2 * XXX This sample code was once meant to show how to use the basic Libevent
3 * interfaces, but it never worked on non-Unix platforms, and some of the
4 * interfaces have changed since it was first written. It should probably
5 * be removed or replaced with something better.
8 * cc -I/usr/local/include -o time-test time-test.c -L/usr/local/lib -levent
11 #include <sys/types.h>
13 #include <event2/event-config.h>
17 #include <sys/queue.h>
21 #ifdef EVENT__HAVE_SYS_TIME_H
30 #include <event2/event.h>
31 #include <event2/event_struct.h>
32 #include <event2/util.h>
38 struct timeval lasttime;
40 int event_is_persistent;
43 timeout_cb(evutil_socket_t fd, short event, void *arg)
45 struct timeval newtime, difference;
46 struct event *timeout = arg;
49 evutil_gettimeofday(&newtime, NULL);
50 evutil_timersub(&newtime, &lasttime, &difference);
51 elapsed = difference.tv_sec +
52 (difference.tv_usec / 1.0e6);
54 printf("timeout_cb called at %d: %.3f seconds elapsed.\n",
55 (int)newtime.tv_sec, elapsed);
58 if (! event_is_persistent) {
60 evutil_timerclear(&tv);
62 event_add(timeout, &tv);
67 main(int argc, char **argv)
71 struct event_base *base;
75 WORD wVersionRequested;
78 wVersionRequested = MAKEWORD(2, 2);
80 (void)WSAStartup(wVersionRequested, &wsaData);
83 if (argc == 2 && !strcmp(argv[1], "-p")) {
84 event_is_persistent = 1;
87 event_is_persistent = 0;
91 /* Initalize the event library */
92 base = event_base_new();
94 /* Initalize one event */
95 event_assign(&timeout, base, -1, flags, timeout_cb, (void*) &timeout);
97 evutil_timerclear(&tv);
99 event_add(&timeout, &tv);
101 evutil_gettimeofday(&lasttime, NULL);
103 event_base_dispatch(base);