Struct CheckpointManager 

pub struct CheckpointManager {
    pub base_dir: String,
    pub max_checkpoints: usize,
    /* private fields */
}

Manages a rolling window of simulation checkpoints stored in memory.

In a real deployment base_dir would name a directory on disk; here the data is kept in an internal HashMap so the module has no I/O dependency.

Fields

base_dir: String

Base directory for checkpoint files (informational, not used for in-memory store).

max_checkpoints: usize

Maximum number of checkpoints to retain.

Implementations

impl CheckpointManager

pub fn new(base_dir: impl Into<String>, max_checkpoints: usize) -> Self

Create a new manager for base_dir retaining at most max_checkpoints.

pub fn save_checkpoint(&mut self, step: usize, data: &[f64]) -> String

Save a checkpoint for step, returning the logical path string.

pub fn list_checkpoints(&self) -> Vec<usize>

Return all checkpoint step numbers in ascending order.

pub fn load_checkpoint(&self, step: usize) -> Option<Vec<f64>>

Load the data for step, or None if no such checkpoint exists.

pub fn cleanup_old(&mut self)

Remove old checkpoints so that at most max_checkpoints are kept.

Trait Implementations

impl Debug for CheckpointManager

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.