third_party/libevent/sample/time-test.c

   1 /*
   2  * Compile with:
   3  * cc -I/usr/local/include -o time-test time-test.c -L/usr/local/lib -levent
   4  */
   5
   6 #include <sys/types.h>
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include <sys/stat.h>
  13 #ifndef WIN32
  14 #include <sys/queue.h>
  15 #include <unistd.h>
  16 #endif
  17 #include <time.h>
  18 #ifdef HAVE_SYS_TIME_H
  19 #include <sys/time.h>
  20 #endif
  21 #include <fcntl.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <errno.h>
  26
  27 #include <event.h>
  28 #include <evutil.h>
  29
  30 int lasttime;
  31
  32 static void
  33 timeout_cb(int fd, short event, void *arg)
  34 {
  35         struct timeval tv;
  36         struct event *timeout = arg;
  37         int newtime = time(NULL);
  38
  39         printf("%s: called at %d: %d\n", __func__, newtime,
  40             newtime - lasttime);
  41         lasttime = newtime;
  42
  43         evutil_timerclear(&tv);
  44         tv.tv_sec = 2;
  45         event_add(timeout, &tv);
  46 }
  47
  48 int
  49 main (int argc, char **argv)
  50 {
  51         struct event timeout;
  52         struct timeval tv;
  53
  54         /* Initalize the event library */
  55         event_init();
  56
  57         /* Initalize one event */
  58         evtimer_set(&timeout, timeout_cb, &timeout);
  59
  60         evutil_timerclear(&tv);
  61         tv.tv_sec = 2;
  62         event_add(&timeout, &tv);
  63
  64         lasttime = time(NULL);
  65
  66         event_dispatch();
  67
  68         return (0);
  69 }
  70