pub struct CounterId {
private_use_as_methods_instead: u32,
}
Expand description
ID of a coverage counter. Values ascend from 0.
Before MIR inlining, counter IDs are local to their enclosing function. After MIR inlining, coverage statements may have been inlined into another function, so use the statement’s source-scope to find which function/instance its IDs are meaningful for.
Note that LLVM handles counter IDs as uint32_t
, so there is no need
to use a larger representation on the Rust side.
Fields§
§private_use_as_methods_instead: u32
Implementations§
Source§impl CounterId
impl CounterId
Sourcepub const MAX_AS_U32: u32 = 4_294_967_295u32
pub const MAX_AS_U32: u32 = 4_294_967_295u32
Maximum value the index can take, as a u32
.
Sourcepub const fn from_usize(value: usize) -> Self
pub const fn from_usize(value: usize) -> Self
Sourcepub const unsafe fn from_u32_unchecked(value: u32) -> Self
pub const unsafe fn from_u32_unchecked(value: u32) -> Self
Creates a new index from a given u32
.
§Safety
The provided value must be less than or equal to the maximum value for the newtype. Providing a value outside this range is undefined due to layout restrictions.
Prefer using from_u32
.
Trait Implementations§
Source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for CounterId
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for CounterId
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )
Source§impl Ord for CounterId
impl Ord for CounterId
Source§impl PartialOrd for CounterId
impl PartialOrd for CounterId
Source§impl Step for CounterId
impl Step for CounterId
Source§fn steps_between(start: &Self, end: &Self) -> Option<usize>
fn steps_between(start: &Self, end: &Self) -> Option<usize>
step_trait
)Source§fn forward_checked(start: Self, u: usize) -> Option<Self>
fn forward_checked(start: Self, u: usize) -> Option<Self>
step_trait
)Source§fn backward_checked(start: Self, u: usize) -> Option<Self>
fn backward_checked(start: Self, u: usize) -> Option<Self>
step_trait
)Source§fn forward(start: Self, count: usize) -> Self
fn forward(start: Self, count: usize) -> Self
step_trait
)Source§unsafe fn forward_unchecked(start: Self, count: usize) -> Self
unsafe fn forward_unchecked(start: Self, count: usize) -> Self
step_trait
)Source§fn backward(start: Self, count: usize) -> Self
fn backward(start: Self, count: usize) -> Self
step_trait
)Source§unsafe fn backward_unchecked(start: Self, count: usize) -> Self
unsafe fn backward_unchecked(start: Self, count: usize) -> Self
step_trait
)Source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for CounterId
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for CounterId
Source§fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
_: &mut F,
) -> Result<Self, F::Error>
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, _: &mut F, ) -> Result<Self, F::Error>
Source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for CounterId
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for CounterId
Source§fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
impl Copy for CounterId
impl Eq for CounterId
impl StructuralPartialEq for CounterId
Auto Trait Implementations§
impl DynSend for CounterId
impl DynSync for CounterId
impl Freeze for CounterId
impl RefUnwindSafe for CounterId
impl Send for CounterId
impl Sync for CounterId
impl Unpin for CounterId
impl UnwindSafe for CounterId
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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]
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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
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Size: 4 bytes