libev have some bug? #3
Description
i have write a code:
#include <stdio.h>
#include <unistd.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
ev_io stdin_watcher;
ev_timer timeout_watcher;
static void timeout_cb (EV_P_ ev_timer *w, int revents) ;
static void udp_cb (EV_P_ ev_io *w, int revents)
{
char buf[101] = {0};
read(w->fd,buf,100);
printf("read data---->%s\n",buf);
ev_io_stop (EV_A_ w);
ev_break (EV_A_ EVBREAK_ALL);
}
static int flag = 0;
struct ev_loop *loop;
static void timeout_cb (EV_P_ ev_timer *w, int revents)
{
if(flag == 0){
sleep(30);
flag = 1;
}
ev_timer_stop (loop, w);
ev_timer_set (w, 1, 0.0);
ev_timer_start (loop, w);
printf("2-----ev_now=%d,ev_time=%d\n",ev_now(EV_A),ev_time());
printf("end\n");
}
int main (void)
{
loop = EV_DEFAULT;
int sock = socket(AF_INET,SOCK_DGRAM,0);
if(sock<0){
perror("socket");
exit(1);
}
struct sockaddr_in local;
local.sin_family = AF_INET;
local.sin_port = htons(7777);
local.sin_addr.s_addr = inet_addr("0.0.0.0");
if(bind(sock,(struct sockaddr*)&local,sizeof(local))<0){
perror("bind");
exit(0);
}
ev_io_init (&stdin_watcher, udp_cb,sock, EV_READ);
ev_io_start (loop, &stdin_watcher);
ev_timer_init (&timeout_watcher, timeout_cb, 1,0.0);
ev_timer_start(loop, &timeout_watcher);
ev_run (loop, 0);
return 0;
}
compile : gcc -o test 1.c -lev
test it and the result is : before the timeout happy and udp sock recived data in this period. this timeout_cb always trigger twice and quit. i cannot decide this is bug? Why it triggers twice instead of once？