Trait rustc_middle::mir::interpret::AllocBytes

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pub trait AllocBytes: Clone + Debug + Deref<Target = [u8]> + DerefMut<Target = [u8]> {
    // Required methods
    fn from_bytes<'a>(slice: impl Into<Cow<'a, [u8]>>, _align: Align) -> Self;
    fn zeroed(size: Size, _align: Align) -> Option<Self>;
    fn as_mut_ptr(&mut self) -> *mut u8;
    fn as_ptr(&self) -> *const u8;
}
Expand description

Functionality required for the bytes of an Allocation.

Required Methods§

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fn from_bytes<'a>(slice: impl Into<Cow<'a, [u8]>>, _align: Align) -> Self

Create an AllocBytes from a slice of u8.

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fn zeroed(size: Size, _align: Align) -> Option<Self>

Create a zeroed AllocBytes of the specified size and alignment. Returns None if we ran out of memory on the host.

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fn as_mut_ptr(&mut self) -> *mut u8

Gives direct access to the raw underlying storage.

Crucially this pointer is compatible with:

  • other pointers returned by this method, and
  • references returned from deref(), as long as there was no write.
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fn as_ptr(&self) -> *const u8

Gives direct access to the raw underlying storage.

Crucially this pointer is compatible with:

  • other pointers returned by this method, and
  • references returned from deref(), as long as there was no write.

Object Safety§

This trait is not object safe.

Implementations on Foreign Types§

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impl AllocBytes for Box<[u8]>

Default bytes for Allocation is a Box<u8>.

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fn from_bytes<'a>(slice: impl Into<Cow<'a, [u8]>>, _align: Align) -> Self

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fn zeroed(size: Size, _align: Align) -> Option<Self>

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fn as_mut_ptr(&mut self) -> *mut u8

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fn as_ptr(&self) -> *const u8

Implementors§