Struct wasmtime_wasi::preview2::stdio::Stderr

pub struct Stderr(_);

Trait Implementations

impl AsFd for Stderr

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

Borrows the file descriptor.

impl OutputStream for Stderr

fn as_any(&self) -> &dyn Any

fn pollable_write(&self) -> Option<BorrowedFd<'_>>

If this stream is writing from a host file descriptor, return it so that it can be polled with a host poll.

fn write<'life0, 'life1, 'async_trait>( &'life0 mut self, buf: &'life1 [u8] ) -> Pin<Box<dyn Future<Output = Result<u64, Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Write bytes. On success, returns the number of bytes written.

fn write_vectored<'a, 'life0, 'life1, 'async_trait>( &'life0 mut self, bufs: &'life1 [IoSlice<'a>] ) -> Pin<Box<dyn Future<Output = Result<u64, Error>> + Send + 'async_trait>>where Self: 'async_trait, 'a: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Vectored-I/O form of write.

fn write_zeroes<'life0, 'async_trait>( &'life0 mut self, nelem: u64 ) -> Pin<Box<dyn Future<Output = Result<u64, Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Repeatedly write a byte to a stream.

fn writable<'life0, 'async_trait>( &'life0 self ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Test whether this stream is writable.

fn is_write_vectored(&self) -> bool

Test whether vectored I/O writes are known to be optimized in the underlying implementation.

fn splice<'life0, 'life1, 'async_trait>( &'life0 mut self, src: &'life1 mut dyn InputStream, nelem: u64 ) -> Pin<Box<dyn Future<Output = Result<(u64, bool), Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Transfer bytes directly from an input stream to an output stream.