mirror of
https://github.com/protocolbuffers/protobuf-go.git
synced 2025-01-27 21:35:28 +00:00
c37adefdac
This is a port of the v1 table marshaler, with some substantial cleanup and refactoring. Benchstat results from the protobuf reference benchmark data comparing the v1 package with v2, with AllowPartial:true set for the new package. This is not an apples-to-apples comparison, since v1 doesn't have a way to disable required field checks. Required field checks in v2 package currently go through reflection, which performs terribly; my initial experimentation indicates that fast-path required field checks will not add a large amount of cost; these results are incomplete but not wholly inaccurate. name old time/op new time/op delta /dataset.google_message3_1.pb/Marshal-12 219ms ± 1% 232ms ± 1% +5.85% (p=0.004 n=6+5) /dataset.google_message2.pb/Marshal-12 261µs ± 3% 248µs ± 1% -5.14% (p=0.002 n=6+6) /dataset.google_message1_proto2.pb/Marshal-12 681ns ± 2% 637ns ± 3% -6.53% (p=0.002 n=6+6) /dataset.google_message1_proto3.pb/Marshal-12 1.10µs ± 8% 0.99µs ± 3% -9.63% (p=0.002 n=6+6) /dataset.google_message3_3.pb/Marshal-12 44.2ms ± 3% 35.2ms ± 1% -20.28% (p=0.004 n=6+5) /dataset.google_message4.pb/Marshal-12 91.4ms ± 2% 94.9ms ± 2% +3.78% (p=0.002 n=6+6) /dataset.google_message3_2.pb/Marshal-12 78.7ms ± 6% 80.8ms ± 4% ~ (p=0.310 n=6+6) /dataset.google_message3_4.pb/Marshal-12 10.6ms ± 3% 10.6ms ± 8% ~ (p=0.662 n=5+6) /dataset.google_message3_5.pb/Marshal-12 675ms ± 4% 510ms ± 2% -24.40% (p=0.002 n=6+6) /dataset.google_message3_1.pb/Marshal 219ms ± 1% 236ms ± 7% +8.06% (p=0.004 n=5+6) /dataset.google_message2.pb/Marshal 257µs ± 1% 250µs ± 3% ~ (p=0.052 n=5+6) /dataset.google_message1_proto2.pb/Marshal 685ns ± 1% 628ns ± 1% -8.41% (p=0.008 n=5+5) /dataset.google_message1_proto3.pb/Marshal 1.08µs ± 1% 0.98µs ± 2% -9.31% (p=0.004 n=5+6) /dataset.google_message3_3.pb/Marshal 43.7ms ± 1% 35.1ms ± 1% -19.76% (p=0.002 n=6+6) /dataset.google_message4.pb/Marshal 93.4ms ± 4% 94.9ms ± 2% ~ (p=0.180 n=6+6) /dataset.google_message3_2.pb/Marshal 105ms ± 2% 98ms ± 7% -6.81% (p=0.009 n=5+6) /dataset.google_message3_4.pb/Marshal 16.3ms ± 6% 15.7ms ± 3% -3.44% (p=0.041 n=6+6) /dataset.google_message3_5.pb/Marshal 676ms ± 4% 504ms ± 2% -25.50% (p=0.004 n=6+5) Change-Id: I72cc4597117f4cf5d236ef505777d49dd4a5f75d Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/171020 Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
578 lines
14 KiB
Go
578 lines
14 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package impl
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import (
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"fmt"
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"reflect"
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pref "google.golang.org/protobuf/reflect/protoreflect"
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)
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// pointerCoderFuncs is a set of pointer encoding functions.
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type pointerCoderFuncs struct {
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size func(p pointer, tagsize int, opts marshalOptions) int
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marshal func(b []byte, p pointer, wiretag uint64, opts marshalOptions) ([]byte, error)
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}
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// ifaceCoderFuncs is a set of interface{} encoding functions.
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type ifaceCoderFuncs struct {
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size func(ival interface{}, tagsize int, opts marshalOptions) int
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marshal func(b []byte, ival interface{}, wiretag uint64, opts marshalOptions) ([]byte, error)
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}
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// fieldCoder returns pointer functions for a field, used for operating on
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// struct fields.
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func fieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs {
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switch {
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case fd.Cardinality() == pref.Repeated && !fd.IsPacked():
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// Repeated fields (not packed).
