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committee cache: avoid spurious recomputes

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Check that the committeee cache matches the absolute epoch for the relative epoch, rather than
always checking the previous epoch.
This commit is contained in:
Michael Sproul 2019-06-12 15:40:48 +10:00
parent 44bccda4b3
commit 64dca6fba7
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GPG Key ID: 77B1309D2E54E914
1 changed files with 5 additions and 1 deletions
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6
eth2/types/src/beacon_state.rs
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@ -110,7 +110,9 @@ where
pub current_crosslinks: FixedLenVec<Crosslink, T::ShardCount>,
pub previous_crosslinks: FixedLenVec<Crosslink, T::ShardCount>,
pub latest_block_roots: FixedLenVec<Hash256, T::SlotsPerHistoricalRoot>,
#[compare_fields(as_slice)]
latest_state_roots: FixedLenVec<Hash256, T::SlotsPerHistoricalRoot>,
#[compare_fields(as_slice)]
latest_active_index_roots: FixedLenVec<Hash256, T::LatestActiveIndexRootsLength>,
latest_slashed_balances: FixedLenVec<u64, T::LatestSlashedExitLength>,
pub latest_block_header: BeaconBlockHeader,
@ -795,7 +797,9 @@ impl<T: EthSpec> BeaconState<T> {
) -> Result<(), Error> {
let i = Self::cache_index(relative_epoch);
if self.committee_caches[i].is_initialized_at(self.previous_epoch()) {
if self.committee_caches[i]
.is_initialized_at(relative_epoch.into_epoch(self.current_epoch()))
{
Ok(())
} else {
self.force_build_committee_cache(relative_epoch, spec)