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trie: reduce allocations in hashFullNodeChildren

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temporary children array espaces to heap. Directly
hash into a fullNode instead.
This commit is contained in:
Ömer Faruk IRMAK 2025-07-15 19:23:49 +03:00
parent e94123acc2
commit ee02c0a277
1 changed files with 7 additions and 7 deletions
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14
trie/hasher.go
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@ -102,7 +102,7 @@ func (h *hasher) hashShortNodeChildren(n *shortNode) *shortNode {
// hashFullNodeChildren returns a copy of the supplied fullNode, with its child
// being replaced by either the hash or an embedded node if the child is small.
func (h *hasher) hashFullNodeChildren(n *fullNode) *fullNode {
var children [17]node
fullNode := fullNode{flags: nodeFlag{}}
if h.parallel {
var wg sync.WaitGroup
wg.Add(16)
@ -110,9 +110,9 @@ func (h *hasher) hashFullNodeChildren(n *fullNode) *fullNode {
go func(i int) {
hasher := newHasher(false)
if child := n.Children[i]; child != nil {
children[i] = hasher.hash(child, false)
fullNode.Children[i] = hasher.hash(child, false)
} else {
children[i] = nilValueNode
fullNode.Children[i] = nilValueNode
}
returnHasherToPool(hasher)
wg.Done()
@ -122,16 +122,16 @@ func (h *hasher) hashFullNodeChildren(n *fullNode) *fullNode {
} else {
for i := 0; i < 16; i++ {
if child := n.Children[i]; child != nil {
children[i] = h.hash(child, false)
fullNode.Children[i] = h.hash(child, false)
} else {
children[i] = nilValueNode
fullNode.Children[i] = nilValueNode
}
}
}
if n.Children[16] != nil {
children[16] = n.Children[16]
fullNode.Children[16] = n.Children[16]
}
return &fullNode{flags: nodeFlag{}, Children: children}
return &fullNode
}
// shortNodeToHash computes the hash of the given shortNode. The shortNode must