Trait AllocatorOps 

pub trait AllocatorOps {
    // Required methods
    fn name(&self) -> &'static str;
    fn init(&self, start_vaddr: usize, size: usize) -> AllocResult;
    fn add_memory(&self, start_vaddr: usize, size: usize) -> AllocResult;
    fn alloc(&self, layout: Layout) -> AllocResult<NonNull<u8>>;
    fn dealloc(&self, pos: NonNull<u8>, layout: Layout);
    fn alloc_pages(
        &self,
        num_pages: usize,
        align: usize,
        kind: UsageKind,
    ) -> AllocResult<usize>;
    fn alloc_dma32_pages(
        &self,
        num_pages: usize,
        align: usize,
        kind: UsageKind,
    ) -> AllocResult<usize>;
    fn alloc_pages_at(
        &self,
        start: usize,
        num_pages: usize,
        align: usize,
        kind: UsageKind,
    ) -> AllocResult<usize>;
    fn dealloc_pages(&self, pos: usize, num_pages: usize, kind: UsageKind);
    fn used_bytes(&self) -> usize;
    fn available_bytes(&self) -> usize;
    fn used_pages(&self) -> usize;
    fn available_pages(&self) -> usize;
    fn usages(&self) -> Usages;
}

Unified allocator operations provided by all ax-alloc backends.

Required Methods

fn name(&self) -> &'static str

Returns the allocator name.

fn init(&self, start_vaddr: usize, size: usize) -> AllocResult

Initializes the allocator with the given region.

fn add_memory(&self, start_vaddr: usize, size: usize) -> AllocResult

Adds an extra memory region to the allocator.

fn alloc(&self, layout: Layout) -> AllocResult<NonNull<u8>>

Allocates arbitrary bytes.

fn dealloc(&self, pos: NonNull<u8>, layout: Layout)

Deallocates a prior byte allocation.

fn alloc_pages( &self, num_pages: usize, align: usize, kind: UsageKind, ) -> AllocResult<usize>

Allocates contiguous pages.

align is the requested byte alignment, not a log2/exponent. It must be a power-of-two byte alignment accepted by the backend page allocator.

fn alloc_dma32_pages( &self, num_pages: usize, align: usize, kind: UsageKind, ) -> AllocResult<usize>

Allocates contiguous DMA32 pages.

align is the requested byte alignment, not a log2/exponent. It must be a power-of-two byte alignment accepted by the backend page allocator.

fn alloc_pages_at( &self, start: usize, num_pages: usize, align: usize, kind: UsageKind, ) -> AllocResult<usize>

Allocates contiguous pages starting from the given address.

align is the requested byte alignment, not a log2/exponent. It must be a power-of-two byte alignment accepted by the backend page allocator.

fn dealloc_pages(&self, pos: usize, num_pages: usize, kind: UsageKind)

Deallocates a prior page allocation.

fn used_bytes(&self) -> usize

Returns used byte count.

fn available_bytes(&self) -> usize

Returns available byte count.

fn used_pages(&self) -> usize

Returns used page count.

fn available_pages(&self) -> usize

Returns available page count.

fn usages(&self) -> Usages

Returns usage statistics.

Implementors

impl AllocatorOps for GlobalAllocator