Struct IODataQueueMemory 

#[repr(C)]
pub struct IODataQueueMemory {
    pub queueSize: u32,
    pub head: u32,
    pub tail: u32,
    pub queue: [IODataQueueEntry; 1],
}

A struct mapping to the header region of a data queue.

This struct is variable sized. The struct represents the data queue header information plus a pointer to the actual data queue itself. The size of the struct is the combined size of the header fields (3 * sizeof(UInt32)) plus the actual size of the queue region. This size is stored in the queueSize field. Field: queueSize The size of the queue region pointed to by the queue field. Field: head The location of the queue head. This field is represented as a byte offset from the beginning of the queue memory region. Field: tail The location of the queue tail. This field is represented as a byte offset from the beginning of the queue memory region. Field: queue Represents the beginning of the queue memory region. The size of the region pointed to by queue is stored in the queueSize field.

See also Apple’s documentation

Fields

queueSize: u32

head: u32

tail: u32

queue: [IODataQueueEntry; 1]

Trait Implementations

impl Clone for IODataQueueMemory

fn clone(&self) -> IODataQueueMemory

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IODataQueueMemory

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

Formats the value using the given formatter.

impl Encode for IODataQueueMemory

Available on crate feature objc2 only.

const ENCODING: Encoding

The Objective-C type-encoding for this type.

impl PartialEq for IODataQueueMemory

fn eq(&self, other: &IODataQueueMemory) -> 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 RefEncode for IODataQueueMemory

Available on crate feature objc2 only.

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for IODataQueueMemory

impl StructuralPartialEq for IODataQueueMemory