DispatcherThread (kontraktor 4.22 API)

java.lang.Object
- java.lang.Thread
- - org.nustaq.kontraktor.impl.DispatcherThread

All Implemented Interfaces:

Runnable, Monitorable
```
public class DispatcherThread
extends Thread
implements Monitorable
```
Implements the default dispatcher/scheduling of actors. For each actor created from "outside" (not from within another actor). A new DispatcherThread is created automatically. An actor created from within another actor inherits the dispatcher of the enclosing actor by default. Calls from actors sharing the same dispatcher are done directly (no queueing). Calls across actors in different dispatchers are put to the Channel of the receiving dispatcher. Note that cross-dispatcher calls are like 1000 times slower than inbound calls. Each dispatcher owns exactly one single thread. Note that dispatchers must be terminated if not needed any longer, as a thread is associated with them. For more sophisticated applications it might be appropriate to manually set up dispatchers (Actors.assignDispatcher()). The Actors.Channel method allows to specifiy a dedicated dispatcher on which to run the actor. This way it is possible to exactly balance and control the number of threads created and which thread operates a set of actors.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class DispatcherThread.DispatcherReport
- Nested classes/interfaces inherited from class java.lang.Thread
  Thread.State, Thread.UncaughtExceptionHandler

Nested Classes
Modifier and Type	Class and Description
`static class`	`DispatcherThread.DispatcherReport`

Field Summary

Fields
Modifier and Type	Field and Description
`ArrayList`	`__stack`
`static AtomicInteger`	`activeDispatchers`
`protected boolean`	`autoShutDown`
`static boolean`	`DUMP_CATCHED`
`static int`	`MILLIS_AFTER_CREATION_BEFORE_REBALANCING`
`static int`	`POLL_ALL_Q`
`static int`	`POLL_CB_Q`
`static int`	`QUEUE_PERCENTAGE_TRIGGERING_REBALANCE`
`static int`	`SCHEDULE_TICK_NANOS`
`protected boolean`	`shutDown`

Fields inherited from class java.lang.Thread
MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors
Constructor and Description

DispatcherThread(Scheduler scheduler)

DispatcherThread(Scheduler scheduler, boolean autoShutDown)

Constructors
Constructor and Description
`DispatcherThread(Scheduler scheduler)`
`DispatcherThread(Scheduler scheduler, boolean autoShutDown)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addActor(Actor act)`
`int`	`getAccumulatedQSizes()` accumulated queue sizes of all actors
`Actor[]`	`getActors()`
`int`	`getLoad()` WARNING: call rarely, this method might have O(n) runtime with default unbounded queues.
`int`	`getQSize()`
`IPromise`	`getReport()`
`Scheduler`	`getScheduler()`
`IPromise<Monitorable[]>`	`getSubMonitorables()`
`boolean`	`isAutoShutDown()`
`boolean`	`isEmpty()`
`boolean`	`isIsolated()`
`boolean`	`isShutDown()`
`boolean`	`pollQs()`
`boolean`	`pollQs(Actor[] actors, int queues)`
`boolean`	`pollQs(int queues)`
`protected CallEntry`	`pollQueues(Actor[] actors, int queues)`
`void`	`run()`
`void`	`schedulePendingAdds()` add actors which have been marked to be scheduled on this
`boolean`	`schedules(Object receiverRef)` can be called from the dispacther thread itself only
`void`	`setAutoShutDown(boolean autoShutDown)`
`void`	`setIsolated(boolean isIsolated)`
`void`	`shutDown()` terminate operation after emptying Q
`void`	`shutDownImmediate()` terminate operation immediately.
`String`	`toString()`
`void`	`waitEmpty(long nanos)` blocking method, use for debugging only.

Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, yield

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

Field Detail

DUMP_CATCHED
```
public static boolean DUMP_CATCHED
```

SCHEDULE_TICK_NANOS
```
public static int SCHEDULE_TICK_NANOS
```

QUEUE_PERCENTAGE_TRIGGERING_REBALANCE

public static int QUEUE_PERCENTAGE_TRIGGERING_REBALANCE

MILLIS_AFTER_CREATION_BEFORE_REBALANCING

public static int MILLIS_AFTER_CREATION_BEFORE_REBALANCING

activeDispatchers

public static AtomicInteger activeDispatchers

POLL_ALL_Q
```
public static final int POLL_ALL_Q
```
See Also:

Constant Field Values

POLL_CB_Q
```
public static final int POLL_CB_Q
```
See Also:

Constant Field Values

shutDown
```
protected boolean shutDown
```

__stack
```
public ArrayList __stack
```

autoShutDown

protected volatile boolean autoShutDown

Constructor Detail

DispatcherThread

public DispatcherThread(Scheduler scheduler)

DispatcherThread

public DispatcherThread(Scheduler scheduler,
                        boolean autoShutDown)

Method Detail
- toString
```
public String toString()
```
  Overrides:
  
  toString in class Thread
- isIsolated
```
public boolean isIsolated()
```
- setIsolated
```
public void setIsolated(boolean isIsolated)
```
- addActor
```
public void addActor(Actor act)
```
- isAutoShutDown
```
public boolean isAutoShutDown()
```
- setAutoShutDown
```
public void setAutoShutDown(boolean autoShutDown)
```
- run
```
public void run()
```
  Specified by:
  
  run in interface Runnable
  
  Overrides:
  
  run in class Thread
- schedulePendingAdds
```
public void schedulePendingAdds()
```
  add actors which have been marked to be scheduled on this
- pollQueues
```
protected CallEntry pollQueues(Actor[] actors,
                               int queues)
```
- pollQs
```
public boolean pollQs()
```
  Returns:
  
  false if no message could be polled
- pollQs
```
public boolean pollQs(int queues)
```
- pollQs
```
public boolean pollQs(Actor[] actors,
                      int queues)
```
  Parameters:
  
  queues - - see constants
  
  Returns:
  
  false if no message could be polled
- getLoad
```
public int getLoad()
```
  WARNING: call rarely, this method might have O(n) runtime with default unbounded queues.
  
  Returns:
  
  percentage of queue fill of max actor
- getAccumulatedQSizes
```
public int getAccumulatedQSizes()
```
  accumulated queue sizes of all actors
  
  Returns:
- getQSize
```
public int getQSize()
```
  Returns:
  
  accumulated q size of all dispatched actors
- isShutDown
```
public boolean isShutDown()
```
  Returns:
  
  true if DispatcherThread is shut down
- shutDown
```
public void shutDown()
```
  terminate operation after emptying Q
- shutDownImmediate
```
public void shutDownImmediate()
```
  terminate operation immediately. Pending messages in Q are lost
- isEmpty
```
public boolean isEmpty()
```
- waitEmpty
```
public void waitEmpty(long nanos)
```
  blocking method, use for debugging only.
- getScheduler
```
public Scheduler getScheduler()
```
- getActors
```
public Actor[] getActors()
```
  Returns:
  
  a copy of actors used
- schedules
```
public boolean schedules(Object receiverRef)
```
  can be called from the dispacther thread itself only
  
  Parameters:
  
  receiverRef -
  
  Returns:
- getReport
```
public IPromise getReport()
```
  Specified by:
  
  getReport in interface Monitorable
- getSubMonitorables
```
public IPromise<Monitorable[]> getSubMonitorables()
```
  Specified by:
  
  getSubMonitorables in interface Monitorable

Class DispatcherThread

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Field Summary

Fields inherited from class java.lang.Thread

Constructor Summary

Method Summary

Methods inherited from class java.lang.Thread

Methods inherited from class java.lang.Object

Field Detail

DUMP_CATCHED

SCHEDULE_TICK_NANOS

QUEUE_PERCENTAGE_TRIGGERING_REBALANCE

MILLIS_AFTER_CREATION_BEFORE_REBALANCING

activeDispatchers

POLL_ALL_Q

POLL_CB_Q

shutDown

__stack

autoShutDown

Constructor Detail

DispatcherThread

DispatcherThread

Method Detail

toString

isIsolated

setIsolated

addActor

isAutoShutDown

setAutoShutDown

run

schedulePendingAdds

pollQueues

pollQs

pollQs

pollQs

getLoad

getAccumulatedQSizes

getQSize

isShutDown

shutDown

shutDownImmediate

isEmpty

waitEmpty

getScheduler

getActors

schedules

getReport

getSubMonitorables