AbstractProcedureScheduler (Apache HBase

java.lang.Object
- org.apache.hadoop.hbase.procedure2.AbstractProcedureScheduler

所有已实现的接口:: ProcedureScheduler

直接已知子类:: SimpleProcedureScheduler

@InterfaceAudience.Private
public abstract class AbstractProcedureScheduler
extends Object
implements ProcedureScheduler

构造器概要

构造器
构造器和说明

AbstractProcedureScheduler()

构造器
构造器和说明
`AbstractProcedureScheduler()`

方法概要

所有方法实例方法抽象方法具体方法
限定符和类型	方法和说明
`void`	`addBack(Procedure procedure)` Inserts the specified element at the end of this queue.
`void`	`addBack(Procedure procedure, boolean notify)` Inserts the specified element at the end of this queue.
`void`	`addFront(Iterator<Procedure> procedureIterator)` Inserts all elements in the iterator at the front of this queue.
`void`	`addFront(Procedure procedure)` Inserts the specified element at the front of this queue.
`void`	`addFront(Procedure procedure, boolean notify)` Inserts the specified element at the front of this queue.
`protected abstract Procedure`	`dequeue()` Fetch one Procedure from the queue NOTE: this method is called with the sched lock held.
`protected abstract void`	`enqueue(Procedure procedure, boolean addFront)` Add the procedure to the queue.
`long`	`getNullPollCalls()`
`long`	`getPollCalls()`
`boolean`	`hasRunnables()`
`Procedure`	`poll()` Fetch one Procedure from the queue
`Procedure`	`poll(long nanos)`
`Procedure`	`poll(long timeout, TimeUnit unit)` Fetch one Procedure from the queue
`protected void`	`push(Procedure procedure, boolean addFront, boolean notify)`
`protected abstract boolean`	`queueHasRunnables()` Returns true if there are procedures available to process.
`protected abstract int`	`queueSize()` Returns the number of elements in this queue.
`protected void`	`schedLock()`
`protected void`	`schedUnlock()`
`void`	`signalAll()` In case the class is blocking on poll() waiting for items to be added, this method should awake poll() and poll() should return.
`int`	`size()` Returns the number of elements in this queue.
`void`	`start()` Start the scheduler
`void`	`stop()` Stop the scheduler
`protected void`	`waitProcedure(LockAndQueue lockAndQueue, Procedure proc)`
`protected void`	`wakePollIfNeeded(int waitingCount)`
`protected void`	`wakeProcedure(Procedure procedure)`
`protected int`	`wakeWaitingProcedures(LockAndQueue lockAndQueue)` Wakes up given waiting procedures by pushing them back into scheduler queues.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.hadoop.hbase.procedure2.ProcedureScheduler
clear, completionCleanup, getLockResource, getLocks, yield

- 构造器详细资料
  - AbstractProcedureScheduler
```
public AbstractProcedureScheduler()
```
- 方法详细资料
  - start
```
public void start()
```
    从接口复制的说明: ProcedureScheduler
    
    Start the scheduler
    
    指定者:
    
    start 在接口中 ProcedureScheduler
  - stop
```
public void stop()
```
    从接口复制的说明: ProcedureScheduler
    
    Stop the scheduler
    
    指定者:
    
    stop 在接口中 ProcedureScheduler
  - signalAll
```
public void signalAll()
```
    从接口复制的说明: ProcedureScheduler
    
    In case the class is blocking on poll() waiting for items to be added, this method should awake poll() and poll() should return.
    
    指定者:
    
    signalAll 在接口中 ProcedureScheduler
  - enqueue
```
protected abstract void enqueue(Procedure procedure,
                                boolean addFront)
```
    Add the procedure to the queue. NOTE: this method is called with the sched lock held.
    
    参数:
    
    procedure - the Procedure to add
    
    addFront - true if the item should be added to the front of the queue
  - addFront
```
public void addFront(Procedure procedure)
```
    从接口复制的说明: ProcedureScheduler
    
    Inserts the specified element at the front of this queue.
    
    指定者:
    
    addFront 在接口中 ProcedureScheduler
    
    参数:
    
    procedure - the Procedure to add
  - addFront
```
public void addFront(Procedure procedure,
                     boolean notify)
```
    从接口复制的说明: ProcedureScheduler
    
    Inserts the specified element at the front of this queue.
    
