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rlp, trie: faster trie node encoding (#24126)

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This change speeds up trie hashing and all other activities that require
RLP encoding of trie nodes by approximately 20%. The speedup is achieved by
avoiding reflection overhead during node encoding.

The interface type trie.node now contains a method 'encode' that works with
rlp.EncoderBuffer. Management of EncoderBuffers is left to calling code.
trie.hasher, which is pooled to avoid allocations, now maintains an
EncoderBuffer. This means memory resources related to trie node encoding
are tied to the hasher pool.

Co-authored-by: Felix Lange <fjl@twurst.com>
This commit is contained in:
Qian Bin
2022-03-09 21:45:17 +08:00
committed by GitHub
parent d1f6a9f544
commit 65ed1a6871
12 changed files with 302 additions and 197 deletions
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19
trie/database.go
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@ -113,16 +113,9 @@ func (n rawFullNode) cache() (hashNode, bool) { panic("this should never end u
func (n rawFullNode) fstring(ind string) string { panic("this should never end up in a live trie") }
func (n rawFullNode) EncodeRLP(w io.Writer) error {
var nodes [17]node
for i, child := range n {
if child != nil {
nodes[i] = child
} else {
nodes[i] = nilValueNode
}
}
return rlp.Encode(w, nodes)
eb := rlp.NewEncoderBuffer(w)
n.encode(eb)
return eb.Flush()
}
// rawShortNode represents only the useful data content of a short node, with the
@ -164,11 +157,7 @@ func (n *cachedNode) rlp() []byte {
if node, ok := n.node.(rawNode); ok {
return node
}
blob, err := rlp.EncodeToBytes(n.node)
if err != nil {
panic(err)
}
return blob
return nodeToBytes(n.node)
}
// obj returns the decoded and expanded trie node, either directly from the cache,