pallet_evm::runner::meter

Struct StorageMeter

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pub struct StorageMeter { /* private fields */ }
Expand description

A meter for tracking the storage growth.

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impl StorageMeter

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pub fn new(limit: u64) -> Self

Creates a new storage meter with the given limit.

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pub fn record(&mut self, amount: u64) -> Result<(), MeterError>

Records the given amount of storage usage. The amount is added to the current usage. If the limit is reached, an error is returned.

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pub fn record_dynamic_opcode_cost( &mut self, _opcode: Opcode, gas_cost: GasCost, target: StorageTarget, ) -> Result<(), MeterError>

Records the storage growth for the given Opcode.

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pub fn usage(&self) -> u64

Returns the current usage of storage.

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pub fn limit(&self) -> u64

Returns the limit of storage.

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pub fn available(&self) -> u64

Returns the amount of storage that is available before the limit is reached.

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pub fn storage_to_gas(&self, ratio: u64) -> u64

Map storage usage to the gas cost.

Trait Implementations§

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impl Clone for StorageMeter

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fn clone(&self) -> StorageMeter

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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