libevent 事件状态改变

发布时间：2020-06-26 20:51:48 阅读：582 作者：嘘123 栏目：编程语言

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#include <stdio.h>

#include "event2/event.h"

#include <unistd.h>

void stdin_callback(evutil_socket_t fd,short what,void *arg)

{

char buf[1024];

struct event* ev = (struct event*)arg;

printf("stdin_callback start\n");

int ret = read(fd,buf,sizeof(buf));

buf[ret] = '\0';

printf("buf %s\n",buf);

printf("stdin_callback end\n");

event_del(ev);

}

int main()

{

struct event_base *base = event_base_new();

struct event *ev0 = event_new(base,STDIN_FILENO,0,NULL.NULL);

event_assign(ev0,base,STDIN_FILENO,EV_READ|EV_PERSIST,stdin_callback,ev0);

event_add(ev0,NULL);

struct event *ev1 = event_new(base,STDIN_FILENO,0,NULL.NULL);

event_assign(ev1,base,STDIN_FILENO,EV_READ|EV_PERSIST,stdin_callback,ev1);

event_add(ev1,NULL);

/*event loop*/

event_base_dispatch(base);

event_base_free(base);

event_free(ev0);

event_free(ev1);

return 0;

}

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