libevent 定時器的使用

 

#include <stdio.h>
#include <stdlib.h>
#include <event2/bufferevent.h>
#include <event2/buffer.h>
#include <event2/listener.h>
#include <event2/util.h>
#include <event2/event.h>
#include <event2/event_struct.h>
#include <signal.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

void time_callback(evutil_socket_t fd, short event, void*arg)
{
    printf("*****hello **********\n");
    return;
}

int main(int argc,char *argv[])
{
    struct event_base *base;
    struct event *tevent;
    struct event eve;
    int i = 0;

    //設置超時時間爲3秒
    struct timeval ti={3,0};

    //開啓debug logging 用於信息調試
    event_enable_debug_logging(EVENT_DBG_ALL);
    
    base = event_base_new();
    if(NULL == base)
    {
        printf("new base is error\n");
        return -1;
    }

    tevent = event_new(base,-1,EV_TIMEOUT|EV_PERSIST,time_callback,NULL);
    if(NULL == tevent)
    {
        event_base_free(base);
        printf("create time event is error\n");
        return -1;
    }
    
    event_add(tevent,&ti);
    event_base_dispatch(base);

    event_free(tevent);
    event_base_free(base);

    return 0;
}