void * sel_thread_fun(void * arg){
struct sockaddr_in client_address;
socklen_t client_addrlength = sizeof(client_address);
char addr_p[16];
int i = 0;
printf("sel_thread_fun begin\n");
while(1){
max = get_max_fd();
printf("max=%d\n", max);
int ret = select(max+1, &read_fds, NULL, &exception_fds, NULL);
if (ret < 0){
printf("selection failure \n");
continue;
}
for (i = 0; i < max+1; i++){
memset(buf, 0x00, sizeof(buf) );
if (FD_ISSET(i, &read_fds)){
if (i == listenfd){
int connfd = accept(listenfd, (struct sockaddr*)&client_address, &client_addrlength);
printf("connection from %s \n", inet_ntop(AF_INET, &client_address.sin_addr, addr_p, sizeof(addr_p)));
if ( connfd < 0){
printf("errno is %d\n", errno);
close(listenfd);
}
sel_fd_arr[connfd] = 0;
}
else{
ret = recv(i, buf, sizeof(buf)-1, 0);
if (ret <= 0){
printf("recv ret=%d\n", ret);
sel_fd_arr[i] = -1;
break;
}
printf("get %d bytes of normal data:%s\n", ret, buf);
}
}
else if( FD_ISSET(i, &exception_fds) ){
ret = recv(i, buf, sizeof(buf)-1, MSG_OOB);
if (ret <= 0){
sel_fd_arr[i] = -1;
break;
}
printf("get %d bytes of oob data:%s\n", ret, buf);
}
}
set_sel_events();
}
return (int*)(1) ;
}
void terminate_client (int ci)
{
close (cd[ci]);
isopen[ci] = 0;
FD_CLR (cd[ci], &fdset);
nopen--;
printf ("connection closed (cd[%2d] = %2d), nopen = %2d\n",
ci, cd[ci], nopen);
if (cd[ci] == fdmax) /* has to be reset */
fdmax = get_max_fd (fdmax, isopen, cd, ncons);
}
void terminate_client (int ci)
{
struct pollfd *pfd = &ufds[ci];
close (cd[ci]);
isopen[ci] = 0;
pfd->fd = -1;
pfd->events = 0;
nopen--;
printf ("connection closed (cd[%2d] = %2d), nopen = %2d\n",
ci, cd[ci], nopen);
if (cd[ci] == fdmax) /* has to be reset */
fdmax = get_max_fd (fdmax, isopen, cd, ncons);
}
int sd_listen_fds(int unset_environment) {
int r, fd;
const char *e;
char *p = NULL;
unsigned long l;
e = getenv("LISTEN_PID");
if (!e) {
r = 0;
goto finish;
}
errno = 0;
l = strtoul(e, &p, 10);
if (errno > 0) {
r = -errno;
goto finish;
}
if (!p || p == e || *p || l == 0) {
r = -EINVAL;
goto finish;
}
/* Is this for us? */
if (getpid() != (pid_t) l) {
r = 0;
goto finish;
}
e = getenv("LISTEN_FDS");
if (!e) {
r = 0;
goto finish;
}
errno = 0;
l = strtoul(e, &p, 10);
if (errno > 0) {
r = -errno;
goto finish;
}
if (!p || p == e || *p) {
r = -EINVAL;
goto finish;
}
if (l > get_max_fd() - SD_LISTEN_FDS_START) {
r = -EINVAL;
goto finish;
}
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int) l; fd ++) {
int flags;
flags = fcntl(fd, F_GETFD);
if (flags < 0) {
r = -errno;
goto finish;
}
if (flags & FD_CLOEXEC)
continue;
if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) {
r = -errno;
goto finish;
}
}
r = (int) l;
finish:
if (unset_environment) {
unsetenv("LISTEN_PID");
unsetenv("LISTEN_FDS");
}
return r;
}