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[#49] util/proto: Do not allocate in StringSize()

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It was not catched by the test because most of the time the function is
inlined. However, I've seen it allocating with pprof in one of the
earlier builds.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
This commit is contained in:
Evgenii Stratonikov 2023-07-26 18:51:37 +03:00
parent 7133a01ccf
commit 7a5ee927c8
1 changed files with 22 additions and 15 deletions
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37
util/proto/marshal.go
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@ -20,13 +20,21 @@ type (
)
func BytesMarshal(field int, buf, v []byte) int {
if len(v) == 0 {
return 0
}
return bytesMarshal(field, buf, v)
}
func bytesMarshal(field int, buf, v []byte) int {
func BytesSize(field int, v []byte) int {
return bytesSize(field, v)
}
func bytesMarshal[T ~[]byte | ~string](field int, buf []byte, v T) int {
if len(v) == 0 {
return 0
}
return bytesMarshalNoCheck(field, buf, v)
}
func bytesMarshalNoCheck[T ~[]byte | ~string](field int, buf []byte, v T) int {
prefix := field<<3 | 0x2
// buf length check can prevent panic at PutUvarint, but it will make
@ -38,26 +46,25 @@ func bytesMarshal(field int, buf, v []byte) int {
return i
}
func BytesSize(field int, v []byte) int {
ln := len(v)
if ln == 0 {
func bytesSize[T ~[]byte | ~string](field int, v T) int {
if len(v) == 0 {
return 0
}
return bytesSize(field, v)
return bytesSizeNoCheck(field, v)
}
func bytesSize(field int, v []byte) int {
func bytesSizeNoCheck[T ~[]byte | ~string](field int, v T) int {
prefix := field<<3 | 0x2
return VarUIntSize(uint64(prefix)) + VarUIntSize(uint64(len(v))) + len(v)
}
func StringMarshal(field int, buf []byte, v string) int {
return BytesMarshal(field, buf, []byte(v))
return bytesMarshal(field, buf, v)
}
func StringSize(field int, v string) int {
return BytesSize(field, []byte(v))
return bytesSize(field, v)
}
func BoolMarshal(field int, buf []byte, v bool) int {
@ -146,7 +153,7 @@ func RepeatedBytesMarshal(field int, buf []byte, v [][]byte) int {
var offset int
for i := range v {
offset += bytesMarshal(field, buf[offset:], v[i])
offset += bytesMarshalNoCheck(field, buf[offset:], v[i])
}
return offset
@ -154,7 +161,7 @@ func RepeatedBytesMarshal(field int, buf []byte, v [][]byte) int {
func RepeatedBytesSize(field int, v [][]byte) (size int) {
for i := range v {
size += bytesSize(field, v[i])
size += bytesSizeNoCheck(field, v[i])
}
return size
@ -164,7 +171,7 @@ func RepeatedStringMarshal(field int, buf []byte, v []string) int {
var offset int
for i := range v {
offset += bytesMarshal(field, buf[offset:], []byte(v[i]))
offset += bytesMarshalNoCheck(field, buf[offset:], v[i])
}
return offset
@ -172,7 +179,7 @@ func RepeatedStringMarshal(field int, buf []byte, v []string) int {
func RepeatedStringSize(field int, v []string) (size int) {
for i := range v {
size += bytesSize(field, []byte(v[i]))
size += bytesSizeNoCheck(field, v[i])
}
return size