Interface Scheduler
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- All Known Implementing Classes:
AbstractScheduler
,AbstractSchedulerBase
,ExplicitlyTriggeredScheduler
,LightArrayRevolverScheduler
public interface Scheduler
An Apache Pekko scheduler service.For scheduling within actors
with Timers
should be preferred.Please note that this scheduler implementation is highly optimised for high-throughput and high-frequency events. It is not to be confused with long-term schedulers such as Quartz. The scheduler will throw an exception if attempts are made to schedule too far into the future (which by default is around 8 months (
Int.MaxValue
seconds).It's possible to implement a custom
Scheduler
, although that should rarely be needed.A
Scheduler
implementation needs one special behavior: if Closeable, it MUST execute all outstanding tasks that implementScheduler.TaskRunOnClose
upon .close() in order to properly shutdown all dispatchers.Furthermore, this timer service MUST throw IllegalStateException if it cannot schedule a task. Once scheduled, the task MUST be executed. If executed upon close(), the task may execute before its timeout.
Scheduler implementation are loaded reflectively at ActorSystem start-up with the following constructor arguments: 1) the system’s com.typesafe.config.Config (from system.settings.config) 2) a org.apache.pekko.event.LoggingAdapter 3) a java.util.concurrent.ThreadFactory
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static class
Scheduler.AtomicCancellable
INTERNAL APIstatic interface
Scheduler.TaskRunOnClose
If aTaskRunOnClose
is used inscheduleOnce
it will be run when theScheduler
is closed (ActorSystem
shutdown).
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Method Summary
All Methods Instance Methods Abstract Methods Deprecated Methods Modifier and Type Method Description double
maxFrequency()
The maximum supported task frequency of this scheduler, i.e.Cancellable
schedule(java.time.Duration initialDelay, java.time.Duration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead.Cancellable
schedule(java.time.Duration initialDelay, java.time.Duration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead.Cancellable
schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead.Cancellable
schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead.Cancellable
schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, scala.Function0<scala.runtime.BoxedUnit> f, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead.ActorRef
schedule$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message)
Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.Cancellable
scheduleAtFixedRate(java.time.Duration initialDelay, java.time.Duration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules aRunnable
to be run repeatedly with an initial delay and a frequency.Cancellable
scheduleAtFixedRate(java.time.Duration initialDelay, java.time.Duration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent repeatedly with an initial delay and frequency.Cancellable
scheduleAtFixedRate(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules aRunnable
to be run repeatedly with an initial delay and a frequency.Cancellable
scheduleAtFixedRate(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent repeatedly with an initial delay and frequency.ActorRef
scheduleAtFixedRate$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message)
Scala API: Schedules a message to be sent repeatedly with an initial delay and frequency.Cancellable
scheduleOnce(java.time.Duration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules a Runnable to be run once with a delay, i.e.Cancellable
scheduleOnce(java.time.Duration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent once with a delay, i.e.Cancellable
scheduleOnce(scala.concurrent.duration.FiniteDuration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules a Runnable to be run once with a delay, i.e.Cancellable
scheduleOnce(scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent once with a delay, i.e.Cancellable
scheduleOnce(scala.concurrent.duration.FiniteDuration delay, scala.Function0<scala.runtime.BoxedUnit> f, scala.concurrent.ExecutionContext executor)
Scala API: Schedules a function to be run once with a delay, i.e.ActorRef
scheduleOnce$default$5(scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message)
Cancellable
scheduleWithFixedDelay(java.time.Duration initialDelay, java.time.Duration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules aRunnable
to be run repeatedly with an initial delay and a fixeddelay
between subsequent executions.Cancellable
scheduleWithFixedDelay(java.time.Duration initialDelay, java.time.Duration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent repeatedly with an initial delay and a fixeddelay
between messages.Cancellable
scheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules aRunnable
to be run repeatedly with an initial delay and a fixeddelay
between subsequent executions.Cancellable
scheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent repeatedly with an initial delay and a fixeddelay
between messages.ActorRef
scheduleWithFixedDelay$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message)
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Method Detail
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scheduleWithFixedDelay
Cancellable scheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules aRunnable
to be run repeatedly with an initial delay and a fixeddelay
between subsequent executions. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would setdelay=Duration(2, TimeUnit.SECONDS)
andinterval=Duration(100, TimeUnit.MILLISECONDS)
.It will not compensate the delay between tasks if the execution takes a long time or if scheduling is delayed longer than specified for some reason. The delay between subsequent execution will always be (at least) the given
delay
. In the long run, the frequency of execution will generally be slightly lower than the reciprocal of the specifieddelay
.If the
Runnable
throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
with Timers
should be preferred.
