jiminy-staking

MasterChef-style staking math. Global reward-per-token accumulator, per-user pending rewards, reward debt snapshots, emission rates. The standard pattern, done once, done right.

#![no_std] · no_alloc · BPF-safe · Built on pinocchio

Part of the jiminy toolkit.

Install

[dependencies]

jiminy-staking = "0.11"

What's inside

Function	What it does
`update_reward_per_token`	Advance the global accumulator given elapsed time and total staked
`pending_rewards`	Unclaimed rewards for a user position
`update_reward_debt`	Snapshot reward debt after claim or stake change
`emission_rate`	Per-second rate from total rewards and duration
`rewards_earned`	Total rewards emitted over an elapsed period

Precision constant: REWARD_PRECISION = 1_000_000_000_000 (10^12)

Quick start

use jiminy_staking::*;

let new_rpt = update_reward_per_token(
    current_rpt, last_update, now, rate_per_second, total_staked,
)?;
let pending = pending_rewards(user_staked, new_rpt, user_reward_debt)?;

About

Built by MoonManQuark / Bluefoot Labs.

If jiminy saved you some CU, donations welcome at solanadevdao.sol (F42ZovBoRJZU4av5MiESVwJWnEx8ZQVFkc1RM29zMxNT).

License