Struct MemoryFile 

pub struct MemoryFile { /* private fields */ }

A handle to one in-memory file.

Trait Implementations

impl Drop for MemoryFile

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl File for MemoryFile

fn read_exact_at(&self, buf: &mut [u8], offset: u64) -> Result<()>

Fill buf from the file starting at byte offset.

fn write_all_at(&mut self, buf: &[u8], offset: u64) -> Result<()>

Write all of buf to the file starting at byte offset, extending the file if necessary.

fn truncate(&mut self, size: u64) -> Result<()>

Truncate or extend the file to exactly size bytes.

fn sync(&mut self) -> Result<()>

Flush buffered writes to durable storage.

fn size(&self) -> Result<u64>

The current size of the file in bytes.

fn lock(&mut self, level: LockLevel) -> Result<()>

Acquire (or upgrade to) the given lock level, returning Error::Busy if an incompatible lock is held.

fn unlock(&mut self, level: LockLevel) -> Result<()>

Release down to the given lock level. Never fails for the built-in VFSs.