新增时间轮定时器

node/node.go

@@ -44,7 +44,7 @@ func usage(val interface{}) error{
 		return nil
 	}
 
-	fmt.Fprintf(os.Stderr, `orgin version: orgin/2.11.20201023
+	fmt.Fprintf(os.Stderr, `orgin version: orgin/2.12.20201024
 Usage: originserver [-help] [-start node=1] [-stop] [-config path] [-pprof 0.0.0.0:6060]
 `)
 	console.PrintDefaults()

service/service.go

@@ -138,13 +138,15 @@ func (slf *Service) Run() {
 				analyzer = nil
 			}
 		case t := <- slf.dispatcher.ChanTimer:
-			if slf.profiler!=nil {
-				analyzer = slf.profiler.Push(fmt.Sprintf("Timer_%s", t.GetFunctionName()))
-			}
-			t.Cb()
-			if analyzer!=nil {
-				analyzer.Pop()
-				analyzer = nil
+			if t.IsStop() == false {
+				if slf.profiler != nil {
+					analyzer = slf.profiler.Push(fmt.Sprintf("Timer_%s", t.AdditionData.(*timer.Timer).GetFunctionName()))
+				}
+				t.AdditionData.(*timer.Timer).Cb()
+				if analyzer != nil {
+					analyzer.Pop()
+					analyzer = nil
+				}
 			}
 		}
 

util/timer/timer.go

@@ -3,6 +3,7 @@ package timer
 import (
 	"fmt"
 	"github.com/duanhf2012/origin/log"
+	"github.com/duanhf2012/origin/util/timewheel"
 	"reflect"
 	"runtime"
 	"time"
@@ -10,18 +11,18 @@ import (
 
 // one dispatcher per goroutine (goroutine not safe)
 type Dispatcher struct {
-	ChanTimer chan *Timer
+	ChanTimer chan *timewheel.Timer
 }
 
 func NewDispatcher(l int) *Dispatcher {
 	disp := new(Dispatcher)
-	disp.ChanTimer = make(chan *Timer, l)
+	disp.ChanTimer = make(chan *timewheel.Timer, l)
 	return disp
 }
 
 // Timer
 type Timer struct {
-	t  *time.Timer
+	t  *timewheel.Timer
 	cb func()
 	cbex func(*Timer)
 	name string
@@ -58,10 +59,7 @@ func (disp *Dispatcher) AfterFunc(d time.Duration, cb func()) *Timer {
 	t := new(Timer)
 	t.cb = cb
 	t.name = reflect.TypeOf(cb).Name()
-
-	t.t = time.AfterFunc(d, func() {
-		disp.ChanTimer <- t
-	})
+	t.t = timewheel.NewTimerEx(d,disp.ChanTimer,t)
 
 	return t
 }
@@ -69,14 +67,9 @@ func (disp *Dispatcher) AfterFunc(d time.Duration, cb func()) *Timer {
 func (disp *Dispatcher) AfterFuncEx(funName string,d time.Duration, cbex func(timer *Timer)) *Timer {
 	t := new(Timer)
 	t.cbex = cbex
-	t.name = funName//reflect.TypeOf(cbex).Name()
-	//t.name = runtime.FuncForPC(reflect.ValueOf(cbex).Pointer()).Name()
-	t.t = time.AfterFunc(d, func() {
-		if disp == nil {
-			return
-		}
-		disp.ChanTimer <- t
-	})
+	t.name = funName
+	t.t = timewheel.NewTimerEx(d,disp.ChanTimer,t)
+
 	return t
 }
 

util/timewheel/timewheel.go

@@ -9,24 +9,22 @@ import (
 //--------------------------
 //| 6 | 6 | 6 | 6 | 8 |
 //--------------------------
-
-var GRANULARITY int64 = 10//10ms
-var OnTimerChannelSize int = 1000
-var wheelBitSize =[]int{8,6,6,6,6} //32bit定时器
+//根据游戏定时器，将第一轮控制在12位，即40960ms以内。
+var GRANULARITY int64 = 10         //定时器的最小单位，每格10ms
+//var wheelBitSize =[]int{8,6,6,6,6} //32bit定时器
+var wheelBitSize =[]int{12,7,6,5,2} //32bit定时器
 
 type wheelInfo struct {
-	slotNum int     //slot数量
-	threshold int64   //
-	//mask int
-	//bits int
+	slotNum int       //轮子slot数量
+	threshold int64   //轮子最大表示数字范围,如果是第一个轮子2^8,第二个轮子是2^6...
 }
 
