// Copyright 2019 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package expression import ( "math/rand" "testing" "github.com/pingcap/parser/mysql" "github.com/pingcap/tidb/types" "github.com/pingcap/tidb/util/chunk" "github.com/pingcap/tidb/util/mock" ) func genCastIntAsInt() (*builtinCastIntAsIntSig, *chunk.Chunk, *chunk.Column) { col := &Column{RetType: types.NewFieldType(mysql.TypeLonglong), Index: 0} baseFunc, err := newBaseBuiltinFunc(mock.NewContext(), "", []Expression{col}) if err != nil { panic(err) } baseCast := newBaseBuiltinCastFunc(baseFunc, false) cast := &builtinCastIntAsIntSig{baseCast} input := chunk.NewChunkWithCapacity([]*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}, 1024) for i := 0; i < 1024; i++ { input.AppendInt64(0, rand.Int63n(10000)-5000) } result := chunk.NewColumn(types.NewFieldType(mysql.TypeLonglong), 1024) return cast, input, result } func BenchmarkCastIntAsIntRow(b *testing.B) { cast, input, _ := genCastIntAsInt() it := chunk.NewIterator4Chunk(input) b.ResetTimer() for i := 0; i < b.N; i++ { for row := it.Begin(); row != it.End(); row = it.Next() { if _, _, err := cast.evalInt(row); err != nil { b.Fatal(err) } } } } func BenchmarkCastIntAsIntVec(b *testing.B) { cast, input, result := genCastIntAsInt() b.ResetTimer() for i := 0; i < b.N; i++ { if err := cast.vecEvalInt(input, result); err != nil { b.Fatal(err) } } }