Struct fixed_typed_arena::Arena

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pub struct Arena<T, const CHUNK_SIZE: usize>(_);

Expand description

An arena that allocates items of type T in non-amortized O(1) (constant) time.

The arena allocates fixed-size chunks of memory, each able to hold up to CHUNK_SIZE items. All items are allocated on the heap.

Panics

The arena may panic when created or used if mem::size_of::<T>() times CHUNK_SIZE is greater than usize::MAX.

Implementations

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impl<T, const CHUNK_SIZE: usize> Arena<T, CHUNK_SIZE>

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pub fn new() -> Self

Creates a new Arena.

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pub fn alloc(&self, value: T) -> &mut T

Allocates a new item in the arena and initializes it with value. Returns a reference to the allocated item.

Trait Implementations

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impl<T, const CHUNK_SIZE: usize> Default for Arena<T, CHUNK_SIZE>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations

impl<T, const CHUNK_SIZE: usize> !RefUnwindSafe for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Send for Arena<T, CHUNK_SIZE> where
T: Send,

impl<T, const CHUNK_SIZE: usize> !Sync for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Unpin for Arena<T, CHUNK_SIZE> where
T: Unpin,

impl<T, const CHUNK_SIZE: usize> UnwindSafe for Arena<T, CHUNK_SIZE> where
T: UnwindSafe + RefUnwindSafe,

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,

const: unstable · source

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,

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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 for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct fixed_typed_arena::Arena

Panics

Implementations

impl<T, const CHUNK_SIZE: usize> Arena<T, CHUNK_SIZE>

pub fn new() -> Self

pub fn alloc(&self, value: T) -> &mut T

Trait Implementations

impl<T, const CHUNK_SIZE: usize> Default for Arena<T, CHUNK_SIZE>

fn default() -> Self

Auto Trait Implementations

impl<T, const CHUNK_SIZE: usize> !RefUnwindSafe for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Send for Arena<T, CHUNK_SIZE> where
T: Send,

impl<T, const CHUNK_SIZE: usize> !Sync for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Unpin for Arena<T, CHUNK_SIZE> where
T: Unpin,

impl<T, const CHUNK_SIZE: usize> UnwindSafe for Arena<T, CHUNK_SIZE> where
T: UnwindSafe + RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct fixed_typed_arena::Arena

Panics

Implementations

impl<T, const CHUNK_SIZE: usize> Arena<T, CHUNK_SIZE>

pub fn new() -> Self

pub fn alloc(&self, value: T) -> &mut T

Trait Implementations

impl<T, const CHUNK_SIZE: usize> Default for Arena<T, CHUNK_SIZE>

fn default() -> Self

Auto Trait Implementations

impl<T, const CHUNK_SIZE: usize> !RefUnwindSafe for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Send for Arena<T, CHUNK_SIZE> where T: Send,

impl<T, const CHUNK_SIZE: usize> !Sync for Arena<T, CHUNK_SIZE>

impl<T, const CHUNK_SIZE: usize> Unpin for Arena<T, CHUNK_SIZE> where T: Unpin,

impl<T, const CHUNK_SIZE: usize> UnwindSafe for Arena<T, CHUNK_SIZE> where T: UnwindSafe + RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T, const CHUNK_SIZE: usize> Send for Arena<T, CHUNK_SIZE> where
T: Send,

impl<T, const CHUNK_SIZE: usize> Unpin for Arena<T, CHUNK_SIZE> where
T: Unpin,

impl<T, const CHUNK_SIZE: usize> UnwindSafe for Arena<T, CHUNK_SIZE> where
T: UnwindSafe + RefUnwindSafe,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,