Enum reth_stages::stages::MerkleStage

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pub enum MerkleStage {
    Execution {
        clean_threshold: u64,
    },
    Unwind,
    Both {
        clean_threshold: u64,
    },
}
Expand description

The merkle hashing stage uses input from AccountHashingStage and StorageHashingStage to calculate intermediate hashes and state roots.

This stage should be run with the above two stages, otherwise it is a no-op.

This stage is split in two: one for calculating hashes and one for unwinding.

When run in execution, it’s going to be executed AFTER the hashing stages, to generate the state root. When run in unwind mode, it’s going to be executed BEFORE the hashing stages, so that it unwinds the intermediate hashes based on the unwound hashed state from the hashing stages. The order of these two variants is important. The unwind variant should be added to the pipeline before the execution variant.

An example pipeline to only hash state would be:

Variants§

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Execution

The execution portion of the merkle stage.

Fields

§clean_threshold: u64

The threshold (in number of blocks) for switching from incremental trie building of changes to whole rebuild.

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Unwind

The unwind portion of the merkle stage.

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Both

Available on crate feature test-utils only.

Able to execute and unwind. Used for tests

Fields

§clean_threshold: u64

The threshold (in number of blocks) for switching from incremental trie building of changes to whole rebuild.

Implementations§

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impl MerkleStage

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pub const fn default_execution() -> Self

Stage default for the MerkleStage::Execution.

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pub const fn default_unwind() -> Self

Stage default for the MerkleStage::Unwind.

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pub const fn new_execution(clean_threshold: u64) -> Self

Create new instance of MerkleStage::Execution.

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pub fn get_execution_checkpoint<DB: Database>( &self, provider: &DatabaseProviderRW<DB>, ) -> Result<Option<MerkleCheckpoint>, StageError>

Gets the hashing progress

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pub fn save_execution_checkpoint<DB: Database>( &self, provider: &DatabaseProviderRW<DB>, checkpoint: Option<MerkleCheckpoint>, ) -> Result<(), StageError>

Saves the hashing progress

Trait Implementations§

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impl Clone for MerkleStage

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fn clone(&self) -> MerkleStage

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 MerkleStage

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

Formats the value using the given formatter. Read more
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impl<DB: Database> Stage<DB> for MerkleStage

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fn id(&self) -> StageId

Return the id of the stage

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fn execute( &mut self, provider: &DatabaseProviderRW<DB>, input: ExecInput, ) -> Result<ExecOutput, StageError>

Execute the stage.

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fn unwind( &mut self, provider: &DatabaseProviderRW<DB>, input: UnwindInput, ) -> Result<UnwindOutput, StageError>

Unwind the stage.

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fn poll_execute_ready( &mut self, _cx: &mut Context<'_>, _input: ExecInput, ) -> Poll<Result<(), StageError>>

Returns Poll::Ready(Ok(())) when the stage is ready to execute the given range. Read more
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fn post_execute_commit(&mut self) -> Result<(), StageError>

Post execution commit hook. Read more
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fn post_unwind_commit(&mut self) -> Result<(), StageError>

Post unwind commit hook. Read more

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Size: 16 bytes

Size for each variant:

  • Execution: 8 bytes
  • Unwind: 0 bytes
  • Both: 8 bytes