Crate acid_alloc
source · [−]Expand description
Bare-metal allocators.
This crate provides allocators that are suitable for use on bare metal or with low-level
allocation facilities like mmap(2)/brk(2).
Allocators
The following allocators are available:
Buddy, a binary-buddy allocator. O(log2levels) worst-case allocation and deallocation. Supports splitting and coalescing blocks by powers of 2. Good choice for periodic medium-to-large allocations.Bump, a bump allocator. O(1) allocation. Extremely fast to allocate and flexible in terms of allocation layout, but unable to deallocate individual items. Good choice for allocations that will never be deallocated or that will be deallocated en masse.Slab, a slab allocator. O(1) allocation and deallocation. All allocated blocks are the same size, making this allocator a good choice when allocating many similarly-sized objects.
Features
All allocators provided by this crate are available in a #![no_std],
#![cfg(no_global_oom_handling)] environment. Additional functionality is available when
enabling feature flags:
| Flag | Default? | Requires nightly? | Description |
|---|---|---|---|
sptr |
Yes | No |
Uses the sptr polyfill for Strict Provenance.
|
unstable |
No | Yes |
Exposes constructors for allocators backed by implementors of the
unstable Allocator trait, and enables the internal use of
nightly-only Rust features. Obviates sptr.
|
alloc |
No | No | Exposes constructors for allocators backed by the global allocator. |
Modules
Structs
The AllocError error indicates an allocation failure
that may be due to resource exhaustion or to
something wrong when combining the given input arguments with this
allocator.
A binary-buddy allocator.
A bump allocator.
The global memory allocator.
A marker type indicating that an allocator is backed by raw pointers.
A slab allocator.
Enums
The error type for allocator constructors.
Traits
Types which provide memory which backs an allocator.