ProcedureSimpleRunQueue (Apache HBase 1.2.12 API)

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

All Implemented Interfaces:: ProcedureRunnableSet

@InterfaceAudience.Private
@InterfaceStability.Evolving
public class ProcedureSimpleRunQueue
extends Object
implements ProcedureRunnableSet

Simple runqueue for the procedures

Field Summary

Fields
Modifier and Type Field and Description

private ReentrantLock lock

private Deque<Procedure> runnables

private Condition waitCond

Fields
Modifier and Type	Field and Description
`private ReentrantLock`	`lock`
`private Deque<Procedure>`	`runnables`
`private Condition`	`waitCond`

Constructor Summary

Constructors
Constructor and Description

ProcedureSimpleRunQueue()

Constructors
Constructor and Description
`ProcedureSimpleRunQueue()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addBack(Procedure proc)` Inserts the specified element at the end of this queue.
`void`	`addFront(Procedure proc)` Inserts the specified element at the front of this queue.
`void`	`clear()` Removes all of the elements from this collection.
`void`	`completionCleanup(Procedure proc)` The procedure in execution completed.
`Procedure`	`poll()` Fetch one Procedure from the queue
`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 collection.
`void`	`yield(Procedure proc)` The procedure can't run at the moment.

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

- Field Detail
  - runnables
```
private final Deque<Procedure> runnables
```
  - lock
```
private final ReentrantLock lock
```
  - waitCond
```
private final Condition waitCond
```
- Constructor Detail
  - ProcedureSimpleRunQueue
```
public ProcedureSimpleRunQueue()
```
- Method Detail
  - addFront
```
public void addFront(Procedure proc)
```
    Description copied from interface: ProcedureRunnableSet
    
    Inserts the specified element at the front of this queue.
    
    Specified by:
    
    addFront in interface ProcedureRunnableSet
    
    Parameters:
    proc - the Procedure to add
  - addBack
```
public void addBack(Procedure proc)
```
    Description copied from interface: ProcedureRunnableSet
    
    Inserts the specified element at the end of this queue.
    
    Specified by:
    
    addBack in interface ProcedureRunnableSet
    
    Parameters:
    proc - the Procedure to add
  - yield
```
public void yield(Procedure proc)
```
    Description copied from interface: ProcedureRunnableSet
    
    The procedure can't run at the moment. add it back to the queue, giving priority to someone else.
    
    Specified by:
    
    yield in interface ProcedureRunnableSet
    
    Parameters:
    proc - the Procedure to add back to the list
  - poll
```
public Procedure poll()
```
    Description copied from interface: ProcedureRunnableSet
    
    Fetch one Procedure from the queue
    
    Specified by:
    
    poll in interface ProcedureRunnableSet
    
    Returns:
    the Procedure to execute, or null if nothing present.
  - signalAll
```
public void signalAll()
```
    Description copied from interface: ProcedureRunnableSet
    
    In case the class is blocking on poll() waiting for items to be added, this method should awake poll() and poll() should return.
    
    Specified by:
    
    signalAll in interface ProcedureRunnableSet
  - clear
```
public void clear()
```
    Description copied from interface: ProcedureRunnableSet
    
    Removes all of the elements from this collection.
    
    Specified by:
    
    clear in interface ProcedureRunnableSet
  - size
```
public int size()
```
    Description copied from interface: ProcedureRunnableSet
    
    Returns the number of elements in this collection.
    
    Specified by:
    
    size in interface ProcedureRunnableSet
    
    Returns:
    the number of elements in this collection.
  - completionCleanup
```
public void completionCleanup(Procedure proc)
```
    Description copied from interface: ProcedureRunnableSet
    
    The procedure in execution completed. This can be implemented to perform cleanups.
    
    Specified by:
    
    completionCleanup in interface ProcedureRunnableSet
    
    Parameters:
    proc - the Procedure that completed the execution.

Class ProcedureSimpleRunQueue

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

runnables

lock

waitCond

Constructor Detail

ProcedureSimpleRunQueue

Method Detail

addFront

addBack

yield

poll

signalAll

clear

size

completionCleanup