/*
* scamper_fds_poll
*
* the money function: this function polls the file descriptors held by
* scamper. for each fd with an event, it calls the callback registered
* with the fd.
*/
int scamper_fds_poll(struct timeval *timeout)
{
scamper_fd_t *fdn;
struct timeval tv;
/*
* if there are fds that can be reaped, then do so.
* if there are fds left over after, use that to guide the select timeout.
*/
if(dlist_count(refcnt_0) > 0)
{
gettimeofday_wrap(&tv);
while((fdn = (scamper_fd_t *)dlist_head_get(refcnt_0)) != NULL)
{
assert(fdn->refcnt == 0);
if(timeval_cmp(&fdn->tv, &tv) > 0)
break;
fd_close(fdn);
fd_free(fdn);
}
if(fdn != NULL)
{
timeval_diff_tv(&tv, &tv, &fdn->tv);
if(timeout == NULL || timeval_cmp(&tv, timeout) < 0)
timeout = &tv;
}
}
return pollfunc(timeout);
}
static void
interactive_mode(void)
{
int libfd=-1, maxdev, ndevs;
fd_set readfds;
ossmix_select_poll_t pollfunc;
struct timeval tmout;
libfd=ossmix_get_fd(&pollfunc);
ossmix_set_callback(event_callback);
printf("libfd=%d, func=%p\n", libfd, pollfunc);
printf("\n");
printf("> ");fflush(stdout);
if (libfd >= 0)
{
tmout.tv_sec = 0;
tmout.tv_usec = 100000; /* 0.1 sec */
}
else
{
tmout.tv_sec = 0;
tmout.tv_usec = 0;
}
while (1)
{
FD_ZERO (&readfds);
maxdev = 0;
FD_SET (0, &readfds); // Stdin
if (libfd > 0)
FD_SET (libfd, &readfds);
if (libfd > maxdev)
maxdev = libfd;
if ((ndevs =
select (maxdev + 1, &readfds, NULL, NULL, &tmout)) == -1)
{
perror ("select");
exit (-1);
}
if (ndevs == 0)
{
ossmix_timertick();
tmout.tv_sec = 0;
tmout.tv_usec = 100000; /* 0.1 sec */
}
if (FD_ISSET (0, &readfds)) /* Stdio */
{
char line[128];
if (fgets(line, sizeof(line)-1, stdin) != NULL)
{
command_parser(line);
printf("> ");fflush(stdout);
}
}
if (libfd > 0)
if (FD_ISSET (libfd, &readfds))
pollfunc();
}
}
