Struct wasmer_wasi::Stderr
source · [−]pub struct Stderr;
Expand description
A wrapper type around Stderr that implements VirtualFile
and
Serialize
+ Deserialize
.
Trait Implementations
sourceimpl Read for Stderr
impl Read for Stderr
sourcefn read(&mut self, _buf: &mut [u8]) -> Result<usize, Error>
fn read(&mut self, _buf: &mut [u8]) -> Result<usize, Error>
Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more
sourcefn read_to_end(&mut self, _buf: &mut Vec<u8, Global>) -> Result<usize, Error>
fn read_to_end(&mut self, _buf: &mut Vec<u8, Global>) -> Result<usize, Error>
Read all bytes until EOF in this source, placing them into buf
. Read more
sourcefn read_to_string(&mut self, _buf: &mut String) -> Result<usize, Error>
fn read_to_string(&mut self, _buf: &mut String) -> Result<usize, Error>
Read all bytes until EOF in this source, appending them to buf
. Read more
sourcefn read_exact(&mut self, _buf: &mut [u8]) -> Result<(), Error>
fn read_exact(&mut self, _buf: &mut [u8]) -> Result<(), Error>
Read the exact number of bytes required to fill buf
. Read more
1.36.0 · sourcefn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>
Like read
, except that it reads into a slice of buffers. Read more
sourcefn is_read_vectored(&self) -> bool
fn is_read_vectored(&self) -> bool
can_vector
)Determines if this Read
er has an efficient read_vectored
implementation. Read more
sourcefn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>
fn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>
read_buf
)Pull some bytes from this source into the specified buffer. Read more
sourcefn read_buf_exact(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>
fn read_buf_exact(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>
read_buf
)Read the exact number of bytes required to fill buf
. Read more
1.0.0 · sourcefn by_ref(&mut self) -> &mut Self
fn by_ref(&mut self) -> &mut Self
Creates a “by reference” adaptor for this instance of Read
. Read more
sourceimpl Seek for Stderr
impl Seek for Stderr
sourcefn seek(&mut self, _pos: SeekFrom) -> Result<u64, Error>
fn seek(&mut self, _pos: SeekFrom) -> Result<u64, Error>
Seek to an offset, in bytes, in a stream. Read more
1.55.0 · sourcefn rewind(&mut self) -> Result<(), Error>
fn rewind(&mut self) -> Result<(), Error>
Rewind to the beginning of a stream. Read more
sourceimpl VirtualFile for Stderr
impl VirtualFile for Stderr
sourcefn last_accessed(&self) -> u64
fn last_accessed(&self) -> u64
the last time the file was accessed in nanoseconds as a UNIX timestamp
sourcefn last_modified(&self) -> u64
fn last_modified(&self) -> u64
the last time the file was modified in nanoseconds as a UNIX timestamp
sourcefn created_time(&self) -> u64
fn created_time(&self) -> u64
the time at which the file was created in nanoseconds as a UNIX timestamp
sourcefn set_len(&mut self, _new_size: u64) -> Result<(), FsError>
fn set_len(&mut self, _new_size: u64) -> Result<(), FsError>
Change the size of the file, if the new_size
is greater than the current size
the extra bytes will be allocated and zeroed Read more
sourcefn bytes_available(&self) -> Result<usize, FsError>
fn bytes_available(&self) -> Result<usize, FsError>
Returns the number of bytes available. This function must not block
sourcefn get_fd(&self) -> Option<FileDescriptor>
fn get_fd(&self) -> Option<FileDescriptor>
Used for polling. Default returns None
because this method cannot be implemented for most types
Returns the underlying host fd Read more
sourceimpl Write for Stderr
impl Write for Stderr
sourcefn write(&mut self, buf: &[u8]) -> Result<usize, Error>
fn write(&mut self, buf: &[u8]) -> Result<usize, Error>
Write a buffer into this writer, returning how many bytes were written. Read more
sourcefn flush(&mut self) -> Result<(), Error>
fn flush(&mut self) -> Result<(), Error>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
sourcefn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
Attempts to write an entire buffer into this writer. Read more
sourcefn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>
fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>
Writes a formatted string into this writer, returning any error encountered. Read more
sourcefn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
can_vector
)Determines if this Write
r has an efficient write_vectored
implementation. Read more
Auto Trait Implementations
impl RefUnwindSafe for Stderr
impl Send for Stderr
impl Sync for Stderr
impl Unpin for Stderr
impl UnwindSafe for Stderr
Blanket Implementations
impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
fn pointer_metadata(
&<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata(
&<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
Deserializes using the given deserializer
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
impl<T> Pointable for T
impl<T> Pointable for T
impl<T> Upcastable for T where
T: 'static + Any + Send + Sync,
impl<T> Upcastable for T where
T: 'static + Any + Send + Sync,
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
upcast ref
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
upcast mut ref
sourceimpl<T> Upcastable for T where
T: 'static + Any + Debug,
impl<T> Upcastable for T where
T: 'static + Any + Debug,
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_box(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more