Trait capnp::message::Allocator

pub unsafe trait Allocator {
    fn allocate_segment(&mut self, minimum_size: u32) -> (*mut Word, u32);

    fn pre_drop(&mut self, _segment0_currently_allocated: u32) { ... }
}

An object that allocates memory for a Cap'n Proto message as it is being built.

Required methods

fn allocate_segment(&mut self, minimum_size: u32) -> (*mut Word, u32)

Allocates memory for a new segment, returning a pointer to the start of the segment and a u32 indicating the length of the segment.

The allocated memory MUST be initialized to all zeroes.

UNSAFETY ALERT: The callee is responsible for ensuring that the returned memory is valid for the lifetime of the object and doesn't overlap with other allocated memory.

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Provided methods

fn pre_drop(&mut self, _segment0_currently_allocated: u32)

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Implementors

impl Allocator for HeapAllocator

fn allocate_segment(&mut self, minimum_size: u32) -> (*mut Word, u32)

impl<'a, 'b: 'a> Allocator for ScratchSpaceHeapAllocator<'a, 'b>

fn allocate_segment(&mut self, minimum_size: u32) -> (*mut Word, u32)

fn pre_drop(&mut self, segment0_currently_allocated: u32)

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