Struct ActiveScope 

pub struct ActiveScope;

Currently active scope.

Implementations

impl ActiveScope

pub unsafe fn set(scope: &Scope)

Sets the active scope pointer to the given scope.

Safety

The caller must ensure that the provided scope reference is valid for the duration in which it is set as the active scope, and that no data races or aliasing violations occur.

pub unsafe fn set_pinned(scope: &Scope, pin: &CpuPin<'_>)

Sets the active scope while borrowing an existing CPU pin.

This variant performs no context transition and is therefore suitable for scheduler and hard-IRQ code that already owns a pin.

Safety

The caller must keep scope alive for every current-CPU access until a later Self::set_global_pinned or pinned replacement, and must prevent concurrent mutable access to that scope’s items.

pub unsafe fn set_global()

Set the active scope to the global scope.

Safety

The caller must own the current raw activation. In particular, this function must not clear a scheduler-managed ScopeCell activation; that activation must be released through ScopeCell::deactivate_pinned.

pub unsafe fn set_global_pinned(pin: &CpuPin<'_>)

Sets the active scope to the global scope under an existing CPU pin.

Safety

The caller must own the current raw activation and must not bypass a scheduler-managed ScopeCell activation.

pub fn is_global() -> bool

Returns true if the active scope is the global scope.

pub fn is_global_pinned(pin: &CpuPin<'_>) -> bool

Returns true if the active scope is global under an existing CPU pin.

pub fn is_pinned(scope: &Scope, pin: &CpuPin<'_>) -> bool

Returns whether scope is the active scope selected by pin.

This does not acquire a scope lease. Callers must already own the scheduler or task-local serialization that keeps the selected scope alive and excludes mutation for the duration of their operation.