_cb: got signal %d\n", event_get_signal(signal));
38
39 if (called >= 2)
40 event_del(signal);
41
42 called++;
43 }
44
45 int
main(int argc,char ** argv)46 main(int argc, char **argv)
47 {
48 struct event *signal_int = NULL;
49 struct event_base* base;
50 int ret = 0;
51 #ifdef _WIN32
52 WORD wVersionRequested;
53 WSADATA wsaData;
54
55 wVersionRequested = MAKEWORD(2, 2);
56
57 (void) WSAStartup(wVersionRequested, &wsaData);
58 #endif
59
60 /* Initialize the event library */
61 base = event_base_new();
62 if (!base) {
63 ret = 1;
64 goto out;
65 }
66
67 /* Initialize one event */
68 signal_int = evsignal_new(base, SIGINT, signal_cb, event_self_cbarg());
69 if (!signal_int) {
70 ret = 2;
71 goto out;
72 }
73 event_add(signal_int, NULL);
74
75 event_base_dispatch(base);
76
77 out:
78 if (signal_int)
79 event_free(signal_int);
80 if (base)
81 event_base_free(base);
82 return ret;
83 }
84
85