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ProcessHandle

Struct ProcessHandle 

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pub struct ProcessHandle { /* private fields */ }
Expand description

Handle for driving an interactive or non-interactive process.

This provides a unified interface for both PTY and pipe-based processes:

  • Write to stdin via writer_sender()
  • Read merged stdout/stderr via output_receiver()
  • Check exit status via has_exited() and exit_code()
  • Clean up via terminate()

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impl ProcessHandle

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pub fn writer_sender(&self) -> Sender<Vec<u8>>

Returns a channel sender for writing raw bytes to the child stdin.

§Example
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let writer = handle.writer_sender();
writer.send(b"input\n".to_vec()).await?;
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pub fn output_receiver(&self) -> Receiver<Bytes>

Returns a broadcast receiver that yields stdout/stderr chunks.

Multiple receivers can be created; each receives all output from the point of subscription.

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pub fn has_exited(&self) -> bool

True if the child process has exited.

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pub fn exit_code(&self) -> Option<i32>

Returns the exit code if the process has exited.

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pub fn is_output_drained(&self) -> bool

True once the stdout/stderr reader task has drained the child streams.

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pub fn terminate(&self)

Attempts to kill the child and abort helper tasks.

This is idempotent and safe to call multiple times.

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pub fn terminate_process(&self)

Kill the child process group without aborting the readers or wait task.

Session owners use this path when they still need to drain output and reap the child after termination. Call Self::terminate when the caller is abandoning the session and does not need that final drain.

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pub fn is_running(&self) -> bool

Check if the process is still running.

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pub async fn write( &self, bytes: impl Into<Vec<u8>>, ) -> Result<(), SendError<Vec<u8>>>

Send bytes to the process stdin.

Returns an error if the stdin channel is closed.

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pub fn is_writer_closed(&self) -> bool

Check if the writer channel is closed.

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impl Debug for ProcessHandle

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Drop for ProcessHandle

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fn drop(&mut self)

Executes the destructor for this type. Read more
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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. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> PtyHandle for T
where T: Send,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more