mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-23 04:03:49 +00:00
079a177614
* Use ibs per transaction instead of per block * Remove copy functions, introduce balance increase map * Fix test * Fix lint * Introduce balanceIncrease journal action * Introduce balanceIncrease journal action * Simplifications * Fix * Reset * Simplify * Fix * Fixes * Fix for reading nil accounts * Fix edge cases with reverts * Clean up test output * Fix transfers * Handle special case of ripemd * Try with fixed compress, only commit every commfreq blocks * Updates * Updates * Update to fixed erigon-lib * Update to erigon-lib * Remove stop * Update to latest erigon-lib * fixup * Cleanup Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local> Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>
371 lines
10 KiB
Go
371 lines
10 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import (
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"bytes"
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"fmt"
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"io"
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"math/big"
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"github.com/holiman/uint256"
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"github.com/ledgerwatch/erigon/common"
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"github.com/ledgerwatch/erigon/core/types/accounts"
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"github.com/ledgerwatch/erigon/crypto"
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"github.com/ledgerwatch/erigon/rlp"
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"github.com/ledgerwatch/erigon/turbo/trie"
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)
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var emptyCodeHash = crypto.Keccak256(nil)
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var emptyCodeHashH = common.BytesToHash(emptyCodeHash)
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type Code []byte
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func (c Code) String() string {
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return string(c) //strings.Join(Disassemble(c), " ")
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}
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type Storage map[common.Hash]uint256.Int
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func (s Storage) String() (str string) {
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for key, value := range s {
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str += fmt.Sprintf("%X : %X\n", key, value)
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}
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return
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}
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func (s Storage) Copy() Storage {
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cpy := make(Storage)
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for key, value := range s {
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cpy[key] = value
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}
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return cpy
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}
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// stateObject represents an Ethereum account which is being modified.
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//
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// The usage pattern is as follows:
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// First you need to obtain a state object.
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// Account values can be accessed and modified through the object.
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type stateObject struct {
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address common.Address
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data accounts.Account
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original accounts.Account
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db *IntraBlockState
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// DB error.
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// State objects are used by the consensus core and VM which are
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// unable to deal with database-level errors. Any error that occurs
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// during a database read is memoized here and will eventually be returned
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// by IntraBlockState.Commit.
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dbErr error
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// Write caches.
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//trie Trie // storage trie, which becomes non-nil on first access
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code Code // contract bytecode, which gets set when code is loaded
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originStorage Storage // Storage cache of original entries to dedup rewrites
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// blockOriginStorage keeps the values of storage items at the beginning of the block
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// Used to make decision on whether to make a write to the
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// database (value != origin) or not (value == origin)
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blockOriginStorage Storage
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dirtyStorage Storage // Storage entries that need to be flushed to disk
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fakeStorage Storage // Fake storage which constructed by caller for debugging purpose.
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// Cache flags.
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// When an object is marked suicided it will be delete from the trie
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// during the "update" phase of the state transition.
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dirtyCode bool // true if the code was updated
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suicided bool
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deleted bool // true if account was deleted during the lifetime of this object
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created bool // true if this object represents a newly created contract
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}
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// empty returns whether the account is considered empty.
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func (so *stateObject) empty() bool {
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return so.data.Nonce == 0 && so.data.Balance.IsZero() && bytes.Equal(so.data.CodeHash[:], emptyCodeHash)
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}
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// newObject creates a state object.
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func newObject(db *IntraBlockState, address common.Address, data, original *accounts.Account) *stateObject {
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var so = stateObject{
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db: db,
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address: address,
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originStorage: make(Storage),
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blockOriginStorage: make(Storage),
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dirtyStorage: make(Storage),
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}
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so.data.Copy(data)
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if !so.data.Initialised {
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so.data.Balance.SetUint64(0)
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so.data.Initialised = true
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}
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if so.data.CodeHash == (common.Hash{}) {
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so.data.CodeHash = emptyCodeHashH
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}
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if so.data.Root == (common.Hash{}) {
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so.data.Root = trie.EmptyRoot
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}
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so.original.Copy(original)
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return &so
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}
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// EncodeRLP implements rlp.Encoder.
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func (so *stateObject) EncodeRLP(w io.Writer) error {
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return rlp.Encode(w, so.data)
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}
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// setError remembers the first non-nil error it is called with.
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func (so *stateObject) setError(err error) {
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if so.dbErr == nil {
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so.dbErr = err
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}
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}
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func (so *stateObject) markSuicided() {
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so.suicided = true
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}
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func (so *stateObject) touch() {
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so.db.journal.append(touchChange{
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account: &so.address,
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})
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if so.address == ripemd {
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// Explicitly put it in the dirty-cache, which is otherwise generated from
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// flattened journals.
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so.db.journal.dirty(so.address)
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}
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}
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// GetState returns a value from account storage.
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func (so *stateObject) GetState(key *common.Hash, out *uint256.Int) {
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value, dirty := so.dirtyStorage[*key]
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if dirty {
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*out = value
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return
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}
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// Otherwise return the entry's original value
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so.GetCommittedState(key, out)
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}
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// GetCommittedState retrieves a value from the committed account storage trie.
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func (so *stateObject) GetCommittedState(key *common.Hash, out *uint256.Int) {
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// If we have the original value cached, return that
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{
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value, cached := so.originStorage[*key]
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if cached {
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*out = value
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return
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}
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}
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if so.created {
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out.Clear()
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return
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}
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// Load from DB in case it is missing.
