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Sahil-4555 2025-12-30 16:25:15 +05:30
parent 8e34d47d4f
commit c4cb681b3a
3 changed files with 36 additions and 6 deletions
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19
core/vm/memory.go
View file

@ -79,13 +79,20 @@ func (m *Memory) Set32(offset uint64, val *uint256.Int) {
// Resize grows the memory to the requested size.
func (m *Memory) Resize(size uint64) {
if uint64(len(m.store)) < size {
if uint64(cap(m.store)) >= size {
m.store = m.store[:size]
} else {
m.store = append(m.store, make([]byte, size-uint64(len(m.store)))...)
}
if size <= uint64(len(m.store)) {
return
}
if size <= uint64(cap(m.store)) {
prevLen := len(m.store)
m.store = m.store[:size]
clear(m.store[prevLen:])
return
}
store := make([]byte, size)
copy(store, m.store)
m.store = store
}
// GetCopy returns offset + size as a new slice

7
core/vm/new_bench.txt Normal file
View file

@ -0,0 +1,7 @@
goos: linux
goarch: amd64
pkg: github.com/ethereum/go-ethereum/core/vm
cpu: Intel(R) Core(TM) i7-8565U CPU @ 1.80GHz
BenchmarkResize-8 876326 89800 ns/op 442142 B/op 1 allocs/op
BenchmarkResize-8 signal: interrupt
FAIL github.com/ethereum/go-ethereum/core/vm 154.281s

16
core/vm/old_bench.txt Normal file
View file

@ -0,0 +1,16 @@
goos: linux
goarch: amd64
pkg: github.com/ethereum/go-ethereum/core/vm
cpu: Intel(R) Core(TM) i7-8565U CPU @ 1.80GHz
BenchmarkResize-8 513681400 4.756 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 747650196 2.313 ns/op 6 B/op 0 allocs/op
BenchmarkResize-8 907757728 1.302 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 906696679 1.356 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 832139062 2.823 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 943258486 2.120 ns/op 6 B/op 0 allocs/op
BenchmarkResize-8 1000000000 1.619 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 982619973 1.388 ns/op 5 B/op 0 allocs/op
BenchmarkResize-8 761129438 1.351 ns/op 6 B/op 0 allocs/op
BenchmarkResize-8 943591894 1.643 ns/op 6 B/op 0 allocs/op
PASS
ok github.com/ethereum/go-ethereum/core/vm 37.469s