Struct MmapBlock 

pub struct MmapBlock { /* private fields */ }

A raw block of writable virtual memory allocated from the operating system.

Implementations

impl MmapBlock

pub fn new(len: usize) -> Result<Self>

Allocate a new anonymous writable mapping.

Errors

Returns an error if len is zero or the underlying mmap fails.

pub fn new_on_node(len: usize, node: u32) -> Result<Self>

Allocate a new mapping and bind it to a NUMA node when supported.

Errors

Returns an error if len is zero, if mmap fails, or if the NUMA node is invalid or binding fails.

pub fn as_ptr(&self) -> *const u8

Immutable raw pointer to the start of the mapping.

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

Mutable raw pointer to the start of the mapping.

pub fn len(&self) -> usize

Length of the mapping in bytes.

pub fn is_empty(&self) -> bool

Whether the mapping is empty.

pub fn numa_node(&self) -> Option<u32>

NUMA node this block is bound to, if any.

Trait Implementations

impl Debug for MmapBlock

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

Formats the value using the given formatter.

impl Drop for MmapBlock

fn drop(&mut self)

Executes the destructor for this type.

impl Send for MmapBlock