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Merge pull request #3006 from Arachnid/patch

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core/state: Fix memory expansion bug by not copying clean objects
This commit is contained in:
Péter Szilágyi 2016-09-19 04:20:14 +03:00 committed by GitHub
commit 88b012ad3b
3 changed files with 8 additions and 5 deletions
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2
core/state/state_object.go
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@ -187,7 +187,7 @@ func (self *StateObject) Copy() *StateObject {
stateObject.codeHash = common.CopyBytes(self.codeHash) stateObject.codeHash = common.CopyBytes(self.codeHash)
stateObject.nonce = self.nonce stateObject.nonce = self.nonce
stateObject.trie = self.trie stateObject.trie = self.trie
stateObject.code = common.CopyBytes(self.code) stateObject.code = self.code
stateObject.initCode = common.CopyBytes(self.initCode) stateObject.initCode = common.CopyBytes(self.initCode)
stateObject.storage = self.storage.Copy() stateObject.storage = self.storage.Copy()
stateObject.remove = self.remove stateObject.remove = self.remove

6
core/state/state_test.go
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@ -149,10 +149,11 @@ func TestSnapshot2(t *testing.T) {
so0.balance = big.NewInt(42) so0.balance = big.NewInt(42)
so0.nonce = 43 so0.nonce = 43
so0.SetCode([]byte{'c', 'a', 'f', 'e'}) so0.SetCode([]byte{'c', 'a', 'f', 'e'})
so0.remove = true so0.remove = false
so0.deleted = false so0.deleted = false
so0.dirty = false so0.dirty = true
state.SetStateObject(so0) state.SetStateObject(so0)
state.Commit()
// and one with deleted == true // and one with deleted == true
so1 := state.GetStateObject(stateobjaddr1) so1 := state.GetStateObject(stateobjaddr1)
@ -173,6 +174,7 @@ func TestSnapshot2(t *testing.T) {
state.Set(snapshot) state.Set(snapshot)
so0Restored := state.GetStateObject(stateobjaddr0) so0Restored := state.GetStateObject(stateobjaddr0)
so0Restored.GetState(storageaddr)
so1Restored := state.GetStateObject(stateobjaddr1) so1Restored := state.GetStateObject(stateobjaddr1)
// non-deleted is equal (restored) // non-deleted is equal (restored)
compareStateObjects(so0Restored, so0, t) compareStateObjects(so0Restored, so0, t)

5
core/state/statedb.go
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@ -324,7 +324,9 @@ func (self *StateDB) Copy() *StateDB {
state, _ := New(common.Hash{}, self.db) state, _ := New(common.Hash{}, self.db)
state.trie = self.trie state.trie = self.trie
for k, stateObject := range self.stateObjects { for k, stateObject := range self.stateObjects {
state.stateObjects[k] = stateObject.Copy() if stateObject.dirty {
state.stateObjects[k] = stateObject.Copy()
}
} }
state.refund.Set(self.refund) state.refund.Set(self.refund)
@ -364,7 +366,6 @@ func (s *StateDB) IntermediateRoot() common.Hash {
stateObject.Update() stateObject.Update()
s.UpdateStateObject(stateObject) s.UpdateStateObject(stateObject)
} }
stateObject.dirty = false
} }
} }
return s.trie.Hash() return s.trie.Hash()