static void aio_read_worker(FAR void *arg)
{
FAR struct aio_container_s *aioc = (FAR struct aio_container_s *)arg;
FAR struct aiocb *aiocbp;
pid_t pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
uint8_t prio;
#endif
ssize_t nread = 0;
/* Get the information from the container, decant the AIO control block,
* and free the container before starting any I/O. That will minimize
* the delays by any other threads waiting for a pre-allocated container.
*/
DEBUGASSERT(aioc && aioc->aioc_aiocbp);
pid = aioc->aioc_pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
prio = aioc->aioc_prio;
#endif
aiocbp = aioc_decant(aioc);
#ifdef AIO_HAVE_FILEP
{
/* Perform the file read using:
*
* u.aioc_filep - File structure pointer
* aio_buf - Location of buffer
* aio_nbytes - Length of transfer
* aio_offset - File offset
*/
nread = file_pread(aioc->u.aioc_filep, (FAR void *)aiocbp->aio_buf, aiocbp->aio_nbytes, aiocbp->aio_offset);
}
#endif
/* Set the result of the read */
if (nread < 0) {
int errcode = get_errno();
fdbg("ERROR: pread failed: %d\n", errcode);
DEBUGASSERT(errcode > 0);
aiocbp->aio_result = -errcode;
} else {
aiocbp->aio_result = nread;
}
/* Signal the client */
(void)aio_signal(pid, aiocbp);
#ifdef CONFIG_PRIORITY_INHERITANCE
/* Restore the low priority worker thread default priority */
lpwork_restorepriority(prio);
#endif
}
static void aio_fsync_worker(FAR void *arg)
{
FAR struct aio_container_s *aioc = (FAR struct aio_container_s *)arg;
FAR struct aiocb *aiocbp;
pid_t pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
uint8_t prio;
#endif
int ret;
/* Get the information from the container, decant the AIO control block,
* and free the container before starting any I/O. That will minimize
* the delays by any other threads waiting for a pre-allocated container.
*/
DEBUGASSERT(aioc && aioc->aioc_aiocbp);
pid = aioc->aioc_pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
prio = aioc->aioc_prio;
#endif
aiocbp = aioc_decant(aioc);
/* Perform the fsync using u.aioc_filep */
ret = file_fsync(aioc->u.aioc_filep);
if (ret < 0)
{
int errcode = get_errno();
ferr("ERROR: fsync failed: %d\n", errcode);
DEBUGASSERT(errcode > 0);
aiocbp->aio_result = -errcode;
}
else
{
aiocbp->aio_result = OK;
}
/* Signal the client */
(void)aio_signal(pid, aiocbp);
#ifdef CONFIG_PRIORITY_INHERITANCE
/* Restore the low priority worker thread default priority */
lpwork_restorepriority(prio);
#endif
}
int aio_cancel(int fildes, FAR struct aiocb *aiocbp)
{
FAR struct aio_container_s *aioc;
FAR struct aio_container_s *next;
int status;
int ret;
/* Check if a non-NULL aiocbp was provided */
/* Lock the scheduler so that no I/O events can complete on the worker
* thread until we set complete this operation.
*/
ret = AIO_ALLDONE;
sched_lock();
aio_lock();
if (aiocbp) {
/* Check if the I/O has completed */
if (aiocbp->aio_result == -EINPROGRESS) {
/* No.. Find the container for this AIO control block */
for (aioc = (FAR struct aio_container_s *)g_aio_pending.head; aioc && aioc->aioc_aiocbp != aiocbp; aioc = (FAR struct aio_container_s *)aioc->aioc_link.flink) ;
/* Did we find a container for this fildes? We should; the aio_result says
* that the transfer is pending. If not we return AIO_ALLDONE.
*/
if (aioc) {
/* Yes... attempt to cancel the I/O. There are two
* possibilities:* (1) the work has already been started and
* is no longer queued, or (2) the work has not been started
* and is still in the work queue. Only the second case can
* be cancelled. work_cancel() will return -ENOENT in the
* first case.
*/
status = work_cancel(LPWORK, &aioc->aioc_work);
if (status >= 0) {
aiocbp->aio_result = -ECANCELED;
ret = AIO_CANCELED;
} else {
ret = AIO_NOTCANCELED;
}
/* Remove the container from the list of pending transfers */
(void)aioc_decant(aioc);
}
}
} else {
/* No aiocbp.. cancel all outstanding I/O for the fildes */
next = (FAR struct aio_container_s *)g_aio_pending.head;
do {
/* Find the next container with this AIO control block */
for (aioc = next; aioc && aioc->aioc_aiocbp->aio_fildes != fildes; aioc = (FAR struct aio_container_s *)aioc->aioc_link.flink) ;
/* Did we find the container? We should; the aio_result says
* that the transfer is pending. If not we return AIO_ALLDONE.
