Struct HostBytesBackend 

pub struct HostBytesBackend;

Minimal host-resident backend used as the default backend adapter for host-visible byte-slice views in generic helper code.

Trait Implementations

impl Backend for HostBytesBackend

type ScalarBig = i128

Scalar type for extended-precision (big) polynomial representations.

type ScalarPrep = i64

Scalar type for DFT-domain (prepared) polynomial representations.

type OwnedBuf = Vec<u8>

Owned backend storage for layouts and scratch.

type BufRef<'a> = &'a [u8]

Shared borrowed view into backend-owned storage.

type BufMut<'a> = &'a mut [u8]

Mutable borrowed view into backend-owned storage.

type Handle = ()

Opaque backend handle type (e.g. precomputed FFT twiddle factors).

type Location = Host

Residency of this backend’s buffers — Host or Device.

fn alloc_bytes(len: usize) -> <HostBytesBackend as Backend>::OwnedBuf

Allocates a backend-owned byte buffer of len bytes.

fn alloc_zeroed_bytes(len: usize) -> <HostBytesBackend as Backend>::OwnedBuf

Allocates a zero-initialized backend-owned byte buffer of len bytes.

fn from_host_bytes(bytes: &[u8]) -> <HostBytesBackend as Backend>::OwnedBuf

Uploads or copies host bytes into backend-owned storage.

fn from_bytes(bytes: Vec<u8>) -> <HostBytesBackend as Backend>::OwnedBuf

Wraps/Uploads a host-owned byte buffer into backend-owned storage.

fn to_host_bytes(buf: &<HostBytesBackend as Backend>::OwnedBuf) -> Vec<u8>

Copies the contents of a backend-owned buffer into a fresh host Vec<u8>.

fn copy_to_host(buf: &<HostBytesBackend as Backend>::OwnedBuf, dst: &mut [u8])

Copies the contents of a backend-owned buffer into a host byte slice.

fn copy_from_host(buf: &mut <HostBytesBackend as Backend>::OwnedBuf, src: &[u8])

Copies a host byte slice into a backend-owned buffer.

fn len_bytes(buf: &<HostBytesBackend as Backend>::OwnedBuf) -> usize

Returns the number of bytes stored in a backend-owned buffer.

fn view( buf: &<HostBytesBackend as Backend>::OwnedBuf, ) -> <HostBytesBackend as Backend>::BufRef<'_>

Borrows a shared backend-native view over an owned buffer.

fn view_ref<'a, 'b>( buf: &'a <HostBytesBackend as Backend>::BufRef<'b>, ) -> <HostBytesBackend as Backend>::BufRef<'a>

where HostBytesBackend: 'b,

Reborrows an existing shared backend-native view.

fn view_ref_mut<'a, 'b>( buf: &'a <HostBytesBackend as Backend>::BufMut<'b>, ) -> <HostBytesBackend as Backend>::BufRef<'a>

where HostBytesBackend: 'b,

Reborrows a mutable backend-native view as a shared backend-native view.

fn view_mut_ref<'a, 'b>( buf: &'a mut <HostBytesBackend as Backend>::BufMut<'b>, ) -> <HostBytesBackend as Backend>::BufMut<'a>

where HostBytesBackend: 'b,

Reborrows an existing mutable backend-native view.

fn view_mut( buf: &mut <HostBytesBackend as Backend>::OwnedBuf, ) -> <HostBytesBackend as Backend>::BufMut<'_>

Borrows a mutable backend-native view over an owned buffer.

fn region( buf: &<HostBytesBackend as Backend>::OwnedBuf, offset: usize, len: usize, ) -> <HostBytesBackend as Backend>::BufRef<'_>

Borrows a shared sub-region of an owned buffer.

fn region_mut( buf: &mut <HostBytesBackend as Backend>::OwnedBuf, offset: usize, len: usize, ) -> <HostBytesBackend as Backend>::BufMut<'_>

Borrows a mutable sub-region of an owned buffer.

fn region_ref<'a, 'b>( buf: &'a <HostBytesBackend as Backend>::BufRef<'b>, offset: usize, len: usize, ) -> <HostBytesBackend as Backend>::BufRef<'a>

where HostBytesBackend: 'b,

Reborrows a shared sub-region of an existing shared backend-native view.

fn region_ref_mut<'a, 'b>( buf: &'a <HostBytesBackend as Backend>::BufMut<'b>, offset: usize, len: usize, ) -> <HostBytesBackend as Backend>::BufRef<'a>

where HostBytesBackend: 'b,

Reborrows a shared sub-region of an existing mutable backend-native view.

fn region_mut_ref<'a, 'b>( buf: &'a mut <HostBytesBackend as Backend>::BufMut<'b>, offset: usize, len: usize, ) -> <HostBytesBackend as Backend>::BufMut<'a>

where HostBytesBackend: 'b,

Reborrows a mutable sub-region of an existing mutable backend-native view.

unsafe fn destroy(_handle: NonNull<<HostBytesBackend as Backend>::Handle>)

Deallocates a backend handle.

fn size_of_scalar_big() -> usize

Bytes size of ScalarBig.

fn size_of_scalar_prep() -> usize

Bytes size of ScalarPrep.

const SCRATCH_ALIGN: usize = 64

Required alignment (in bytes) for scratch-arena carved regions.

fn bytes_of_vec_znx_dft(n: usize, cols: usize, size: usize) -> usize

Byte size of a crate::layouts::VecZnxDft buffer.

fn bytes_of_vec_znx_big(n: usize, cols: usize, size: usize) -> usize

Byte size of a crate::layouts::VecZnxBig buffer.

fn bytes_of_svp_ppol(n: usize, cols: usize) -> usize

Byte size of a crate::layouts::SvpPPol buffer.

fn bytes_of_vmp_pmat( n: usize, rows: usize, cols_in: usize, cols_out: usize, size: usize, ) -> usize

Byte size of a crate::layouts::VmpPMat buffer.

fn bytes_of_cnv_pvec_left(n: usize, cols: usize, size: usize) -> usize

Byte size of a crate::layouts::CnvPVecL buffer.

fn bytes_of_cnv_pvec_right(n: usize, cols: usize, size: usize) -> usize

Byte size of a crate::layouts::CnvPVecR buffer.

impl Clone for HostBytesBackend

fn clone(&self) -> HostBytesBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostBytesBackend

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

Formats the value using the given formatter.

impl Default for HostBytesBackend

fn default() -> HostBytesBackend

Returns the “default value” for a type.

impl HalModuleImpl<HostBytesBackend> for HostBytesBackend

fn new(n: u64) -> Module<HostBytesBackend>

impl PartialEq for HostBytesBackend

fn eq(&self, other: &HostBytesBackend) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HostBytesBackend

impl Eq for HostBytesBackend

impl StructuralPartialEq for HostBytesBackend