Enum MonitorWaitKind 

pub enum MonitorWaitKind {
    Waitpkg,
    Mwaitx,
    ArmWfe,
}

Which monitor-wait instruction family this host runs.

Variants

Waitpkg

Intel WAITPKG: UMONITOR / UMWAIT (also AMD Zen 5+). Preferred when both families exist: the deadline is an absolute TSC value (no u32 clamp) and the C-state hint is explicit.

Mwaitx

AMD MONITORX / MWAITX (Excavator+, all Zen).

ArmWfe

AArch64 LDAXR + WFE: load-exclusive arms the exclusive monitor on the line; the global monitor’s Exclusive->Open transition - ANY store to the line, including from another core or process - generates the wake event with no explicit SEV (ARM barrier-litmus appendix). Base-ISA instructions, so every aarch64 host takes this arm; wait granularity is bounded by interrupts and the kernel’s timer event stream rather than a per-wait hardware deadline, and the loop enforces the cycle budget on CNTVCT_EL0.

Trait Implementations

impl Clone for MonitorWaitKind

fn clone(&self) -> MonitorWaitKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MonitorWaitKind

impl Debug for MonitorWaitKind

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

Formats the value using the given formatter.

impl Eq for MonitorWaitKind

impl PartialEq for MonitorWaitKind

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