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core, trie: intermediate mempool between trie and database (#15857)

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This commit reduces database I/O by not writing every state trie to disk.
This commit is contained in:
Péter Szilágyi
2018-02-05 18:40:32 +02:00
committed by Felix Lange
parent 59336283c0
commit 55599ee95d
69 changed files with 1958 additions and 1164 deletions
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24
core/genesis.go
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@ -169,10 +169,9 @@ func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig
// Check whether the genesis block is already written.
if genesis != nil {
block, _ := genesis.ToBlock()
hash := block.Hash()
hash := genesis.ToBlock(nil).Hash()
if hash != stored {
return genesis.Config, block.Hash(), &GenesisMismatchError{stored, hash}
return genesis.Config, hash, &GenesisMismatchError{stored, hash}
}
}
@ -220,9 +219,12 @@ func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig {
}
}
// ToBlock creates the block and state of a genesis specification.
func (g *Genesis) ToBlock() (*types.Block, *state.StateDB) {
db, _ := ethdb.NewMemDatabase()
// ToBlock creates the genesis block and writes state of a genesis specification
// to the given database (or discards it if nil).
func (g *Genesis) ToBlock(db ethdb.Database) *types.Block {
if db == nil {
db, _ = ethdb.NewMemDatabase()
}
statedb, _ := state.New(common.Hash{}, state.NewDatabase(db))
for addr, account := range g.Alloc {
statedb.AddBalance(addr, account.Balance)
@ -252,19 +254,19 @@ func (g *Genesis) ToBlock() (*types.Block, *state.StateDB) {
if g.Difficulty == nil {
head.Difficulty = params.GenesisDifficulty
}
return types.NewBlock(head, nil, nil, nil), statedb
statedb.Commit(false)
statedb.Database().TrieDB().Commit(root, true)
return types.NewBlock(head, nil, nil, nil)
}
// Commit writes the block and state of a genesis specification to the database.
// The block is committed as the canonical head block.
func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) {
block, statedb := g.ToBlock()
block := g.ToBlock(db)
if block.Number().Sign() != 0 {
return nil, fmt.Errorf("can't commit genesis block with number > 0")
}
if _, err := statedb.CommitTo(db, false); err != nil {
return nil, fmt.Errorf("cannot write state: %v", err)
}
if err := WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty); err != nil {
return nil, err
}