Enum MmapBacking 

pub enum MmapBacking {
    ReadOnly(Mmap),
    ReadWrite(MmapMut),
    Owned(Vec<u8>),
}

Owns the backing memory for a TRX data array.

May be a read-only mmap, a read-write mmap, or an owned heap buffer (used for converted offsets, deep copies, etc.).

Variants

ReadOnly(Mmap)

ReadWrite(MmapMut)

Owned(Vec<u8>)

Implementations

impl MmapBacking

pub fn as_bytes(&self) -> &[u8]

Raw bytes view.

pub fn as_bytes_mut(&mut self) -> Result<&mut [u8]>

Mutable raw bytes view (only for ReadWrite and Owned).

pub fn len(&self) -> usize

Length in bytes.

pub fn is_empty(&self) -> bool

Whether the backing is empty.

pub fn is_mapped(&self) -> bool

pub fn cast_slice<T: Pod>(&self) -> &[T]

Cast the raw bytes to a typed slice.

Panics if the bytes are not aligned or the length is not a multiple of size_of::<T>().

pub fn cast_slice_mut<T: Pod>(&mut self) -> Result<&mut [T]>

Cast the raw bytes to a mutable typed slice.

Trait Implementations

impl Debug for MmapBacking

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

Formats the value using the given formatter.