pub struct WasmRef<'a, T: ValueType> { /* private fields */ }
Expand description
Reference to a value in Wasm memory.
The type of the value must satisfy the requirements of the ValueType
trait which guarantees that reading and writing such a value to untrusted
memory is safe.
The address is not required to be aligned: unaligned accesses are fully supported.
This wrapper safely handles concurrent modifications of the data by another thread.
Implementations
sourceimpl<'a, T: ValueType> WasmRef<'a, T>
impl<'a, T: ValueType> WasmRef<'a, T>
sourcepub fn new(view: &'a MemoryView<'_>, offset: u64) -> Self
pub fn new(view: &'a MemoryView<'_>, offset: u64) -> Self
Creates a new WasmRef
at the given offset in a memory.
sourcepub fn as_ptr<M: MemorySize>(self) -> WasmPtr<T, M>
pub fn as_ptr<M: MemorySize>(self) -> WasmPtr<T, M>
Get a WasmPtr
fror this WasmRef
.
sourcepub fn read(self) -> Result<T, MemoryAccessError>
pub fn read(self) -> Result<T, MemoryAccessError>
Reads the location pointed to by this WasmRef
.
sourcepub fn write(self, val: T) -> Result<(), MemoryAccessError>
pub fn write(self, val: T) -> Result<(), MemoryAccessError>
Writes to the location pointed to by this WasmRef
.
Trait Implementations
impl<'a, T: Copy + ValueType> Copy for WasmRef<'a, T>
Auto Trait Implementations
impl<'a, T> !RefUnwindSafe for WasmRef<'a, T>
impl<'a, T> !Send for WasmRef<'a, T>
impl<'a, T> !Sync for WasmRef<'a, T>
impl<'a, T> Unpin for WasmRef<'a, T>
impl<'a, T> !UnwindSafe for WasmRef<'a, T>
Blanket Implementations
impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
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.
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
Deserializes using the given deserializer
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
impl<T> Pointable for T
impl<T> Pointable for T
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more