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if ft.Kind() != reflect.Slice {
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break
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}
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ft := ft.Elem()
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBoolSlice
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnumSlice
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32Slice
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32Slice
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32Slice
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64Slice
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64Slice
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64Slice
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32Slice
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32Slice
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloatSlice
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64Slice
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64Slice
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDoubleSlice
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}
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case pref.StringKind:
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if ft.Kind() == reflect.String && fd.Syntax() == pref.Proto3 {
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return coderStringSliceValidateUTF8
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}
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if ft.Kind() == reflect.String {
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return coderStringSlice
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytesSlice
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}
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case pref.BytesKind:
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if ft.Kind() == reflect.String {
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return coderStringSlice
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytesSlice
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}
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case pref.MessageKind:
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return makeMessageSliceFieldCoder(fd, ft)
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case pref.GroupKind:
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return makeGroupSliceFieldCoder(fd, ft)
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}
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case fd.Cardinality() == pref.Repeated && fd.IsPacked():
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// Packed repeated fields.
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//
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// Only repeated fields of primitive numeric types
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// (Varint, Fixed32, or Fixed64 wire type) can be packed.
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if ft.Kind() != reflect.Slice {
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break
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}
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ft := ft.Elem()
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBoolPackedSlice
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnumPackedSlice
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32PackedSlice
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32PackedSlice
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32PackedSlice
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64PackedSlice
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64PackedSlice
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64PackedSlice
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32PackedSlice
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32PackedSlice
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloatPackedSlice
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64PackedSlice
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64PackedSlice
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDoublePackedSlice
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}
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}
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case fd.Kind() == pref.MessageKind:
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return makeMessageFieldCoder(fd, ft)
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case fd.Kind() == pref.GroupKind:
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return makeGroupFieldCoder(fd, ft)
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case fd.Syntax() == pref.Proto3 && fd.ContainingOneof() == nil:
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// Populated oneof fields always encode even if set to the zero value,
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// which normally are not encoded in proto3.
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBoolNoZero
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnumNoZero
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32NoZero
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32NoZero
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32NoZero
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64NoZero
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64NoZero
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64NoZero
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32NoZero
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32NoZero
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloatNoZero
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64NoZero
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64NoZero
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDoubleNoZero
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}
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case pref.StringKind:
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if ft.Kind() == reflect.String {
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return coderStringNoZeroValidateUTF8
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytesNoZero
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}
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case pref.BytesKind:
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if ft.Kind() == reflect.String {
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return coderStringNoZero
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytesNoZero
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}
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}
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case ft.Kind() == reflect.Ptr:
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ft := ft.Elem()
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBoolPtr
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnumPtr
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32Ptr
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32Ptr
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32Ptr
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64Ptr
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64Ptr
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64Ptr
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32Ptr
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32Ptr
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloatPtr
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64Ptr
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64Ptr
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDoublePtr
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}
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case pref.StringKind:
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if ft.Kind() == reflect.String {
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return coderStringPtr
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}
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case pref.BytesKind:
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if ft.Kind() == reflect.String {
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return coderStringPtr
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}
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}
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default:
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBool
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnum
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloat
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDouble
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}
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case pref.StringKind:
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if fd.Syntax() == pref.Proto3 && ft.Kind() == reflect.String {
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return coderStringValidateUTF8
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}
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if ft.Kind() == reflect.String {
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return coderString
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytes
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}
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case pref.BytesKind:
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if ft.Kind() == reflect.String {
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return coderString
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}
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if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
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return coderBytes
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}
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}
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}
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panic(fmt.Errorf("invalid type: no encoder for %v %v %v/%v", fd.FullName(), fd.Cardinality(), fd.Kind(), ft))
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}
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// encoderFuncsForValue returns interface{} value functions for a field, used for
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// extension values and map encoding.