-//type OnTimerCB func()
-var tWheel *timeWheel
-var chanStartTimer chan *Timer
-var chanStopTimer chan *Timer
-const chanTimerLen int = 40960
+var tWheel *timeWheel           //时间实例化对象指针
+var chanStartTimer chan *Timer  //开始定时器Channel
+var chanStopTimer chan *Timer   //停止定时器Channel
+const chanTimerLen int = 40960  //Channel
 
+//构造时间轮对象与相关初始化
 func init(){
 	tWheel = newTimeWheel()
 	chanStartTimer = make(chan *Timer,chanTimerLen)
@@ -35,9 +33,14 @@ func init(){
 	go timerRunning()
 }
 
+//定时器运行与驱动
 func timerRunning(){
 	t := time.NewTicker(time.Microsecond*5)
 	for {
+/*		if test == true {
+			testTimerRunning()
+		}
+ */
 		select{
 			case startTimer:=<-chanStartTimer:
 				tWheel.addTimer(startTimer)
@@ -48,12 +51,20 @@ func timerRunning(){
 		}
 	}
 }
+/*
+var test bool = false
+func testTimerRunning(){
+	for {
+		tWheel.TickOneFrame()
+	}
+}
+*/
 
-func NewCBTimer(d time.Duration,f func(),c chan *Timer) *Timer{
+func NewTimerEx(d time.Duration,c chan *Timer,additionData interface{}) *Timer{
 	if c == nil {
 		c = make(chan *Timer, 1)
 	}
-	timer := tWheel.newTimer(d.Milliseconds(),f,c)
+	timer := tWheel.newTimer(d.Milliseconds()/GRANULARITY,additionData,c)
 	chanStartTimer<-timer
 	return timer
 }
@@ -64,78 +75,94 @@ func NewTimer(d time.Duration) *Timer{
 	return timer
 }
 
-
+//链表结点
 type stNode struct {
 	prev *Timer
 	next *Timer
 }
 
+//定时器结构体
 type Timer struct {
 	stNode
-	timerCB func()
-	expireTicks int64     //到期滴答数
-	isClose int32
-	C chan *Timer
+	expireTicks  int64       //到期滴答数
+	isClose      int32       //是否已经关闭0表示开启状态,1表示关闭
+	C            chan *Timer //定时器管道
+	AdditionData interface{} //定时器附加数据
 }
 
+//停止停时器
 func (timer *Timer) Stop(){
+	//将关闭标志设为1关闭状态
 	atomic.StoreInt32(&timer.isClose,1)
 	chanStopTimer<-timer
 }
 
+//定时器是否已经停止
 func (timer *Timer) IsStop() bool {
 	return atomic.LoadInt32(&timer.isClose) != 0
 }
 
-type Slots struct {
-	timer *Timer
-	restTicks int64
+//每个时间轮上的刻度
+type slots struct {
+	timer *Timer     //定时器链表头
+	restTicks int64  //当前刻度走完一圈剩余时间ticks
 }
 
+//时间轮子
 type stWheel struct {
-	slots []*Slots
-	slotIndex int
+	slots []*slots   //刻度切片
+	slotIndex int    //当前指针所在的位置索引
 }
 
+//获取当前轮的总刻度数
 func (stw *stWheel) slotSize() int{
 	return len(stw.slots)
 }
 
-func (s *Slots) addTimer(timer *Timer){
+//添加定时器到slots上
+func (s *slots) addTimer(timer *Timer){
 	timer.next = s.timer
 	timer.prev = s.timer.prev
 	s.timer.prev.next = timer
 	s.timer.prev = timer
 }
 
-func (s *Slots) isEmpty() bool{
+//当前slots上是否没有定时器
+func (s *slots) isEmpty() bool{
 	return s.timer == s.timer.next
 }
 
-type timeWheel struct {
-	wheels []*stWheel
-	wheelInfos []*wheelInfo
-	wheelSize int
-	//chanTimer chan *Timer
-
-	currentTime int64 //
-	currentTicks int64  //当前检查的帧数
+func (s *slots) makeEmpty() {
+	s.timer.next = s.timer
+	s.timer.prev = s.timer
 }
 
+
+//时间轮结构体
+type timeWheel struct {
+	wheels []*stWheel         //所有的轮子的切片
+	wheelInfos []*wheelInfo   //所有轮子的信息，预计算存储
+	wheelSize int             //轮子数
+
+	currentTime int64         //当前已经走进的的自然时间
+	currentTicks int64        //当前已经走进的ticks数
+}
+
+//构建时间轮对象
 func newTimeWheel() *timeWheel{
 	tWheel := &timeWheel{}
-	tWheel.Set(wheelBitSize)
-	//tWheel.chanTimer = make(chan *Timer,OnTimerChannelSize)
+	tWheel.set(wheelBitSize)
 	tWheel.currentTime = GetNow()
 	return tWheel
 }
 
