AllocExtra in miri::machine - Rust
Description: Extra per-allocation data

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## AllocExtra

# Struct AllocExtra

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    pub struct AllocExtra<'tcx> {
        pub borrow_tracker: Option<AllocState>,
        pub data_race: AllocDataRaceHandler,
        pub backtrace: Option<Vec<FrameInfo<'tcx>>>,
        pub sync_objs: BTreeMap<Size, Box<dyn SyncObj>>,
    }

Expand description

Extra per-allocation data

## Fields§

§`borrow_tracker: Option<AllocState>`

Global state of the borrow tracker, if enabled.

§`data_race: AllocDataRaceHandler`

Extra state for data race detection.

Invariant: The enum variant must match the enum variant in the `data_race` field on `MiriMachine`

§`backtrace: Option<Vec<FrameInfo<'tcx>>>`

A backtrace to where this allocation was allocated. As this is recorded for leak reports, it only exists if this allocation is leakable. The backtrace is not pruned yet; that should be done before printing it.

§`sync_objs: BTreeMap<Size, Box<dyn SyncObj>>`

Synchronization objects like to attach extra data to particular addresses. We store that inside the relevant allocation, to ensure that everything is removed when the allocation is freed. This maps offsets to synchronization-primitive-specific data.

## Implementations§

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### impl AllocExtra<'_>

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#### pub fn borrow_tracker_sb(&self) -> &RefCell<Stacks>

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#### pub fn borrow_tracker_sb_mut(&mut self) -> &mut RefCell<Stacks>

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#### pub fn borrow_tracker_tb(&self) -> &RefCell<Tree>

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### impl<'tcx> AllocExtra<'tcx>

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#### fn get_sync<T: 'static>(&self, offset: Size) -> Option<&T>

## Trait Implementations§

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### impl<'tcx> Clone for AllocExtra<'tcx>

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#### fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl<'tcx> Debug for AllocExtra<'tcx>

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

Formats the value using the given formatter. Read more
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### impl VisitProvenance for AllocExtra<'_>

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#### fn visit_provenance(&self, visit: &mut VisitWith<'_>)

## Auto Trait Implementations§

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### impl<'tcx> !Freeze for AllocExtra<'tcx>

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### impl<'tcx> !RefUnwindSafe for AllocExtra<'tcx>

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### impl<'tcx> !Send for AllocExtra<'tcx>

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### impl<'tcx> !Sync for AllocExtra<'tcx>

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### impl<'tcx> Unpin for AllocExtra<'tcx>

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### impl<'tcx> UnsafeUnpin for AllocExtra<'tcx>

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### impl<'tcx> !UnwindSafe for AllocExtra<'tcx>

## Blanket Implementations§

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

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

## 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: 136 bytes