diff --git a/trie/database.go b/trie/database.go index 8c9f471768..8c154ba96d 100644 --- a/trie/database.go +++ b/trie/database.go @@ -163,7 +163,10 @@ func (n *cachedNode) rlp() []byte { // or by regenerating it from the rlp encoded blob. func (n *cachedNode) obj(hash common.Hash) node { if node, ok := n.node.(rawNode); ok { - return mustDecodeNode(hash[:], node) + // The raw-blob format nodes are loaded from either from + // clean cache or the database, they are all in their own + // copy and safe to use unsafe decoder. + return mustDecodeNodeUnsafe(hash[:], node) } return expandNode(hash[:], n.node) } @@ -346,7 +349,10 @@ func (db *Database) node(hash common.Hash) node { if enc := db.cleans.Get(nil, hash[:]); enc != nil { memcacheCleanHitMeter.Mark(1) memcacheCleanReadMeter.Mark(int64(len(enc))) - return mustDecodeNode(hash[:], enc) + + // The returned value from cache is in its own copy, + // safe to use mustDecodeNodeUnsafe for decoding. + return mustDecodeNodeUnsafe(hash[:], enc) } } // Retrieve the node from the dirty cache if available @@ -371,7 +377,9 @@ func (db *Database) node(hash common.Hash) node { memcacheCleanMissMeter.Mark(1) memcacheCleanWriteMeter.Mark(int64(len(enc))) } - return mustDecodeNode(hash[:], enc) + // The returned value from database is in its own copy, + // safe to use mustDecodeNodeUnsafe for decoding. + return mustDecodeNodeUnsafe(hash[:], enc) } // Node retrieves an encoded cached trie node from memory. If it cannot be found diff --git a/trie/node.go b/trie/node.go index bf3f024bb8..6ce6551ded 100644 --- a/trie/node.go +++ b/trie/node.go @@ -99,6 +99,7 @@ func (n valueNode) fstring(ind string) string { return fmt.Sprintf("%x ", []byte(n)) } +// mustDecodeNode is a wrapper of decodeNode and panic if any error is encountered. func mustDecodeNode(hash, buf []byte) node { n, err := decodeNode(hash, buf) if err != nil { @@ -107,8 +108,29 @@ func mustDecodeNode(hash, buf []byte) node { return n } -// decodeNode parses the RLP encoding of a trie node. +// mustDecodeNodeUnsafe is a wrapper of decodeNodeUnsafe and panic if any error is +// encountered. +func mustDecodeNodeUnsafe(hash, buf []byte) node { + n, err := decodeNodeUnsafe(hash, buf) + if err != nil { + panic(fmt.Sprintf("node %x: %v", hash, err)) + } + return n +} + +// decodeNode parses the RLP encoding of a trie node. It will deep-copy the passed +// byte slice for decoding, so it's safe to modify the byte slice afterwards. The- +// decode performance of this function is not optimal, but it is suitable for most +// scenarios with low performance requirements and hard to determine whether the +// byte slice be modified or not. func decodeNode(hash, buf []byte) (node, error) { + return decodeNodeUnsafe(hash, common.CopyBytes(buf)) +} + +// decodeNodeUnsafe parses the RLP encoding of a trie node. The passed byte slice +// will be directly referenced by node without bytes deep copy, so the input MUST +// not be changed after. +func decodeNodeUnsafe(hash, buf []byte) (node, error) { if len(buf) == 0 { return nil, io.ErrUnexpectedEOF } @@ -141,7 +163,7 @@ func decodeShort(hash, elems []byte) (node, error) { if err != nil { return nil, fmt.Errorf("invalid value node: %v", err) } - return &shortNode{key, append(valueNode{}, val...), flag}, nil + return &shortNode{key, valueNode(val), flag}, nil } r, _, err := decodeRef(rest) if err != nil { @@ -164,7 +186,7 @@ func decodeFull(hash, elems []byte) (*fullNode, error) { return n, err } if len(val) > 0 { - n.Children[16] = append(valueNode{}, val...) + n.Children[16] = valueNode(val) } return n, nil } @@ -190,7 +212,7 @@ func decodeRef(buf []byte) (node, []byte, error) { // empty node return nil, rest, nil case kind == rlp.String && len(val) == 32: - return append(hashNode{}, val...), rest, nil + return hashNode(val), rest, nil default: return nil, nil, fmt.Errorf("invalid RLP string size %d (want 0 or 32)", len(val)) } diff --git a/trie/node_test.go b/trie/node_test.go index ac1d8fbef3..9b8b33748f 100644 --- a/trie/node_test.go +++ b/trie/node_test.go @@ -20,6 +20,7 @@ import ( "bytes" "testing" + "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/rlp" ) @@ -92,3 +93,123 @@ func TestDecodeFullNode(t *testing.T) { t.Fatalf("decode full node err: %v", err) } } + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkEncodeShortNode +// BenchmarkEncodeShortNode-8 16878850 70.81 ns/op 48 B/op 1 allocs/op +func BenchmarkEncodeShortNode(b *testing.B) { + node := &shortNode{ + Key: []byte{0x1, 0x2}, + Val: hashNode(randBytes(32)), + } + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + nodeToBytes(node) + } +} + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkEncodeFullNode +// BenchmarkEncodeFullNode-8 4323273 284.4 ns/op 576 B/op 1 allocs/op +func BenchmarkEncodeFullNode(b *testing.B) { + node := &fullNode{} + for i := 0; i < 16; i++ { + node.Children[i] = hashNode(randBytes(32)) + } + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + nodeToBytes(node) + } +} + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkDecodeShortNode +// BenchmarkDecodeShortNode-8 7925638 151.0 ns/op 157 B/op 4 allocs/op +func BenchmarkDecodeShortNode(b *testing.B) { + node := &shortNode{ + Key: []byte{0x1, 0x2}, + Val: hashNode(randBytes(32)), + } + blob := nodeToBytes(node) + hash := crypto.Keccak256(blob) + + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + mustDecodeNode(hash, blob) + } +} + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkDecodeShortNodeUnsafe +// BenchmarkDecodeShortNodeUnsafe-8 9027476 128.6 ns/op 109 B/op 3 allocs/op +func BenchmarkDecodeShortNodeUnsafe(b *testing.B) { + node := &shortNode{ + Key: []byte{0x1, 0x2}, + Val: hashNode(randBytes(32)), + } + blob := nodeToBytes(node) + hash := crypto.Keccak256(blob) + + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + mustDecodeNodeUnsafe(hash, blob) + } +} + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkDecodeFullNode +// BenchmarkDecodeFullNode-8 1597462 761.9 ns/op 1280 B/op 18 allocs/op +func BenchmarkDecodeFullNode(b *testing.B) { + node := &fullNode{} + for i := 0; i < 16; i++ { + node.Children[i] = hashNode(randBytes(32)) + } + blob := nodeToBytes(node) + hash := crypto.Keccak256(blob) + + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + mustDecodeNode(hash, blob) + } +} + +// goos: darwin +// goarch: arm64 +// pkg: github.com/ethereum/go-ethereum/trie +// BenchmarkDecodeFullNodeUnsafe +// BenchmarkDecodeFullNodeUnsafe-8 1789070 687.1 ns/op 704 B/op 17 allocs/op +func BenchmarkDecodeFullNodeUnsafe(b *testing.B) { + node := &fullNode{} + for i := 0; i < 16; i++ { + node.Children[i] = hashNode(randBytes(32)) + } + blob := nodeToBytes(node) + hash := crypto.Keccak256(blob) + + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + mustDecodeNodeUnsafe(hash, blob) + } +}