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scheduleWithFixedDelay
Cancellable scheduleWithFixedDelay(java.time.Duration initialDelay, java.time.Duration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules aRunnable
to be run repeatedly with an initial delay and a fixeddelay
between subsequent executions. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay toDuration.ofSeconds(2)
, and interval toDuration.ofMillis(100)
.It will not compensate the delay between tasks if the execution takes a long time or if scheduling is delayed longer than specified for some reason. The delay between subsequent execution will always be (at least) the given
delay
.In the long run, the frequency of tasks will generally be slightly lower than the reciprocal of the specified
delay
.If the
Runnable
throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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scheduleWithFixedDelay
Cancellable scheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent repeatedly with an initial delay and a fixeddelay
between messages. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would setdelay=Duration.Zero
andinterval=Duration(500, TimeUnit.MILLISECONDS)
.It will not compensate the delay between messages if scheduling is delayed longer than specified for some reason. The delay between sending of subsequent messages will always be (at least) the given
delay
.In the long run, the frequency of messages will generally be slightly lower than the reciprocal of the specified
delay
.Note: For scheduling within actors
with Timers
should be preferred.
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scheduleWithFixedDelay
Cancellable scheduleWithFixedDelay(java.time.Duration initialDelay, java.time.Duration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent repeatedly with an initial delay and a fixeddelay
between messages. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would setdelay=Duration.ZERO
andinterval=Duration.ofMillis(500)
.It will not compensate the delay between messages if scheduling is delayed longer than specified for some reason. The delay between sending of subsequent messages will always be (at least) the given
delay
.In the long run, the frequency of messages will generally be slightly lower than the reciprocal of the specified
delay
.Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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scheduleAtFixedRate
Cancellable scheduleAtFixedRate(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules aRunnable
to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would setdelay=Duration(2, TimeUnit.SECONDS)
andinterval=Duration(100, TimeUnit.MILLISECONDS)
.It will compensate the delay for a subsequent task if the previous tasks took too long to execute. In such cases, the actual execution interval will differ from the interval passed to the method.
If the execution of the tasks takes longer than the
interval
, the subsequent execution will start immediately after the prior one completes (there will be no overlap of executions). This also has the consequence that after long garbage collection pauses or other reasons when the JVM was suspended all "missed" tasks will execute when the process wakes up again.In the long run, the frequency of execution will be exactly the reciprocal of the specified
interval
.Warning:
scheduleAtFixedRate
can result in bursts of scheduled tasks after long garbage collection pauses, which may in worst case cause undesired load on the system. ThereforescheduleWithFixedDelay
is often preferred.If the
Runnable
throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
with Timers
should be preferred.
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scheduleAtFixedRate
Cancellable scheduleAtFixedRate(java.time.Duration initialDelay, java.time.Duration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules aRunnable
to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay toDuration.ofSeconds(2)
, and interval toDuration.ofMillis(100)
.It will compensate the delay for a subsequent task if the previous tasks took too long to execute. In such cases, the actual execution interval will differ from the interval passed to the method.
If the execution of the tasks takes longer than the
interval
, the subsequent execution will start immediately after the prior one completes (there will be no overlap of executions). This also has the consequence that after long garbage collection pauses or other reasons when the JVM was suspended all "missed" tasks will execute when the process wakes up again.In the long run, the frequency of execution will be exactly the reciprocal of the specified
interval
.Warning:
scheduleAtFixedRate
can result in bursts of scheduled tasks after long garbage collection pauses, which may in worst case cause undesired load on the system. ThereforescheduleWithFixedDelay
is often preferred.If the
Runnable
throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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scheduleAtFixedRate
Cancellable scheduleAtFixedRate(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent repeatedly with an initial delay and frequency. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would setdelay=Duration.Zero
andinterval=Duration(500, TimeUnit.MILLISECONDS)
It will compensate the delay for a subsequent message if the sending of previous message was delayed more than specified. In such cases, the actual message interval will differ from the interval passed to the method.
If the execution is delayed longer than the
interval
, the subsequent message will be sent immediately after the prior one. This also has the consequence that after long garbage collection pauses or other reasons when the JVM was suspended all "missed" messages will be sent when the process wakes up again.In the long run, the frequency of messages will be exactly the reciprocal of the specified
interval
.Warning:
scheduleAtFixedRate
can result in bursts of scheduled messages after long garbage collection pauses, which may in worst case cause undesired load on the system. ThereforescheduleWithFixedDelay
is often preferred.Note: For scheduling within actors
with Timers
should be preferred.
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scheduleAtFixedRate
Cancellable scheduleAtFixedRate(java.time.Duration initialDelay, java.time.Duration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent repeatedly with an initial delay and frequency. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would setdelay=Duration.ZERO
andinterval=Duration.ofMillis(500)
It will compensate the delay for a subsequent message if the sending of previous message was delayed more than specified. In such cases, the actual message interval will differ from the interval passed to the method.
