Enum RuntimeSchedulerEntry 

#[repr(u32)]
pub enum RuntimeSchedulerEntry {
    Task = 0,
    PreemptExit = 1,
    IrqReturn = 2,
    IrqGuardExit = 3,
    IrqReturnContinuation = 4,
}

Typed source of one scheduler-frame baton.

The runtime uses this value to validate and atomically transform its CPU-local preemption state. In particular, preemption-guard exits retain their final lock depth until the scheduler frame owns the baton, closing the interrupt window between enabling preemption and entering the scheduler.

Variants

Task = 0

Ordinary task context with IRQs enabled and no preemption guard.

PreemptExit = 1

Final task-context preemption guard exit with IRQs disabled.

The runtime retains the final preemption depth while it disables raw IRQs, then atomically converts that depth into the scheduler baton.

IrqReturn = 2

Final IRQ-return preemption guard exit with IRQs still disabled.

IrqGuardExit = 3

Final task-context IRQ publication guard exit with IRQs disabled.

The runtime retains the final IRQ-guard depth after publishing local scheduler work, then atomically converts that depth into the scheduler baton. This is the local counterpart of a remote scheduler IPI.

IrqReturnContinuation = 4

A repeated IRQ-return pass after the previous scheduler frame fully released its switch baton.

The caller enters with hardware IRQs disabled and preemption depth zero. Before claiming the fresh scheduler baton, the runtime establishes one ordinary preemption depth, opens the Linux-style IRQ window, disables IRQs again, and atomically converts that depth into the scheduler baton.

Trait Implementations

impl Clone for RuntimeSchedulerEntry

fn clone(&self) -> RuntimeSchedulerEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RuntimeSchedulerEntry

impl Debug for RuntimeSchedulerEntry

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

Formats the value using the given formatter.

impl Eq for RuntimeSchedulerEntry

impl PartialEq for RuntimeSchedulerEntry

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RuntimeSchedulerEntry