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§
source§impl<'tcx> GlobalAlloc<'tcx>
impl<'tcx> GlobalAlloc<'tcx>
sourcepub fn unwrap_memory(&self) -> ConstAllocation<'tcx>
pub fn unwrap_memory(&self) -> ConstAllocation<'tcx>
Panics if the GlobalAlloc
does not refer to an GlobalAlloc::Memory
sourcepub fn unwrap_fn(&self) -> Instance<'tcx>
pub fn unwrap_fn(&self) -> Instance<'tcx>
Panics if the GlobalAlloc
is not GlobalAlloc::Function
sourcepub fn unwrap_vtable(&self) -> (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)
pub fn unwrap_vtable(&self) -> (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>)
Panics if the GlobalAlloc
is not GlobalAlloc::VTable
Trait Implementations§
source§impl<'tcx> Clone for GlobalAlloc<'tcx>
impl<'tcx> Clone for GlobalAlloc<'tcx>
source§fn clone(&self) -> GlobalAlloc<'tcx>
fn clone(&self) -> GlobalAlloc<'tcx>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<'tcx> Debug for GlobalAlloc<'tcx>
impl<'tcx> Debug for GlobalAlloc<'tcx>
source§impl<'tcx> Hash for GlobalAlloc<'tcx>
impl<'tcx> Hash for GlobalAlloc<'tcx>
source§impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for GlobalAlloc<'tcx>
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for GlobalAlloc<'tcx>
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
source§impl<'tcx> PartialEq<GlobalAlloc<'tcx>> for GlobalAlloc<'tcx>
impl<'tcx> PartialEq<GlobalAlloc<'tcx>> for GlobalAlloc<'tcx>
source§fn eq(&self, other: &GlobalAlloc<'tcx>) -> bool
fn eq(&self, other: &GlobalAlloc<'tcx>) -> 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§
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(
_: Tcx,
_: &DepNode<<Tcx as DepContext>::DepKind>
) -> Option<T>
default fn recover(
_: Tcx,
_: &DepNode<<Tcx as DepContext>::DepKind>
) -> Option<T>
DepNode
,
something which is needed when forcing DepNode
s 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 moresource§impl<T, R> InternIteratorElement<T, R> for 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,
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error(tcx: Tcx, _: &[QueryInfo]) -> T
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 bytesVTable
: 36 bytesStatic
: 8 bytesMemory
: 12 bytes