[][src]Struct rustc_arena::TypedArena

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

An arena that can hold objects of only one type.


ptr: Cell<*mut T>

A pointer to the next object to be allocated.

end: Cell<*mut T>

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

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

A vector of arena chunks.

_own: PhantomData<T>

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


impl<T> TypedArena<T>[src]

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

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

fn can_allocate(&self, additional: usize) -> bool[src]

fn ensure_capacity(&self, additional: usize)[src]

Ensures there's enough space in the current chunk to fit len objects.

unsafe fn alloc_raw_slice(&self, len: usize) -> *mut T[src]

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

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.


  • Zero-sized types
  • Zero-length slices

pub fn alloc_from_iter<I: IntoIterator<Item = T>>(&self, iter: I) -> &mut [T][src]

fn grow(&self, additional: usize)[src]

Grows the arena.

pub fn clear(&mut self)[src]

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

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

Trait Implementations

impl<T> Default for TypedArena<T>[src]

fn default() -> TypedArena<T>[src]

Creates a new TypedArena.

impl<T> Drop for TypedArena<T>[src]

impl<T: Send> Send for TypedArena<T>[src]

Auto Trait Implementations

impl<T> !RefUnwindSafe for TypedArena<T>

impl<T> !Sync for TypedArena<T>

impl<T> Unpin for TypedArena<T> where
    T: Unpin

impl<T> UnwindSafe for TypedArena<T> where
    T: RefUnwindSafe + UnwindSafe

Blanket Implementations

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> From<T> for T[src]

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

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

type Error = Infallible

The type returned in the event of a conversion error.

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

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

The type returned in the event of a conversion error.