121 lines
3.8 KiB
Go
121 lines
3.8 KiB
Go
// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expression
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import (
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"fmt"
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"testing"
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"github.com/pingcap/tidb/pkg/parser/ast"
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"github.com/pingcap/tidb/pkg/parser/mysql"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/chunk"
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"github.com/pingcap/tidb/pkg/util/mock"
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"github.com/stretchr/testify/require"
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)
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func genVecBuiltinRegexpBenchCaseForConstants(ctx BuildContext) (baseFunc builtinFunc, childrenFieldTypes []*types.FieldType, input *chunk.Chunk, output *chunk.Column) {
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const (
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numArgs = 2
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batchSz = 1024
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rePat = `\A[A-Za-z]{3,5}\d{1,5}[[:alpha:]]*\z`
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)
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childrenFieldTypes = make([]*types.FieldType, numArgs)
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for i := range numArgs {
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childrenFieldTypes[i] = eType2FieldType(types.ETString)
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}
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input = chunk.New(childrenFieldTypes, batchSz, batchSz)
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// Fill the first arg with some random string
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fillColumnWithGener(types.ETString, input, 0, newRandLenStrGener(10, 20))
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// It seems like we still need to fill this column, otherwise row.GetDatumRow() will crash
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fillColumnWithGener(types.ETString, input, 1, &constStrGener{s: rePat})
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args := make([]Expression, numArgs)
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args[0] = &Column{Index: 0, RetType: childrenFieldTypes[0]}
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args[1] = DatumToConstant(types.NewStringDatum(rePat), mysql.TypeString, 0)
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var err error
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baseFunc, err = funcs[ast.Regexp].getFunction(ctx, args)
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if err != nil {
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panic(err)
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}
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output = chunk.NewColumn(eType2FieldType(types.ETInt), batchSz)
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// Mess up the output to make sure vecEvalXXX to call ResizeXXX/ReserveXXX itself.
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output.AppendNull()
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return
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}
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func TestVectorizedBuiltinRegexpForConstants(t *testing.T) {
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ctx := mock.NewContext()
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bf, childrenFieldTypes, input, output := genVecBuiltinRegexpBenchCaseForConstants(ctx)
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require.True(t, bf.vectorized() && bf.isChildrenVectorized())
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err := vecEvalType(ctx, bf, types.ETInt, input, output)
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require.NoError(t, err)
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i64s := output.Int64s()
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it := chunk.NewIterator4Chunk(input)
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i := 0
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commentf := func(row int) string {
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return fmt.Sprintf("func: builtinRegexpUTF8Sig, row: %v, rowData: %v", row, input.GetRow(row).GetDatumRow(childrenFieldTypes))
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}
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for row := it.Begin(); row != it.End(); row = it.Next() {
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val, err := evalBuiltinFunc(bf, ctx, row)
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require.NoError(t, err)
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require.Equal(t, output.IsNull(i), val.IsNull(), commentf(i))
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if !val.IsNull() {
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require.Equal(t, types.KindInt64, val.Kind(), commentf(i))
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require.Equal(t, i64s[i], val.GetInt64(), commentf(i))
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}
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i++
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}
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}
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func BenchmarkVectorizedBuiltinRegexpForConstants(b *testing.B) {
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ctx := mock.NewContext()
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bf, _, input, output := genVecBuiltinRegexpBenchCaseForConstants(ctx)
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if !bf.vectorized() || !bf.isChildrenVectorized() {
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panic("builtinRegexpUTF8Sig is not vectorized")
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}
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b.Run("builtinRegexpUTF8Sig-Constants-VecBuiltinFunc", func(b *testing.B) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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if err := bf.vecEvalInt(ctx, input, output); err != nil {
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b.Fatal(err)
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}
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}
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})
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b.Run("builtinRegexpUTF8Sig-Constants-NonVecBuiltinFunc", func(b *testing.B) {
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b.ResetTimer()
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it := chunk.NewIterator4Chunk(input)
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for i := 0; i < b.N; i++ {
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output.Reset(types.ETInt)
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for row := it.Begin(); row != it.End(); row = it.Next() {
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v, isNull, err := bf.evalInt(ctx, row)
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if err != nil {
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b.Fatal(err)
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}
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if isNull {
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output.AppendNull()
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} else {
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output.AppendInt64(v)
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}
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}
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}
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})
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}
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