Struct solana_runtime::bank::Bank

pub struct Bank {
    pub rc: BankRc,
    pub src: StatusCacheRc,
    pub ancestors: Ancestors,
    pub last_vote_sync: AtomicU64,
    pub rewards: Option<Vec<(Pubkey, i64)>>,
    pub skip_drop: AtomicBool,
    pub cluster_type: Option<ClusterType>,
    pub lazy_rent_collection: AtomicBool,
    pub rewards_pool_pubkeys: Arc<HashSet<Pubkey>>,
    pub feature_set: Arc<FeatureSet>,
    // some fields omitted
}

Manager for the state of all accounts and programs after processing its entries. AbiExample is needed even without Serialize/Deserialize; actual (de-)serialization are implemented elsewhere for versioning

Fields

rc: BankRc

References to accounts, parent and signature status

src: StatusCacheRc

ancestors: Ancestors

The set of parents including this bank

last_vote_sync: AtomicU64

Last time when the cluster info vote listener has synced with this bank

rewards: Option<Vec<(Pubkey, i64)>>

Rewards that were paid out immediately after this bank was created

skip_drop: AtomicBool

cluster_type: Option<ClusterType>

lazy_rent_collection: AtomicBool

rewards_pool_pubkeys: Arc<HashSet<Pubkey>>

feature_set: Arc<FeatureSet>

Implementations

impl Bank

pub fn new(genesis_config: &GenesisConfig) -> Self

pub fn new_with_paths(
    genesis_config: &GenesisConfig,
    paths: Vec<PathBuf>,
    frozen_account_pubkeys: &[Pubkey],
    debug_keys: Option<Arc<HashSet<Pubkey>>>,
    additional_builtins: Option<&Builtins>
) -> Self

pub fn new_from_parent(
    parent: &Arc<Bank>,
    collector_id: &Pubkey,
    slot: Slot
) -> Self

Create a new bank that points to an immutable checkpoint of another bank.

pub fn warp_from_parent(
    parent: &Arc<Bank>,
    collector_id: &Pubkey,
    slot: Slot
) -> Self

Like new_from_parent but additionally:

• Doesn't assume that the parent is anywhere near slot, parent could be millions of slots in the past
• Adjusts the new bank's tick height to avoid having to run PoH for millions of slots
• Freezes the new bank, assuming that the user will Bank::new_from_parent from this bank

pub fn collector_id(&self) -> &Pubkey

pub fn slot(&self) -> Slot

pub fn epoch(&self) -> Epoch

pub fn first_normal_epoch(&self) -> Epoch

pub fn freeze_lock(&self) -> RwLockReadGuard<'_, Hash>

pub fn hash(&self) -> Hash

pub fn is_frozen(&self) -> bool

pub fn status_cache_ancestors(&self) -> Vec<u64>

pub fn unix_timestamp(&self) -> i64

computed unix_timestamp at this slot height

pub fn get_unused_from_slot(rooted_slot: Slot, unused: u64) -> u64

Unused conversion

pub fn clock(&self) -> Clock

pub fn update_recent_blockhashes(&self)

pub fn rehash(&self)

pub fn freeze(&self)

pub fn exhaustively_free_unused_resource(&self)

pub fn epoch_schedule(&self) -> &EpochSchedule

pub fn squash(&self)

squash the parent's state up into this Bank, this Bank becomes a root

pub fn parent(&self) -> Option<Arc<Bank>>

Return the more recent checkpoint of this bank instance.

pub fn parent_slot(&self) -> Slot

pub fn add_native_program(&self, name: &str, program_id: &Pubkey)

pub fn set_cross_program_support(&mut self, is_supported: bool)

pub fn set_compute_budget(&mut self, budget: ComputeBudget)

pub fn set_rent_burn_percentage(&mut self, burn_percent: u8)

pub fn set_hashes_per_tick(&mut self, hashes_per_tick: Option<u64>)

pub fn last_blockhash(&self) -> Hash

Return the last block hash registered.

pub fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> u64

pub fn last_blockhash_with_fee_calculator(&self) -> (Hash, FeeCalculator)

pub fn get_fee_calculator(&self, hash: &Hash) -> Option<FeeCalculator>

pub fn get_fee_rate_governor(&self) -> &FeeRateGovernor

pub fn get_blockhash_last_valid_slot(&self, blockhash: &Hash) -> Option<Slot>

pub fn confirmed_last_blockhash(&self) -> (Hash, FeeCalculator)

pub fn clear_signatures(&self)

Forget all signatures. Useful for benchmarking.

pub fn clear_slot_signatures(&self, slot: Slot)

pub fn can_commit(result: &Result<()>) -> bool

pub fn register_tick(&self, hash: &Hash)

Tell the bank which Entry IDs exist on the ledger. This function assumes subsequent calls correspond to later entries, and will boot the oldest ones once its internal cache is full. Once boot, the bank will reject transactions using that hash.

