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