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// 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()
}