Struct solana_sdk::rent::Rent

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#[repr(C)]pub struct Rent {
    pub lamports_per_byte_year: u64,
    pub exemption_threshold: f64,
    pub burn_percent: u8,
}

Fields

lamports_per_byte_year: u64

Rental rate

exemption_threshold: f64

exemption threshold, in years

burn_percent: u8

Implementations

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impl Rent

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pub fn calculate_burn(&self, rent_collected: u64) -> (u64, u64)

calculate how much rent to burn from the collected rent

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

minimum balance due for rent-exemption of a given size Account::data.len()

Note: a stripped-down version of this calculation is used in calculate_split_rent_exempt_reserve in the stake program. When this function is updated, – eg. when making rent variable – the stake program will need to be refactored

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pub fn is_exempt(&self, balance: u64, data_len: usize) -> bool

whether a given balance and data_len would be exempt

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pub fn due(&self, balance: u64, data_len: usize, years_elapsed: f64) -> RentDue

rent due on account’s data_len with balance

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pub fn due_amount(&self, data_len: usize, years_elapsed: f64) -> u64

rent due for account that is known to be not exempt

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pub fn free() -> Rent

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pub fn with_slots_per_epoch(slots_per_epoch: u64) -> Rent

Trait Implementations

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fn clone(&self) -> Rent

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for Rent

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

Formats the value using the given formatter. Read more

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impl Default for Rent

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fn default() -> Rent

Returns the “default value” for a type. Read more

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impl<'de> Deserialize<'de> for Rent

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fn deserialize<D>(
deserializer: D
) -> Result<Rent, <D as Deserializer<'de>>::Error> where
__D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

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impl PartialEq<Rent> for Rent

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

This method tests for self and other values to be equal, and is used by ==. Read more

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

This method tests for !=.

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impl Serialize for Rent

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fn serialize<S>(
 &self,
 serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
 S: Serializer,

Serialize this value into the given Serde serializer. Read more

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impl Sysvar for Rent

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fn get() -> Result<Rent, ProgramError>

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fn size_of() -> usize

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fn from_account_info(
account_info: &AccountInfo<'_>
) -> Result<Self, ProgramError>

Deserializes a sysvar from its AccountInfo. Read more

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fn to_account_info(&self, account_info: &mut AccountInfo<'_>) -> Option<()>

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impl SysvarId for Rent

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fn id() -> Pubkey

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fn check_id(pubkey: &Pubkey) -> bool

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impl Copy for Rent

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impl StructuralPartialEq for Rent

Auto Trait Implementations

impl RefUnwindSafe for Rent

impl Send for Rent

impl Sync for Rent

impl Unpin for Rent

impl UnwindSafe for Rent

Blanket Implementations

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impl<T> AbiEnumVisitor for T where
T: Serialize + AbiExample + ?Sized,

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default fn visit_for_abi(
&self,
digester: &mut AbiDigester
) -> Result<AbiDigester, DigestError>

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impl<T> AbiEnumVisitor for T where
T: Serialize + ?Sized,

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default fn visit_for_abi(
&self,
_digester: &mut AbiDigester
) -> Result<AbiDigester, DigestError>

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impl<T> AbiExample for T

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default fn example() -> T

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn vzip(self) -> V

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Struct solana_sdk::rent::Rent

Fields

Implementations

impl Rent

pub fn calculate_burn(&self, rent_collected: u64) -> (u64, u64)

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

pub fn is_exempt(&self, balance: u64, data_len: usize) -> bool

pub fn due(&self, balance: u64, data_len: usize, years_elapsed: f64) -> RentDue

pub fn due_amount(&self, data_len: usize, years_elapsed: f64) -> u64

pub fn free() -> Rent

pub fn with_slots_per_epoch(slots_per_epoch: u64) -> Rent

Trait Implementations

impl AbiExample for Rent

fn example() -> Rent

impl Clone for Rent

fn clone(&self) -> Rent

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

impl Debug for Rent

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

impl Default for Rent

fn default() -> Rent

impl<'de> Deserialize<'de> for Rent

fn deserialize<__D>( __deserializer: __D) -> Result<Rent, <__D as Deserializer<'de>>::Error> where __D: Deserializer<'de>,

impl PartialEq<Rent> for Rent

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

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

impl Serialize for Rent

fn serialize<__S>( &self, __serializer: __S) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error> where __S: Serializer,

impl Sysvar for Rent

fn get() -> Result<Rent, ProgramError>

fn size_of() -> usize

fn from_account_info( account_info: &AccountInfo<'_>) -> Result<Self, ProgramError>

fn to_account_info(&self, account_info: &mut AccountInfo<'_>) -> Option<()>

impl SysvarId for Rent

fn id() -> Pubkey

fn check_id(pubkey: &Pubkey) -> bool

impl Copy for Rent

impl StructuralPartialEq for Rent

Auto Trait Implementations

impl RefUnwindSafe for Rent

impl Send for Rent

impl Sync for Rent

impl Unpin for Rent

impl UnwindSafe for Rent

Blanket Implementations

impl<T> AbiEnumVisitor for T where T: Serialize + AbiExample + ?Sized,

default fn visit_for_abi( &self, digester: &mut AbiDigester) -> Result<AbiDigester, DigestError>

impl<T> AbiEnumVisitor for T where T: Serialize + ?Sized,

default fn visit_for_abi( &self, _digester: &mut AbiDigester) -> Result<AbiDigester, DigestError>

impl<T> AbiExample for T

default fn example() -> T

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

fn deserialize<D>(
deserializer: D
) -> Result<Rent, <D as Deserializer<'de>>::Error> where
__D: Deserializer<'de>,

fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,

fn from_account_info(
account_info: &AccountInfo<'_>
) -> Result<Self, ProgramError>

impl<T> AbiEnumVisitor for T where
T: Serialize + AbiExample + ?Sized,

default fn visit_for_abi(
&self,
digester: &mut AbiDigester
) -> Result<AbiDigester, DigestError>

impl<T> AbiEnumVisitor for T where
T: Serialize + ?Sized,

default fn visit_for_abi(
&self,
_digester: &mut AbiDigester
) -> Result<AbiDigester, DigestError>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

impl<T> DeserializeOwned for T where
T: for<'de> Deserialize<'de>,