Struct RentConfig 

#[repr(C)]
pub struct RentConfig {
    pub base_rent: u16,
    pub compression_cost: u16,
    pub lamports_per_byte_per_epoch: u8,
    pub max_funded_epochs: u8,
    pub max_top_up: u16,
}

Rent function parameters, used to calculate whether the account is compressible.

Fields

base_rent: u16

Base rent constant: rent = base_rent + num_bytes * lamports_per_byte_per_epoch

compression_cost: u16

lamports_per_byte_per_epoch: u8

max_funded_epochs: u8

max_top_up: u16

Maximum lamports that can be charged per top-up operation. Protects against griefing by accounts with high lamports_per_write.

Implementations

impl RentConfig

pub const LEN: usize

impl RentConfig

pub fn rent_curve_per_epoch(&self, num_bytes: u64) -> u64

pub fn get_rent(&self, num_bytes: u64, epochs: u64) -> u64

pub fn get_rent_with_compression_cost(&self, num_bytes: u64, epochs: u64) -> u64

Trait Implementations

impl BorshDeserialize for RentConfig

where u16: BorshDeserialize, u8: BorshDeserialize,

fn deserialize_reader<R>(reader: &mut R) -> Result<RentConfig, Error>

where R: Read,

fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.

fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.

fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>

where R: Read,

impl BorshSerialize for RentConfig

where u16: BorshSerialize, u8: BorshSerialize,

fn serialize<W>(&self, writer: &mut W) -> Result<(), Error>

where W: Write,

fn try_to_vec(&self) -> Result<Vec<u8>, Error>

Serialize this instance into a vector of bytes.

impl Clone for RentConfig

fn clone(&self) -> RentConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RentConfig

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

Formats the value using the given formatter.

impl Default for RentConfig

fn default() -> RentConfig

Returns the “default value” for a type.

impl Hash for RentConfig

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for RentConfig

fn eq(&self, other: &RentConfig) -> 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 RentConfigTrait for RentConfig

fn base_rent(&self) -> u64

Get the base rent value

fn compression_cost(&self) -> u64

Get the compression cost

fn lamports_per_byte_per_epoch(&self) -> u64

Get lamports per byte per epoch

fn max_funded_epochs(&self) -> u64

Get maximum funded epochs

fn max_top_up(&self) -> u64

Get maximum top-up amount per write operation

fn rent_curve_per_epoch(&self, num_bytes: u64) -> u64

Calculate rent per epoch for a given number of bytes

fn get_rent(&self, num_bytes: u64, epochs: u64) -> u64

Calculate total rent for given bytes and epochs

fn get_rent_with_compression_cost(&self, num_bytes: u64, epochs: u64) -> u64

Calculate total rent including compression cost

impl<'a> ZeroCopyAt<'a> for RentConfig

type ZeroCopyAt = ZRentConfig<'a>

fn zero_copy_at( __remaining_bytes: &'a [u8], ) -> Result<(<RentConfig as ZeroCopyAt<'a>>::ZeroCopyAt, &'a [u8]), ZeroCopyError>

impl<'a> ZeroCopyAtMut<'a> for RentConfig

type ZeroCopyAtMut = ZRentConfigMut<'a>

fn zero_copy_at_mut( __remaining_bytes: &'a mut [u8], ) -> Result<(<RentConfig as ZeroCopyAtMut<'a>>::ZeroCopyAtMut, &'a mut [u8]), ZeroCopyError>

impl<'a> ZeroCopyNew<'a> for RentConfig

type ZeroCopyConfig = ()

Configuration type needed to initialize this type

type Output = <RentConfig as ZeroCopyAtMut<'a>>::ZeroCopyAtMut

Output type - the mutable zero-copy view of this type

fn byte_len( config: &<RentConfig as ZeroCopyNew<'a>>::ZeroCopyConfig, ) -> Result<usize, ZeroCopyError>

Calculate the byte length needed for this type with the given configuration

fn new_zero_copy( __remaining_bytes: &'a mut [u8], config: <RentConfig as ZeroCopyNew<'a>>::ZeroCopyConfig, ) -> Result<(<RentConfig as ZeroCopyNew<'a>>::Output, &'a mut [u8]), ZeroCopyError>

Initialize this type in a mutable byte slice with the given configuration

impl ZeroCopyStructInner for RentConfig

type ZeroCopyInner = ZRentConfig<'static>

impl ZeroCopyStructInnerMut for RentConfig

type ZeroCopyInnerMut = ZRentConfigMut<'static>

impl Zeroable for RentConfig

fn zeroed() -> Self

Calls zeroed.

impl Copy for RentConfig

impl Eq for RentConfig

impl Pod for RentConfig

impl StructuralPartialEq for RentConfig