Struct VolatileSliceGuard

pub struct VolatileSliceGuard<'a, PtrGuardType, BitmapType: Bitmap> {
    _ptr_guards: Vec<PtrGuardType>,
    dirty_on_drop: Option<Vec<(&'a BitmapType, usize)>>,
}

Ensures an I/O vector’s validity when created from [VolatileSlice].

[VolatileSlice] arrays may require being explicitly mapped before use (and unmapped after), and this guard ensures that the memory is mapped until it is dropped.

Further, for mutable vectors (IoVectorMut), it will also dirty the corresponding bitmap slices when dropped, assuming the whole vector has been written.

Fields

_ptr_guards: Vec<PtrGuardType>

vm-memory’s pointer guards ensuring the memory remains mapped while used.

dirty_on_drop: Option<Vec<(&'a BitmapType, usize)>>

If given, mark the given dirty bitmap range as dirty when dropping this guard.

.1 is the length of the respective VolatileSlice (i.e. the length of the area to dirty).

Trait Implementations

impl<P, B: Bitmap> Drop for VolatileSliceGuard<'_, P, B>

fn drop(&mut self)

Executes the destructor for this type.