Struct solana_runtime::accounts_db::AccountsDb

pub struct AccountsDb {

    pub accounts_index: AccountsIndex<AccountInfo>,
    pub storage: AccountStorage,
    pub accounts_cache: AccountsCache,
    pub read_only_accounts_cache: ReadOnlyAccountsCache,
    pub next_id: AtomicUsize,
    pub shrink_candidate_slots: Mutex<HashMap<Slot, HashMap<AppendVecId, Arc<AccountStorageEntry>>>>,
    pub shrink_candidate_slots_v1: Mutex<Vec<Slot>>,
    pub shrink_paths: RwLock<Option<Vec<PathBuf>>>,
    pub thread_pool: ThreadPool,
    pub thread_pool_clean: ThreadPool,
    pub bank_hashes: RwLock<HashMap<Slot, BankHashInfo>>,
    pub cluster_type: Option<ClusterType>,
    pub account_indexes: AccountSecondaryIndexes,
    pub caching_enabled: bool,
    // some fields omitted
}

Fields

accounts_index: AccountsIndex<AccountInfo>

Keeps tracks of index into AppendVec on a per slot basis

storage: AccountStorage

accounts_cache: AccountsCache

read_only_accounts_cache: ReadOnlyAccountsCache

next_id: AtomicUsize

distribute the accounts across storage lists

shrink_candidate_slots: Mutex<HashMap<Slot, HashMap<AppendVecId, Arc<AccountStorageEntry>>>>

Set of shrinkable stores organized by map of slot to append_vec_id

shrink_candidate_slots_v1: Mutex<Vec<Slot>>

Legacy shrink slots to support non-cached code-path.

shrink_paths: RwLock<Option<Vec<PathBuf>>>

thread_pool: ThreadPool

Thread pool used for par_iter

thread_pool_clean: ThreadPool

bank_hashes: RwLock<HashMap<Slot, BankHashInfo>>

cluster_type: Option<ClusterType>

account_indexes: AccountSecondaryIndexes

caching_enabled: bool

Implementations

impl AccountsDb

pub fn notify_account_restore_from_snapshot(&self)

Notify the plugins of of account data when AccountsDb is restored from a snapshot. The data is streamed in the reverse order of the slots so that an account is only streamed once. At a slot, if the accounts is updated multiple times only the last write (with highest write_version) is notified.

pub fn notify_account_at_accounts_update(
    &self,
    slot: Slot,
    meta: &StoredMeta,
    account: &AccountSharedData
)

impl AccountsDb

pub fn new(paths: Vec<PathBuf>, cluster_type: &ClusterType) -> Self

pub fn new_for_tests_with_caching(
    paths: Vec<PathBuf>,
    cluster_type: &ClusterType
) -> Self

pub fn new_with_config(
    paths: Vec<PathBuf>,
    cluster_type: &ClusterType,
    account_indexes: AccountSecondaryIndexes,
    caching_enabled: bool,
    shrink_ratio: AccountShrinkThreshold,
    accounts_update_notifier: Option<AccountsUpdateNotifier>
) -> Self

pub fn set_shrink_paths(&self, paths: Vec<PathBuf>)

pub fn file_size(&self) -> u64

pub fn new_single() -> Self

pub fn new_single_for_tests_with_caching() -> Self

pub fn expected_cluster_type(&self) -> ClusterType

pub fn clean_accounts(&self, max_clean_root: Option<Slot>, is_startup: bool)

pub fn shrink_candidate_slots(&self) -> usize

pub fn shrink_all_slots(&self, is_startup: bool)

pub fn scan_accounts<F, A>(
    &self,
    ancestors: &Ancestors,
    bank_id: BankId,
    scan_func: F
) -> ScanResult<A> where
    F: Fn(&mut A, Option<(&Pubkey, AccountSharedData, Slot)>),
    A: Default, 

pub fn unchecked_scan_accounts<F, A>(
    &self,
    metric_name: &'static str,
    ancestors: &Ancestors,
    scan_func: F
) -> A where
    F: Fn(&mut A, (&Pubkey, LoadedAccount<'_>, Slot)),
    A: Default, 

pub fn range_scan_accounts<F, A, R>(
    &self,
    metric_name: &'static str,
    ancestors: &Ancestors,
    range: R,
    scan_func: F
) -> A where
    F: Fn(&mut A, Option<(&Pubkey, AccountSharedData, Slot)>),
    A: Default,
    R: RangeBounds<Pubkey>, 

pub fn index_scan_accounts<F, A>(
    &self,
    ancestors: &Ancestors,
    bank_id: BankId,
    index_key: IndexKey,
    scan_func: F
) -> ScanResult<(A, bool)> where
    F: Fn(&mut A, Option<(&Pubkey, AccountSharedData, Slot)>),
    A: Default, 

pub fn scan_account_storage<R, B>(
    &self,
    slot: Slot,
    cache_map_func: impl Fn(LoadedAccount<'_>) -> Option<R> + Sync,
    storage_scan_func: impl Fn(&B, LoadedAccount<'_>) + Sync
) -> ScanStorageResult<R, B> where
    R: Send,
    B: Send + Default + Sync, 