-
-func (t *timeWheel) Set(wheelBitSize []int){
+//设置n位定时器
+func (t *timeWheel) set(wheelBitSize []int){
 	t.wheelSize = len(wheelBitSize)
 	t.wheelInfos = make([]*wheelInfo,len(wheelBitSize))
 	t.wheels = make([]*stWheel,len(wheelBitSize))
 	totalBitSize := 0
+
 	for idx,bitSize := range wheelBitSize {
 		totalBitSize += bitSize
 		//1.轮子信息
@@ -145,9 +172,14 @@ func (t *timeWheel) Set(wheelBitSize []int){
 
 		//2.make轮子里面的slot
 		t.wheels[idx] = &stWheel{}
-		t.wheels[idx].slots = make([]*Slots,t.wheelInfos[idx].slotNum)
+		t.wheels[idx].slots = make([]*slots,t.wheelInfos[idx].slotNum)
 		for slotIdx,_ := range t.wheels[idx].slots {
 			t.wheels[idx].slots[slotIdx] = t.newSlot(t.wheels[idx].slots[slotIdx])
+
+			//计算当前slot走完剩余的ticks数，以下turns有个特殊处理
+			//第一个轮子idx==0时每个slot的刻度代表1,从第二个轮子开始即idx>0根据
+			//t.wheelInfos[idx-1].threshold获得每个刻度值
+			//turns代表由于前一轮已经走一圈了,那么当前slotIdex应该加1，即：slotIdx+turns
 			var perSlotTicks int64 = 1
 			turns := 0
 			if idx>0 {
@@ -160,76 +192,86 @@ func (t *timeWheel) Set(wheelBitSize []int){
 	}
 }
 
-func (t *timeWheel) newSlot(slots *Slots) *Slots{
-	if slots == nil {
-		slots = &Slots{}
+//构建一个slot(轮子上的刻度)
+func (t *timeWheel) newSlot(slot *slots) *slots{
+	//如果是不存在的slot申请内存
+	if slot == nil {
+		slot = &slots{}
 		timer := &Timer{}
-		slots.timer = timer
+		slot.timer = timer
 	}
 
-	slots.timer.next = slots.timer
-	slots.timer.prev = slots.timer
+	//构建双向循环链表
+	slot.timer.next = slot.timer
+	slot.timer.prev = slot.timer
 
-	return slots
+	return slot
 }
 
+
+//获取当前时间戳ms
 func GetNow() int64 {
 	return time.Now().UnixNano()/int64(time.Millisecond)
 }
 
-
-func (t *timeWheel) newTimer(ticks int64,f func(),c chan *Timer) *Timer{
-	return &Timer{timerCB: f,expireTicks:ticks+t.currentTicks,C:c}
+//创建定时器 ticks表示多少个ticks单位到期, additionData定时器附带数据, c到时通知的channel
+func (t *timeWheel) newTimer(ticks int64,additionData interface{},c chan *Timer) *Timer{
+	return &Timer{AdditionData: additionData,expireTicks:ticks+t.currentTicks,C:c}
 }
 
 
 func ReleaseTimer(timer *Timer) {
 }
-/*
-func (t *timeWheel) AddTimer(milSeconds int,onTimer OnTimerCB) *Timer {
-	ticks := milSeconds / GRANULARITY
-	timer := t.newTimer(milSeconds,ticks,onTimer)
-	return t.addTimer(timer)
-}
-*/
 