pub fn is_complete(&self) -> bool

pub fn is_block_boundary(&self, tick_height: u64) -> bool

pub fn process_transaction(&self, tx: &Transaction) -> Result<()>

Process a Transaction. This is used for unit tests and simply calls the vector Bank::process_transactions method

pub fn prepare_batch<'a, 'b>(
    &'a self,
    txs: &'b [Transaction],
    iteration_order: Option<Vec<usize>>
) -> TransactionBatch<'a, 'b>

pub fn prepare_simulation_batch<'a, 'b>(
    &'a self,
    txs: &'b [Transaction]
) -> TransactionBatch<'a, 'b>

pub fn simulate_transaction(
    &self,
    transaction: Transaction
) -> (Result<()>, Vec<String>)

Run transactions against a frozen bank without committing the results

pub fn unlock_accounts(&self, batch: &mut TransactionBatch<'_, '_>)

pub fn remove_unrooted_slot(&self, slot: Slot)

pub fn check_hash_age(&self, hash: &Hash, max_age: usize) -> Option<bool>

pub fn check_tx_durable_nonce(
    &self,
    tx: &Transaction
) -> Option<(Pubkey, Account)>

pub fn check_transactions(
    &self,
    txs: &[Transaction],
    iteration_order: Option<&[usize]>,
    lock_results: &[Result<()>],
    max_age: usize,
    error_counters: &mut ErrorCounters
) -> Vec<TransactionProcessResult>

pub fn collect_balances(
    &self,
    batch: &TransactionBatch<'_, '_>
) -> TransactionBalances

pub fn remove_executor(&self, pubkey: &Pubkey)

Remove an executor from the bank's cache

pub fn load_and_execute_transactions(
    &self,
    batch: &TransactionBatch<'_, '_>,
    max_age: usize,
    log_collector: Option<Rc<LogCollector>>,
    enable_cpi_recording: bool
) -> (Vec<(Result<TransactionLoadResult>, Option<HashAgeKind>)>, Vec<TransactionProcessResult>, Vec<Option<InnerInstructionsList>>, Vec<usize>, u64, u64)

pub fn commit_transactions(
    &self,
    txs: &[Transaction],
    iteration_order: Option<&[usize]>,
    loaded_accounts: &mut [(Result<TransactionLoadResult>, Option<HashAgeKind>)],
    executed: &[TransactionProcessResult],
    tx_count: u64,
    signature_count: u64
) -> TransactionResults

pub fn cluster_type(&self) -> ClusterType

#[must_use]pub fn load_execute_and_commit_transactions(
    &self,
    batch: &TransactionBatch<'_, '_>,
    max_age: usize,
    collect_balances: bool,
    enable_cpi_recording: bool
) -> (TransactionResults, TransactionBalancesSet, Vec<Option<InnerInstructionsList>>)

Process a batch of transactions.

#[must_use]pub fn process_transactions(&self, txs: &[Transaction]) -> Vec<Result<()>>

pub fn transfer(
    &self,
    n: u64,
    keypair: &Keypair,
    to: &Pubkey
) -> Result<Signature>

Create, sign, and process a Transaction from keypair to to of n lamports where blockhash is the last Entry ID observed by the client.

pub fn read_balance(account: &Account) -> u64

pub fn get_balance(&self, pubkey: &Pubkey) -> u64

Each program would need to be able to introspect its own state this is hard-coded to the Budget language

pub fn parents(&self) -> Vec<Arc<Bank>>

Compute all the parents of the bank in order

pub fn store_account(&self, pubkey: &Pubkey, account: &Account)

pub fn withdraw(&self, pubkey: &Pubkey, lamports: u64) -> Result<()>

pub fn deposit(&self, pubkey: &Pubkey, lamports: u64)

pub fn accounts(&self) -> Arc<Accounts>

pub fn set_inflation(&self, inflation: Inflation)

pub fn hard_forks(&self) -> Arc<RwLock<HardForks>>

pub fn get_account(&self, pubkey: &Pubkey) -> Option<Account>

pub fn get_account_modified_slot(
    &self,
    pubkey: &Pubkey
) -> Option<(Account, Slot)>

pub fn get_program_accounts(
    &self,
    program_id: &Pubkey
) -> Vec<(Pubkey, Account)>

pub fn get_all_accounts_with_modified_slots(
    &self
) -> Vec<(Pubkey, Account, Slot)>

pub fn get_program_accounts_modified_since_parent(
    &self,
    program_id: &Pubkey
) -> Vec<(Pubkey, Account)>

pub fn get_all_accounts_modified_since_parent(&self) -> Vec<(Pubkey, Account)>

pub fn get_account_modified_since_parent(
    &self,
    pubkey: &Pubkey
) -> Option<(Account, Slot)>

pub fn get_largest_accounts(
    &self,
    num: usize,
    filter_by_address: &HashSet<Pubkey>,
    filter: AccountAddressFilter
) -> Vec<(Pubkey, u64)>

