Struct MemoryMappedFile 

pub struct MemoryMappedFile { /* private fields */ }

Memory-mapped file wrapper

Implementations

impl MemoryMappedFile

pub fn new( path: PathBuf, config: MemoryMappedConfig, ) -> Result<Self, OptimizerError>

Create a new memory-mapped file

pub fn open( path: PathBuf, config: MemoryMappedConfig, ) -> Result<Self, OptimizerError>

Open an existing memory-mapped file

pub fn write(&mut self, data: &[u8]) -> Result<usize, OptimizerError>

Write data to the memory-mapped file

pub fn read( &mut self, offset: usize, length: usize, ) -> Result<Vec<u8>, OptimizerError>

Read data from the memory-mapped file

pub fn read_all(&mut self) -> Result<Vec<u8>, OptimizerError>

Read all data from the file

pub fn write_at( &mut self, offset: usize, data: &[u8], ) -> Result<(), OptimizerError>

Overwrite data at a specific offset

pub fn sync(&mut self) -> Result<(), OptimizerError>

Sync the file to disk

pub fn truncate(&mut self, size: usize) -> Result<(), OptimizerError>

Truncate the file to a specific size

pub fn size(&self) -> usize

Get the current file size

pub fn capacity(&self) -> usize

Get the current file capacity

pub fn path(&self) -> &Path

Get the file path