Section: Linux Programmer's Manual (3)
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aio_cancel - cancel an outstanding asynchronous I/O request
int aio_cancel(int fd, struct aiocb *aiocbp);
function attempts to cancel outstanding asynchronous I/O requests
for the file descriptor
is NULL, all such requests are cancelled. Otherwise, only the request
described by the control block pointed to by
Normal asynchronous notification occurs for cancelled requests.
The request return status is set to -1, and the request error status
is set to ECANCELED.
The control block of requests that cannot be cancelled is not changed.
is not NULL, and
differs from the file descriptor with which the asynchronous operation
was initiated, unspecified results occur.
Which operations are cancelable is implementation-defined.
This function returns AIO_CANCELED if all requests were successfully
cancelled. It returns AIO_NOTCANCELED when at least one of the
requests specified was not cancelled because it was in progress.
In this case one may check the status of individual requests using
This function returns AIO_ALLDONE when all requests had
been completed already before this call.
When some error occurs, -1 is returned, and
is set appropriately.
is not a valid file descriptor.
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
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