Struct GuardWithDeferredDrop 

pub(super) struct GuardWithDeferredDrop<'m> {
    guard: Option<MutexGuard<'m, State>>,
    deferred_drop: Vec<ProtectedArc<dyn IsParticipant>>,
}

MutexGuard<State> but also a list of Arc<dyn Participant> to drop when we unlock

Fields

guard: Option<MutexGuard<'m, State>>

The mutex guard

Always Some; just an Option so we can move out during drop

deferred_drop: Vec<ProtectedArc<dyn IsParticipant>>

The participants we’ve acquired and which we want to drop later

Implementations

impl<'m> GuardWithDeferredDrop<'m>

pub(super) fn new(guard: MutexGuard<'m, State>) -> Self

Prepare for handling deferred drops

pub(super) fn deref_mut_both( &mut self, ) -> (&mut State, &mut Vec<ProtectedArc<dyn IsParticipant>>)

Obtain mutable borrows of the two components

Methods from Deref<Target = State>

fn get_aid_and_children_recursively(&self, parent_aid: AId) -> HashSet<AId>

Obtain all of the descendants of parent_aid according to the Child relation

The returned HashSet includes parent_aid, its children, their children, and so on.

Used in the reclamation algorithm in reclaim.

fn prepare_parent_aid(&mut self, parent: &Account) -> Result<AId>

Find and check the requested parent’s account ID

This function is responsible for garbage collecting dead children from parent’s children. On successful return, a new child can be added without extending children.

This is called in preparation for adding another account to parent’s list of child accounts.

Returns an error if the specified parent account is not enabled, or if it has been torn down.

Trait Implementations

impl<'m> Debug for GuardWithDeferredDrop<'m>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'m> Default for GuardWithDeferredDrop<'m>

fn default() -> GuardWithDeferredDrop<'m>

Returns the “default value” for a type.

impl Deref for GuardWithDeferredDrop<'_>

type Target = State

The resulting type after dereferencing.

fn deref(&self) -> &State

Dereferences the value.

impl DerefMut for GuardWithDeferredDrop<'_>

fn deref_mut(&mut self) -> &mut State

Mutably dereferences the value.

impl Drop for GuardWithDeferredDrop<'_>

fn drop(&mut self)

Executes the destructor for this type.