forked from cerc-io/plugeth
85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package state
|
|
|
|
import "sync"
|
|
|
|
type account struct {
|
|
stateObject *StateObject
|
|
nstart uint64
|
|
nonces []bool
|
|
}
|
|
|
|
type ManagedState struct {
|
|
*StateDB
|
|
|
|
mu sync.RWMutex
|
|
|
|
accounts map[string]*account
|
|
}
|
|
|
|
func ManageState(statedb *StateDB) *ManagedState {
|
|
return &ManagedState{
|
|
StateDB: statedb,
|
|
accounts: make(map[string]*account),
|
|
}
|
|
}
|
|
|
|
func (ms *ManagedState) SetState(statedb *StateDB) {
|
|
ms.mu.Lock()
|
|
defer ms.mu.Unlock()
|
|
ms.StateDB = statedb
|
|
}
|
|
|
|
func (ms *ManagedState) RemoveNonce(addr []byte, n uint64) {
|
|
if ms.hasAccount(addr) {
|
|
ms.mu.Lock()
|
|
defer ms.mu.Unlock()
|
|
|
|
account := ms.getAccount(addr)
|
|
if n-account.nstart <= uint64(len(account.nonces)) {
|
|
reslice := make([]bool, n-account.nstart)
|
|
copy(reslice, account.nonces[:n-account.nstart])
|
|
account.nonces = reslice
|
|
}
|
|
}
|
|
}
|
|
|
|
func (ms *ManagedState) NewNonce(addr []byte) uint64 {
|
|
ms.mu.RLock()
|
|
defer ms.mu.RUnlock()
|
|
|
|
account := ms.getAccount(addr)
|
|
for i, nonce := range account.nonces {
|
|
if !nonce {
|
|
return account.nstart + uint64(i)
|
|
}
|
|
}
|
|
account.nonces = append(account.nonces, true)
|
|
return uint64(len(account.nonces)) + account.nstart
|
|
}
|
|
|
|
func (ms *ManagedState) hasAccount(addr []byte) bool {
|
|
_, ok := ms.accounts[string(addr)]
|
|
return ok
|
|
}
|
|
|
|
func (ms *ManagedState) getAccount(addr []byte) *account {
|
|
if account, ok := ms.accounts[string(addr)]; !ok {
|
|
so := ms.GetOrNewStateObject(addr)
|
|
ms.accounts[string(addr)] = newAccount(so)
|
|
} else {
|
|
// Always make sure the state account nonce isn't actually higher
|
|
// than the tracked one.
|
|
so := ms.StateDB.GetStateObject(addr)
|
|
if so != nil && uint64(len(account.nonces))+account.nstart < so.nonce {
|
|
ms.accounts[string(addr)] = newAccount(so)
|
|
}
|
|
|
|
}
|
|
|
|
return ms.accounts[string(addr)]
|
|
}
|
|
|
|
func newAccount(so *StateObject) *account {
|
|
return &account{so, so.nonce - 1, nil}
|
|
}
|