MemoryGuard

Struct MemoryGuard 

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

Prevents memory capacity from being released while the guard is alive.

Call BytesView::extend_lifetime() or BytesBuf::extend_lifetime() to obtain an instance.

The memory may be used for any otherwise legal purpose; all this guard does is act as a shadow reference to some memory capacity.

This can be useful when executing unsafe logic, where there may not otherwise exist any Rust objects holding references to memory capacity in use (e.g. because the code operating on the capacity is not even Rust code).

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impl Debug for MemoryGuard

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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 Default for MemoryGuard

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fn default() -> Self

Creates a memory guard that does not guard any memory capacity.

Useless for real logic but potentially meaningful as a placeholder in tests.

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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> 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, 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.