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GetLayerReply

Struct GetLayerReply 

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pub struct GetLayerReply {
    pub dir_count: u32,
}
Expand description

Reply from GetLayer: the number of diff-directory slots in the logical FD array.

GetLayer is a streaming method (more): it yields multiple frames, each carrying a batch of FDs. The client MUST concatenate the FD batches from all frames (in arrival order) to reconstruct the full logical FD array:

  • fds[0] — data pipe read end (carries the splitdirfdstream bytes).
  • fds[1..=dir_count] — the dirfds region (dir_count slots total). The real objects-directory fd sits at a sparse, hash-determined index within this region; the remaining (gap) slots hold inert dummy fds that reconstruct never dereferences.
  • fds[dir_count+1..] — opaque lifetime FDs. The client MUST hold every one of these open until it has finished reading and processing all dir fds, then close them all to signal completion to the server.

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§dir_count: u32

Number of diff-directory file descriptors in the full logical FD array (i.e. fds[1..=dir_count] after concatenating all frames’ batches).

Trait Implementations§

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impl Clone for GetLayerReply

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fn clone(&self) -> GetLayerReply

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GetLayerReply

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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<'de> Deserialize<'de> for GetLayerReply

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for GetLayerReply

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Type for GetLayerReply

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const TYPE: &'static Type<'static>

The type information.

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

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where T: ?Sized,

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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where S: Serialize,

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fn to_canon_json_writer<W>(&self, writer: W) -> Result<(), Error>
where W: Write,

Serialize the given data structure as JSON into the I/O stream.
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Serialize the given data structure as a String.
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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