Struct JournalStatsSection4 

#[repr(C, align(64))]
pub struct JournalStatsSection4 {
    pub pub_payload_bytes: IndexbusAtomicU64,
    pub pub_records: IndexbusAtomicU64,
    pub pad_records: IndexbusAtomicU64,
    pub rotations: IndexbusAtomicU64,
    pub pub_would_overrun: IndexbusAtomicU64,
    pub pub_forced_catchup: IndexbusAtomicU64,
    pub sub_overruns: [IndexbusAtomicU64; 4],
    pub pad_to_128: [u8; 48],
}

Optional appended stats/counters section for a journal region.

v1 policy: this section is append-only and only present when caps::INDEXBUS_CAP_SUPPORTS_JOURNAL_STATS is set and LayoutHeader.layout_bytes covers it.

Fields

pub_payload_bytes: IndexbusAtomicU64

Total payload bytes committed by the publisher.

pub_records: IndexbusAtomicU64

Total committed records (non-PAD).

pad_records: IndexbusAtomicU64

Total committed PAD records.

rotations: IndexbusAtomicU64

Total segment rotations performed.

pub_would_overrun: IndexbusAtomicU64

Publisher hit configured boundedness (would overrun).

pub_forced_catchup: IndexbusAtomicU64

Publisher forced subscribers forward (catch-up policy).

sub_overruns: [IndexbusAtomicU64; 4]

Subscriber-detected overruns (best-effort).

pad_to_128: [u8; 48]

Padding to 128 bytes (reserved for future appended stats).