msrt 0.1.1

Portable MSRT protocol implementation.
Documentation 
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//! Engine scheduling boundaries.

use crate::engine::time::Instant;

/// Engine scheduling decision.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum Schedule {
    /// No scheduled wakeup is required.
    Idle,
    /// Engine should be ticked again at the given instant.
    WakeAt(Instant),
}

impl Schedule {
    /// Returns whether this schedule is idle.
    #[must_use]
    pub const fn is_idle(self) -> bool {
        matches!(self, Self::Idle)
    }
}

/// Schedules future engine progress.
pub trait Scheduler {
    /// Requests a future engine wakeup.
    fn schedule(&mut self, schedule: Schedule);

    /// Returns the next scheduled engine wakeup.
    fn next_wake(&self) -> Schedule;
}