pub fn transaction_count(&self) -> u64

pub fn signature_count(&self) -> u64

pub fn get_signature_status_processed_since_parent(
    &self,
    signature: &Signature
) -> Option<Result<()>>

pub fn get_signature_status_slot(
    &self,
    signature: &Signature
) -> Option<(Slot, Result<()>)>

pub fn get_signature_status(&self, signature: &Signature) -> Option<Result<()>>

pub fn has_signature(&self, signature: &Signature) -> bool

pub fn get_snapshot_storages(&self) -> SnapshotStorages

pub fn calculate_capitalization(&self) -> u64

pub fn calculate_and_verify_capitalization(&self) -> bool

pub fn set_capitalization(&self) -> u64

Forcibly overwrites current capitalization by actually recalculating accounts' balances. This should only be used for developing purposes.

pub fn get_accounts_hash(&self) -> Hash

pub fn update_accounts_hash(&self) -> Hash

pub fn verify_snapshot_bank(&self) -> bool

A snapshot bank should be purged of 0 lamport accounts which are not part of the hash calculation and could shield other real accounts.

pub fn hashes_per_tick(&self) -> &Option<u64>

Return the number of hashes per tick

pub fn ticks_per_slot(&self) -> u64

Return the number of ticks per slot

pub fn slots_per_year(&self) -> f64

Return the number of slots per year

pub fn tick_height(&self) -> u64

Return the number of ticks since genesis.

pub fn inflation(&self) -> Inflation

Return the inflation parameters of the Bank

pub fn capitalization(&self) -> u64

Return the total capitalization of the Bank

pub fn max_tick_height(&self) -> u64

Return this bank's max_tick_height

pub fn block_height(&self) -> u64

Return the block_height of this bank

pub fn get_slots_in_epoch(&self, epoch: Epoch) -> u64

Return the number of slots per epoch for the given epoch

pub fn get_leader_schedule_epoch(&self, slot: Slot) -> Epoch

returns the epoch for which this bank's leader_schedule_slot_offset and slot would need to cache leader_schedule

pub fn stake_delegations(&self) -> HashMap<Pubkey, Delegation>

current stake delegations for this bank Note: this method is exposed publicly for external usage

pub fn vote_accounts(&self) -> HashMap<Pubkey, (u64, Account)>

current vote accounts for this bank along with the stake attributed to each account

pub fn epoch_stakes(&self, epoch: Epoch) -> Option<&EpochStakes>

Get the EpochStakes for a given epoch

pub fn epoch_stakes_map(&self) -> &HashMap<Epoch, EpochStakes>

pub fn epoch_vote_accounts(
    &self,
    epoch: Epoch
) -> Option<&HashMap<Pubkey, (u64, Account)>>

vote accounts for the specific epoch along with the stake attributed to each account

pub fn epoch_authorized_voter(&self, vote_account: &Pubkey) -> Option<&Pubkey>

Get the fixed authorized voter for the given vote account for the current epoch

pub fn epoch_vote_accounts_for_node_id(
    &self,
    node_id: &Pubkey
) -> Option<&NodeVoteAccounts>

Get the fixed set of vote accounts for the given node id for the current epoch

pub fn total_epoch_stake(&self) -> u64

Get the fixed total stake of all vote accounts for current epoch

pub fn epoch_vote_account_stake(&self, vote_account: &Pubkey) -> u64

Get the fixed stake of the given vote account for the current epoch

pub fn get_epoch_and_slot_index(&self, slot: Slot) -> (Epoch, SlotIndex)

given a slot, return the epoch and offset into the epoch this slot falls e.g. with a fixed number for slots_per_epoch, the calculation is simply:

( slot/slots_per_epoch, slot % slots_per_epoch )

pub fn get_epoch_info(&self) -> EpochInfo

pub fn is_empty(&self) -> bool

pub fn add_builtin_program(
    &mut self,
    name: &str,
    program_id: Pubkey,
    process_instruction: ProcessInstruction
)

pub fn add_builtin_loader(
    &mut self,
    name: &str,
    program_id: Pubkey,
    process_instruction_with_context: ProcessInstructionWithContext
)

pub fn add_builtin(
    &mut self,
    name: &str,
    program_id: Pubkey,
    entrypoint: Entrypoint
)

Add an instruction processor to intercept instructions before the dynamic loader.

pub fn compare_bank(&self, dbank: &Bank)

pub fn clean_accounts(&self)

pub fn process_dead_slots(&self)

pub fn shrink_all_slots(&self)

pub fn print_accounts_stats(&self)

pub fn process_stale_slot_with_budget(
    &self,
    consumed_budget: usize,
    budget_recovery_delta: usize
) -> usize

pub fn secp256k1_program_enabled(&self) -> bool

Trait Implementations

impl AbiExample for Bank

fn example() -> Self

impl Default for Bank

fn default() -> Bank

Returns the "default value" for a type.

impl Drop for Bank

fn drop(&mut self)

Executes the destructor for this type.