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receiver_operator.go
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/
receiver_operator.go
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// Copyright 2023 Matrix Origin
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package colexec
import (
"reflect"
"time"
"github.com/matrixorigin/matrixone/pkg/container/batch"
"github.com/matrixorigin/matrixone/pkg/vm/process"
)
// isMergeType means the receiver operator receive batch from all regs or single by some order
// Merge/MergeGroup/MergeLimit ... are Merge-Type
// while Join/Intersect/Minus ... are not
func (r *ReceiverOperator) InitReceiver(proc *process.Process, isMergeType bool) {
r.proc = proc
if isMergeType {
r.aliveMergeReceiver = len(proc.Reg.MergeReceivers)
r.chs = make([]chan *batch.Batch, r.aliveMergeReceiver)
r.receiverListener = make([]reflect.SelectCase, r.aliveMergeReceiver+1)
r.receiverListener[0] = reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(r.proc.Ctx.Done())}
for i, mr := range proc.Reg.MergeReceivers {
r.chs[i] = mr.Ch
r.receiverListener[i+1] = reflect.SelectCase{
Dir: reflect.SelectRecv,
Chan: reflect.ValueOf(mr.Ch),
}
}
}
}
func (r *ReceiverOperator) ReceiveFromSingleReg(regIdx int, analyze process.Analyze) (*batch.Batch, bool, error) {
start := time.Now()
defer analyze.WaitStop(start)
select {
case <-r.proc.Ctx.Done():
return nil, true, nil
case bat, ok := <-r.proc.Reg.MergeReceivers[regIdx].Ch:
if !ok {
return nil, true, nil
}
return bat, false, nil
}
}
func (r *ReceiverOperator) ReceiveFromSingleRegNonBlock(regIdx int, analyze process.Analyze) (*batch.Batch, bool, error) {
start := time.Now()
defer analyze.WaitStop(start)
select {
case <-r.proc.Ctx.Done():
return nil, true, nil
case bat, ok := <-r.proc.Reg.MergeReceivers[regIdx].Ch:
if !ok || bat == nil {
return nil, true, nil
}
return bat, false, nil
default:
return nil, false, nil
}
}
func (r *ReceiverOperator) FreeAllReg() {
for i := range r.proc.Reg.MergeReceivers {
r.FreeSingleReg(i)
}
}
func (r *ReceiverOperator) FreeSingleReg(regIdx int) {
w := r.proc.Reg.MergeReceivers[regIdx]
w.CleanChannel(r.proc.GetMPool())
}
// You MUST Init ReceiverOperator with Merge-Type
// if you want to use this function
func (r *ReceiverOperator) ReceiveFromAllRegs(analyze process.Analyze) (*batch.Batch, bool, error) {
for {
if r.aliveMergeReceiver == 0 {
return nil, true, nil
}
start := time.Now()
chosen, bat, ok := r.selectFromAllReg()
analyze.WaitStop(start)
// chosen == 0 means the info comes from proc context.Done
if chosen == 0 {
return nil, true, nil
}
if !ok {
return nil, true, nil
}
if bat == nil {
continue
}
if bat.IsEmpty() {
r.proc.PutBatch(bat)
continue
}
return bat, false, nil
}
}
func (r *ReceiverOperator) FreeMergeTypeOperator(failed bool) {
if len(r.receiverListener) > 0 {
// Remove the proc context.Done waiter because it MUST BE done
// when called this function
r.receiverListener = r.receiverListener[1:]
}
mp := r.proc.Mp()
// Senders will never send more because the context is done.
for _, ch := range r.chs {
for len(ch) > 0 {
bat := <-ch
if bat != nil {
bat.Clean(mp)
}
}
}
}
func (r *ReceiverOperator) RemoveChosen(idx int) {
if idx == 0 {
return
}
r.receiverListener = append(r.receiverListener[:idx], r.receiverListener[idx+1:]...)
//remove idx-1 from chs
r.chs = append(r.chs[:idx-1], r.chs[idx:]...)
r.aliveMergeReceiver--
}
func (r *ReceiverOperator) DisableChosen(idx int) {
if idx == 0 {
return
}
//disable idx-1 from chs
r.chs[idx-1] = nil
r.aliveMergeReceiver--
}
func (r *ReceiverOperator) selectFromAllReg() (int, *batch.Batch, bool) {
var bat *batch.Batch
chosen := 0
var ok bool
switch len(r.chs) {
case 1:
chosen, bat, ok = r.selectFrom1Reg()
case 2:
chosen, bat, ok = r.selectFrom2Reg()
case 3:
chosen, bat, ok = r.selectFrom3Reg()
case 4:
chosen, bat, ok = r.selectFrom4Reg()
case 5:
chosen, bat, ok = r.selectFrom5Reg()
case 6:
chosen, bat, ok = r.selectFrom6Reg()
case 7:
chosen, bat, ok = r.selectFrom7Reg()
case 8:
chosen, bat, ok = r.selectFrom8Reg()
case 9:
chosen, bat, ok = r.selectFrom9Reg()
case 10:
chosen, bat, ok = r.selectFrom10Reg()
case 11:
chosen, bat, ok = r.selectFrom11Reg()
case 12:
chosen, bat, ok = r.selectFrom12Reg()
case 13:
chosen, bat, ok = r.selectFrom13Reg()
case 14:
chosen, bat, ok = r.selectFrom14Reg()
case 15:
chosen, bat, ok = r.selectFrom15Reg()
case 16:
chosen, bat, ok = r.selectFrom16Reg()
case 32:
chosen, bat, ok = r.selectFrom32Reg()
case 48:
chosen, bat, ok = r.selectFrom48Reg()
case 64:
chosen, bat, ok = r.selectFrom64Reg()
case 80:
chosen, bat, ok = r.selectFrom80Reg()
default:
var value reflect.Value
chosen, value, ok = reflect.Select(r.receiverListener)
if chosen != 0 && ok {
bat = (*batch.Batch)(value.UnsafePointer())
}
if !ok || bat == nil {
r.RemoveChosen(chosen)
}
return chosen, bat, ok
}
if !ok || bat == nil {
r.DisableChosen(chosen)
}
return chosen, bat, ok
}