Struct AsyncStdFile

pub struct AsyncStdFile { /* private fields */ }

Async-std specific RuntimeFile implementation.

Trait Implementations

impl AsFd for AsyncStdFile

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl AsRawFd for AsyncStdFile

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl AsyncRead for AsyncStdFile

fn poll_read( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into buf.

fn poll_read_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &mut [IoSliceMut<'_>], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into bufs using vectored IO operations.

impl AsyncSeek for AsyncStdFile

fn poll_seek( self: Pin<&mut Self>, cx: &mut Context<'_>, pos: SeekFrom, ) -> Poll<Result<u64>>

Attempt to seek to an offset, in bytes, in a stream.

impl AsyncWrite for AsyncStdFile

fn poll_write( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8], ) -> Poll<Result<usize>>

Attempt to write bytes from buf into the object.

fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Attempt to flush the object, ensuring that any buffered data reach their destination.

fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Attempt to close the object.

fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>], ) -> Poll<Result<usize>>

Attempt to write bytes from bufs into the object using vectored IO operations.

impl From<OwnedFd> for AsyncStdFile

fn from(fd: OwnedFd) -> Self

Converts to this type from the input type.

impl RuntimeFile for AsyncStdFile

type Runtime = AsyncStdGlobalRuntime

An async runtime.

fn open( _runtime: &Self::Runtime, open_options: &OpenOptions, path: impl AsRef<Path>, ) -> impl Future<Output = Result<Self>> + Send

where Self: Sized,

Attempts to open a file with specified OpenOptions.

fn set_len(&self, size: u64) -> impl Future<Output = Result<()>> + Send

Truncates or extends the underlying file, updating the size of this file to become size.

fn metadata(&self) -> impl Future<Output = Result<Metadata>> + Send

Queries metadata about the underlying file.

fn sync_all(&self) -> impl Future<Output = Result<()>> + Send

Attempts to sync all OS-internal file content and metadata to disk.

fn sync_data(&self) -> impl Future<Output = Result<()>> + Send

This function is similar to RuntimeFile::sync_all, except that it might not synchronize file metadata to the filesystem.

fn set_permissions( &self, permissions: Permissions, ) -> impl Future<Output = Result<()>> + Send

Changes the permissions on the underlying file.