// Copyright 2018 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 aggregation import ( "testing" "github.com/pingcap/parser/ast" "github.com/pingcap/parser/mysql" "github.com/pingcap/tidb/expression" "github.com/pingcap/tidb/types" "github.com/pingcap/tidb/util/mock" ) func BenchmarkCreateContext(b *testing.B) { col := &expression.Column{ Index: 0, RetType: types.NewFieldType(mysql.TypeLonglong), } ctx := mock.NewContext() desc, err := NewAggFuncDesc(ctx, ast.AggFuncAvg, []expression.Expression{col}, false) if err != nil { b.Fatal(err) } fun := desc.GetAggFunc(ctx) b.StartTimer() for i := 0; i < b.N; i++ { fun.CreateContext(ctx.GetSessionVars().StmtCtx) } b.ReportAllocs() } func BenchmarkResetContext(b *testing.B) { col := &expression.Column{ Index: 0, RetType: types.NewFieldType(mysql.TypeLonglong), } ctx := mock.NewContext() desc, err := NewAggFuncDesc(ctx, ast.AggFuncAvg, []expression.Expression{col}, false) if err != nil { b.Fatal(err) } fun := desc.GetAggFunc(ctx) evalCtx := fun.CreateContext(ctx.GetSessionVars().StmtCtx) b.StartTimer() for i := 0; i < b.N; i++ { fun.ResetContext(ctx.GetSessionVars().StmtCtx, evalCtx) } b.ReportAllocs() } func BenchmarkCreateDistinctContext(b *testing.B) { col := &expression.Column{ Index: 0, RetType: types.NewFieldType(mysql.TypeLonglong), } ctx := mock.NewContext() desc, err := NewAggFuncDesc(ctx, ast.AggFuncAvg, []expression.Expression{col}, true) if err != nil { b.Fatal(err) } fun := desc.GetAggFunc(ctx) b.StartTimer() for i := 0; i < b.N; i++ { fun.CreateContext(ctx.GetSessionVars().StmtCtx) } b.ReportAllocs() } func BenchmarkResetDistinctContext(b *testing.B) { col := &expression.Column{ Index: 0, RetType: types.NewFieldType(mysql.TypeLonglong), } ctx := mock.NewContext() desc, err := NewAggFuncDesc(ctx, ast.AggFuncAvg, []expression.Expression{col}, true) if err != nil { b.Fatal(err) } fun := desc.GetAggFunc(ctx) evalCtx := fun.CreateContext(ctx.GetSessionVars().StmtCtx) b.StartTimer() for i := 0; i < b.N; i++ { fun.ResetContext(ctx.GetSessionVars().StmtCtx, evalCtx) } b.ReportAllocs() }