+//添加定时器
 func (t *timeWheel) addTimer(timer *Timer) *Timer {
+	//1.计算到期时间ticks
 	ticks := timer.expireTicks - t.currentTicks
-	var slot *Slots
+
+	//2.for遍历通过ticks找到适合的轮子插入,从底轮子往高找
+	var slot *slots
 	for wheelIndex,info :=  range t.wheelInfos {
 		if ticks < info.threshold {
-			var subValue int64
-			var offSet int64
-			index := 0
+			var restTicks int64
+			var slotTicks int64
+			var slotIndex int
+			//如果不是第0个轮子
 			if wheelIndex != 0 {
-				subValue =  t.getWheelSum(wheelIndex)//t.wheelInfos[wheelIndex-1].threshold*t.wheels[wheelIndex].slotIndex
-				offSet = t.wheelInfos[wheelIndex-1].threshold
-				index = (t.wheels[wheelIndex].slotIndex+int((ticks-subValue)/offSet)) % t.wheelInfos[wheelIndex].slotNum///(ticks - subValue + offSet)>>bits&info.mask
+				//计算前面所有的轮子剩余ticks数总和(即：当前轮子还有多少个ticks会移动到下一个)
+				restTicks =  t.getWheelSum(wheelIndex)
+				//当前轮子每个刻度的ticks数
+				slotTicks = t.wheelInfos[wheelIndex-1].threshold
+				//计算当前落到哪个slotIndex中
+				slotIndex = (t.wheels[wheelIndex].slotIndex+int((ticks-restTicks)/slotTicks)) % t.wheelInfos[wheelIndex].slotNum
 			}else{
-				index = (t.wheels[wheelIndex].slotIndex + int(ticks))%t.wheelInfos[wheelIndex].slotNum
+				slotIndex = (t.wheels[wheelIndex].slotIndex + int(ticks))%t.wheelInfos[wheelIndex].slotNum
 			}
-
-			slot = t.wheels[wheelIndex].slots[index]
+			//取得slot对象指针
+			slot = t.wheels[wheelIndex].slots[slotIndex]
 			break
 		}
 	}
 
-	//插入到指定位置
+	//3.如果都找不到失败
 	if slot == nil {
-		return nil
+		panic("cannot find slot!")
+		//return nil
 	}
 
+	//4.添加定时器timer到链表
 	slot.addTimer(timer)
 	return timer
 }
 
+//删除定时器
 func (t *timeWheel) delTimer(timer *Timer) {
 	timer.prev.next = timer.next
 	timer.next.prev = timer.prev
-	//ReleaseTimer(timer)
+	timer.next = nil
+	timer.prev = nil
 }
 
-
+//按照自然时间走动时间差计算loop，并且进行Tick
 func (t *timeWheel) Tick(){
 	nowTime := GetNow()
 
@@ -243,15 +285,15 @@ func (t *timeWheel) Tick(){
 	}
 }
 
+//Tick一帧
 func (t *timeWheel) TickOneFrame(){
 	//1.往前走一个Tick
 	t.currentTicks += 1
 
-	//2.将当前slot全部超时处理
+	//2.将当前slot全部到时处理
 	slot := t.wheels[0].slots[t.wheels[0].slotIndex]
-	bEmpty := true
 	for currTimer := slot.timer.next;currTimer!=slot.timer;currTimer = currTimer.next {
-		bEmpty = false
+		//如果当前定时器已经停止,不做任何处理.否则放入到定时器的channel
 		if currTimer.IsStop() == true {
 			continue
 		}
@@ -260,49 +302,36 @@ func (t *timeWheel) TickOneFrame(){
 		}
 	}
 
-	//重新构建
-	if bEmpty == false {
-		t.wheels[0].slots[t.wheels[0].slotIndex] = t.newSlot(slot)
-	}
+	//3.将timer全部清空处理
+	t.wheels[0].slots[t.wheels[0].slotIndex].makeEmpty()
 
-	//3.指针转动
+	//4.指针转动
 	t.wheels[0].slotIndex+=1
+
+	//5.如果当前刻度转完一轮时,从0表示，并处理下一个轮子的计算
 	if t.wheels[0].slotIndex >= t.wheels[0].slotSize() {
 		t.wheels[0].slotIndex = 0
 		t.cascade(1)
 	}
 }
 
-func (t *timeWheel) getCurrentSlot(wheelIndex int) *Slots{
+//获得当前轮子的slots
+func (t *timeWheel) getCurrentSlot(wheelIndex int) *slots{
 	return t.wheels[wheelIndex].slots[t.wheels[wheelIndex].slotIndex]
 }
 
+//获取当前轮wheelIndex转动所需要的ticks数量
 func (t *timeWheel) getWheelSum(wheelIndex int) int64{
-	var sum int64
+	var ticks int64
+	//遍历前面n个轮子
 	for i:=0;i<wheelIndex;i++{
-		sum += t.getCurrentSlot(i).restTicks
-	}
-/*
-	if sum != t.getWheelSumEx(wheelIndex) {
-		sum = 0
-	}
-*/
-	return sum
-}
-/*
-func (t *timeWheel) getWheelSumEx(wheelIndex int) int{
-	sum := 0
-	for i:=0;i<wheelIndex;i++{
-		if i == 0 {
-			sum += t.wheels[i].slotSize() - t.wheels[i].slotIndex
-		}else{
-			sum += (t.wheels[i].slotSize() - (t.wheels[i].slotIndex+1))*t.wheelInfos[i-1].threshold
-		}
+		ticks += t.getCurrentSlot(i).restTicks
 	}
 
