static inline int poll_teardown(FAR struct pollfd *fds, nfds_t nfds, int *count)
{
int status;
int ret = OK;
int i;
/* Process each descriptor in the list */
*count = 0;
for (i = 0; i < nfds; i++)
{
/* Teardown the poll */
status = poll_fdsetup(fds[i].fd, &fds[i], false);
if (status < 0)
{
ret = status;
}
/* Check if any events were posted */
if (fds[i].revents != 0)
{
(*count)++;
}
/* Un-initialize the poll structure */
fds[i].sem = NULL;
}
return ret;
}
static inline int poll_setup(FAR struct pollfd *fds, nfds_t nfds, sem_t *sem)
{
int ret;
int i;
/* Process each descriptor in the list */
for (i = 0; i < nfds; i++)
{
/* Setup the poll descriptor */
fds[i].sem = sem;
fds[i].revents = 0;
fds[i].priv = NULL;
/* Set up the poll */
ret = poll_fdsetup(fds[i].fd, &fds[i], true);
if (ret < 0)
{
return ret;
}
}
return OK;
}
static inline int poll_setup(FAR struct pollfd *fds, nfds_t nfds, sem_t *sem)
{
unsigned int i;
int ret;
/* Process each descriptor in the list */
for (i = 0; i < nfds; i++)
{
/* Setup the poll descriptor */
fds[i].sem = sem;
fds[i].revents = 0;
fds[i].priv = NULL;
/* Check for invalid descriptors. "If the value of fd is less than 0,
* events shall be ignored, and revents shall be set to 0 in that entry
* on return from poll()."
*
* NOTE: There is a potential problem here. If there is only one fd
* and if it is negative, then poll will hang. From my reading of the
* spec, that appears to be the correct behavior.
*/
if (fds[i].fd >= 0)
{
/* Set up the poll on this valid file descriptor */
ret = poll_fdsetup(fds[i].fd, &fds[i], true);
if (ret < 0)
{
return ret;
}
}
}
return OK;
}