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func encoderFuncsForValue(fd pref.FieldDescriptor, ft reflect.Type) ifaceCoderFuncs {
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switch {
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case fd.Cardinality() == pref.Repeated && !fd.IsPacked():
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if ft.Kind() != reflect.Ptr || ft.Elem().Kind() != reflect.Slice {
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break
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}
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ft := ft.Elem().Elem()
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switch fd.Kind() {
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case pref.BoolKind:
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if ft.Kind() == reflect.Bool {
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return coderBoolSliceIface
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}
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case pref.EnumKind:
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if ft.Kind() == reflect.Int32 {
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return coderEnumSliceIface
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}
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case pref.Int32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderInt32SliceIface
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}
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case pref.Sint32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSint32SliceIface
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}
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case pref.Uint32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderUint32SliceIface
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}
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case pref.Int64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderInt64SliceIface
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}
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case pref.Sint64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSint64SliceIface
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}
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case pref.Uint64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderUint64SliceIface
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}
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case pref.Sfixed32Kind:
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if ft.Kind() == reflect.Int32 {
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return coderSfixed32SliceIface
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}
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case pref.Fixed32Kind:
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if ft.Kind() == reflect.Uint32 {
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return coderFixed32SliceIface
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}
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case pref.FloatKind:
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if ft.Kind() == reflect.Float32 {
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return coderFloatSliceIface
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}
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case pref.Sfixed64Kind:
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if ft.Kind() == reflect.Int64 {
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return coderSfixed64SliceIface
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}
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case pref.Fixed64Kind:
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if ft.Kind() == reflect.Uint64 {
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return coderFixed64SliceIface
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}
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case pref.DoubleKind:
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if ft.Kind() == reflect.Float64 {
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return coderDoubleSliceIface
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}
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case pref.StringKind:
|
|
if ft.Kind() == reflect.String {
|
|
return coderStringSliceIface
|
|
}
|
|
if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
|
|
return coderBytesSliceIface
|
|
}
|
|
case pref.BytesKind:
|
|
if ft.Kind() == reflect.String {
|
|
return coderStringSliceIface
|
|
}
|
|
if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
|
|
return coderBytesSliceIface
|
|
}
|
|
case pref.MessageKind:
|
|
return coderMessageSliceIface
|
|
case pref.GroupKind:
|
|
return coderGroupSliceIface
|
|
}
|
|
case fd.Cardinality() == pref.Repeated && fd.IsPacked():
|
|
default:
|
|
switch fd.Kind() {
|
|
case pref.BoolKind:
|
|
if ft.Kind() == reflect.Bool {
|
|
return coderBoolIface
|
|
}
|
|
case pref.EnumKind:
|
|
if ft.Kind() == reflect.Int32 {
|
|
return coderEnumIface
|
|
}
|
|
case pref.Int32Kind:
|
|
if ft.Kind() == reflect.Int32 {
|
|
return coderInt32Iface
|
|
}
|
|
case pref.Sint32Kind:
|
|
if ft.Kind() == reflect.Int32 {
|
|
return coderSint32Iface
|
|
}
|
|
case pref.Uint32Kind:
|
|
if ft.Kind() == reflect.Uint32 {
|
|
return coderUint32Iface
|
|
}
|
|
case pref.Int64Kind:
|
|
if ft.Kind() == reflect.Int64 {
|
|
return coderInt64Iface
|
|
}
|
|
case pref.Sint64Kind:
|
|
if ft.Kind() == reflect.Int64 {
|
|
return coderSint64Iface
|
|
}
|
|
case pref.Uint64Kind:
|
|
if ft.Kind() == reflect.Uint64 {
|
|
return coderUint64Iface
|
|
}
|
|
case pref.Sfixed32Kind:
|
|
if ft.Kind() == reflect.Int32 {
|
|
return coderSfixed32Iface
|
|
}
|
|
case pref.Fixed32Kind:
|
|
if ft.Kind() == reflect.Uint32 {
|
|
return coderFixed32Iface
|
|
}
|
|
case pref.FloatKind:
|
|
if ft.Kind() == reflect.Float32 {
|
|
return coderFloatIface
|
|
}
|
|
case pref.Sfixed64Kind:
|
|
if ft.Kind() == reflect.Int64 {
|
|
return coderSfixed64Iface
|
|
}
|
|
case pref.Fixed64Kind:
|
|
if ft.Kind() == reflect.Uint64 {
|
|
return coderFixed64Iface
|
|
}
|
|
case pref.DoubleKind:
|
|
if ft.Kind() == reflect.Float64 {
|
|
return coderDoubleIface
|
|
}
|
|
case pref.StringKind:
|
|
if fd.Syntax() == pref.Proto3 && ft.Kind() == reflect.String {
|
|
return coderStringIfaceValidateUTF8
|
|
}
|
|
if ft.Kind() == reflect.String {
|
|
return coderStringIface
|
|
}
|
|
if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
|
|
return coderBytesIface
|
|
}
|
|
case pref.BytesKind:
|
|
if ft.Kind() == reflect.String {
|
|
return coderStringIface
|
|
}
|
|
if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
|
|
return coderBytesIface
|
|
}
|
|
case pref.MessageKind:
|
|
return coderMessageIface
|
|
case pref.GroupKind:
|
|
return coderGroupIface
|
|
}
|
|
}
|
|
panic(fmt.Errorf("invalid type: no encoder for %v %v %v/%v", fd.FullName(), fd.Cardinality(), fd.Kind(), ft))
|
|
}
|