Struct InstrumentedTrieCursor 

pub struct InstrumentedTrieCursor<C> { /* private fields */ }

Available on crate feature metrics only.

A wrapper around a TrieCursor that tracks metrics for cursor operations.

Counters are recorded into the supplied metric handles when the cursor is dropped.

This implementation counts the number of times each cursor operation is called:

• next() - Move to the next entry
• seek() - Seek to a key or the next greater key
• seek_exact() - Seek to an exact key match

Trait Implementations

impl<C: Debug> Debug for InstrumentedTrieCursor<C>

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

Formats the value using the given formatter.

impl<C> Drop for InstrumentedTrieCursor<C>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics #130494)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<C: TrieCursor> TrieCursor for InstrumentedTrieCursor<C>

fn seek_exact( &mut self, key: Nibbles, ) -> Result<Option<(Nibbles, BranchNodeCompact)>, DatabaseError>

Move the cursor to the key and return if it is an exact match.

fn seek( &mut self, key: Nibbles, ) -> Result<Option<(Nibbles, BranchNodeCompact)>, DatabaseError>

Move the cursor to the key and return a value matching of greater than the key.

fn next( &mut self, ) -> Result<Option<(Nibbles, BranchNodeCompact)>, DatabaseError>

Move the cursor to the next key.

fn current(&mut self) -> Result<Option<Nibbles>, DatabaseError>

Get the current entry.

fn reset(&mut self)

Reset the cursor to the beginning.

impl<C: TrieStorageCursor> TrieStorageCursor for InstrumentedTrieCursor<C>

fn set_hashed_address(&mut self, hashed_address: B256)

Set the hashed address for the storage trie cursor.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.