Struct composable_allocators::fallbacked::Fallbacked

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pub struct Fallbacked<A: Fallbackable, Fallback: Allocator>(pub A, pub Fallback);

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§0: A§1: Fallback

Trait Implementations§

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impl<A: Fallbackable, Fallback: Allocator> Allocator for Fallbacked<A, Fallback>

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fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)
Attempts to allocate a block of memory. Read more
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fn allocate_zeroed(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)
Behaves like allocate, but also ensures that the returned memory is zero-initialized. Read more
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unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout)

🔬This is a nightly-only experimental API. (allocator_api)
Deallocates the memory referenced by ptr. Read more
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unsafe fn grow( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)
Attempts to extend the memory block. Read more
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unsafe fn grow_zeroed( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)
Behaves like grow, but also ensures that the new contents are set to zero before being returned. Read more
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unsafe fn shrink( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)
Attempts to shrink the memory block. Read more
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fn by_ref(&self) -> &Self
where Self: Sized,

🔬This is a nightly-only experimental API. (allocator_api)
Creates a “by reference” adapter for this instance of Allocator. Read more
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impl<A: Fallbackable, Fallback: Fallbackable> Fallbackable for Fallbacked<A, Fallback>

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unsafe fn has_allocated(&self, ptr: NonNull<u8>, layout: Layout) -> bool

Safety Read more
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fn allows_fallback(&self, layout: Layout) -> bool

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impl<A: NonUnwinding + Fallbackable, Fallback: NonUnwinding> NonUnwinding for Fallbacked<A, Fallback>

Auto Trait Implementations§

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impl<A, Fallback> Freeze for Fallbacked<A, Fallback>
where A: Freeze, Fallback: Freeze,

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impl<A, Fallback> RefUnwindSafe for Fallbacked<A, Fallback>
where A: RefUnwindSafe, Fallback: RefUnwindSafe,

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impl<A, Fallback> Send for Fallbacked<A, Fallback>
where A: Send, Fallback: Send,

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impl<A, Fallback> Sync for Fallbacked<A, Fallback>
where A: Sync, Fallback: Sync,

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impl<A, Fallback> Unpin for Fallbacked<A, Fallback>
where A: Unpin, Fallback: Unpin,

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impl<A, Fallback> UnwindSafe for Fallbacked<A, Fallback>
where A: UnwindSafe, Fallback: UnwindSafe,

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.