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§
source§impl<'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>where
T: RefUnwindSafe,
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>where
T: RefUnwindSafe,
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.
§impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
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