Enum CtGatePosture 

#[non_exhaustive]
pub enum CtGatePosture {
    HardwareSpeculationBarrier,
    OrderingFence,
    CompilerFenceOnly,
}

Constant-time result-gate barrier posture for this build and target.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

HardwareSpeculationBarrier

The target uses a native speculation barrier before public CT success/failure or equality-result branches.

On AArch64 this uses isb sy plus the CSDB hint encoding. Full CSDB effectiveness depends on the deployed ARM architecture level; older cores may treat the hint as a no-op.

OrderingFence

The target uses an ordering fence where the base ISA does not provide a canonical speculation barrier.

CompilerFenceOnly

The target uses compiler fences only.

Implementations

impl CtGatePosture

pub const fn as_str(self) -> &'static str

Returns the stable lowercase identifier for this CT gate posture.

Trait Implementations

impl Clone for CtGatePosture

fn clone(&self) -> CtGatePosture

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CtGatePosture

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

Formats the value using the given formatter.

impl Display for CtGatePosture

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

Formats the value using the given formatter.

impl PartialEq for CtGatePosture

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

impl Eq for CtGatePosture

impl StructuralPartialEq for CtGatePosture