Struct MessageHeader 

pub struct MessageHeader {
    pub size: AtomicU32,
    /* private fields */
}

Message header. size is the cross-thread control word (AtomicU32).

The header occupies exactly 8 bytes (one ring-buffer block). The payload immediately follows and stores:

[info_ptr: *const StaticInfo (8B)] [timestamp: i64 (8B)] [encoded args...]

Layout constants PAYLOAD_INFO_OFFSET, PAYLOAD_TIMESTAMP_OFFSET, PAYLOAD_ARGS_OFFSET, and PAYLOAD_HEADER_SIZE describe the payload structure.

Fields

size: AtomicU32

Total message size in bytes (header + payload), used as an atomic control word.

Implementations

impl MessageHeader

pub fn push(&self, payload_size: u32)

Publish a message: performs a Release store of the total size, making the payload visible to the consumer.

pub fn payload_pointer(&self) -> *mut u8

Returns a pointer to the beginning of the payload (immediately after the header).