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use solana_ledger::bank_forks::BankForks;
use std::sync::{
atomic::{AtomicBool, Ordering},
Arc, RwLock,
};
use std::thread::{self, sleep, Builder, JoinHandle};
use std::time::Duration;
pub struct AccountsBackgroundService {
t_background: JoinHandle<()>,
}
const INTERVAL_MS: u64 = 100;
const SHRUNKEN_ACCOUNT_PER_SEC: usize = 250;
const SHRUNKEN_ACCOUNT_PER_INTERVAL: usize =
SHRUNKEN_ACCOUNT_PER_SEC / (1000 / INTERVAL_MS as usize);
impl AccountsBackgroundService {
pub fn new(bank_forks: Arc<RwLock<BankForks>>, exit: &Arc<AtomicBool>) -> Self {
info!("AccountsBackgroundService active");
let exit = exit.clone();
let mut consumed_budget = 0;
let t_background = Builder::new()
.name("solana-accounts-background".to_string())
.spawn(move || loop {
if exit.load(Ordering::Relaxed) {
break;
}
let bank = bank_forks.read().unwrap().working_bank();
bank.process_dead_slots();
consumed_budget = bank
.process_stale_slot_with_budget(consumed_budget, SHRUNKEN_ACCOUNT_PER_INTERVAL);
sleep(Duration::from_millis(INTERVAL_MS));
})
.unwrap();
Self { t_background }
}
pub fn join(self) -> thread::Result<()> {
self.t_background.join()
}
}