Struct solana_runtime::accounts_db::AccountStorageEntry

pub struct AccountStorageEntry {
    pub(crate) id: AtomicAppendVecId,
    pub(crate) slot: AtomicU64,
    pub(crate) accounts: AccountsFile,
    count_and_status: RwLock<(usize, AccountStorageStatus)>,
    approx_store_count: AtomicUsize,
    alive_bytes: AtomicUsize,
}

Persistent storage structure holding the accounts

Fields

id: AtomicAppendVecId

slot: AtomicU64

accounts: AccountsFile

storage holding the accounts

count_and_status: RwLock<(usize, AccountStorageStatus)>

Keeps track of the number of accounts stored in a specific AppendVec. This is periodically checked to reuse the stores that do not have any accounts in it status corresponding to the storage, lets us know that the append_vec, once maxed out, then emptied, can be reclaimed

approx_store_count: AtomicUsize

This is the total number of accounts stored ever since initialized to keep track of lifetime count of all store operations. And this differs from count_and_status in that this field won’t be decremented.

This is used as a rough estimate for slot shrinking. As such a relaxed use case, this value ARE NOT strictly synchronized with count_and_status!

alive_bytes: AtomicUsize

Implementations

impl AccountStorageEntry

pub fn new(path: &Path, slot: Slot, id: AppendVecId, file_size: u64) -> Self

pub(crate) fn new_existing( slot: Slot, id: AppendVecId, accounts: AccountsFile, num_accounts: usize ) -> Self

pub fn set_status(&self, status: AccountStorageStatus)

pub fn recycle(&self, slot: Slot, id: AppendVecId)

pub fn status(&self) -> AccountStorageStatus

pub fn count(&self) -> usize

pub fn approx_stored_count(&self) -> usize

pub fn alive_bytes(&self) -> usize

pub fn written_bytes(&self) -> u64

pub fn capacity(&self) -> u64

pub fn has_accounts(&self) -> bool

pub fn slot(&self) -> Slot

pub fn append_vec_id(&self) -> AppendVecId

pub fn flush(&self) -> Result<(), IoError>

fn get_stored_account_meta( &self, offset: usize ) -> Option<StoredAccountMeta<'_>>

fn add_account(&self, num_bytes: usize)

fn try_available(&self) -> bool

pub fn all_accounts(&self) -> Vec<StoredAccountMeta<'_>>

fn remove_account(&self, num_bytes: usize, reset_accounts: bool) -> usize

pub fn get_path(&self) -> PathBuf

Trait Implementations

impl Debug for AccountStorageEntry

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

Formats the value using the given formatter.

impl From<&AccountStorageEntry> for SerializableAccountStorageEntry

fn from(rhs: &AccountStorageEntry) -> Self

Converts to this type from the input type.