Enum PublishStrategy 

pub enum PublishStrategy {
    Scalar,
    Movdir64b,
}

Publish strategy chosen at runtime per CPUID.

Variants

Scalar

Byte-by-byte store path: the publisher writes items into the mailbox slots through normal cached stores, then Release- stores the state word to READY. Universally available.

Movdir64b

MOVDIR64B path: the publisher builds a 64-byte source line containing the new state plus all items, then issues one MOVDIR64B instruction that atomically writes the entire 64-byte mailbox cache line as a Write-Combining store. On cross-CCX delivery the line is written directly to LLC, eliminating the M-state coherence transfer the byte-by-byte path pays. Available on Intel Tremont (2019) / Tiger Lake (2020) and later Intel cores and AMD Zen 5 (2024) and later AMD cores; detected via CPUID leaf 7 ECX bit 28.

Implementations

impl PublishStrategy

pub fn pick() -> Self

Returns the best publish strategy for this host.

Trait Implementations

impl Clone for PublishStrategy

fn clone(&self) -> PublishStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PublishStrategy

impl Debug for PublishStrategy

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

Formats the value using the given formatter.

impl Eq for PublishStrategy

impl PartialEq for PublishStrategy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PublishStrategy