    指定者:
    
    addFront 在接口中 ProcedureScheduler
    
    参数:
    
    procedure - the Procedure to add
    
    notify - whether need to notify worker
  - addFront
```
public void addFront(Iterator<Procedure> procedureIterator)
```
    从接口复制的说明: ProcedureScheduler
    
    Inserts all elements in the iterator at the front of this queue.
    
    指定者:
    
    addFront 在接口中 ProcedureScheduler
  - addBack
```
public void addBack(Procedure procedure)
```
    从接口复制的说明: ProcedureScheduler
    
    Inserts the specified element at the end of this queue.
    
    指定者:
    
    addBack 在接口中 ProcedureScheduler
    
    参数:
    
    procedure - the Procedure to add
  - addBack
```
public void addBack(Procedure procedure,
                    boolean notify)
```
    从接口复制的说明: ProcedureScheduler
    
    Inserts the specified element at the end of this queue.
    
    指定者:
    
    addBack 在接口中 ProcedureScheduler
    
    参数:
    
    procedure - the Procedure to add
    
    notify - whether need to notify worker
  - push
```
protected void push(Procedure procedure,
                    boolean addFront,
                    boolean notify)
```
  - dequeue
```
protected abstract Procedure dequeue()
```
    Fetch one Procedure from the queue NOTE: this method is called with the sched lock held.
    
    返回:
    
    the Procedure to execute, or null if nothing is available.
  - poll
```
public Procedure poll()
```
    从接口复制的说明: ProcedureScheduler
    
    Fetch one Procedure from the queue
    
    指定者:
    
    poll 在接口中 ProcedureScheduler
    
    返回:
    
    the Procedure to execute, or null if nothing present.
  - poll
```
public Procedure poll(long timeout,
                      TimeUnit unit)
```
    从接口复制的说明: ProcedureScheduler
    
    Fetch one Procedure from the queue
    
    指定者:
    
    poll 在接口中 ProcedureScheduler
    
    参数:
    
    timeout - how long to wait before giving up, in units of unit
    
    unit - a TimeUnit determining how to interpret the timeout parameter
    
    返回:
    
    the Procedure to execute, or null if nothing present.
  - poll
```
public Procedure poll(long nanos)
```
  - queueSize
```
protected abstract int queueSize()
```
    Returns the number of elements in this queue. NOTE: this method is called with the sched lock held.
    
    返回:
    
    the number of elements in this queue.
  - queueHasRunnables
```
protected abstract boolean queueHasRunnables()
```
    Returns true if there are procedures available to process. NOTE: this method is called with the sched lock held.
    
    返回:
    
    true if there are procedures available to process, otherwise false.
  - size
```
public int size()
```
    从接口复制的说明: ProcedureScheduler
    
    Returns the number of elements in this queue.
    
    指定者:
    
    size 在接口中 ProcedureScheduler
    
    返回:
    
    the number of elements in this queue.
  - hasRunnables
```
public boolean hasRunnables()
```
    指定者:
    
    hasRunnables 在接口中 ProcedureScheduler
    
    返回:
    
    true if there are procedures available to process, otherwise false.
  - getPollCalls
```
public long getPollCalls()
```
  - getNullPollCalls
```
public long getNullPollCalls()
```
  - wakeWaitingProcedures
```
protected int wakeWaitingProcedures(LockAndQueue lockAndQueue)
```
    Wakes up given waiting procedures by pushing them back into scheduler queues.
    
    返回:
    
    size of given waitQueue.
  - waitProcedure
```
protected void waitProcedure(LockAndQueue lockAndQueue,
                             Procedure proc)
```
  - wakeProcedure
```
protected void wakeProcedure(Procedure procedure)
```
  - schedLock
```
protected void schedLock()
```
  - schedUnlock
```
protected void schedUnlock()
```
  - wakePollIfNeeded
```
protected void wakePollIfNeeded(int waitingCount)
```

类 AbstractProcedureScheduler

构造器概要

方法概要

从类继承的方法 java.lang.Object

从接口继承的方法 org.apache.hadoop.hbase.procedure2.ProcedureScheduler

构造器详细资料

AbstractProcedureScheduler

方法详细资料

start

stop

signalAll

enqueue

addFront

addFront

addFront

addBack

addBack

push

dequeue

poll

poll

poll

queueSize

queueHasRunnables

size

hasRunnables

getPollCalls

getNullPollCalls

wakeWaitingProcedures

waitProcedure

wakeProcedure

schedLock

schedUnlock

wakePollIfNeeded