*/
if (aioc) {
/* Yes... attempt to cancel the I/O. There are two
* possibilities:* (1) the work has already been started and
* is no longer queued, or (2) the work has not been started
* and is still in the work queue. Only the second case can
* be cancelled. work_cancel() will return -ENOENT in the
* first case.
*/
status = work_cancel(LPWORK, &aioc->aioc_work);
/* Remove the container from the list of pending transfers */
next = (FAR struct aio_container_s *)aioc->aioc_link.flink;
aiocbp = aioc_decant(aioc);
DEBUGASSERT(aiocbp);
if (status >= 0) {
aiocbp->aio_result = -ECANCELED;
if (ret != AIO_NOTCANCELED) {
ret = AIO_CANCELED;
}
} else {
ret = AIO_NOTCANCELED;
}
}
} while (aioc);
}
aio_unlock();
sched_unlock();
return ret;
}
static void aio_write_worker(FAR void *arg)
{
FAR struct aio_container_s *aioc = (FAR struct aio_container_s *)arg;
FAR struct aiocb *aiocbp;
pid_t pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
uint8_t prio;
#endif
ssize_t nwritten = 0;
#ifdef AIO_HAVE_FILEP
int oflags;
#endif
/* Get the information from the container, decant the AIO control block,
* and free the container before starting any I/O. That will minimize
* the delays by any other threads waiting for a pre-allocated container.
*/
DEBUGASSERT(aioc && aioc->aioc_aiocbp);
pid = aioc->aioc_pid;
#ifdef CONFIG_PRIORITY_INHERITANCE
prio = aioc->aioc_prio;
#endif
aiocbp = aioc_decant(aioc);
#if defined(AIO_HAVE_FILEP) && defined(AIO_HAVE_PSOCK)
if (aiocbp->aio_fildes < CONFIG_NFILE_DESCRIPTORS)
#endif
#ifdef AIO_HAVE_FILEP
{
/* Call fcntl(F_GETFL) to get the file open mode. */
oflags = file_fcntl(aioc->u.aioc_filep, F_GETFL);
if (oflags < 0)
{
int errcode = get_errno();
fdbg("ERROR: fcntl failed: %d\n", errcode);
aiocbp->aio_result = -errcode;
goto errout;
}
/* Perform the write using:
*
* u.aioc_filep - File structure pointer
* aio_buf - Location of buffer
* aio_nbytes - Length of transfer
* aio_offset - File offset
*/
/* Check if O_APPEND is set in the file open flags */
if ((oflags & O_APPEND) != 0)
{
/* Append to the current file position */
nwritten = file_write(aioc->u.aioc_filep,
(FAR const void *)aiocbp->aio_buf,
aiocbp->aio_nbytes);
}
else
{
nwritten = file_pwrite(aioc->u.aioc_filep,
(FAR const void *)aiocbp->aio_buf,
aiocbp->aio_nbytes,
aiocbp->aio_offset);
}
}
#endif
#if defined(AIO_HAVE_FILEP) && defined(AIO_HAVE_PSOCK)
else
#endif
#ifdef AIO_HAVE_PSOCK
{
/* Perform the send using:
*
* u.aioc_psock - Socket structure pointer
* aio_buf - Location of buffer
* aio_nbytes - Length of transfer
*/
nwritten = psock_send(aioc->u.aioc_psock,
(FAR const void *)aiocbp->aio_buf,
aiocbp->aio_nbytes, 0);
}
#endif
/* Check the result of the write */
if (nwritten < 0)
{
int errcode = get_errno();
fdbg("ERROR: write/pwrite failed: %d\n", errcode);
DEBUGASSERT(errcode > 0);
aiocbp->aio_result = -errcode;
}
else
{
aiocbp->aio_result = nwritten;
}
#ifdef AIO_HAVE_FILEP
errout:
#endif
/* Signal the client */
(void)aio_signal(pid, aiocbp);
#ifdef CONFIG_PRIORITY_INHERITANCE
/* Restore the low priority worker thread default priority */
lpwork_restorepriority(prio);
#endif
}
