Struct Allocator

pub struct Allocator<A> { /* private fields */ }

Tracking allocator implementation.

This allocator must be installed via #[global_allocator] in order to take effect. More information on using this allocator can be found in the examples, or directly in the standard library docs for GlobalAlloc.

Implementations

impl<A> Allocator<A>

pub const fn from_allocator(allocator: A) -> Self

Creates a new Allocator that wraps another allocator.

impl Allocator<System>

pub const fn system() -> Allocator<System>

Creates a new Allocator that wraps the system allocator.

Trait Implementations

impl Default for Allocator<System>

fn default() -> Self

Returns the “default value” for a type.

impl<A: GlobalAlloc> GlobalAlloc for Allocator<A>

unsafe fn alloc(&self, object_layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, object_ptr: *mut u8, object_layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.