Timer (Apache Dubbo 2.7.11 API)

所有已知实现类:

HashedWheelTimer
```
public interface Timer
```
Schedules TimerTasks for one-time future execution in a background thread.

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`boolean`	`isStop()`	the timer is stop
`Timeout`	`newTimeout(TimerTask task, long delay, TimeUnit unit)`	Schedules the specified `TimerTask` for one-time execution after the specified delay.
`Set<Timeout>`	`stop()`	Releases all resources acquired by this `Timer` and cancels all tasks which were scheduled but not executed yet.

- 方法详细资料
  - newTimeout
```
Timeout newTimeout(TimerTask task,
                   long delay,
                   TimeUnit unit)
```
    Schedules the specified TimerTask for one-time execution after the specified delay.
    
    返回:
    
    a handle which is associated with the specified task
    
    抛出:
    
    IllegalStateException - if this timer has been stopped already
    
    RejectedExecutionException - if the pending timeouts are too many and creating new timeout can cause instability in the system.
  - stop
```
Set<Timeout> stop()
```
    Releases all resources acquired by this Timer and cancels all tasks which were scheduled but not executed yet.
    
    返回:
    
    the handles associated with the tasks which were canceled by this method
  - isStop
```
boolean isStop()
```
    the timer is stop
    
    返回:
    
    true for stop