WorkerParker

mmtk::scheduler::worker_monitor

Struct WorkerParker 

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struct WorkerParker {
    worker_count: usize,
    parked_workers: AtomicUsize,
}
Expand description

This struct counts the number of workers parked and identifies the last parked worker.

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§worker_count: usize

The total number of workers.

§parked_workers: AtomicUsize

Number of parked workers. The counter can be read without a lock, but can only be mutated while holding the monitor’s lock.

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impl WorkerParker

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fn new(worker_count: usize) -> Self

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fn parked_workers(&self) -> usize

Number of workers currently inside park_and_wait. Deliberately readable without the monitor’s lock.

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fn inc_parked_workers(&self, _sync: &WorkerMonitorSync) -> bool

Increase the packed-workers counter. Called before a worker is parked. The caller must hold the monitor’s lock.

Return true if all the workers are parked.

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fn dec_parked_workers(&self, _sync: &WorkerMonitorSync)

Decrease the packed-workers counter. Called after a worker is resumed from the parked state. The caller must hold the monitor’s lock.

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