Struct MmapBox

pub struct MmapBox<T> { /* private fields */ }

Analogous to alloc::boxed::Box, but directly uses mmap instead of a global allocator.

Useful since we don’t currently have a global allocator in the shim, and probably don’t want to install one that makes direct mmap calls for every allocation, since that would be a performance footgun.

We should be able to replace this with alloc::boxed::Box<T> if and when we implement a global allocator suitable for the shim. (Or with alloc::boxed::Box<T, MmapAllocator> when non-global allocators are stabilized)

Implementations

impl<T> MmapBox<T>

pub fn new(x: T) -> Self

pub fn leak(this: MmapBox<T>) -> *mut T

Trait Implementations

impl<T> Deref for MmapBox<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for MmapBox<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T> Drop for MmapBox<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T> Send for MmapBox<T>

where T: Send,

impl<T> Sync for MmapBox<T>

where T: Sync,