debian man page for io_set_callback

io_set_callback(3)						       Linux							io_set_callback(3)

NAME
       io_set_callback - Set up io completion callback function

SYNOPSYS
       #include <errno.h>

       #include <libaio.h>

       static inline void io_set_callback(struct iocb *iocb, io_callback_t cb);

       struct iocb {
	    void      *data;
	    unsigned  key;
	    short	   aio_lio_opcode;
	    short	   aio_reqprio;
	    int       aio_fildes;
       };

       typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);

DESCRIPTION
       The callback is not done if the caller uses raw events from io_getevents, only with the library helpers.

RETURN VALUES
       None.

ERRORS
       None.

SEE ALSO
       io(3),	 io_cancel(3),	  io_fsync(3),	 io_getevents(3),   io_prep_fsync(3),	io_prep_pread(3),   io_prep_pwrite(3),	 io_queue_init(3),
       io_queue_release(3), io_queue_run(3), io_queue_wait(3), io_submit(3), errno(3).

Linux 2.4							    2009-06-10							io_set_callback(3)