RCountDownLatchAsync (Redisson 3.16.1 API)乐学网一站式学习平台

All Superinterfaces:

RObjectAsync

All Known Subinterfaces:

RCountDownLatch

All Known Implementing Classes:

RedissonCountDownLatch
```
public interface RCountDownLatchAsync
extends RObjectAsync
```
Async interface of Redis based CountDownLatch It has an advantage over CountDownLatch -- count can be set via trySetCountAsync(long) method.

Author:

Nikita Koksharov

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`RFuture<Void>`	`awaitAsync()`	Waits until counter reach zero.
`RFuture<Boolean>`	`awaitAsync(long waitTime, TimeUnit unit)`	Waits until counter reach zero or up to defined `timeout`.
`RFuture<Void>`	`countDownAsync()`	Decrements the counter of the latch.
`RFuture<Long>`	`getCountAsync()`	Returns value of current count.
`RFuture<Boolean>`	`trySetCountAsync(long count)`	Sets new count value only if previous count already has reached zero or is not set at all.

Methods inherited from interface org.redisson.api.RObjectAsync
addListenerAsync, copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

- Method Detail
  - awaitAsync
```
RFuture<Void> awaitAsync()
```
    Waits until counter reach zero.
    
    Returns:
    
    void
  - awaitAsync
```
RFuture<Boolean> awaitAsync(long waitTime,
                            TimeUnit unit)
```
    Waits until counter reach zero or up to defined timeout.
    
    Parameters:
    
    waitTime - the maximum time to wait
    
    unit - the time unit
    
    Returns:
    
    true if the count reached zero and false if timeout reached before the count reached zero
  - countDownAsync
```
RFuture<Void> countDownAsync()
```
    Decrements the counter of the latch. Notifies all waiting threads when count reaches zero.
    
    Returns:
    
    void
  - getCountAsync
```
RFuture<Long> getCountAsync()
```
    Returns value of current count.
    
    Returns:
    
    the current count
  - trySetCountAsync
```
RFuture<Boolean> trySetCountAsync(long count)
```
    Sets new count value only if previous count already has reached zero or is not set at all.
    
    Parameters:
    
    count - - number of times countDown must be invoked before threads can pass through await
    
    Returns:
    
    true if new count setted false if previous count has not reached zero