Module alloc

TODO: document alloc module.

Re-exports

pub use self::layout::Layout;

Modules

heap

A simple heap based on a buddy allocator. For the theory of buddy allocators, see https://en.wikipedia.org/wiki/Buddy_memory_allocation or https://www.memorymanagement.org/mmref/alloc.html#buddy-system

layout

Implements a simple memory layout structure.

paging

Implements two memory allocators: a Buddy Allocator and a Best-Fit Allocator, respectively referred to as [BUDDY_ALLOCATOR][crate::alloc::paging::BUDDY_ALLOCATOR] and [FIT_ALLOCATOR][crate::alloc::paging::FIT_ALLOCATOR].

Structs

AllocationError

GlobalAllocator

A global allocator for our program.

LockedAllocator

A simple wrapper around spin::Mutex to enable trait implementations.

Statics

GLOBAL

Traits

Allocator

Functions

__rust_allocate

Allocates a chunk of memory.

__rust_deallocate

Frees a chunk of memory.

__rust_reallocate

Reallocates a chunk of memory.

__rust_reallocate_inplace

We do not support in-place reallocation, so just return oldSize.

__rust_usable_size

I have no idea what this actually does, but we’re supposed to have one, and the other backends to implement it as something equivalent to the following.

allocate^⚠

Performs a single heap allocation, like malloc. Uses the size and align of T for the memory layout.

allocate_array^⚠

Allocates an array of size size.