Trait SnapshotRng 

pub trait SnapshotRng: Sized {
    // Required methods
    fn capture(&self) -> Result<Vec<u8>, CheckpointError>;
    fn restore(bytes: &[u8]) -> Result<Self, CheckpointError>;
}

An RNG whose complete internal state can be captured to bytes and restored, enabling bit-identical checkpoint resume.

Implemented for the ChaCha family (ChaCha8Rng, ChaCha12Rng, ChaCha20Rng), all of which expose fully serializable state.

Required Methods

fn capture(&self) -> Result<Vec<u8>, CheckpointError>

Serialize the full RNG state to a byte buffer.

fn restore(bytes: &[u8]) -> Result<Self, CheckpointError>

Reconstruct an RNG from bytes previously produced by capture.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl SnapshotRng for ChaCha8Rng

fn capture(&self) -> Result<Vec<u8>, CheckpointError>

fn restore(bytes: &[u8]) -> Result<Self, CheckpointError>

impl SnapshotRng for ChaCha12Rng

fn capture(&self) -> Result<Vec<u8>, CheckpointError>

fn restore(bytes: &[u8]) -> Result<Self, CheckpointError>

impl SnapshotRng for ChaCha20Rng

fn capture(&self) -> Result<Vec<u8>, CheckpointError>

fn restore(bytes: &[u8]) -> Result<Self, CheckpointError>

Implementors