Struct SequencerGatingCell 

#[repr(C, align(64))]
pub struct SequencerGatingCell {
    pub seq: IndexbusAtomicU64,
    pub pad_to_64: [u8; 56],
}

A single consumer gating sequence, padded to a full cache line.

This matches the common low-latency practice of avoiding false sharing between independent consumer progress counters.

Fields

seq: IndexbusAtomicU64

Consumer gating sequence (monotonic).

pad_to_64: [u8; 56]

Padding to keep this counter in its own cache line.