If the execution is delayed longer than the
interval
, the subsequent message will be sent immediately after the prior one. This also has the consequence that after long garbage collection pauses or other reasons when the JVM was suspended all "missed" messages will be sent when the process wakes up again.In the long run, the frequency of messages will be exactly the reciprocal of the specified
interval
.Warning:
scheduleAtFixedRate
can result in bursts of scheduled messages after long garbage collection pauses, which may in worst case cause undesired load on the system. ThereforescheduleWithFixedDelay
is often preferred.Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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schedule
Cancellable schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead. This has the same semantics as scheduleAtFixedRate, but scheduleWithFixedDelay is often preferred. Since Akka 2.6.0.Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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schedule
Cancellable schedule(java.time.Duration initialDelay, java.time.Duration interval, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead. This has the same semantics as scheduleAtFixedRate, but scheduleWithFixedDelay is often preferred. Since Akka 2.6.0.Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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schedule
Cancellable schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, scala.Function0<scala.runtime.BoxedUnit> f, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead. This has the same semantics as scheduleAtFixedRate, but scheduleWithFixedDelay is often preferred. Since Akka 2.6.0.Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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schedule
Cancellable schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead. This has the same semantics as scheduleAtFixedRate, but scheduleWithFixedDelay is often preferred. Since Akka 2.6.0.Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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schedule
Cancellable schedule(java.time.Duration initialDelay, java.time.Duration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Deprecated.Use scheduleWithFixedDelay or scheduleAtFixedRate instead. This has the same semantics as scheduleAtFixedRate, but scheduleWithFixedDelay is often preferred. Since Akka 2.6.0.Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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scheduleWithFixedDelay$default$6
ActorRef scheduleWithFixedDelay$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message)
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scheduleAtFixedRate$default$6
ActorRef scheduleAtFixedRate$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message)
Scala API: Schedules a message to be sent repeatedly with an initial delay and frequency. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would setdelay=Duration.Zero
andinterval=Duration(500, TimeUnit.MILLISECONDS)
It will compensate the delay for a subsequent message if the sending of previous message was delayed more than specified. In such cases, the actual message interval will differ from the interval passed to the method.
If the execution is delayed longer than the
interval
, the subsequent message will be sent immediately after the prior one. This also has the consequence that after long garbage collection pauses or other reasons when the JVM was suspended all "missed" messages will be sent when the process wakes up again.In the long run, the frequency of messages will be exactly the reciprocal of the specified
interval
.Warning:
scheduleAtFixedRate
can result in bursts of scheduled messages after long garbage collection pauses, which may in worst case cause undesired load on the system. ThereforescheduleWithFixedDelay
is often preferred.Note: For scheduling within actors
with Timers
should be preferred.
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schedule$default$6
ActorRef schedule$default$6(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, ActorRef receiver, java.lang.Object message)
Deprecated API: SeescheduleWithFixedDelay(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
orscheduleAtFixedRate(scala.concurrent.duration.FiniteDuration, scala.concurrent.duration.FiniteDuration, java.lang.Runnable, scala.concurrent.ExecutionContext)
.
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scheduleOnce
Cancellable scheduleOnce(scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Scala API: Schedules a message to be sent once with a delay, i.e. a time period that has to pass before the message is sent.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
with Timers
should be preferred.
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scheduleOnce
Cancellable scheduleOnce(java.time.Duration delay, ActorRef receiver, java.lang.Object message, scala.concurrent.ExecutionContext executor, ActorRef sender)
Java API: Schedules a message to be sent once with a delay, i.e. a time period that has to pass before the message is sent.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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scheduleOnce
Cancellable scheduleOnce(scala.concurrent.duration.FiniteDuration delay, scala.Function0<scala.runtime.BoxedUnit> f, scala.concurrent.ExecutionContext executor)
Scala API: Schedules a function to be run once with a delay, i.e. a time period that has to pass before the function is run.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
with Timers
should be preferred.
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scheduleOnce
Cancellable scheduleOnce(scala.concurrent.duration.FiniteDuration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Scala API: Schedules a Runnable to be run once with a delay, i.e. a time period that has to pass before the runnable is executed.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
with Timers
should be preferred.
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scheduleOnce
Cancellable scheduleOnce(java.time.Duration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor)
Java API: Schedules a Runnable to be run once with a delay, i.e. a time period that has to pass before the runnable is executed.- Throws:
java.lang.IllegalArgumentException
- if the given delays is zero, negative or exceed the maximum reach (calculated as:delay / tickNanos > Int.MaxValue
).Note: For scheduling within actors
AbstractActorWithTimers
should be preferred.
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scheduleOnce$default$5
ActorRef scheduleOnce$default$5(scala.concurrent.duration.FiniteDuration delay, ActorRef receiver, java.lang.Object message)
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maxFrequency
double maxFrequency()
The maximum supported task frequency of this scheduler, i.e. the inverse of the minimum time interval between executions of a recurring task, in Hz.
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