#[repr(u8)]pub enum Advice {
Normal = 0,
Sequential = 1,
Random = 2,
Willneed = 3,
Dontneed = 4,
Noreuse = 5,
Unknown = 255,
}
Expand description
File or memory access pattern advisory information.
Variants§
Normal = 0
The application has no advice to give on its behavior with respect to the specified data.
Sequential = 1
The application expects to access the specified data sequentially from lower offsets to higher offsets.
Random = 2
The application expects to access the specified data in a random order.
Willneed = 3
The application expects to access the specified data in the near future.
Dontneed = 4
The application expects that it will not access the specified data in the near future.
Noreuse = 5
The application expects to access the specified data once and then not reuse it thereafter.
Unknown = 255
The application expectations are unknown.
Trait Implementations§
Source§impl FromToNativeWasmType for Advice
impl FromToNativeWasmType for Advice
Source§fn from_native(n: Self::Native) -> Self
fn from_native(n: Self::Native) -> Self
Source§fn is_from_store(&self, _store: &impl AsStoreRef) -> bool
fn is_from_store(&self, _store: &impl AsStoreRef) -> bool
Returns whether the given value is from the given store. Read more
Source§impl ValueType for Advice
impl ValueType for Advice
Source§fn zero_padding_bytes(&self, _bytes: &mut [MaybeUninit<u8>])
fn zero_padding_bytes(&self, _bytes: &mut [MaybeUninit<u8>])
This method is passed a byte slice which contains the byte
representation of
self
. It must zero out any bytes which are
uninitialized (e.g. padding bytes).impl Copy for Advice
impl Eq for Advice
impl StructuralPartialEq for Advice
Auto Trait Implementations§
impl Freeze for Advice
impl RefUnwindSafe for Advice
impl Send for Advice
impl Sync for Advice
impl Unpin for Advice
impl UnwindSafe for Advice
Blanket Implementations§
Source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
Source§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
Source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
Source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
Source§impl<T> Upcastable for T
impl<T> Upcastable for T
Source§fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
upcast ref
Source§fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
upcast mut ref
Source§impl<A1> WasmTypeList for A1where
A1: FromToNativeWasmType,
impl<A1> WasmTypeList for A1where
A1: FromToNativeWasmType,
Source§type CStruct = S1<A1>
type CStruct = S1<A1>
The C type (a struct) that can hold/represent all the
represented values.
Source§unsafe fn from_array(
_store: &mut impl AsStoreMut,
array: <A1 as WasmTypeList>::Array,
) -> A1
unsafe fn from_array( _store: &mut impl AsStoreMut, array: <A1 as WasmTypeList>::Array, ) -> A1
Constructs
Self
based on an array of values. Read moreSource§unsafe fn from_slice(
store: &mut impl AsStoreMut,
slice: &[RawValue],
) -> Result<A1, TryFromSliceError>
unsafe fn from_slice( store: &mut impl AsStoreMut, slice: &[RawValue], ) -> Result<A1, TryFromSliceError>
Constructs
Self
based on a slice of values. Read moreSource§unsafe fn into_array(
self,
_store: &mut impl AsStoreMut,
) -> <A1 as WasmTypeList>::Array
unsafe fn into_array( self, _store: &mut impl AsStoreMut, ) -> <A1 as WasmTypeList>::Array
Builds and returns an array of type
Array
from a tuple
(list) of values. Read moreSource§fn empty_array() -> <A1 as WasmTypeList>::Array
fn empty_array() -> <A1 as WasmTypeList>::Array
Allocates and return an empty array of type
Array
that
will hold a tuple (list) of values, usually to hold the
returned values of a WebAssembly function call.Source§unsafe fn from_c_struct(
_store: &mut impl AsStoreMut,
c_struct: <A1 as WasmTypeList>::CStruct,
) -> A1
unsafe fn from_c_struct( _store: &mut impl AsStoreMut, c_struct: <A1 as WasmTypeList>::CStruct, ) -> A1
Builds a tuple (list) of values from a C struct of type
CStruct
. Read moreSource§unsafe fn into_c_struct(
self,
_store: &mut impl AsStoreMut,
) -> <A1 as WasmTypeList>::CStruct
unsafe fn into_c_struct( self, _store: &mut impl AsStoreMut, ) -> <A1 as WasmTypeList>::CStruct
Builds and returns a C struct of type
CStruct
from a
tuple (list) of values. Read moreSource§unsafe fn write_c_struct_to_ptr(
c_struct: <A1 as WasmTypeList>::CStruct,
_ptr: *mut RawValue,
)
unsafe fn write_c_struct_to_ptr( c_struct: <A1 as WasmTypeList>::CStruct, _ptr: *mut RawValue, )
Writes the contents of a C struct to an array of
RawValue
. Read moreSource§fn wasm_types() -> &'static [Type]
fn wasm_types() -> &'static [Type]
Get the Wasm types for the tuple (list) of currently
represented values.