Struct AccountsDataMeter 

pub struct AccountsDataMeter { /* private fields */ }

Meter and track the amount of available accounts data space

Implementations

impl AccountsDataMeter

pub fn new(initial_accounts_data_len: u64) -> Self

Make a new AccountsDataMeter

pub fn maximum(&self) -> u64

Return the maximum amount of accounts data space that can be used (in bytes)

pub fn initial(&self) -> u64

Return the initial amount of accounts data space used (in bytes)

pub fn delta(&self) -> i64

Return the amount of accounts data space that has changed (in bytes)

pub fn current(&self) -> u64

Return the current amount of accounts data space used (in bytes)

pub fn remaining(&self) -> u64

Get the remaining amount of accounts data space (in bytes)

pub fn adjust_delta(&mut self, amount: i64) -> Result<(), InstructionError>

Adjust the space used by accounts data by amount (in bytes).

If amount is positive, we increase the space used by accounts data. If amount is negative, we decrease the space used by accounts data. If amount is greater than the remaining space, return an error and do not adjust accounts data space.

pub fn adjust_delta_unchecked(&mut self, amount: i64)

Unconditionally adjust accounts data space. Refer to adjust_delta() for more documentation.

Trait Implementations

impl Clone for AccountsDataMeter

fn clone(&self) -> AccountsDataMeter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AccountsDataMeter

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

Formats the value using the given formatter.

impl Default for AccountsDataMeter

fn default() -> AccountsDataMeter

Returns the “default value” for a type.

impl PartialEq for AccountsDataMeter

fn eq(&self, other: &AccountsDataMeter) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AccountsDataMeter

impl Eq for AccountsDataMeter

impl StructuralPartialEq for AccountsDataMeter