Update to 0.9.0. am: 79e515e284

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/buddy_system_allocator/+/2354803

Change-Id: I05d79dfdd4046bdb806c6c5e4f66c8075fc90d12
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 08878797e68fed002b5b335b7a064a389455043c
  1. .github/
  2. benches/
  3. patches/
  4. src/
  5. .cargo_vcs_info.json
  6. .gitignore
  7. Android.bp
  8. Cargo.toml
  9. Cargo.toml.orig
  10. cargo2android.json
  11. LICENSE
  12. METADATA
  13. MODULE_LICENSE_MIT
  14. OWNERS
  15. README.md
  16. TEST_MAPPING
README.md

buddy_system_allocator

Crates.io version docs.rs

An (almost) drop-in replacement for phil-opp/linked-list-allocator. But it uses buddy system instead.

Usage

To use buddy_system_allocator for global allocator:

use buddy_system_allocator::LockedHeap;

#[global_allocator]
static HEAP_ALLOCATOR: LockedHeap = LockedHeap::<32>::empty();

To init the allocator:

unsafe {
    HEAP_ALLOCATOR.lock().init(heap_start, heap_size);
    // or
    HEAP_ALLOCATOR.lock().add_to_heap(heap_start, heap_end);
}

You can also use FrameAllocator and LockedHeapWithRescue, see their documentation for usage.

Features

  • use_spin (default): Provide a LockedHeap type that implements the GlobalAlloc trait by using a spinlock.
  • const_fn (nightly only): Provide const fn version of LockedHeapWithRescue::new.

License

Some code comes from phil-opp's linked-list-allocator.

Licensed under MIT License. Thanks phill-opp's linked-list-allocator for inspirations and interface.