aio_return — retrieve return status of asynchronous I/O operation (REALTIME)
Standard C Library (libc, −lc)
aio_return(struct aiocb *iocb);
The aio_return() system call returns the final status of the asynchronous I/O request associated with the structure pointed to by iocb.
The aio_return() system call should only be called once, to obtain the final status of an asynchronous I/O operation once it has completed (aio_error(2) returns something other than EINPROGRESS).
If the asynchronous I/O request has completed, the status is returned as described in read(2), write(2), or fsync(2). Otherwise, aio_return() returns −1 and sets errno to indicate the error condition.
The aio_return() system call will fail if:
The iocb argument does not reference a completed asynchronous I/O request.
The aio_return() system call is expected to conform to the IEEE Std 1003.1 (’’POSIX.1’’) standard.
The aio_return() system call first appeared in FreeBSD 3.0.
This manual page was written by Wes Peters <wes [AT] softweyr.com>.
BSD March 21, 2016 BSD