Scan a specific slot through all the account storage in parallel

pub fn set_hash(&self, slot: Slot, parent_slot: Slot)

pub fn load(
    &self,
    ancestors: &Ancestors,
    pubkey: &Pubkey,
    load_hint: LoadHint
) -> Option<(AccountSharedData, Slot)>

pub fn load_with_fixed_root(
    &self,
    ancestors: &Ancestors,
    pubkey: &Pubkey
) -> Option<(AccountSharedData, Slot)>

pub fn load_without_fixed_root(
    &self,
    ancestors: &Ancestors,
    pubkey: &Pubkey
) -> Option<(AccountSharedData, Slot)>

pub fn load_account_hash(
    &self,
    ancestors: &Ancestors,
    pubkey: &Pubkey,
    max_root: Option<Slot>,
    load_hint: LoadHint
) -> Option<Hash>

pub fn create_drop_bank_callback(
    &self,
    pruned_banks_sender: DroppedSlotsSender
) -> SendDroppedBankCallback

pub fn purge_slot(&self, slot: Slot, bank_id: BankId, is_from_abs: bool)

This should only be called after the Bank::drop() runs in bank.rs, See BANK_DROP_SAFETY comment below for more explanation. is_from_abs is true if the caller is the AccountsBackgroundService

pub fn remove_unrooted_slots(&self, remove_slots: &[(Slot, BankId)])

pub fn hash_stored_account(slot: Slot, account: &StoredAccountMeta<'_>) -> Hash

pub fn hash_account<T: ReadableAccount>(
    slot: Slot,
    account: &T,
    pubkey: &Pubkey
) -> Hash

pub fn mark_slot_frozen(&self, slot: Slot)

pub fn expire_old_recycle_stores(&self)

pub fn flush_accounts_cache(
    &self,
    force_flush: bool,
    requested_flush_root: Option<Slot>
)

pub fn checked_iterative_sum_for_capitalization(
    total_cap: u64,
    new_cap: u64
) -> u64

pub fn checked_sum_for_capitalization<T: Iterator<Item = u64>>(
    balances: T
) -> u64

pub fn get_accounts_hash(&self, slot: Slot) -> Hash

pub fn update_accounts_hash(
    &self,
    slot: Slot,
    ancestors: &Ancestors
) -> (Hash, u64)

pub fn update_accounts_hash_test(
    &self,
    slot: Slot,
    ancestors: &Ancestors
) -> (Hash, u64)

pub fn update_accounts_hash_with_index_option(
    &self,
    use_index: bool,
    debug_verify: bool,
    slot: Slot,
    ancestors: &Ancestors,
    expected_capitalization: Option<u64>,
    can_cached_slot_be_unflushed: bool,
    slots_per_epoch: Option<Slot>
) -> (Hash, u64)

pub fn calculate_accounts_hash_without_index(
    storages: &SortedStorages<'_>,
    thread_pool: Option<&ThreadPool>,
    stats: HashStats,
    check_hash: bool,
    accounts_cache_and_ancestors: Option<(&AccountsCache, &Ancestors, &AccountsIndex<AccountInfo>)>
) -> Result<(Hash, u64), BankHashVerificationError>

pub fn verify_bank_hash_and_lamports(
    &self,
    slot: Slot,
    ancestors: &Ancestors,
    total_lamports: u64,
    test_hash_calculation: bool
) -> Result<(), BankHashVerificationError>

pub fn scan_slot_and_insert_dirty_pubkeys_into_uncleaned_pubkeys(
    &self,
    slot: Slot
)

Scan a slot in the account storage for dirty pubkeys and insert them into the list of uncleaned pubkeys

This function is called in Bank::drop() when the bank is not frozen, so that its pubkeys are considered for cleanup.

pub fn get_accounts_delta_hash(&self, slot: Slot) -> Hash

pub fn store_cached(
    &self,
    slot: Slot,
    accounts: &[(&Pubkey, &AccountSharedData)]
)

pub fn store_uncached(
    &self,
    slot: Slot,
    accounts: &[(&Pubkey, &AccountSharedData)]
)

Store the account update.

pub fn add_root(&self, slot: Slot) -> AccountsAddRootTiming

pub fn get_snapshot_storages(
    &self,
    snapshot_slot: Slot,
    ancestors: Option<&Ancestors>
) -> (SnapshotStorages, Vec<Slot>)

pub fn generate_index(&self, limit_load_slot_count_from_snapshot: Option<usize>)

impl AccountsDb

Legacy shrink functions to support non-cached path. Should be able to be deleted after cache path is the only path.

pub fn process_stale_slot_v1(&self) -> usize

Trait Implementations

impl Debug for AccountsDb

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AccountsDb

fn default() -> Self

Returns the “default value” for a type.