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use {
super::Bank, solana_program_runtime::sysvar_cache::SysvarCache,
solana_sdk::account::ReadableAccount,
};
impl Bank {
pub(crate) fn fill_missing_sysvar_cache_entries(&self) {
let mut sysvar_cache = self.sysvar_cache.write().unwrap();
sysvar_cache.fill_missing_entries(|pubkey, callback| {
if let Some(account) = self.get_account_with_fixed_root(pubkey) {
callback(account.data());
}
});
}
pub(crate) fn reset_sysvar_cache(&self) {
let mut sysvar_cache = self.sysvar_cache.write().unwrap();
sysvar_cache.reset();
}
pub fn get_sysvar_cache_for_tests(&self) -> SysvarCache {
self.sysvar_cache.read().unwrap().clone()
}
}
#[cfg(test)]
mod tests {
use {
super::*,
solana_sdk::{genesis_config::create_genesis_config, pubkey::Pubkey},
std::sync::Arc,
};
#[test]
#[allow(deprecated)]
fn test_sysvar_cache_initialization() {
let (genesis_config, _mint_keypair) = create_genesis_config(100_000);
let bank0 = Arc::new(Bank::new_for_tests(&genesis_config));
let bank0_sysvar_cache = bank0.sysvar_cache.read().unwrap();
let bank0_cached_clock = bank0_sysvar_cache.get_clock();
let bank0_cached_epoch_schedule = bank0_sysvar_cache.get_epoch_schedule();
let bank0_cached_fees = bank0_sysvar_cache.get_fees();
let bank0_cached_rent = bank0_sysvar_cache.get_rent();
assert!(bank0_cached_clock.is_ok());
assert!(bank0_cached_epoch_schedule.is_ok());
assert!(bank0_cached_fees.is_ok());
assert!(bank0_cached_rent.is_ok());
assert!(bank0_sysvar_cache.get_slot_hashes().is_err());
let bank1 = Arc::new(Bank::new_from_parent(
&bank0,
&Pubkey::default(),
bank0.slot() + 1,
));
let bank1_sysvar_cache = bank1.sysvar_cache.read().unwrap();
let bank1_cached_clock = bank1_sysvar_cache.get_clock();
let bank1_cached_epoch_schedule = bank1_sysvar_cache.get_epoch_schedule();
let bank1_cached_fees = bank1_sysvar_cache.get_fees();
let bank1_cached_rent = bank1_sysvar_cache.get_rent();
assert!(bank1_cached_clock.is_ok());
assert!(bank1_cached_epoch_schedule.is_ok());
assert!(bank1_cached_fees.is_ok());
assert!(bank1_cached_rent.is_ok());
assert!(bank1_sysvar_cache.get_slot_hashes().is_ok());
assert_ne!(bank0_cached_clock, bank1_cached_clock);
assert_eq!(bank0_cached_epoch_schedule, bank1_cached_epoch_schedule);
assert_ne!(bank0_cached_fees, bank1_cached_fees);
assert_eq!(bank0_cached_rent, bank1_cached_rent);
let bank2 = Bank::new_from_parent(&bank1, &Pubkey::default(), bank1.slot() + 1);
let bank2_sysvar_cache = bank2.sysvar_cache.read().unwrap();
let bank2_cached_clock = bank2_sysvar_cache.get_clock();
let bank2_cached_epoch_schedule = bank2_sysvar_cache.get_epoch_schedule();
let bank2_cached_fees = bank2_sysvar_cache.get_fees();
let bank2_cached_rent = bank2_sysvar_cache.get_rent();
assert!(bank2_cached_clock.is_ok());
assert!(bank2_cached_epoch_schedule.is_ok());
assert!(bank2_cached_fees.is_ok());
assert!(bank2_cached_rent.is_ok());
assert!(bank2_sysvar_cache.get_slot_hashes().is_ok());
assert_ne!(bank1_cached_clock, bank2_cached_clock);
assert_eq!(bank1_cached_epoch_schedule, bank2_cached_epoch_schedule);
assert_eq!(bank1_cached_fees, bank2_cached_fees);
assert_eq!(bank1_cached_rent, bank2_cached_rent);
assert_ne!(
bank1_sysvar_cache.get_slot_hashes(),
bank2_sysvar_cache.get_slot_hashes(),
);
}
#[test]
#[allow(deprecated)]
fn test_reset_and_fill_sysvar_cache() {
let (genesis_config, _mint_keypair) = create_genesis_config(100_000);
let bank0 = Arc::new(Bank::new_for_tests(&genesis_config));
let bank1 = Bank::new_from_parent(&bank0, &Pubkey::default(), bank0.slot() + 1);
let bank1_sysvar_cache = bank1.sysvar_cache.read().unwrap();
let bank1_cached_clock = bank1_sysvar_cache.get_clock();
let bank1_cached_epoch_schedule = bank1_sysvar_cache.get_epoch_schedule();
let bank1_cached_fees = bank1_sysvar_cache.get_fees();
let bank1_cached_rent = bank1_sysvar_cache.get_rent();
let bank1_cached_slot_hashes = bank1_sysvar_cache.get_slot_hashes();
assert!(bank1_cached_clock.is_ok());
assert!(bank1_cached_epoch_schedule.is_ok());
assert!(bank1_cached_fees.is_ok());
assert!(bank1_cached_rent.is_ok());
assert!(bank1_cached_slot_hashes.is_ok());
drop(bank1_sysvar_cache);
bank1.reset_sysvar_cache();
let bank1_sysvar_cache = bank1.sysvar_cache.read().unwrap();
assert!(bank1_sysvar_cache.get_clock().is_err());
assert!(bank1_sysvar_cache.get_epoch_schedule().is_err());
assert!(bank1_sysvar_cache.get_fees().is_err());
assert!(bank1_sysvar_cache.get_rent().is_err());
assert!(bank1_sysvar_cache.get_slot_hashes().is_err());
drop(bank1_sysvar_cache);
bank1.fill_missing_sysvar_cache_entries();
let bank1_sysvar_cache = bank1.sysvar_cache.read().unwrap();
assert_eq!(bank1_sysvar_cache.get_clock(), bank1_cached_clock);
assert_eq!(
bank1_sysvar_cache.get_epoch_schedule(),
bank1_cached_epoch_schedule
);
assert_eq!(bank1_sysvar_cache.get_fees(), bank1_cached_fees);
assert_eq!(bank1_sysvar_cache.get_rent(), bank1_cached_rent);
assert_eq!(
bank1_sysvar_cache.get_slot_hashes(),
bank1_cached_slot_hashes
);
}
}