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use crate::loom::sync::atomic::Ordering::Relaxed;
use crate::util::metric_atomics::MetricAtomicU64;
/// Retrieves metrics from the Tokio runtime.
///
/// **Note**: This is an [unstable API][unstable]. The public API of this type
/// may break in 1.x releases. See [the documentation on unstable
/// features][unstable] for details.
///
/// [unstable]: crate#unstable-features
#[derive(Debug)]
pub(crate) struct SchedulerMetrics {
/// Number of tasks that are scheduled from outside the runtime.
pub(super) remote_schedule_count: MetricAtomicU64,
pub(super) budget_forced_yield_count: MetricAtomicU64,
}
impl SchedulerMetrics {
pub(crate) fn new() -> SchedulerMetrics {
SchedulerMetrics {
remote_schedule_count: MetricAtomicU64::new(0),
budget_forced_yield_count: MetricAtomicU64::new(0),
}
}
/// Increment the number of tasks scheduled externally
pub(crate) fn inc_remote_schedule_count(&self) {
self.remote_schedule_count.add(1, Relaxed);
}
/// Increment the number of tasks forced to yield due to budget exhaustion
pub(crate) fn inc_budget_forced_yield_count(&self) {
self.budget_forced_yield_count.add(1, Relaxed);
}
}