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VmStore

ostd::specs::mm::vm_space_embedding

Struct VmStore

pub struct VmStore<'rcu> {
    pub regions: MetaRegionOwners,
    pub vm_spaces: Map<VmSpaceId, VmSpaceOwner>,
    pub cursors: Map<CursorId, CursorEntry<'rcu>>,
    pub vm_ios: Map<VmIoId, VmIoEntry>,
}

Expand description

Resource store: the abstract state visible to a caller of the VmSpace API.

Stage 2 tracks regions, vm_spaces, and cursors. Later stages add vm_ios.

Fields§

§regions: MetaRegionOwners§vm_spaces: Map<VmSpaceId, VmSpaceOwner>§cursors: Map<CursorId, CursorEntry<'rcu>>§vm_ios: Map<VmIoId, VmIoEntry>

Implementations§

impl<'a, 'rcu> VmStore<'rcu>

pub open spec fn inv(self) -> bool

{
    &&& self.regions.inv()
    &&& forall |id: VmSpaceId| {
        #[trigger] self.vm_spaces.dom().contains(id) ==> self.vm_spaces[id].inv()
    }
    &&& forall |id: CursorId| {
        #[trigger] self.cursors.dom().contains(id) ==> self.cursors[id].owner.inv()
    }
    &&& forall |id: CursorId| {
        #[trigger] self.cursors.dom().contains(id)
            ==> self.vm_spaces.dom().contains(self.cursors[id].vm_space)
    }
    &&& forall |id: VmIoId| {
        #[trigger] self.vm_ios.dom().contains(id) ==> self.vm_ios[id].owner.inv()
    }
    &&& forall |id: VmIoId| {
        #[trigger] self.vm_ios.dom().contains(id)
            ==> self.vm_spaces.dom().contains(self.vm_ios[id].vm_space)
    }

}

The store’s top-level invariant. Aggregates the per-component invariants of every owner the store holds, plus cross-store consistency (every cursor and every VmIo refers to a live VmSpace).

Auto Trait Implementations§

impl<'rcu> Freeze for VmStore<'rcu>

impl<'rcu> !RefUnwindSafe for VmStore<'rcu>

impl<'rcu> Send for VmStore<'rcu>

impl<'rcu> Sync for VmStore<'rcu>

impl<'rcu> Unpin for VmStore<'rcu>

impl<'rcu> UnsafeUnpin for VmStore<'rcu>

impl<'rcu> !UnwindSafe for VmStore<'rcu>

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, VERUS_SPEC__A> FromSpec<T> for VERUS_SPEC__A
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fn obeys_from_spec() -> bool

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Calls U::from(self).

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