Struct miri::stacked_borrows::GlobalStateInner

pub struct GlobalStateInner {
    next_ptr_tag: SbTag,
    base_ptr_tags: FxHashMap<AllocId, SbTag>,
    next_call_id: CallId,
    protected_tags: FxHashSet<SbTag>,
    tracked_pointer_tags: FxHashSet<SbTag>,
    tracked_call_ids: FxHashSet<CallId>,
    retag_fields: bool,
}

Extra global state, available to the memory access hooks.

Fields

next_ptr_tag: SbTag

Next unused pointer ID (tag).

base_ptr_tags: FxHashMap<AllocId, SbTag>

Table storing the “base” tag for each allocation. The base tag is the one used for the initial pointer. We need this in a separate table to handle cyclic statics.

next_call_id: CallId

Next unused call ID (for protectors).

protected_tags: FxHashSet<SbTag>

All currently protected tags. An item is protected if its tag is in this set, and it has the “protected” bit set. We add tags to this when they are created with a protector in reborrow, and we remove tags from this when the call which is protecting them returns, in GlobalStateInner::end_call. See Stack::item_popped for more details.

tracked_pointer_tags: FxHashSet<SbTag>

The pointer ids to trace

tracked_call_ids: FxHashSet<CallId>

The call ids to trace

retag_fields: bool

Whether to recurse into datatypes when searching for pointers to retag.

Implementations

impl GlobalStateInner

Utilities for initialization and ID generation

pub fn new(
    tracked_pointer_tags: FxHashSet<SbTag>,
    tracked_call_ids: FxHashSet<CallId>,
    retag_fields: bool
) -> Self

fn new_ptr(&mut self) -> SbTag

Generates a new pointer tag. Remember to also check track_pointer_tags and log its creation!

pub fn new_frame(&mut self) -> FrameExtra

pub fn end_call(&mut self, frame: &FrameData<'_>)

pub fn base_ptr_tag(&mut self, id: AllocId) -> SbTag

Trait Implementations

impl Debug for GlobalStateInner

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

Formats the value using the given formatter.

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: 152 bytes