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docs: misc in memory docs #11365

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Oct 1, 2024
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docs: misc in memory docs #11365

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11 changes: 8 additions & 3 deletions crates/chain-state/src/in_memory.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,9 @@ impl CanonicalInMemoryState {
}

/// Append new blocks to the in memory state.
///
/// This removes all reorged blocks and appends the new blocks to the tracked chain and connects
/// them to their parent blocks.
fn update_blocks<I>(&self, new_blocks: I, reorged: I)
where
I: IntoIterator<Item = ExecutedBlock>,
Expand Down Expand Up @@ -316,16 +319,18 @@ impl CanonicalInMemoryState {
// clear all numbers
numbers.clear();

// drain all blocks and only keep the ones that are not persisted
// drain all blocks and only keep the ones that are not persisted (below the persisted
// height)
let mut old_blocks = blocks
.drain()
.filter(|(_, b)| b.block().block().number > persisted_height)
.map(|(_, b)| b.block.clone())
.filter(|b| b.block().number > persisted_height)
.collect::<Vec<_>>();

// sort the blocks by number so we can insert them back in natural order (low -> high)
old_blocks.sort_unstable_by_key(|block| block.block().number);

// re-insert the blocks in natural order and connect them to their parent blocks
for block in old_blocks {
let parent = blocks.get(&block.block().parent_hash).cloned();
let block_state = BlockState::with_parent(block.clone(), parent);
Expand Down Expand Up @@ -410,7 +415,7 @@ impl CanonicalInMemoryState {
self.inner.chain_info_tracker.on_transition_configuration_exchanged();
}

/// Returns the timepstamp of the last transition configuration exchanged,
/// Returns the timestamp of the last transition configuration exchanged,
pub fn last_exchanged_transition_configuration_timestamp(&self) -> Option<Instant> {
self.inner.chain_info_tracker.last_transition_configuration_exchanged_at()
}
Expand Down
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