Struct arena::TypedArena

pub struct TypedArena<T> {
    ptr: Cell<*mut T>,
    end: Cell<*mut T>,
    chunks: RefCell<Vec<TypedArenaChunk<T>>>,
    _own: PhantomData<T>,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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An arena that can hold objects of only one type.

Fields

ptr: Cell<*mut T>

🔬 This is a nightly-only experimental API. (rustc_private)

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A pointer to the next object to be allocated.

end: Cell<*mut T>

🔬 This is a nightly-only experimental API. (rustc_private)

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A pointer to the end of the allocated area. When this pointer is reached, a new chunk is allocated.

chunks: RefCell<Vec<TypedArenaChunk<T>>>

🔬 This is a nightly-only experimental API. (rustc_private)

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A vector of arena chunks.

_own: PhantomData<T>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Marker indicating that dropping the arena causes its owned instances of T to be dropped.

Methods

impl<T> TypedArena<T>

pub fn new() -> TypedArena<T>

🔬 This is a nightly-only experimental API. (rustc_private)

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Creates a new TypedArena.

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

🔬 This is a nightly-only experimental API. (rustc_private)

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Allocates an object in the TypedArena, returning a reference to it.

pub fn alloc_slice(&self, slice: &[T]) -> &mut [T] where     T: Copy,

🔬 This is a nightly-only experimental API. (rustc_private)

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Allocates a slice of objects that are copied into the TypedArena, returning a mutable reference to it. Will panic if passed a zero-sized types.

Panics:

• Zero-sized types
• Zero-length slices

fn grow(&self, n: usize)

🔬 This is a nightly-only experimental API. (rustc_private)

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Grows the arena.

pub fn clear(&mut self)

🔬 This is a nightly-only experimental API. (rustc_private)

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Clears the arena. Deallocates all but the longest chunk which may be reused.

fn clear_last_chunk(&self, last_chunk: &mut TypedArenaChunk<T>)

🔬 This is a nightly-only experimental API. (rustc_private)

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Trait Implementations

impl<T> Drop for TypedArena<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: Send> Send for TypedArena<T>