time-test.c

/*
 * Compile with:
 * cc -I/usr/local/include -o time-test time-test.c -L/usr/local/lib -levent
 */

#include <sys/types.h>

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/stat.h>
#ifndef WIN32
#include <sys/queue.h>
#include <unistd.h>
#endif
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include <event.h>
#include <evutil.h>

int lasttime;

static void
timeout_cb(int fd, short event, void *arg)
{
        struct timeval tv;
        struct event *timeout = arg;
        int newtime = time(NULL);

        printf("%s: called at %d: %d\n", __func__, newtime,
            newtime - lasttime);
        lasttime = newtime;

        evutil_timerclear(&tv);
        tv.tv_sec = 2;
        event_add(timeout, &tv);
}

int
main (int argc, char **argv)
{
        struct event timeout;
        struct timeval tv;
 
        /* Initalize the event library */
        event_init();

        /* Initalize one event */
        evtimer_set(&timeout, timeout_cb, &timeout);

        evutil_timerclear(&tv);
        tv.tv_sec = 2;
        event_add(&timeout, &tv);

        lasttime = time(NULL);
        
        event_dispatch();

        return (0);
}