Hello,
I made a small application that block poll function.
the result is :
before pthread_create
after pthread_create
before poll
before shutdown socket
after shutdown socket
before close socket
after close socket
under linux the result is:
before pthread_create
after pthread_create
before poll
before shutdown socket
after shutdown socket
after poll ret=1
error accept failed: Invalid argument
The code of my application are :
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/poll.h>
int SocketFD;
void * my_thread(void* arg)
{
struct sockaddr_in stSockAddr;
int ret;
struct pollfd p;
SocketFD = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(-1 == SocketFD)
{
perror("can not create socket");
exit(EXIT_FAILURE);
}
memset(&stSockAddr, 0, sizeof(stSockAddr));
stSockAddr.sin_family = AF_INET;
stSockAddr.sin_port = htons(1100);
stSockAddr.sin_addr.s_addr = INADDR_ANY;
if(-1 == bind(SocketFD, (struct sockaddr *)&stSockAddr, sizeof(stSockAddr)))
{
perror("error bind failed");
close(SocketFD);
exit(EXIT_FAILURE);
}
if(-1 == listen(SocketFD, 10))
{
perror("error listen failed");
close(SocketFD);
exit(EXIT_FAILURE);
}
for(;;)
{
memset (&p, 0, sizeof (p));
p.fd = SocketFD;
p.events = POLLIN;
p.revents = 0;
printf("before poll\n");
ret = poll (&p, 1, -1);
printf("after poll ret=%d\n", ret);
int ConnectFD = accept(SocketFD, NULL, NULL);
if(0 > ConnectFD)
{
perror("error accept failed");
close(SocketFD);
exit(EXIT_FAILURE);
}
/* perform read write operations ...
read(sockfd,buff,size)*/
shutdown(ConnectFD, SHUT_RDWR);
close(ConnectFD);
}
close(SocketFD);
return 0;
}
int main(void)
{
pthread_t id;
printf("before pthread_create\n");
pthread_create(&id, NULL, my_thread, NULL);
printf("after pthread_create\n");
sleep(3);
printf("before shutdown socket\n");
shutdown(SocketFD,2);
printf("after shutdown socket\n");
sleep(3);
printf("before close socket\n");
close(SocketFD);
printf("after close socket\n");
sleep(30);
}
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