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enc, err := so.db.stateReader.ReadAccountStorage(so.address, so.data.GetIncarnation(), key)
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if err != nil {
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so.setError(err)
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out.Clear()
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return
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}
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if enc != nil {
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out.SetBytes(enc)
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} else {
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out.Clear()
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}
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so.originStorage[*key] = *out
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so.blockOriginStorage[*key] = *out
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}
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// SetState updates a value in account storage.
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func (so *stateObject) SetState(key *common.Hash, value uint256.Int) {
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// If the new value is the same as old, don't set
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var prev uint256.Int
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so.GetState(key, &prev)
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if prev == value {
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return
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}
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// New value is different, update and journal the change
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so.db.journal.append(storageChange{
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account: &so.address,
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key: *key,
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prevalue: prev,
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})
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so.setState(key, value)
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}
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// SetStorage replaces the entire state storage with the given one.
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//
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// After this function is called, all original state will be ignored and state
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// lookup only happens in the fake state storage.
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//
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// Note this function should only be used for debugging purpose.
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func (so *stateObject) SetStorage(storage Storage) {
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// Allocate fake storage if it's nil.
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if so.fakeStorage == nil {
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so.fakeStorage = make(Storage)
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}
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for key, value := range storage {
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so.fakeStorage[key] = value
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}
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// Don't bother journal since this function should only be used for
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// debugging and the `fake` storage won't be committed to database.
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}
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func (so *stateObject) setState(key *common.Hash, value uint256.Int) {
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so.dirtyStorage[*key] = value
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}
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// updateTrie writes cached storage modifications into the object's storage trie.
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func (so *stateObject) updateTrie(stateWriter StateWriter) error {
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for key, value := range so.dirtyStorage {
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value := value
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original := so.blockOriginStorage[key]
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so.originStorage[key] = value
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if err := stateWriter.WriteAccountStorage(so.address, so.data.GetIncarnation(), &key, &original, &value); err != nil {
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return err
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}
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}
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return nil
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}
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func (so *stateObject) printTrie() {
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for key, value := range so.dirtyStorage {
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fmt.Printf("WriteAccountStorage: %x,%x,%s\n", so.address, key, value.Hex())
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}
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}
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// AddBalance adds amount to so's balance.
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// It is used to add funds to the destination account of a transfer.
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func (so *stateObject) AddBalance(amount *uint256.Int) {
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// EIP161: We must check emptiness for the objects such that the account
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// clearing (0,0,0 objects) can take effect.
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if amount.IsZero() {
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if so.empty() {
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so.touch()
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}
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return
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}
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so.SetBalance(new(uint256.Int).Add(so.Balance(), amount))
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}
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// SubBalance removes amount from so's balance.
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// It is used to remove funds from the origin account of a transfer.
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func (so *stateObject) SubBalance(amount *uint256.Int) {
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if amount.IsZero() {
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return
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}
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so.SetBalance(new(uint256.Int).Sub(so.Balance(), amount))
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}
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func (so *stateObject) SetBalance(amount *uint256.Int) {
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so.db.journal.append(balanceChange{
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account: &so.address,
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prev: so.data.Balance,
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})
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so.setBalance(amount)
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}
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func (so *stateObject) setBalance(amount *uint256.Int) {
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so.data.Balance.Set(amount)
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so.data.Initialised = true
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}
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// Return the gas back to the origin. Used by the Virtual machine or Closures
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func (so *stateObject) ReturnGas(gas *big.Int) {}
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func (so *stateObject) setIncarnation(incarnation uint64) {
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so.data.SetIncarnation(incarnation)
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}
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//
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// Attribute accessors
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//
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// Returns the address of the contract/account
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func (so *stateObject) Address() common.Address {
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return so.address
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}
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// Code returns the contract code associated with this object, if any.
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func (so *stateObject) Code() []byte {
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if so.code != nil {
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return so.code
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}
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if bytes.Equal(so.CodeHash(), emptyCodeHash) {
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return nil
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}
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code, err := so.db.stateReader.ReadAccountCode(so.Address(), so.data.Incarnation, common.BytesToHash(so.CodeHash()))
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if err != nil {
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so.setError(fmt.Errorf("can't load code hash %x: %w", so.CodeHash(), err))
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}
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so.code = code
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return code
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}
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func (so *stateObject) SetCode(codeHash common.Hash, code []byte) {
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prevcode := so.Code()
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so.db.journal.append(codeChange{
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account: &so.address,
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prevhash: so.data.CodeHash,
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prevcode: prevcode,
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})
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so.setCode(codeHash, code)
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}
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func (so *stateObject) setCode(codeHash common.Hash, code []byte) {
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so.code = code
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so.data.CodeHash = codeHash
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so.dirtyCode = true
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}
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func (so *stateObject) SetNonce(nonce uint64) {
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so.db.journal.append(nonceChange{
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account: &so.address,
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prev: so.data.Nonce,
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})
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so.setNonce(nonce)
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}
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func (so *stateObject) setNonce(nonce uint64) {
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so.data.Nonce = nonce
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}
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func (so *stateObject) CodeHash() []byte {
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return so.data.CodeHash[:]
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}
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func (so *stateObject) Balance() *uint256.Int {
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return &so.data.Balance
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}
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func (so *stateObject) Nonce() uint64 {
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return so.data.Nonce
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}
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// Never called, but must be present to allow stateObject to be used
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// as a vm.Account interface that also satisfies the vm.ContractRef
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// interface. Interfaces are awesome.
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func (so *stateObject) Value() *big.Int {
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panic("Value on stateObject should never be called")
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}
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