Struct cros_async::sys::unix::poll_source::PollSource

pub struct PollSource<F>(RegisteredSource<F>);

Async wrapper for an IO source that uses the FD executor to drive async operations.

Tuple Fields

0: RegisteredSource<F>

Implementations

impl<F: AsRawDescriptor> PollSource<F>

pub fn new(f: F, ex: &Arc<RawExecutor<EpollReactor>>) -> Result<Self>

Create a new PollSource from the given IO source.

impl<F: AsRawDescriptor> PollSource<F>

pub async fn read_to_vec(
    &self,
    file_offset: Option<u64>,
    vec: Vec<u8>
) -> AsyncResult<(usize, Vec<u8>)>

Reads from the iosource at file_offset and fill the given vec.

pub async fn read_to_mem(
    &self,
    file_offset: Option<u64>,
    mem: Arc<dyn BackingMemory + Send + Sync>,
    mem_offsets: impl IntoIterator<Item = MemRegion>
) -> AsyncResult<usize>

Reads to the given mem at the given offsets from the file starting at file_offset.

pub async fn wait_readable(&self) -> AsyncResult<()>

Wait for the FD of self to be readable.

pub async fn write_from_vec(
    &self,
    file_offset: Option<u64>,
    vec: Vec<u8>
) -> AsyncResult<(usize, Vec<u8>)>

Writes from the given vec to the file starting at file_offset.

pub async fn write_from_mem(
    &self,
    file_offset: Option<u64>,
    mem: Arc<dyn BackingMemory + Send + Sync>,
    mem_offsets: impl IntoIterator<Item = MemRegion>
) -> AsyncResult<usize>

Writes from the given mem from the given offsets to the file starting at file_offset.

pub async fn fallocate(
    &self,
    file_offset: u64,
    len: u64,
    mode: AllocateMode
) -> AsyncResult<()>

See fallocate(2) for details.

pub async fn fsync(&self) -> AsyncResult<()>

Sync all completed write operations to the backing storage.

pub async fn fdatasync(&self) -> AsyncResult<()>

Sync all data of completed write operations to the backing storage, avoiding updating extra metadata.

pub fn into_source(self) -> F

Yields the underlying IO source.

pub fn as_source_mut(&mut self) -> &mut F

Provides a mutable ref to the underlying IO source.

pub fn as_source(&self) -> &F

Provides a ref to the underlying IO source.