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core, all: split vm.Context into BlockContext and TxContext (#21672)

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* all: core: split vm.Config into BlockConfig and TxConfig

* core: core/vm: reset EVM between tx in block instead of creating new

* core/vm: added docs
This commit is contained in:
Marius van der Wijden
2020-11-13 13:42:19 +01:00
committed by GitHub
parent 6f4cccf8d2
commit 2045a2bba3
24 changed files with 183 additions and 139 deletions
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48
core/state_processor.go
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@ -65,10 +65,16 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 {
misc.ApplyDAOHardFork(statedb)
}
blockContext := NewEVMBlockContext(header, p.bc, nil)
vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, p.config, cfg)
// Iterate over and process the individual transactions
for i, tx := range block.Transactions() {
msg, err := tx.AsMessage(types.MakeSigner(p.config, header.Number))
if err != nil {
return nil, nil, 0, err
}
statedb.Prepare(tx.Hash(), block.Hash(), i)
receipt, err := ApplyTransaction(p.config, p.bc, nil, gp, statedb, header, tx, usedGas, cfg)
receipt, err := applyTransaction(msg, p.config, p.bc, nil, gp, statedb, header, tx, usedGas, vmenv)
if err != nil {
return nil, nil, 0, err
}
@ -81,34 +87,25 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
return receipts, allLogs, *usedGas, nil
}
// ApplyTransaction attempts to apply a transaction to the given state database
// and uses the input parameters for its environment. It returns the receipt
// for the transaction, gas used and an error if the transaction failed,
// indicating the block was invalid.
func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) {
msg, err := tx.AsMessage(types.MakeSigner(config, header.Number))
if err != nil {
return nil, err
}
func applyTransaction(msg types.Message, config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) {
// Create a new context to be used in the EVM environment
context := NewEVMContext(msg, header, bc, author)
// Create a new environment which holds all relevant information
// about the transaction and calling mechanisms.
vmenv := vm.NewEVM(context, statedb, config, cfg)
txContext := NewEVMTxContext(msg)
// Add addresses to access list if applicable
if config.IsYoloV2(header.Number) {
statedb.AddAddressToAccessList(msg.From())
if dst := msg.To(); dst != nil {
statedb.AddAddressToAccessList(*dst)
// If it's a create-tx, the destination will be added inside evm.create
}
for _, addr := range vmenv.ActivePrecompiles() {
for _, addr := range evm.ActivePrecompiles() {
statedb.AddAddressToAccessList(addr)
}
}
// Update the evm with the new transaction context.
evm.Reset(txContext, statedb)
// Apply the transaction to the current state (included in the env)
result, err := ApplyMessage(vmenv, msg, gp)
result, err := ApplyMessage(evm, msg, gp)
if err != nil {
return nil, err
}
@ -128,7 +125,7 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
receipt.GasUsed = result.UsedGas
// if the transaction created a contract, store the creation address in the receipt.
if msg.To() == nil {
receipt.ContractAddress = crypto.CreateAddress(vmenv.Context.Origin, tx.Nonce())
receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())
}
// Set the receipt logs and create a bloom for filtering
receipt.Logs = statedb.GetLogs(tx.Hash())
@ -139,3 +136,18 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
return receipt, err
}
// ApplyTransaction attempts to apply a transaction to the given state database
// and uses the input parameters for its environment. It returns the receipt
// for the transaction, gas used and an error if the transaction failed,
// indicating the block was invalid.
func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) {
msg, err := tx.AsMessage(types.MakeSigner(config, header.Number))
if err != nil {
return nil, err
}
// Create a new context to be used in the EVM environment
blockContext := NewEVMBlockContext(header, bc, author)
vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, config, cfg)
return applyTransaction(msg, config, bc, author, gp, statedb, header, tx, usedGas, vmenv)
}