vertx-lang-scala-docs_2.12 3.4.1 API < Back
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# Packages

-  package root
  Definition Classes
    root
-  package io
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    root
-  package vertx
  Definition Classes
    io
-  package scala
  Definition Classes
    vertx
-  package core
  Definition Classes
    scala
-  package shareddata
  Definition Classes
    core
- AsyncMap
- Counter
- LocalMap
- Lock
- SharedData

c

io.vertx.scala.core.shareddata

# Counter 

###
Companion object Counter

#### class Counter extends AnyRef

An asynchronous counter that can be used to across the cluster to maintain a consistent count.

Linear Supertypes
AnyRef, Any
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### Instance Constructors

1.  new Counter(_asJava: AnyRef)

### Value Members

1.  final def !=(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
2.  final def ##(): Int
   Definition Classes
     AnyRef → Any
3.  final def ==(arg0: Any): Boolean
   Definition Classes
     AnyRef → Any
4.  def addAndGet(value: Long, resultHandler: Handler[AsyncResult[Long]]): Unit

   Add the value to the counter atomically and return the new count

   Add the value to the counter atomically and return the new count

   value

     the value to add

   resultHandler

     handler which will be passed the value

5.  def addAndGetFuture(value: Long): scala.concurrent.Future[Long]

   Like addAndGet but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

6.  final def asInstanceOf[T0]: T0
   Definition Classes
     Any
7.  def asJava: AnyRef
8.  def clone(): AnyRef
   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... )
9.  def compareAndSet(expected: Long, value: Long, resultHandler: Handler[AsyncResult[Boolean]]): Unit

   Set the counter to the specified value only if the current value is the expectec value.

   Set the counter to the specified value only if the current value is the expectec value. This happens atomically.

   expected

     the expected value

   value

     the new value

   resultHandler

     the handler will be passed true on success

10.  def compareAndSetFuture(expected: Long, value: Long): scala.concurrent.Future[Boolean]

    Like compareAndSet but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

11.  def decrementAndGet(resultHandler: Handler[AsyncResult[Long]]): Unit

    Decrement the counter atomically and return the new count

    Decrement the counter atomically and return the new count

    resultHandler

      handler which will be passed the value

12.  def decrementAndGetFuture(): scala.concurrent.Future[Long]

    Like decrementAndGet but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

13.  final def eq(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
14.  def equals(arg0: Any): Boolean
    Definition Classes
      AnyRef → Any
15.  def finalize(): Unit
    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
16.  def get(resultHandler: Handler[AsyncResult[Long]]): Unit

    Get the current value of the counter

    Get the current value of the counter

    resultHandler

      handler which will be passed the value

17.  def getAndAdd(value: Long, resultHandler: Handler[AsyncResult[Long]]): Unit

    Add the value to the counter atomically and return the value before the add

    Add the value to the counter atomically and return the value before the add

    value

      the value to add

    resultHandler

      handler which will be passed the value

18.  def getAndAddFuture(value: Long): scala.concurrent.Future[Long]

    Like getAndAdd but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

19.  def getAndIncrement(resultHandler: Handler[AsyncResult[Long]]): Unit

    Increment the counter atomically and return the value before the increment.

    Increment the counter atomically and return the value before the increment.

    resultHandler

      handler which will be passed the value

20.  def getAndIncrementFuture(): scala.concurrent.Future[Long]

    Like getAndIncrement but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

21.  final def getClass(): Class[_]
    Definition Classes
      AnyRef → Any
22.  def getFuture(): scala.concurrent.Future[Long]

    Like get but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

23.  def hashCode(): Int
    Definition Classes
      AnyRef → Any
24.  def incrementAndGet(resultHandler: Handler[AsyncResult[Long]]): Unit

    Increment the counter atomically and return the new count

    Increment the counter atomically and return the new count

    resultHandler

      handler which will be passed the value

25.  def incrementAndGetFuture(): scala.concurrent.Future[Long]

    Like incrementAndGet but returns a scala.concurrent.Future instead of taking an AsyncResultHandler.

26.  final def isInstanceOf[T0]: Boolean
    Definition Classes
      Any
27.  final def ne(arg0: AnyRef): Boolean
    Definition Classes
      AnyRef
28.  final def notify(): Unit
    Definition Classes
      AnyRef
29.  final def notifyAll(): Unit
    Definition Classes
      AnyRef
30.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
31.  def toString(): String
    Definition Classes
      AnyRef → Any
32.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
33.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
34.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

### Inherited from AnyRef

### Inherited from Any

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