Struct rusk_vm::GasMeter

source · [−]

pub struct GasMeter { /* private fields */ }

Expand description

Struct to keep track of gas usage

Implementations

impl GasMeter

pub const RESERVE_PERCENTAGE: u64

Default percentage of gas to be given to a GasMeter when limited is called.

pub fn with_limit(limit: Gas) -> GasMeter

Creates a new GasMeter with given gas limits

pub fn charge(&mut self, amount: Gas) -> Result<(), GasError>

Deduct specified amount of gas from the meter

pub fn set_left(&mut self, new_left: Gas)

Mutates the left gas amount

pub fn left(&self) -> Gas

Returns how much gas left from the initial budget.

pub fn limit(&self) -> Gas

Returns the gas limit.

pub fn spent(&self) -> Gas

Returns how much gas was actually spent.

pub fn limited(&self, limit: Gas) -> GasMeter

Create a new limited GasMeter. If limit parameter is 0, default limit is assumed that satisfies the requirement for obligatory gas reserve (Self::RESERVE_PERCENTAGE of the gas left). The limit provided cannot exceed the gas left, if that happens the total amount of gas is used as limit.

Trait Implementations

impl Clone for GasMeter

fn clone(&self) -> GasMeter

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl Debug for GasMeter

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl RefUnwindSafe for GasMeter

impl Send for GasMeter

impl Sync for GasMeter

impl Unpin for GasMeter

impl UnwindSafe for GasMeter

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.

pub fn pointer_metadata(
&<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
    W: DeserializeWith<F, T, D>,
    D: Fallible + ?Sized,
    F: ?Sized,

pub fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>

Deserializes using the given deserializer

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Performs the conversion.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

impl<T> Keyed<T> for T

pub fn key(&self) -> &T

Return a reference to the key of the leaf type

impl<T> Pointable for T

pub const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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

Initializes a with the given initializer. Read more

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

Dereferences the given pointer. Read more

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

Mutably dereferences the given pointer. Read more

pub unsafe fn drop(ptr: usize)

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

impl<T> Pointee for T

type Metadata = ()

The type for metadata in pointers and references to Self.

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

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

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

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

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more