Struct BootInfoFrameAllocator

pub struct BootInfoFrameAllocator { /* private fields */ }

A frame allocator that uses the bootloader’s memory map to allocate usable memory frames.

This allocator is initialized with the memory map provided by the bootloader and iterates over the usable memory regions to allocate physical memory frames. It only returns frames from memory regions marked as “Usable.”

Implementations

impl BootInfoFrameAllocator

pub unsafe fn init(memory_map: &'static MemoryMap) -> Self

Initializes the BootInfoFrameAllocator from the bootloader-provided memory map.

This function sets up the allocator to iterate over the usable regions in the memory map.

Arguments

• memory_map - The memory map provided by the bootloader, detailing the memory regions.

Safety

This function is unsafe because it relies on the structure and validity of the memory map.

Trait Implementations

impl FrameAllocator<Size4KiB> for BootInfoFrameAllocator

Allocates memory frames from the usable regions of physical memory.

This implementation of FrameAllocator uses the bootloader’s memory map to allocate usable memory frames for the kernel.

fn allocate_frame(&mut self) -> Option<PhysFrame>

Allocate a frame of the appropriate size and return it if possible.