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This commit is contained in:
Hardhat Chad
2024-04-30 17:43:04 +00:00
parent 43a01003a3
commit 8ab3c27492
8 changed files with 49 additions and 39 deletions
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21
src/processor/reset.rs
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@@ -18,7 +18,7 @@ use crate::{
/// Reset sets up the Ore program for the next epoch. Its responsibilities include:
/// 1. Reset bus account rewards counters.
/// 2. Adjust the reward rate to stabilize inflation.
/// 3. Top up the treasury token account to backup claims.
/// 3. Top up the treasury token account to fund claims.
///
/// Safety requirements:
/// - Reset is a permissionless instruction and can be invoked by any signer.
@@ -29,8 +29,11 @@ use crate::{
/// Discussion:
/// - It is important that `reset` can only be invoked once per 60 second period to ensure the supply growth rate
/// stays within the guaranteed bounds of 0 ≤ R ≤ 2 ORE/min.
/// - The reward rate is dynamically adjusted based on last epoch's actual reward rate (proxy for hashpower) to
/// target an average supply growth rate of 1 ORE/min.
/// - The reward rate is dynamically adjusted based on last epoch's theoretical reward rate to target an average
/// supply growth rate of 1 ORE/min.
/// - The "theoretical" reward rate refers to the amount that would have been paid out if rewards were not capped by
/// the bus limits. It's necessary to use this value to ensure the reward rate update calculation accurately
/// accounts for the difficulty of submitted hashes.
pub fn process_reset<'a, 'info>(
_program_id: &Pubkey,
accounts: &'a [AccountInfo<'info>],
@@ -85,17 +88,21 @@ pub fn process_reset<'a, 'info>(
// Reset bus accounts and calculate actual rewards mined since last reset
let mut total_remaining_rewards = 0u64;
let mut total_theoretical_rewards = 0u64;
for i in 0..BUS_COUNT {
let mut bus_data = busses[i].data.borrow_mut();
let bus = Bus::try_from_bytes_mut(&mut bus_data)?;
total_remaining_rewards = total_remaining_rewards.saturating_add(bus.rewards);
total_theoretical_rewards =
total_theoretical_rewards.saturating_add(bus.theoretical_rewards);
bus.rewards = BUS_EPOCH_REWARDS;
bus.theoretical_rewards = 0;
}
let total_epoch_rewards = MAX_EPOCH_REWARDS.saturating_sub(total_remaining_rewards);
// Update base reward rate for next epoch
config.base_reward_rate =
calculate_new_reward_rate(config.base_reward_rate, total_epoch_rewards);
calculate_new_reward_rate(config.base_reward_rate, total_theoretical_rewards);
// Fund treasury token account
solana_program::program::invoke_signed(
@@ -135,9 +142,9 @@ pub(crate) fn calculate_new_reward_rate(current_rate: u64, epoch_rewards: u64) -
}
// Calculate new reward rate.
let new_rate = (current_rate)
.saturating_mul(TARGET_EPOCH_REWARDS)
.saturating_div(epoch_rewards) as u64;
let new_rate = (current_rate as u128)
.saturating_mul(TARGET_EPOCH_REWARDS as u128)
.saturating_div(epoch_rewards as u128) as u64;
// Smooth reward rate so it cannot change by more than a constant factor from one epoch to the next.
let new_rate_min = current_rate.saturating_div(SMOOTHING_FACTOR);