libevent的timer定时器的用法

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>
#include <event2/event.h>
#include <event2/event_struct.h>

struct self_tv{
struct event* timeout;
struct timeval tv;
int order;
};
void sigroute(int fd, short event, void* arg) {
struct self_tv* st = (struct self_tv*)arg;
printf(“%d wake up\n”, st->order);
st->tv.tv_sec = st->tv.tv_sec + 1;
evtimer_add(st->timeout, &(st->tv));
}

int main()
{
struct event_base* eb;
struct self_tv* st;
int i=1;
eb = event_base_new();
for(i=0;i<=1000;i++) {
st = (struct self_tv*)malloc(sizeof(struct self_tv));
st->tv.tv_sec = 5;
st->tv.tv_usec = 0;
st->order = i;
st->timeout = evtimer_new(eb, sigroute, st);
evtimer_add(st->timeout, &st->tv);
}
event_base_dispatch(eb);
return 0;
}

 

libevent的timer定时器在没有指定EV_PERSIST时是一次性事件。。。在回调里都需要再次evtimer_add一次。