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trie: stacktrie -- don't create unnecessary common.Hash objects (#14)

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* revert snaphash to processing all accounts

* use ReStackTrie in generateTrie

* Save memory by hashing a branch if no more insert will occur

* Don't create unnecessary common.Hash objects
This commit is contained in:
Guillaume Ballet 2020-03-31 16:48:33 +02:00 committed by GitHub
parent 62d322a1a7
commit daea1c45c4
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 8 deletions
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19
trie/stacktrie.go
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@ -322,7 +322,7 @@ func (st *ReStackTrie) insert(key, value []byte) {
for i := idx - 1; i >= 0; i-- {
if st.children[i] != nil {
if st.children[i].nodeType != hashedNode {
st.children[i].val = st.children[i].Hash().Bytes()
st.children[i].val = st.children[i].hash()
st.children[i].key = nil
st.children[i].nodeType = hashedNode
}
@ -437,7 +437,7 @@ func (st *ReStackTrie) insert(key, value []byte) {
p.children[origIdx].val = st.val
p.children[origIdx].keyOffset = p.keyOffset + 1
p.children[origIdx].val = p.children[origIdx].Hash().Bytes()
p.children[origIdx].val = p.children[origIdx].hash()
p.children[origIdx].nodeType = hashedNode
p.children[origIdx].key = nil
@ -559,10 +559,10 @@ func writeHPRLP(writer io.Writer, key, val []byte, leaf bool) {
//io.Copy(w, &writer)
}
func (st *ReStackTrie) Hash() (h common.Hash) {
func (st *ReStackTrie) hash() []byte {
/* Shortcut if node is already hashed */
if st.nodeType == hashedNode {
return common.BytesToHash(st.val)
return st.val
}
d := sha3.NewLegacyKeccak256()
@ -575,7 +575,7 @@ func (st *ReStackTrie) Hash() (h common.Hash) {
// Write a 32 byte list to the sponge
payload[pos] = 0xa0
pos++
copy(payload[pos:pos+32], v.Hash().Bytes())
copy(payload[pos:pos+32], v.hash())
pos += 32
st.children[i] = nil // Reclaim mem from subtree
} else {
@ -607,7 +607,7 @@ func (st *ReStackTrie) Hash() (h common.Hash) {
}
d.Write(payload[start:pos])
case extNode:
ch := st.children[0].Hash().Bytes()
ch := st.children[0].hash()
writeHPRLP(d, st.key, ch, false)
st.children[0] = nil // Reclaim mem from subtree
case leafNode:
@ -616,6 +616,9 @@ func (st *ReStackTrie) Hash() (h common.Hash) {
default:
panic("Invalid node type")
}
d.Sum(h[:0])
return
return d.Sum(nil)
}
func (st *ReStackTrie) Hash() (h common.Hash) {
return common.BytesToHash(st.hash())
}