Struct mmap_fixed::MemoryMap

pub struct MemoryMap { /* private fields */ }

A memory mapped file or chunk of memory. This is a very system-specific interface to the OS’s memory mapping facilities (mmap on POSIX, VirtualAlloc/CreateFileMapping on Windows). It makes no attempt at abstracting platform differences, besides in error values returned. Consider yourself warned.

The memory map is released (unmapped) when the destructor is run, so don’t let it leave scope by accident if you want it to stick around.

Implementations

impl MemoryMap

pub fn new(min_len: usize, options: &[MapOption]) -> Result<MemoryMap, MapError>

Create a new mapping with the given options, at least min_len bytes long. min_len must be greater than zero; see the note on ErrZeroLength.

pub fn granularity() -> usize

Granularity that the offset or address must be for MapOffset and MapAddr respectively.

impl MemoryMap

pub fn data(&self) -> *mut u8

Returns the pointer to the memory created or modified by this map.

pub fn len(&self) -> usize

Returns the number of bytes this map applies to.

pub fn kind(&self) -> MemoryMapKind

Returns the type of mapping this represents.

Trait Implementations

impl Drop for MemoryMap

fn drop(&mut self)

Unmap the mapping. Panics the task if munmap panics.