Struct unsafe_io::UnsafeHandle [−][src]
A non-owning unsafe I/O handle.
On Posix-ish platforms this is just a RawFd
. On Windows it is a minimal
abstraction over RawHandle
and RawSocket
. Similar to Rust raw
pointers, it is considered safe to construct these, but unsafe to do any
I/O with them (effectively dereferencing them).
Implementations
impl UnsafeHandle
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#[must_use]pub const unsafe fn as_readable(self) -> UnsafeReadableⓘNotable traits for UnsafeReadable
impl Read for UnsafeReadable
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Notable traits for UnsafeReadable
impl Read for UnsafeReadable
Obtain self
with a type that implements Read
.
Safety
The resulting UnsafeReadable
value must not outlive the underlying
resource.
Also, callers should avoid mixing uses of UnsafeReadable
with the
type's Read
or Write
implementations if the type uses buffering, as
for example async_std::fs::File
does.
#[must_use]pub const unsafe fn as_writeable(self) -> UnsafeWriteableⓘNotable traits for UnsafeWriteable
impl Write for UnsafeWriteable
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Notable traits for UnsafeWriteable
impl Write for UnsafeWriteable
Obtain self
with a type that implements Write
.
Safety
The resulting UnsafeWriteable
value must not outlive the underlying
resource.
Also, callers should avoid mixing uses of UnsafeWriteable
with the
type's Read
or Write
implementation if the type uses buffering, as
for example async_std::fs::File
does.
#[must_use]pub unsafe fn eq(self, other: Self) -> bool
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UnsafeHandle
doesn't implement Eq
or PartialEq
because comparison
is undefined for dangling handles.
Safety
Both self
and other
must outlive their underlying resources.
#[must_use]pub const fn from_raw_fd(raw_fd: RawFd) -> Self
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Like FromRawFd::from_raw_fd
, but isn't unsafe because it doesn't
imply a dereference.
Trait Implementations
impl AsRawFd for UnsafeHandle
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UnsafeHandle
doesn't own its handle, but AsRawFd
doesn't require any
guarantees about lifetimes, so it's safe to implement. This is similar to
how RawFd
implements AsRawFd
(see the raw_fd_reflexive_traits
trait
implementations in std
).
impl Clone for UnsafeHandle
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fn clone(&self) -> UnsafeHandle
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pub fn clone_from(&mut self, source: &Self)
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impl Copy for UnsafeHandle
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impl Debug for UnsafeHandle
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impl FromRawFd for UnsafeHandle
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UnsafeHandle
doesn't own its handle; see the comments for
impl AsRawFd for UnsafeHandle
.
unsafe fn from_raw_fd(raw_fd: RawFd) -> Self
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impl FromUnsafeHandle for UnsafeHandle
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UnsafeHandle
doesn't own its handle; see the comments for
impl AsRawFd for UnsafeHandle
.
unsafe fn from_unsafe_handle(unsafe_handle: UnsafeHandle) -> Self
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impl IntoRawFd for UnsafeHandle
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UnsafeHandle
doesn't own its handle; see the comments for
impl AsRawFd for UnsafeHandle
.
fn into_raw_fd(self) -> RawFd
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Auto Trait Implementations
impl RefUnwindSafe for UnsafeHandle
impl Send for UnsafeHandle
impl Sync for UnsafeHandle
impl Unpin for UnsafeHandle
impl UnwindSafe for UnsafeHandle
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,