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Force stateObject to update storage trie deterministically

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This commit is contained in:
suhasagg 2019-07-26 14:19:41 +05:30
parent 24cd709acb
commit 41d4c14e3c
1 changed files with 13 additions and 1 deletions
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14
core/state/state_object.go
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@ -81,6 +81,7 @@ type stateObject struct {
originStorage Storage // Storage cache of original entries to dedup rewrites
dirtyStorage Storage // Storage entries that need to be flushed to disk
dirtyStorageKeys []common.Hash // Dirty storage keys in order of insertion into dirtyStorage
// Cache flags.
// When an object is marked suicided it will be delete from the trie
@ -119,6 +120,7 @@ func newObject(db *StateDB, address common.Address, data Account) *stateObject {
data: data,
originStorage: make(Storage),
dirtyStorage: make(Storage),
dirtyStorageKeys: nil,
}
}
@ -218,6 +220,12 @@ func (s *stateObject) SetState(db Database, key, value common.Hash) {
func (s *stateObject) setState(key, value common.Hash) {
s.dirtyStorage[key] = value
for _, k := range s.dirtyStorageKeys {
if k == key {
return
}
}
s.dirtyStorageKeys = append(s.dirtyStorageKeys, key)
}
// updateTrie writes cached storage modifications into the object's storage trie.
@ -228,7 +236,10 @@ func (s *stateObject) updateTrie(db Database) Trie {
}
// Update all the dirty slots in the trie
tr := s.getTrie(db)
for key, value := range s.dirtyStorage {
// Iterate through the storage keys in deterministic order to ensure the storage trie is
// identical across machines
for _, key := range s.dirtyStorageKeys {
value := s.dirtyStorage[key]
delete(s.dirtyStorage, key)
// Skip noop changes, persist actual changes
@ -323,6 +334,7 @@ func (s *stateObject) deepCopy(db *StateDB) *stateObject {
}
stateObject.code = s.code
stateObject.dirtyStorage = s.dirtyStorage.Copy()
stateObject.dirtyStorageKeys = append([]common.Hash{}, s.dirtyStorageKeys...)
stateObject.originStorage = s.originStorage.Copy()
stateObject.suicided = s.suicided
stateObject.dirtyCode = s.dirtyCode