Struct SharedFanoutLayout 

#[repr(C, align(64))]
pub struct SharedFanoutLayout<const N: usize> {
    pub header: LayoutHeader,
    pub initialized: IndexbusAtomicU32,
    pub pad0: u32,
    pub pad_to_64: [u8; 40],
    pub slot_pool: SlotPoolLayout,
    pub producer_queue: IndexQueue,
    pub producer_queue_mpsc: MpscQueue,
    pub router_rr: IndexbusAtomicU32,
    pub pad_router_rr: u32,
    pub consumer_queues: [IndexQueue; N],
}

Fanout events region base layout (generic over consumer count).

Note: C header generation typically uses a concrete N (see SharedFanoutLayout4).

Fields

header: LayoutHeader

Common region header (magic/version/capabilities/layout size).

initialized: IndexbusAtomicU32

0 = uninitialized, 1 = initializing, 2 = initialized

pad0: u32

Padding (reserved).

pad_to_64: [u8; 40]

Pad to 64 so SlotPoolLayout (align 64) starts at offset 64.

slot_pool: SlotPoolLayout

Slot pool backing all queues.

producer_queue: IndexQueue

SPSC producer queue of slot indices.

producer_queue_mpsc: MpscQueue

MPSC producer queue of slot indices.

router_rr: IndexbusAtomicU32

Router round-robin cursor used by work-queue routing.

pad_router_rr: u32

Padding (reserved).

consumer_queues: [IndexQueue; N]

Per-consumer SPSC queues.

Implementations

impl<const N: usize> SharedFanoutLayout<N>

pub const REQUIRED_CAPS: u32

Capabilities required for this region to be considered compatible.