Function nc::io_setup

pub unsafe fn io_setup(
    nr_events: u32,
    ctx_id: &mut aio_context_t
) -> Result<(), Errno>

Create an asynchronous I/O context.

Create an aio_context capable of receiving at least nr_events. ctxp must not point to an aio_context that already exists, and must be initialized to 0 prior to the call.

On successful creation of the aio_context, *ctxp is filled in with the resulting handle.

Errors

• May fail with -EINVAL if *ctxp is not initialized, if the specified nr_events exceeds internal limits.
• May fail with -EAGAIN if the specified nr_events exceeds the user’s limit of available events.
• May fail with -ENOMEM if insufficient kernel resources are available.
• May fail with -EFAULT if an invalid pointer is passed for ctxp.
• Will fail with -ENOSYS if not implemented.