Struct ShmLocator 

pub struct ShmLocator {
    pub hostname_hash: u32,
    pub uid: u32,
    pub slot_count: u32,
    pub slot_size: u32,
    pub segment_path: String,
}

SHM locator: all the data a same-host reader needs to attach to a writer SHM segment.

Fields

hostname_hash: u32

FNV-1a hash of the hostname. Same-host match anchor.

uid: u32

POSIX UID of the writer process. Prevents cross-user attaches on shared hosts.

slot_count: u32

Number of slots in the segment.

slot_size: u32

Total slot size (header + data + padding).

segment_path: String

SHM segment path (e.g. /zddspub_<entity_id>).

Implementations

impl ShmLocator

pub fn to_bytes_le(&self) -> Result<Vec<u8>, LocatorError>

Encodes little-endian. For the layout, see the module docs.

Errors

PathTooLong when segment_path.len() > 256.

pub fn from_bytes_le(bytes: &[u8]) -> Result<Self, LocatorError>

Decodes from little-endian bytes.

Errors

TruncatedHeader, TruncatedString, InvalidUtf8, PathTooLong.

Trait Implementations

impl Clone for ShmLocator

fn clone(&self) -> ShmLocator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShmLocator

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

Formats the value using the given formatter.

impl Eq for ShmLocator

impl PartialEq for ShmLocator

fn eq(&self, other: &ShmLocator) -> 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 StructuralPartialEq for ShmLocator