| Package | Description | 
|---|---|
| java.util.concurrent | 
 Utility classes commonly useful in concurrent programming. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
Phaser | 
Phaser.getParent()
Returns the parent of this phaser, or  
null if none. | 
Phaser | 
Phaser.getRoot()
Returns the root ancestor of this phaser, which is the same as
 this phaser if it has no parent. 
 | 
| Constructor and Description | 
|---|
Phaser(Phaser parent)
Equivalent to  
Phaser(parent, 0). | 
Phaser(Phaser parent,
      int parties)
Creates a new phaser with the given parent and number of
 registered unarrived parties. 
 | 
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