.\"static inline void io_set_callback(struct iocb *iocb, io_callback_t cb)
.TH io_set_callback 3 2019-07-23 "Linux" "Linux AIO"
.SH NAME
io_set_callback \- Set up io completion callback function
.SH SYNOPSIS
.nf
.B #include <errno.h>
.br
.sp
.B #include <libaio.h>
.br
.sp
.BI "static inline void io_set_callback(struct iocb *" iocb ", io_callback_t " cb ");"
.sp
struct iocb {
	void		*data;
	unsigned	key;
	short		aio_lio_opcode;
	short		aio_reqprio;
	int		aio_fildes;
};
.sp
typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);
.sp
.fi
.SH DESCRIPTION
The callback is not done if the caller uses raw events from 
.BR io_getevents (3),
only with the library helpers.
.SH "RETURN VALUES"
None.
.SH ERRORS
None.
.SH "SEE ALSO"
.BR io (3),
.BR io_cancel (3),
.BR io_fsync (3),
.BR io_getevents (3),
.BR io_prep_fsync (3),
.BR io_prep_pread (3),
.BR io_prep_pwrite (3),
.BR io_queue_init (3),
.BR io_queue_release (3),
.BR io_queue_run (3),
.BR io_queue_wait (3),
.BR io_submit (3),
.BR errno (3).