Struct miri::borrow_tracker::stacked_borrows::Stacks

pub struct Stacks {
    stacks: RangeMap<Stack>,
    history: AllocHistory,
    exposed_tags: FxHashSet<BorTag>,
    modified_since_last_gc: bool,
}

Extra per-allocation state.

Fields

stacks: RangeMap<Stack>

history: AllocHistory

Stores past operations on this allocation

exposed_tags: FxHashSet<BorTag>

The set of tags that have been exposed inside this allocation.

modified_since_last_gc: bool

Whether this memory has been modified since the last time the tag GC ran

Implementations

impl Stacks

Integration with the BorTag garbage collector

pub fn remove_unreachable_tags(&mut self, live_tags: &FxHashSet<BorTag>)

impl<'tcx> Stacks

Map per-stack operations to higher-level per-location-range operations.

fn new(
    size: Size,
    perm: Permission,
    tag: BorTag,
    id: AllocId,
    machine: &MiriMachine<'_, '_>
) -> Self

Creates a new stack with an initial tag. For diagnostic purposes, we also need to know the AllocId of the allocation this is associated with.

fn for_each(
    &mut self,
    range: AllocRange,
    dcx_builder: DiagnosticCxBuilder<'_, '_, 'tcx>,
    f: impl FnMut(&mut Stack, &mut DiagnosticCx<'_, '_, '_, 'tcx>, &mut FxHashSet<BorTag>) -> InterpResult<'tcx>
) -> InterpResult<'tcx>

Call f on every stack in the range.

impl Stacks

Glue code to connect with Miri Machine Hooks

pub fn new_allocation(
    id: AllocId,
    size: Size,
    state: &mut GlobalStateInner,
    kind: MemoryKind<MiriMemoryKind>,
    machine: &MiriMachine<'_, '_>
) -> Self

pub fn before_memory_read<'tcx, 'mir, 'ecx>(
    &mut self,
    alloc_id: AllocId,
    tag: ProvenanceExtra,
    range: AllocRange,
    machine: &'ecx MiriMachine<'mir, 'tcx>
) -> InterpResult<'tcx>where
    'tcx: 'ecx,

pub fn before_memory_write<'tcx>(
    &mut self,
    alloc_id: AllocId,
    tag: ProvenanceExtra,
    range: AllocRange,
    machine: &mut MiriMachine<'_, 'tcx>
) -> InterpResult<'tcx>

pub fn before_memory_deallocation<'tcx>(
    &mut self,
    alloc_id: AllocId,
    tag: ProvenanceExtra,
    range: AllocRange,
    machine: &mut MiriMachine<'_, 'tcx>
) -> InterpResult<'tcx>

Trait Implementations

impl Clone for Stacks

fn clone(&self) -> Stacks

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Stacks

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

Formats the value using the given formatter.

impl VisitTags for Stacks

fn visit_tags(&self, visit: &mut dyn FnMut(BorTag))

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 240 bytes