From 4c90efdf57ce87edf0d855c8cec10525875a6ab1 Mon Sep 17 00:00:00 2001 From: Martin Holst Swende Date: Tue, 30 Apr 2019 15:42:36 +0200 Subject: [PATCH] consensus,core,miner: avoid overhead of creating a new block (#19301) * consensus,core,miner: avoid overhead of creating a new block * consensus: nitpick dot * consensus: fix some comment formatting nits --- consensus/clique/clique.go | 12 ++++++++++-- consensus/consensus.go | 11 ++++++++++- consensus/ethash/consensus.go | 12 ++++++++++-- core/chain_makers.go | 2 +- core/state_processor.go | 2 +- miner/worker.go | 2 +- 6 files changed, 33 insertions(+), 8 deletions(-) diff --git a/consensus/clique/clique.go b/consensus/clique/clique.go index 6bdee6dd5..4caa9dc74 100644 --- a/consensus/clique/clique.go +++ b/consensus/clique/clique.go @@ -548,8 +548,16 @@ func (c *Clique) Prepare(chain consensus.ChainReader, header *types.Header) erro } // Finalize implements consensus.Engine, ensuring no uncles are set, nor block -// rewards given, and returns the final block. -func (c *Clique) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { +// rewards given. +func (c *Clique) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header) { + // No block rewards in PoA, so the state remains as is and uncles are dropped + header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) + header.UncleHash = types.CalcUncleHash(nil) +} + +// FinalizeAndAssemble implements consensus.Engine, ensuring no uncles are set, +// nor block rewards given, and returns the final block. +func (c *Clique) FinalizeAndAssemble(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { // No block rewards in PoA, so the state remains as is and uncles are dropped header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) header.UncleHash = types.CalcUncleHash(nil) diff --git a/consensus/consensus.go b/consensus/consensus.go index 487b07be7..f753af550 100644 --- a/consensus/consensus.go +++ b/consensus/consensus.go @@ -80,10 +80,19 @@ type Engine interface { Prepare(chain ChainReader, header *types.Header) error // Finalize runs any post-transaction state modifications (e.g. block rewards) - // and assembles the final block. + // but does not assemble the block. + // // Note: The block header and state database might be updated to reflect any // consensus rules that happen at finalization (e.g. block rewards). Finalize(chain ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, + uncles []*types.Header) + + // FinalizeAndAssemble runs any post-transaction state modifications (e.g. block + // rewards) and assembles the final block. + // + // Note: The block header and state database might be updated to reflect any + // consensus rules that happen at finalization (e.g. block rewards). + FinalizeAndAssemble(chain ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) // Seal generates a new sealing request for the given input block and pushes diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go index 4d909146f..d271518f4 100644 --- a/consensus/ethash/consensus.go +++ b/consensus/ethash/consensus.go @@ -561,8 +561,16 @@ func (ethash *Ethash) Prepare(chain consensus.ChainReader, header *types.Header) } // Finalize implements consensus.Engine, accumulating the block and uncle rewards, -// setting the final state and assembling the block. -func (ethash *Ethash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { +// setting the final state on the header +func (ethash *Ethash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header) { + // Accumulate any block and uncle rewards and commit the final state root + accumulateRewards(chain.Config(), state, header, uncles) + header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) +} + +// FinalizeAndAssemble implements consensus.Engine, accumulating the block and +// uncle rewards, setting the final state and assembling the block. +func (ethash *Ethash) FinalizeAndAssemble(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { // Accumulate any block and uncle rewards and commit the final state root accumulateRewards(chain.Config(), state, header, uncles) header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) diff --git a/core/chain_makers.go b/core/chain_makers.go index b80788d19..754b543c7 100644 --- a/core/chain_makers.go +++ b/core/chain_makers.go @@ -206,7 +206,7 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, engine conse } if b.engine != nil { // Finalize and seal the block - block, _ := b.engine.Finalize(chainreader, b.header, statedb, b.txs, b.uncles, b.receipts) + block, _ := b.engine.FinalizeAndAssemble(chainreader, b.header, statedb, b.txs, b.uncles, b.receipts) // Write state changes to db root, err := statedb.Commit(config.IsEIP158(b.header.Number)) diff --git a/core/state_processor.go b/core/state_processor.go index 6f2a45120..bed6a0730 100644 --- a/core/state_processor.go +++ b/core/state_processor.go @@ -76,7 +76,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg allLogs = append(allLogs, receipt.Logs...) } // Finalize the block, applying any consensus engine specific extras (e.g. block rewards) - p.engine.Finalize(p.bc, header, statedb, block.Transactions(), block.Uncles(), receipts) + p.engine.Finalize(p.bc, header, statedb, block.Transactions(), block.Uncles()) return receipts, allLogs, *usedGas, nil } diff --git a/miner/worker.go b/miner/worker.go index 802c7e365..64ac21ccd 100644 --- a/miner/worker.go +++ b/miner/worker.go @@ -956,7 +956,7 @@ func (w *worker) commit(uncles []*types.Header, interval func(), update bool, st *receipts[i] = *l } s := w.current.state.Copy() - block, err := w.engine.Finalize(w.chain, w.current.header, s, w.current.txs, uncles, w.current.receipts) + block, err := w.engine.FinalizeAndAssemble(w.chain, w.current.header, s, w.current.txs, uncles, w.current.receipts) if err != nil { return err }