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InitcodeBuffer

ethrex_common::types

Struct InitcodeBuffer 

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

The allocations an initcode Code is built in: its bytecode buffer and its jump-destination bitmap. A finished initcode hands them back through Code::into_initcode_buffer, so the VM can keep them for the next CREATE instead of allocating new ones each time, which a zkVM guest’s bump allocator never reclaims.

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impl InitcodeBuffer

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pub fn set(&mut self, initcode: &[u8])

Replaces the contents with initcode, with room for the padding Code::from_initcode_buffer appends, so that appending it does not reallocate.

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pub fn clear(&mut self)

Empties the buffer, keeping its allocations.

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pub fn initcode(&self) -> &[u8] ⓘ

The initcode the buffer was last set to.

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pub fn capacity(&self) -> usize

How many bytes of initcode and padding the buffer holds without reallocating.

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pub fn is_allocated(&self) -> bool

Whether the buffer holds any allocation worth keeping.

Trait Implementations§

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impl Debug for InitcodeBuffer

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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 Default for InitcodeBuffer

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl<T> Any for T
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Gets the TypeId of self. Read more
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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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Calls U::from(self).

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

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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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Returns the String produced by Ts Debug implementation.

§Examples
use malachite_base::strings::ToDebugString;

assert_eq!([1, 2, 3].to_debug_string(), "[1, 2, 3]");
assert_eq!(
    [vec![2, 3], vec![], vec![4]].to_debug_string(),
    "[[2, 3], [], [4]]"
);
assert_eq!(Some(5).to_debug_string(), "Some(5)");
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The type returned in the event of a conversion error.
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