Enum epserde::deser::mem_case::MemBackend

pub enum MemBackend {
    None,
    Memory(Box<[MemoryAlignment]>),
    Mmap(Mmap),
}

Possible backends of a MemCase. The None variant is used when the data structure is created in memory; the Memory variant is used when the data structure is deserialized from a file loaded into a heap-allocated memory region; the Mmap variant is used when the data structure is deserialized from a mmap()-based region, either coming from an allocation or a from mapping a file.

Variants

None

No backend. The data structure is a standard Rust data structure. This variant is returned by MemCase::encase.

Memory(Box<[MemoryAlignment]>)

The backend is a heap-allocated in a memory region aligned to 16 bytes. This variant is returned by crate::deser::Deserialize::load_mem.

Mmap(Mmap)

The backend is the result to a call to mmap(). This variant is returned by crate::deser::Deserialize::load_mmap and crate::deser::Deserialize::mmap.

Implementations

impl MemBackend

pub fn as_ref(&self) -> Option<&[u8]>

Trait Implementations

impl CopyType for MemBackend

where Box<[MemoryAlignment]>: MemSize, Mmap: MemSize,

type Copy = False

impl Debug for MemBackend

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

Formats the value using the given formatter.

impl MemDbgImpl for MemBackend

where Box<[MemoryAlignment]>: MemDbgImpl, Mmap: MemDbgImpl,

fn _mem_dbg_rec_on( &self, _memdbg_writer: &mut impl Write, _memdbg_total_size: usize, _memdbg_max_depth: usize, _memdbg_prefix: &mut String, _memdbg_is_last: bool, _memdbg_flags: DbgFlags ) -> Result

impl MemSize for MemBackend

where Box<[MemoryAlignment]>: MemSize, Mmap: MemSize,

fn mem_size(&self, _memsize_flags: SizeFlags) -> usize

Return the (recursively computed) overall memory size of the structure in bytes.