ActorTaskQueue (Zeebe Util 0.16.4 API)

java.lang.Object
- io.zeebe.util.sched.ActorTaskQueue

```
public class ActorTaskQueue
extends Object
```
Adapted from Agrona's ManyToOneConcurrentLinkedQueue.

Field Summary

Fields
Modifier and Type	Field and Description
`protected io.zeebe.util.sched.ActorTaskQueueNode`	`head`
`protected static long`	`HEAD_OFFSET`
`protected static long`	`NEXT_OFFSET`
`protected long`	`p1`
`protected long`	`p10`
`protected long`	`p11`
`protected long`	`p12`
`protected long`	`p13`
`protected long`	`p14`
`protected long`	`p15`
`protected long`	`p16`
`protected long`	`p17`
`protected long`	`p18`
`protected long`	`p19`
`protected long`	`p2`
`protected long`	`p20`
`protected long`	`p21`
`protected long`	`p22`
`protected long`	`p23`
`protected long`	`p24`
`protected long`	`p25`
`protected long`	`p26`
`protected long`	`p27`
`protected long`	`p28`
`protected long`	`p29`
`protected long`	`p3`
`protected long`	`p30`
`protected long`	`p31`
`protected long`	`p32`
`protected long`	`p33`
`protected long`	`p34`
`protected long`	`p35`
`protected long`	`p36`
`protected long`	`p37`
`protected long`	`p38`
`protected long`	`p39`
`protected long`	`p4`
`protected long`	`p40`
`protected long`	`p41`
`protected long`	`p42`
`protected long`	`p43`
`protected long`	`p44`
`protected long`	`p45`
`protected long`	`p5`
`protected long`	`p6`
`protected long`	`p7`
`protected long`	`p8`
`protected long`	`p9`
`protected static long`	`PREV_OFFSET`
`protected static long`	`STATE_COUNT_OFFSET`
`protected io.zeebe.util.sched.ActorTaskQueueNode`	`tail`
`protected static long`	`TAIL_OFFSET`

Constructor Summary

Constructors
Constructor and Description

ActorTaskQueue()

Constructors
Constructor and Description
`ActorTaskQueue()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`append(ActorTask task)` appends a task at the end (tail) of the list
`boolean`	`isEmpty()`
`io.zeebe.util.sched.ActorTaskQueueNode`	`peek()`
`ActorTask`	`pop()`
`ActorTask`	`trySteal()` Attempts to steal a task from this list.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

p31
```
protected long p31
```

p32
```
protected long p32
```

p33
```
protected long p33
```

p34
```
protected long p34
```

p35
```
protected long p35
```

p36
```
protected long p36
```

p37
```
protected long p37
```

p38
```
protected long p38
```

p39
```
protected long p39
```

p40
```
protected long p40
```

p41
```
protected long p41
```

p42
```
protected long p42
```

p43
```
protected long p43
```

p44
```
protected long p44
```

p45
```
protected long p45
```

head

protected volatile io.zeebe.util.sched.ActorTaskQueueNode head

p16
```
protected long p16
```

p17
```
protected long p17
```

p18
```
protected long p18
```

p19
```
protected long p19
```

p20
```
protected long p20
```

p21
```
protected long p21
```

p22
```
protected long p22
```

p23
```
protected long p23
```

p24
```
protected long p24
```

p25
```
protected long p25
```

p26
```
protected long p26
```

p27
```
protected long p27
```

p28
```
protected long p28
```

p29
```
protected long p29
```

p30
```
protected long p30
```

tail

protected volatile io.zeebe.util.sched.ActorTaskQueueNode tail

HEAD_OFFSET

protected static final long HEAD_OFFSET

TAIL_OFFSET

protected static final long TAIL_OFFSET

PREV_OFFSET

protected static final long PREV_OFFSET

NEXT_OFFSET

protected static final long NEXT_OFFSET

STATE_COUNT_OFFSET

protected static final long STATE_COUNT_OFFSET

p1
```
protected long p1
```

p2
```
protected long p2
```

p3
```
protected long p3
```

p4
```
protected long p4
```

p5
```
protected long p5
```

p6
```
protected long p6
```

p7
```
protected long p7
```

p8
```
protected long p8
```

p9
```
protected long p9
```

p10
```
protected long p10
```

p11
```
protected long p11
```

p12
```
protected long p12
```

p13
```
protected long p13
```

p14
```
protected long p14
```

p15
```
protected long p15
```

Constructor Detail
- ActorTaskQueue
```
public ActorTaskQueue()
```

Method Detail
- append
```
public void append(ActorTask task)
```
  appends a task at the end (tail) of the list
- trySteal
```
public ActorTask trySteal()
```
  Attempts to steal a task from this list. The operation does not actually remove the task. Instead, it modifies the task's state.
  
  Returns:
  
  the actor which was stolen or null in case no actor is available
- pop
```
public ActorTask pop()
```
- peek
```
public io.zeebe.util.sched.ActorTaskQueueNode peek()
```
- isEmpty
```
public boolean isEmpty()
```

Class ActorTaskQueue

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

p31

p32

p33

p34

p35

p36

p37

p38

p39

p40

p41

p42

p43

p44

p45

head

p16

p17

p18

p19

p20

p21

p22

p23

p24

p25

p26

p27

p28

p29

p30

tail

HEAD_OFFSET

TAIL_OFFSET

PREV_OFFSET

NEXT_OFFSET

STATE_COUNT_OFFSET

p1

p2

p3

p4

p5

p6

p7

p8

p9

p10

p11

p12

p13

p14

p15

Constructor Detail

ActorTaskQueue

Method Detail

append

trySteal

pop

peek

isEmpty