Struct SmallMessage 

#[repr(C)]
pub struct SmallMessage {
    pub capability: u64,
    pub opcode: u32,
    pub flags: u32,
    pub data: [u64; 4],
}

Small message for register-based transfers (≤64 bytes)

This structure is optimized for fast register-based IPC where the entire message can be passed in CPU registers without memory access.

Fields

capability: u64

Capability token for the operation

opcode: u32

Message type/operation code

flags: u32

Message flags

data: [u64; 4]

Payload (up to 4 registers)

Implementations

impl SmallMessage

pub const fn new(capability: u64, opcode: u32) -> Self

Create a new small message

pub fn with_flags(self, flags: u32) -> Self

Set message flags

pub fn with_data(self, index: usize, value: u64) -> Self

Set data at specific index

pub const fn size() -> usize

Get the total size of the message

Trait Implementations

impl Clone for SmallMessage

fn clone(&self) -> SmallMessage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SmallMessage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for SmallMessage

fn eq(&self, other: &SmallMessage) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SmallMessage

impl Eq for SmallMessage

impl StructuralPartialEq for SmallMessage