Enum rustc_middle::mir::interpret::GlobalAlloc

source ·

pub enum GlobalAlloc<'tcx> {
    Function(Instance<'tcx>),
    VTable(Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>),
    Static(DefId),
    Memory(ConstAllocation<'tcx>),
}

Expand description

An allocation in the global (tcx-managed) memory can be either a function pointer, a static, or a “real” allocation with some data in it.

Variants

`Function(Instance<'tcx>)`

The alloc ID is used as a function pointer.

`VTable(Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)`

This alloc ID points to a symbolic (not-reified) vtable.

`Static(DefId)`

The alloc ID points to a “lazy” static variable that did not get computed (yet). This is also used to break the cycle in recursive statics.

`Memory(ConstAllocation<'tcx>)`

The alloc ID points to memory.

Implementations

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impl<'tcx> GlobalAlloc<'tcx>

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pub fn unwrap_memory(&self) -> ConstAllocation<'tcx>

Panics if the GlobalAlloc does not refer to an GlobalAlloc::Memory

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pub fn unwrap_fn(&self) -> Instance<'tcx>

Panics if the GlobalAlloc is not GlobalAlloc::Function

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pub fn unwrap_vtable(&self) -> (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)

Panics if the GlobalAlloc is not GlobalAlloc::VTable

Trait Implementations

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impl<'tcx> Clone for GlobalAlloc<'tcx>

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fn clone(&self) -> GlobalAlloc<'tcx>

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<'tcx> Debug for GlobalAlloc<'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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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more

1.3.0 · source

fn hash_slice<H>(data: &[Self], state: &mut H)where
H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

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impl<'tcx, 'ctx> HashStable<StableHashingContext<'ctx>> for GlobalAlloc<'tcx>

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fn hash_stable(
 &self,
 hcx: &mut StableHashingContext<'ctx>,
 __hasher: &mut StableHasher
)

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impl<'tcx> PartialEq<GlobalAlloc<'tcx>> for GlobalAlloc<'tcx>

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fn eq(&self, other: &GlobalAlloc<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

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impl<'tcx> Eq for GlobalAlloc<'tcx>

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impl<'tcx> StructuralEq for GlobalAlloc<'tcx>

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impl<'tcx> StructuralPartialEq for GlobalAlloc<'tcx>

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for GlobalAlloc<'tcx>

impl<'tcx> Send for GlobalAlloc<'tcx>

impl<'tcx> Sync for GlobalAlloc<'tcx>

impl<'tcx> Unpin for GlobalAlloc<'tcx>

impl<'tcx> !UnwindSafe for GlobalAlloc<'tcx>

Blanket Implementations

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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default fn fingerprint_style() -> FingerprintStyle

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default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous). Read more

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default fn to_debug_str(&self, Ctxt) -> String

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default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, R> InternIteratorElement<T, R> for T

type Output = R

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fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

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> MaybeResult<T> for T

type Error = !

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fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> ToOwned for Twhere
T: Clone,

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 for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

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default fn from_cycle_error(tcx: CTX) -> T

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impl<'a, T> Captures<'a> for Twhere
T: ?Sized,

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: 40 bytes

Size for each variant:

Function: 36 bytes
VTable: 36 bytes
Static: 8 bytes
Memory: 12 bytes

Enum rustc_middle::mir::interpret::GlobalAlloc

Variants

Function(Instance<'tcx>)

VTable(Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)

Static(DefId)

Memory(ConstAllocation<'tcx>)

Implementations

impl<'tcx> GlobalAlloc<'tcx>

pub fn unwrap_memory(&self) -> ConstAllocation<'tcx>

pub fn unwrap_fn(&self) -> Instance<'tcx>

pub fn unwrap_vtable(&self) -> (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)

Trait Implementations

impl<'tcx> Clone for GlobalAlloc<'tcx>

fn clone(&self) -> GlobalAlloc<'tcx>

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

impl<'tcx> Debug for GlobalAlloc<'tcx>

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

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for GlobalAlloc<'tcx>

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for GlobalAlloc<'tcx>

fn encode(&self, __encoder: &mut __E)

impl<'tcx> Hash for GlobalAlloc<'tcx>

fn hash<__H: Hasher>(&self, state: &mut __H)

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher,

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for GlobalAlloc<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher)

impl<'tcx> PartialEq<GlobalAlloc<'tcx>> for GlobalAlloc<'tcx>

fn eq(&self, other: &GlobalAlloc<'tcx>) -> bool

fn ne(&self, other: &Rhs) -> bool

impl<'tcx> Eq for GlobalAlloc<'tcx>

impl<'tcx> StructuralEq for GlobalAlloc<'tcx>

impl<'tcx> StructuralPartialEq for GlobalAlloc<'tcx>

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for GlobalAlloc<'tcx>

impl<'tcx> Send for GlobalAlloc<'tcx>

impl<'tcx> Sync for GlobalAlloc<'tcx>

impl<'tcx> Unpin for GlobalAlloc<'tcx>

impl<'tcx> !UnwindSafe for GlobalAlloc<'tcx>

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere Ctxt: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

default fn fingerprint_style() -> FingerprintStyle

default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

default fn to_debug_str(&self, Ctxt) -> String

default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, R> InternIteratorElement<T, R> for T

type Output = R

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> MaybeResult<T> for T

type Error = !

fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<CTX, T> Value<CTX> for Twhere CTX: DepContext,

default fn from_cycle_error(tcx: CTX) -> T

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout

`Function(Instance<'tcx>)`

`VTable(Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)`

`Static(DefId)`

`Memory(ConstAllocation<'tcx>)`

impl<'tcx, D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<D> for GlobalAlloc<'tcx>

fn decode(decoder: &mut D) -> Self

impl<'tcx, E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<E> for GlobalAlloc<'tcx>

fn encode(&self, encoder: &mut E)

fn hash<H: Hasher>(&self, state: &mut H)

fn hash_slice<H>(data: &[Self], state: &mut H)where
H: Hasher,

impl<'tcx, 'ctx> HashStable<StableHashingContext<'ctx>> for GlobalAlloc<'tcx>

fn hash_stable(
&self,
hcx: &mut StableHashingContext<'ctx>,
__hasher: &mut StableHasher
)

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

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,