Struct BumpAllocator

pub struct BumpAllocator {
    inner: SingleThreaded<RefCell<Inner>>,
}

Fields

inner: SingleThreaded<RefCell<Inner>>

Implementations

impl BumpAllocator

pub const fn new() -> Self

pub unsafe fn init(&self, mem: MemoryRange)

Initialize the bump allocator with the specified memory range.

Safety

The caller must guarantee that the memory range is both valid to access via the current pagetable identity map, and that it is unused.

pub fn enable_alloc(&self)

Enable allocations. This panics if allocations were ever previously enabled.

pub fn disable_alloc(&self)

Disable allocations. Panics if the allocator was not previously enabled.

pub fn log_stats(&self)

Trait Implementations

impl GlobalAlloc for BumpAllocator

unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.