Struct zerogc_simple::layout::HeaderLayout

pub struct HeaderLayout<H> {
    pub header_size: usize,
    pub common_header_offset: usize,
    // some fields omitted
}

The layout of an object’s header

Fields

header_size: usize

The overall size of the header

common_header_offset: usize

The offset of the ‘common’ header, starting from the start of the real header

Implementations

impl<H> HeaderLayout<H>

pub const ALIGN: usize

The alignment of the header

NOTE: All headers have the same alignment

pub const unsafe fn from_value_ptr<T: ?Sized>(self, ptr: *mut T) -> *mut H

Get the header from the specified value pointer

pub const fn layout(&self) -> Layout

Get the in-memory layout of the header (doesn’t include the value)

pub const fn value_offset(&self, align: usize) -> usize

Get the offset of the value from the start of the header, given the alignment of its value

Trait Implementations

impl<H> Clone for HeaderLayout<H>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<H: Debug> Debug for HeaderLayout<H>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<H> Copy for HeaderLayout<H>