ForkNumberBucket

java.lang.Object
- org.apache.maven.plugin.surefire.booterclient.ForkNumberBucket

```
public final class ForkNumberBucket
extends java.lang.Object
```
A bucket from which fork numbers can be drawn. Any drawn number needs to be returned to the bucket, in order to keep the range of provided values delivered as small as possible.

Field Summary

Fields
Modifier and Type	Field	Description
`private java.util.concurrent.atomic.AtomicInteger`	`highWaterMark`
`private static ForkNumberBucket`	`INSTANCE`
`private java.util.Queue<java.lang.Integer>`	`qFree`

Constructor Summary

Constructors
Modifier Constructor Description

private ForkNumberBucket()
Non-public constructor

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`drawNumber()`
`private int`	`drawNumberInternal()`
`private int`	`getHighestDrawnNumber()`
`private static ForkNumberBucket`	`getInstance()`
`static void`	`returnNumber(int number)`
`private void`	`returnNumberInternal(int number)`

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

- Field Detail
  - INSTANCE
```
private static final ForkNumberBucket INSTANCE
```
  - qFree
```
private final java.util.Queue<java.lang.Integer> qFree
```
  - highWaterMark
```
private final java.util.concurrent.atomic.AtomicInteger highWaterMark
```
- Constructor Detail
  - ForkNumberBucket
```
private ForkNumberBucket()
```
    Non-public constructor
- Method Detail
  - drawNumber
```
public static int drawNumber()
```
    Returns:
    
    a fork number that is not currently in use. The value must be returned to the bucket using returnNumber(int).
  - returnNumber
```
public static void returnNumber(int number)
```
    Parameters:
    
    number - the number to return to the bucket so that it can be reused.
  - getInstance
```
private static ForkNumberBucket getInstance()
```
    Returns:
    
    a singleton instance
  - drawNumberInternal
```
private int drawNumberInternal()
```
    Returns:
    
    a fork number that is not currently in use. The value must be returned to the bucket using returnNumber(int).
  - getHighestDrawnNumber
```
private int getHighestDrawnNumber()
```
    Returns:
    
    the highest number that has been drawn
  - returnNumberInternal
```
private void returnNumberInternal(int number)
```
    Parameters:
    
    number - the number to return to the bucket so that it can be reused.