Struct UserMemory 

pub struct UserMemory { /* private fields */ }

UserMemory facilitates testing code that requires user memory.

Example: let mut mem = UserMemory::create(size).unwrap(); mem.commit_and_map(size).unwrap(); let out_ptr = UserOutPtr::::new(mem.base() as *mut u32); out_ptr.write(value).unwrap();

Implementations

impl UserMemory

pub fn create(size: usize) -> Option<Self>

pub fn base(&self) -> usize

pub fn commit_and_map(&mut self, size: usize) -> Result<(), Status>

Ensures the mapping is committed and mapped such that usages will cause no faults.

pub fn vmo_write(&mut self, data: &[u8], offset: u64) -> Result<(), Status>

Write to the underlying VMO directly, bypassing the mapping.

pub fn vmo_read(&mut self, data: &mut [u8], offset: u64) -> Result<(), Status>

Read from the underlying VMO directly, bypassing the mapping.

Trait Implementations

impl Drop for UserMemory

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.