Package com.linkedin.alpini.base.concurrency

Interface ScheduledExecutorService

All Superinterfaces:

Executor, ExecutorService, ExecutorService, ScheduledExecutorService

All Known Subinterfaces:

ShutdownableScheduledExecutorService

All Known Implementing Classes:

ShutdownableScheduledExecutorServiceImpl, TimeScheduledThreadPoolExecutor

public interface ScheduledExecutorService
extends ScheduledExecutorService, ExecutorService

An analog to ScheduledExecutorService which extends ExecutorService.

Method Summary

Modifier and Type	Method	Description
ScheduledFuture<?>	schedule(Runnable command, long delay, TimeUnit unit)	Creates and executes a one-shot action that becomes enabled after the given delay.
<V> ScheduledFuture<V>	schedule(Callable<V> callable, long delay, TimeUnit unit)	Creates and executes a ScheduledFuture that becomes enabled after the given delay.
ScheduledFuture<?>	scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit)	Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is executions will commence after initialDelay then initialDelay+period, then initialDelay + 2 * period, and so on.
ScheduledFuture<?>	scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit)	Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given delay between the termination of one execution and the commencement of the next.

Methods inherited from interface java.util.concurrent.Executor

execute

Methods inherited from interface com.linkedin.alpini.base.concurrency.ExecutorService

submit, submit, submit

Methods inherited from interface java.util.concurrent.ExecutorService

awaitTermination, invokeAll, invokeAll, invokeAny, invokeAny, isShutdown, isTerminated, shutdown, shutdownNow

Method Details

schedule

@Nonnull
ScheduledFuture<?> schedule(@Nonnull
 Runnable command,
 long delay,
 @Nonnull
 TimeUnit unit)

Creates and executes a one-shot action that becomes enabled after the given delay.

Specified by:

schedule in interface ScheduledExecutorService

Parameters:

command - the task to execute

delay - the time from now to delay execution

unit - the time unit of the delay parameter

Returns:

a ScheduledFuture representing pending completion of the task and whose get() method will return null upon completion

Throws:

RejectedExecutionException - if the task cannot be scheduled for execution

NullPointerException - if command is null

schedule

@Nonnull
<V> ScheduledFuture<V> schedule(@Nonnull
 Callable<V> callable,
 long delay,
 @Nonnull
 TimeUnit unit)

Creates and executes a ScheduledFuture that becomes enabled after the given delay.

Specified by:

schedule in interface ScheduledExecutorService

Type Parameters:

V - the type of the callable's result

Parameters:

callable - the function to execute

delay - the time from now to delay execution

unit - the time unit of the delay parameter

Returns:

a ScheduledFuture that can be used to extract result or cancel

Throws:

RejectedExecutionException - if the task cannot be scheduled for execution

NullPointerException - if callable is null

scheduleAtFixedRate

@Nonnull
ScheduledFuture<?> scheduleAtFixedRate(@Nonnull
 Runnable command,
 long initialDelay,
 long period,
 @Nonnull
 TimeUnit unit)

Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is executions will commence after initialDelay then initialDelay+period, then initialDelay + 2 * period, and so on. If any execution of the task encounters an exception, subsequent executions are suppressed. Otherwise, the task will only terminate via cancellation or termination of the executor. If any execution of this task takes longer than its period, then subsequent executions may start late, but will not concurrently execute.

Specified by:

scheduleAtFixedRate in interface ScheduledExecutorService

Parameters:

command - the task to execute

initialDelay - the time to delay first execution

period - the period between successive executions

unit - the time unit of the initialDelay and period parameters

Returns:

a ScheduledFuture representing pending completion of the task, and whose get() method will throw an exception upon cancellation

Throws:

RejectedExecutionException - if the task cannot be scheduled for execution

NullPointerException - if command is null

IllegalArgumentException - if period less than or equal to zero

scheduleWithFixedDelay

@Nonnull
ScheduledFuture<?> scheduleWithFixedDelay(@Nonnull
 Runnable command,
 long initialDelay,
 long delay,
 @Nonnull
 TimeUnit unit)

Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given delay between the termination of one execution and the commencement of the next. If any execution of the task encounters an exception, subsequent executions are suppressed. Otherwise, the task will only terminate via cancellation or termination of the executor.

Specified by:

scheduleWithFixedDelay in interface ScheduledExecutorService

Parameters:

command - the task to execute

initialDelay - the time to delay first execution

delay - the delay between the termination of one execution and the commencement of the next

unit - the time unit of the initialDelay and delay parameters

Returns:

a ScheduledFuture representing pending completion of the task, and whose get() method will throw an exception upon cancellation

Throws:

RejectedExecutionException - if the task cannot be scheduled for execution

NullPointerException - if command is null

IllegalArgumentException - if delay less than or equal to zero