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RcuBaseRetirePerm

vstd_extra::rcu_objects

Struct RcuBaseRetirePerm 

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pub struct RcuBaseRetirePerm<T> { /* private fields */ }
Expand description

Unique base permission retained until the allocation is retired.

This token supplies linear identity, not evidence of detachment or a grace period. It cannot justify reclaiming physical ownership by itself.

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impl<T> RcuBaseRetirePerm<T>

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pub closed spec fn domain(self) -> Loc

Protection domain of the matching block information.

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pub closed spec fn obj(self) -> nat

Allocation ID for which this permission is unique.

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pub closed spec fn ptr(self) -> *mut T

Typed pointer supplied at registration.

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pub closed spec fn addr(self) -> usize

Physical address of the registered allocation.

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pub closed spec fn belongs_to(self, domain: RcuDomainAuth) -> bool

Binds the permission to both registries owned by the domain.

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pub proof fn lemma_distinct(tracked &mut self, tracked other: &Self, domain: RcuDomainAuth)

requires
old(self).belongs_to(domain),
other.belongs_to(domain),
ensures
final(self).domain() == old(self).domain(),
final(self).obj() == old(self).obj(),
final(self).ptr() == old(self).ptr(),
final(self).addr() == old(self).addr(),
final(self).inv() == old(self).inv(),
final(self).belongs_to(domain),
final(self).obj() != other.obj(),

Proves that two base retire permissions cannot name the same allocation.

§Preconditions

Both permissions belong to the same domain.

§Postconditions

Their allocation IDs differ and this permission is preserved.

Trait Implementations§

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impl<T> Inv for RcuBaseRetirePerm<T>

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closed spec fn inv(self) -> bool

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