Struct ExchangeHeader 

#[repr(C)]
pub struct ExchangeHeader {
    pub event: u8,
    pub length: u8,
    pub magic: u16,
    pub peer: u32,
}

Header received from the kernel when waiting for at one event type

Received when returning from crate::syscall::wait_for_event syscall with a Status::Ok value. The kernel return data for a single event type at a time, store in event field, while wait_for_event() allows waiting for multiple event at a time.

Fields

event: u8

length: u8

magic: u16

peer: u32

Implementations

impl ExchangeHeader

pub unsafe fn from_exchange(self) -> Option<&'static Self>

Safety

• EXCHANGE_AREA must be correctly aligned for ExchangeHeader.
• EXCHANGE_AREA must be large enough to contain a full ExchangeHeader.
• The contents of EXCHANGE_AREA must be properly initialized for reading as an ExchangeHeader.

Violating any of these conditions may lead to undefined behavior.

impl ExchangeHeader

pub fn is_valid(self) -> bool

Trait Implementations

impl Clone for ExchangeHeader

fn clone(&self) -> ExchangeHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExchangeHeader

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

Formats the value using the given formatter.

impl PartialEq for ExchangeHeader

fn eq(&self, other: &ExchangeHeader) -> 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 ExchangeHeader

impl StructuralPartialEq for ExchangeHeader