OpaqueMemory

Struct OpaqueMemory 

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pub struct OpaqueMemory { /* private fields */ }
Expand description

Adapter to erase the type of a MemoryShared implementation.

This adapter adds some inefficiency due to additional indirection overhead for every memory reservation, so avoid this adapter if you can tolerate alternatives (generics).

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impl OpaqueMemory

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pub fn new(inner: impl MemoryShared) -> Self

Creates a new instance of the adapter.

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pub fn reserve(&self, min_bytes: usize) -> BytesBuf

Reserves at least min_bytes bytes of memory capacity.

Returns an empty BytesBuf that can be used to fill the reserved memory with data.

The memory provider may provide more memory than requested.

The memory reservation request will always be fulfilled, obtaining more memory from the operating system if necessary.

§Zero-sized reservations

Reserving zero bytes of memory is a valid operation and will return a BytesBuf with zero or more bytes of capacity.

§Panics

May panic if the operating system runs out of memory.

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impl Clone for OpaqueMemory

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fn clone(&self) -> OpaqueMemory

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for OpaqueMemory

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Memory for OpaqueMemory

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fn reserve(&self, min_bytes: usize) -> BytesBuf

Reserves at least min_bytes bytes of memory capacity. Read more

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> MemoryShared for T
where T: Memory + Send + Sync + 'static,