Struct io_lifetimes::OwnedHandle

1.63.0 · source ·
pub struct OwnedHandle { /* private fields */ }
Expand description

An owned handle.

This closes the handle on drop.

Note that it may have the value -1, which in OwnedHandle always represents a valid handle value, such as the current process handle, and not INVALID_HANDLE_VALUE, despite the two having the same value. See here for the full story.

And, it may have the value NULL (0), which can occur when consoles are detached from processes, or when windows_subsystem is used.

OwnedHandle uses CloseHandle to close its handle on drop. As such, it must not be used with handles to open registry keys which need to be closed with RegCloseKey instead.

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impl OwnedHandle

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pub fn try_clone(&self) -> Result<OwnedHandle, Error>

Creates a new OwnedHandle instance that shares the same underlying object as the existing OwnedHandle instance.

Trait Implementations§

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impl AsHandle for OwnedHandle

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fn as_handle(&self) -> BorrowedHandle<'_>

Borrows the handle. Read more
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impl AsRawHandle for OwnedHandle

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fn as_raw_handle(&self) -> *mut c_void

Extracts the raw handle. Read more
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impl Debug for OwnedHandle

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

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

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl From<Child> for OwnedHandle

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fn from(child: Child) -> OwnedHandle

Converts to this type from the input type.
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impl From<ChildStderr> for OwnedHandle

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fn from(child_stderr: ChildStderr) -> OwnedHandle

Converts to this type from the input type.
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impl From<ChildStdin> for OwnedHandle

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fn from(child_stdin: ChildStdin) -> OwnedHandle

Converts to this type from the input type.
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impl From<ChildStdout> for OwnedHandle

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fn from(child_stdout: ChildStdout) -> OwnedHandle

Converts to this type from the input type.
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impl From<File> for OwnedHandle

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fn from(file: File) -> OwnedHandle

Converts to this type from the input type.
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impl<T> From<JoinHandle<T>> for OwnedHandle

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fn from(join_handle: JoinHandle<T>) -> OwnedHandle

Converts to this type from the input type.
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impl FromRawHandle for OwnedHandle

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unsafe fn from_raw_handle(handle: *mut c_void) -> OwnedHandle

Constructs a new I/O object from the specified raw handle. Read more
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impl IntoRawHandle for OwnedHandle

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fn into_raw_handle(self) -> *mut c_void

Consumes this object, returning the raw underlying handle. Read more
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impl IsTerminal for OwnedHandle

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fn is_terminal(&self) -> bool

Returns true if the descriptor/handle refers to a terminal/tty. Read more
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impl TryFrom<HandleOrInvalid> for OwnedHandle

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type Error = InvalidHandleError

The type returned in the event of a conversion error.
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fn try_from( handle_or_invalid: HandleOrInvalid ) -> Result<OwnedHandle, InvalidHandleError>

Performs the conversion.
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impl TryFrom<HandleOrNull> for OwnedHandle

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type Error = NullHandleError

The type returned in the event of a conversion error.
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fn try_from( handle_or_null: HandleOrNull ) -> Result<OwnedHandle, NullHandleError>

Performs the conversion.
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impl FilelikeViewType for OwnedHandle

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impl Send for OwnedHandle

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impl Sync for OwnedHandle

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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> AsFilelike for Twhere T: AsHandle,

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fn as_filelike(&self) -> BorrowedHandle<'_>

Borrows the reference. Read more
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fn as_filelike_view<Target>(&self) -> FilelikeView<'_, Target>where Target: FilelikeViewType,

Return a borrowing view of a resource which dereferences to a &Target. Read more
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impl<T> AsRawFilelike for Twhere T: AsRawHandle,

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fn as_raw_filelike(&self) -> *mut c_void

Returns the raw value.
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impl<T> Borrow<T> for Twhere 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 Twhere 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> FromFilelike for Twhere T: From<OwnedHandle>,

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fn from_filelike(owned: OwnedHandle) -> T

Constructs a new instance of Self from the given filelike object. Read more
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fn from_into_filelike<Owned>(owned: Owned) -> Twhere Owned: IntoFilelike,

Constructs a new instance of Self from the given filelike object converted from into_owned. Read more
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impl<T> FromHandle for Twhere T: From<OwnedHandle>,

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fn from_handle(owned_handle: OwnedHandle) -> T

👎Deprecated since 1.0.0: FromHandle::from_handle is replaced by From<OwnedHandle>::from
Constructs a new instance of Self from the given handle. Read more
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fn from_into_handle<Owned: Into<OwnedHandle>>(into_owned: Owned) -> Selfwhere Self: Sized + From<OwnedHandle>,

Constructs a new instance of Self from the given handle converted from into_owned. Read more
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impl<T> FromRawFilelike for Twhere T: FromRawHandle,

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unsafe fn from_raw_filelike(raw: *mut c_void) -> T

Constructs Self from the raw value.
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impl<T, U> Into<U> for Twhere 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> IntoFilelike for Twhere T: Into<OwnedHandle>,

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fn into_filelike(self) -> OwnedHandle

Consumes this object, returning the underlying filelike object.
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impl<T> IntoHandle for Twhere OwnedHandle: From<T>,

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fn into_handle(self) -> OwnedHandle

👎Deprecated since 1.0.0: IntoHandle is replaced by From<...> for OwnedHandle or Into<OwnedHandle>
Consumes this object, returning the underlying handle. Read more
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impl<T> IntoRawFilelike for Twhere T: IntoRawHandle,

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fn into_raw_filelike(self) -> *mut c_void

Returns the raw value.
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere 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.