OneShotEvent (Jenkins core 2.455 API)

java.lang.Object
- hudson.util.OneShotEvent

```
public final class OneShotEvent
extends Object
```
Concurrency primitive.
A OneShotEvent is like a pandora's box. It starts with the closed (non-signaled) state. Multiple threads can wait for the event to become the signaled state.
Once the event becomes signaled, or the pandora's box is opened, every thread gets through freely, and there's no way to turn it back off.

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors
Constructor Description

OneShotEvent()

OneShotEvent(Object lock)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`block()`	Blocks until the event becomes the signaled state.
`void`	`block(long timeout)`	Blocks until the event becomes the signaled state.
`boolean`	`isSignaled()`	Returns true if a value is offered.
`void`	`signal()`	Non-blocking method that signals this event.

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

- Constructor Detail
  - OneShotEvent
```
public OneShotEvent()
```
  - OneShotEvent
```
public OneShotEvent(Object lock)
```
- Method Detail
  - signal
```
public void signal()
```
    Non-blocking method that signals this event.
  - block
```
public void block()
           throws InterruptedException
```
    Blocks until the event becomes the signaled state.
    This method blocks infinitely until a value is offered.
    
    Throws:
    
    InterruptedException
  - block
```
public void block(long timeout)
           throws InterruptedException
```
    Blocks until the event becomes the signaled state.
    If the specified amount of time elapses, this method returns null even if the value isn't offered.
    
    Throws:
    
    InterruptedException
  - isSignaled
```
public boolean isSignaled()
```
    Returns true if a value is offered.