mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-07-25 22:26:42 +00:00
9182d80946
Removed the arbitrary precision VM in favour of the optimised JIT VM. This enables the new VM for all calls and creates and removed the need for the --jitvm and --forcejit flags. This fixes a minor issue when the jit is used in a multithreaded environment it would ignore the complitation status of the JIT and default to the byte-code VM. Instead it now waits for the compilation to finish and run the JIT if the execution was successful.
118 lines
4.5 KiB
Go
118 lines
4.5 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package core
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
)
|
|
|
|
// GetHashFn returns a function for which the VM env can query block hashes through
|
|
// up to the limit defined by the Yellow Paper and uses the given block chain
|
|
// to query for information.
|
|
func GetHashFn(ref common.Hash, chain *BlockChain) func(n uint64) common.Hash {
|
|
return func(n uint64) common.Hash {
|
|
for block := chain.GetBlockByHash(ref); block != nil; block = chain.GetBlock(block.ParentHash(), block.NumberU64()-1) {
|
|
if block.NumberU64() == n {
|
|
return block.Hash()
|
|
}
|
|
}
|
|
|
|
return common.Hash{}
|
|
}
|
|
}
|
|
|
|
type VMEnv struct {
|
|
chainConfig *ChainConfig // Chain configuration
|
|
state *state.StateDB // State to use for executing
|
|
evm vm.VirtualMachine // The Ethereum Virtual Machine
|
|
depth int // Current execution depth
|
|
msg Message // Message appliod
|
|
|
|
header *types.Header // Header information
|
|
chain *BlockChain // Blockchain handle
|
|
getHashFn func(uint64) common.Hash // getHashFn callback is used to retrieve block hashes
|
|
}
|
|
|
|
func NewEnv(state *state.StateDB, chainConfig *ChainConfig, chain *BlockChain, msg Message, header *types.Header, cfg vm.Config) *VMEnv {
|
|
env := &VMEnv{
|
|
chainConfig: chainConfig,
|
|
chain: chain,
|
|
state: state,
|
|
header: header,
|
|
msg: msg,
|
|
getHashFn: GetHashFn(header.ParentHash, chain),
|
|
}
|
|
|
|
env.evm = vm.New(env, cfg)
|
|
return env
|
|
}
|
|
|
|
func (self *VMEnv) RuleSet() vm.RuleSet { return self.chainConfig }
|
|
func (self *VMEnv) Vm() vm.Vm { return self.evm }
|
|
func (self *VMEnv) Origin() common.Address { f, _ := self.msg.From(); return f }
|
|
func (self *VMEnv) BlockNumber() *big.Int { return self.header.Number }
|
|
func (self *VMEnv) Coinbase() common.Address { return self.header.Coinbase }
|
|
func (self *VMEnv) Time() *big.Int { return self.header.Time }
|
|
func (self *VMEnv) Difficulty() *big.Int { return self.header.Difficulty }
|
|
func (self *VMEnv) GasLimit() *big.Int { return self.header.GasLimit }
|
|
func (self *VMEnv) GasPrice() *big.Int { return self.msg.GasPrice() }
|
|
func (self *VMEnv) Value() *big.Int { return self.msg.Value() }
|
|
func (self *VMEnv) Db() vm.Database { return self.state }
|
|
func (self *VMEnv) Depth() int { return self.depth }
|
|
func (self *VMEnv) SetDepth(i int) { self.depth = i }
|
|
func (self *VMEnv) GetHash(n uint64) common.Hash {
|
|
return self.getHashFn(n)
|
|
}
|
|
|
|
func (self *VMEnv) AddLog(log *vm.Log) {
|
|
self.state.AddLog(log)
|
|
}
|
|
func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
|
|
return self.state.GetBalance(from).Cmp(balance) >= 0
|
|
}
|
|
|
|
func (self *VMEnv) MakeSnapshot() vm.Database {
|
|
return self.state.Copy()
|
|
}
|
|
|
|
func (self *VMEnv) SetSnapshot(copy vm.Database) {
|
|
self.state.Set(copy.(*state.StateDB))
|
|
}
|
|
|
|
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) {
|
|
Transfer(from, to, amount)
|
|
}
|
|
|
|
func (self *VMEnv) Call(me vm.ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
|
|
return Call(self, me, addr, data, gas, value)
|
|
}
|
|
func (self *VMEnv) CallCode(me vm.ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
|
|
return CallCode(self, me, addr, data, gas, value)
|
|
}
|
|
|
|
func (self *VMEnv) DelegateCall(me vm.ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error) {
|
|
return DelegateCall(self, me, addr, data, gas)
|
|
}
|
|
|
|
func (self *VMEnv) Create(me vm.ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error) {
|
|
return Create(self, me, data, gas, value)
|
|
}
|