Struct BumpAllocator 

pub struct BumpAllocator {
    pub start: usize,
    pub len: usize,
}

Fields

start: usize

len: usize

Implementations

impl BumpAllocator

pub unsafe fn pos(&self) -> usize

Returns the current position of the heap.

Safety

This function is unsafe because it returns a raw pointer.

pub unsafe fn move_cursor(&self, pos: usize)

Reset heap start cursor to position.

Safety

Do not use this function if you initialized heap memory after pos which you still need.

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, _: *mut u8, _: 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.