Struct shuttle::scheduler::RoundRobinScheduler

pub struct RoundRobinScheduler { /* private fields */ }

A round robin scheduler that chooses the next available runnable task at each context switch.

Implementations

impl RoundRobinScheduler

pub fn new(max_iterations: usize) -> Self

Construct a new RoundRobinScheduler that will execute the test up to max_iteration times, scheduling its tasks in a round-robin fashion.

Trait Implementations

impl Debug for RoundRobinScheduler

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

Formats the value using the given formatter.

impl Default for RoundRobinScheduler

fn default() -> Self

Returns the “default value” for a type.

impl Scheduler for RoundRobinScheduler

fn new_execution(&mut self) -> Option<Schedule>

Inform the Scheduler that a new execution is about to begin. If this function returns None, the test will end rather than performing another execution. If it returns Some(schedule), the returned Schedule can be used to initialize a ReplayScheduler for deterministic replay.

fn next_task( &mut self, runnable: &[TaskId], current: Option<TaskId>, _is_yielding: bool ) -> Option<TaskId>

Decide which task to run next, given a list of runnable tasks and the currently running tasks. This method returns Some(task) where task is the runnable task to be executed next; it may also return None, indicating that the execution engine should stop exploring the current schedule.

fn next_u64(&mut self) -> u64

Choose the next u64 value to return to the currently running task.