Struct MemoryMap 

pub struct MemoryMap<'a, T> { /* private fields */ }

Implementations

impl<'a, T> MemoryMap<'a, T>

pub unsafe fn new(ptr: *const T, size: usize) -> Self

Creates a new MemoryMap instance from a pointer and size.

Safety

ptr must be a valid pointer to a memory-mapped region of size bytes.

pub fn size_bytes(&self) -> usize

Returns the mapped region size in bytes.

pub fn as_slice(&self) -> &[T]

Borrows the mapped region as an immutable slice.

pub fn madvise(&self, advice: &[Madvice]) -> Result<(), Error>

Applies one or more access-pattern hints to the mapped region on Unix.

pub unsafe fn from_file<F>(fd: &'a F, size: usize) -> Result<Self, Error>

where F: AsRawFd,

Creates a new MemoryMap instance from a file descriptor and size.

Safety

fd must be a valid file descriptor. The file descriptor must be open and readable. Size must be a valid size for the file descriptor.

pub fn close(self) -> Result<(), Error>

Explicitly unmaps the region and reports cleanup errors.

Trait Implementations

impl<T> Drop for MemoryMap<'_, T>

fn drop(&mut self)

Unmaps the region when the mapping goes out of scope.

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.