NAME

       io_queue_init - Initialize asynchronous io state machine

SYNOPSIS

       #include <errno.h>

       #include <libaio.h>

       int io_queue_init(int maxevents, io_context_t *ctx);

DESCRIPTION

       io_queue_init Attempts to create an aio context capable of receiving at least maxevents events.  ctx must
       point  to  an  aio  context  that  already  exists  and must be initialized to 0 before the call.  If the
       operation is successful, *cxtp is filled with the resulting handle.

RETURN VALUES

       On success, io_queue_init returns 0.  Otherwise, -error is return, where error is one of the Exxx  values
       defined in the Errors section.

ERRORS

       EFAULT iocbs referenced data outside of the program's accessible address space.

       EINVAL maxevents is <= 0 or ctx is an invalid memory location.

       ENOSYS Not implemented.

       EAGAIN maxevents > max_aio_reqs where max_aio_reqs is a tunable value.

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_release(3), io_queue_run(3), io_queue_wait(3), io_set_callback(3), io_submit(3), errno(3).

Linux 2.4                                          2009-06-10                                   io_queue_init(2)