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Check HeadState First (#4830)

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* easy optimization
* Merge refs/heads/master into easyOptimization
* cache miss
This commit is contained in:
Nishant Das 2020-02-12 00:22:51 +08:00 committed by GitHub
parent 8c90e38770
commit 601f93a0a1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 26 additions and 0 deletions
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19
beacon-chain/blockchain/process_attestation_helpers.go
View File

@ -1,6 +1,7 @@
package blockchain
import (
"bytes"
"context"
"fmt"
@ -28,6 +29,24 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (*sta
return cachedState, nil
}
headRoot, err := s.HeadRoot(ctx)
if err != nil {
return nil, errors.Wrapf(err, "could not get head root")
}
if bytes.Equal(headRoot, c.Root) {
st, err := s.HeadState(ctx)
if err != nil {
return nil, errors.Wrapf(err, "could not get head state")
}
if err := s.checkpointState.AddCheckpointState(&cache.CheckpointState{
Checkpoint: c,
State: st.Copy(),
}); err != nil {
return nil, errors.Wrap(err, "could not saved checkpoint state to cache")
}
return st, nil
}
baseState, err := s.beaconDB.State(ctx, bytesutil.ToBytes32(c.Root))
if err != nil {
return nil, errors.Wrapf(err, "could not get pre state for slot %d", helpers.StartSlot(c.Epoch))

7
beacon-chain/blockchain/process_block_helpers.go
View File

@ -73,6 +73,13 @@ func (s *Service) verifyBlkPreState(ctx context.Context, b *ethpb.BeaconBlock) (
}
return preState.Copy(), nil
}
headRoot, err := s.HeadRoot(ctx)
if err != nil {
return nil, errors.Wrapf(err, "could not get head root")
}
if bytes.Equal(headRoot, b.ParentRoot) {
return s.HeadState(ctx)
}
preState, err := s.beaconDB.State(ctx, bytesutil.ToBytes32(b.ParentRoot))
if err != nil {