|AIO_CANCEL(2)||System Calls Manual||AIO_CANCEL(2)|
cancel an outstanding asynchronous I/O operation
Standard C Library (libc, -lc)
fildes, struct aiocb
system call cancels the outstanding asynchronous I/O request for the file
descriptor specified in fildes. If
iocb is specified, only that specific asynchronous I/O
request is cancelled.
Normal asynchronous notification occurs for cancelled requests.
Requests complete with an error result of
system call does not cancel asynchronous I/O requests for raw disk devices.
aio_cancel() system call will always return
AIO_NOTCANCELED for file descriptors associated with
raw disk devices.
aio_cancel() system call returns -1 to
indicate an error, or one of the following:
- All outstanding requests meeting the criteria specified were cancelled.
- Some requests were not cancelled, status for the requests should be checked with aio_error(2).
- All of the requests meeting the criteria have finished.
An error return from
- The fildes argument is an invalid file descriptor.
aio_cancel() system call is expected
to conform to the IEEE Std 1003.1
aio_cancel() system call first
appeared in FreeBSD 3.0. The first functional
aio_cancel() appeared in
|January 19, 2000||Debian|