pub struct EffectGuard { /* private fields */ }Expand description
Outstanding handle on one acquired refcount of an EffectSlot.
Constructed only by EffectManager::acquire via EffectGuard::new
(one guard per successful acquire, including dedup hits). Consumed
by release, which atomically decrements the slot’s refcount under
the slot mutex and returns the EffectHandle to the releaser whose
decrement hit zero (i.e. exactly once per fully-acquired slot).
Not Clone, not Copy, with a private slot field: the
type-level non-cloneability plus the crate-internal-only
constructor keep refcount and outstanding-guard count in lockstep.
Implementations§
Source§impl EffectGuard
impl EffectGuard
Sourcepub async fn release(self) -> ReleaseOutcome
pub async fn release(self) -> ReleaseOutcome
Atomic decrement-and-take under the slot mutex.
Returns LastHolder { handle } exactly once per slot (the call
that drove refcount from 1 to 0) and Deferred { ... } from
every other release on the same slot, carrying the metadata the
caller needs to emit a zero-duration deferred-cleanup span.
The handle is moved out of the slot; the slot becomes
EffectSlot::Empty. Callers run the returned handle’s cleanup
body after this method returns, so the slot mutex is not held
during cleanup.
Auto Trait Implementations§
impl !RefUnwindSafe for EffectGuard
impl !UnwindSafe for EffectGuard
impl Freeze for EffectGuard
impl Send for EffectGuard
impl Sync for EffectGuard
impl Unpin for EffectGuard
impl UnsafeUnpin for EffectGuard
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