Struct MemoryMap

pub struct MemoryMap<T> { /* private fields */ }

Memory mapped IO

Implementations

impl<T> MemoryMap<T>

pub fn read(&self) -> T

Reads data

pub fn write(&mut self, val: T)

Writes data

pub fn read_and_write<F: FnOnce(T) -> T>(&mut self, cb: F)

Gives callback to accept value to return modified value to write.

pub fn as_ref<'a>(&'a mut self) -> RawPtr<'a, T>

Access raw pointer

Note that, ownership is not transferred

pub unsafe fn open_file_raw( offset: off_t, fd: c_int, prot: c_int, flags: c_int, ) -> Option<Self>

Opens memory map.

Arguments

• offset - Offset within memory to start.
• fd - File description. -1 for anonymous.
• prot - Memory protection. Specifies operations to be expected. At the very least must be PROT_READ | PROT_WRITE
• flags - Specifies whether changes to the mapping are visible across forks. Must be MAP_ANON for anonymous.

pub fn anonymous() -> Option<Self>

Creates anonymous memory mapping

pub unsafe fn dev_mem(offset: off_t) -> Option<Self>

Creates memory mapping on /dev/mem which accesses physical memory

Arguments

• offset - Offset within memory to start.

Returns None on error, further details can be examined by checking last IO error.

Trait Implementations

impl<T> Debug for MemoryMap<T>

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

Formats the value using the given formatter.

impl<T> Drop for MemoryMap<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T> Pointer for MemoryMap<T>

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

Formats the value using the given formatter.

impl<T> Send for MemoryMap<T>

impl<T> Sync for MemoryMap<T>