-	return sum
+	return ticks
 }
-*/
+
+//转动下一个轮子(即wheelIndex>0的轮子)
 func (t *timeWheel) cascade(wheelIndex int) {
 	if wheelIndex<1 || wheelIndex>=t.wheelSize {
 		return
@@ -314,10 +343,10 @@ func (t *timeWheel) cascade(wheelIndex int) {
 
 	//2.将当前的slot遍历并重新加入
 	currentTimer := slot.timer.next
-	bEmpty := true
 	for ;currentTimer!=slot.timer; {
+		//先保存一个定时器指针,预防链表迭代失效问题
 		nextTimer:=currentTimer.next
-		//如果到时
+		//如果到时,直接送到channel
 		if currentTimer.expireTicks<= t.currentTicks {
 			if currentTimer.IsStop() == false {
 				select {
@@ -328,15 +357,11 @@ func (t *timeWheel) cascade(wheelIndex int) {
 			t.addTimer(currentTimer)
 		}
 		currentTimer = nextTimer
-		bEmpty = false
 	}
+	//3.将当前轮清空
+	wheel.slots[wheel.slotIndex].makeEmpty()
 
-	if bEmpty == false {
-		wheel.slots[wheel.slotIndex] = t.newSlot(wheel.slots[wheel.slotIndex])
-	}
-
-
-	//如果轮子到了最大值，需要跳轮
+	//4.如果当前轮子跳过一轮,需要跳动到下一时间轮
 	wheel.slotIndex++
 	if wheel.slotIndex>=wheel.slotSize() {
 		wheel.slotIndex = 0

util/timewheel/timewheel_test.go

@@ -1,74 +1,31 @@
 package timewheel
 
 import (
-	"fmt"
 	"testing"
 	"time"
+	"fmt"
 )
 
-var timerCount int
-
-var mapId map[int] interface{}
-
 func Test_Example(t *testing.T) {
-	now := time.Now()
-	timer := NewTimer(time.Millisecond*20)
+	timer:=NewTimer(time.Second*2)
 	select {
-		case <-timer.C:
-			fmt.Print("xxx:")
-	}
-	fmt.Println(time.Now().Sub(now).Milliseconds())
-	/*
-	rand.Seed(time.Now().UnixNano())
-	timeWheel := NewTimeWheel()
-	mapId = map[int] interface{}{}
-
-	time.Sleep(time.Duration(rand.Intn(100))*time.Millisecond)
-	timeWheel.Tick()
-	time.AfterFunc()
-
-	for i:=100000000;i<200000000;i++{
-		r := rand.Intn(100)
-		timeWheel.AddTimer(i+r,func(){
-			fmt.Print("+\n")
-		})
-
-		time.NewTicker()
-		time.AfterFunc()
-
-		timerCount+=1
+		case <- timer.C:
+			fmt.Println("It is time out!")
 	}
 
-	fmt.Println("add finish..")
-
-	go func(){
-		for{
-			select {
-			case t:=<-timeWheel.chanTimer:
-
-				timerCount--
-				if timerCount == 0 {
-					fmt.Printf("finish...\n")
-				}
-				if t.tmp-t.expireTicks >1 {
-					fmt.Printf("err:%d:%d\n",t.expireTicks,t.tmp-t.expireTicks)
-				}else{
-
-					if t.expireTicks%100000 == 0 {
-						fmt.Printf("%d:%d:%d\n",t.expireTicks,t.tmp-t.expireTicks,t.tmpMilSeconds)
-					}
-
-					//t.timerCB()
-				}
-			}
-		}
-	}()
-
-	for{
-
-		timeWheel.TickOneFrame()
-		//time.Sleep(1*time.Microsecond)
-		//fmt.Println(".")
+	timer2 := NewTimerEx(time.Second*2,nil,1)
+	select {
+	case t:=<- timer2.C:
+		fmt.Println("It is time out!",t.AdditionData.(int))
+	}
+
+	timer3 := NewTimerEx(time.Second*2,nil,1)
+	timer3.Stop()
+	time.Sleep(3*time.Second)
+	select {
+	case t:=<- timer2.C:
+		fmt.Println("It is time out!",t.AdditionData.(int))
+	default:
+		fmt.Printf("time is stop")
 	}
-*/
 }