org.apache.cassandra.concurrent

Interface SequentialExecutorPlus

All Superinterfaces:

java.util.concurrent.Executor, ExecutorPlus, java.util.concurrent.ExecutorService, ResizableThreadPool

All Known Subinterfaces:

LocalAwareSequentialExecutorPlus

All Known Implementing Classes:

LocalAwareSingleThreadExecutorPlus, SingleThreadExecutorPlus

public interface SequentialExecutorPlus
extends ExecutorPlus

An ExecutorPlus that guarantees the order of execution matches the order of task submission, and provides a simple mechanism for the recurring pattern of ensuring a job is executed at least once after some point in time (i.e. ensures that at most one copy of the task is queued, with up to one copy running as well)

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	SequentialExecutorPlus.AtLeastOnceTrigger

Nested classes/interfaces inherited from interface org.apache.cassandra.concurrent.ExecutorPlus

ExecutorPlus.MaximumPoolSizeListener

Method Summary

Modifier and Type	Method and Description
SequentialExecutorPlus.AtLeastOnceTrigger	atLeastOnceTrigger(java.lang.Runnable runnable) Return an object for orchestrating the execution of this task at least once (in its entirety) after the trigger is invoked, i.e.

Methods inherited from interface org.apache.cassandra.concurrent.ExecutorPlus

execute, inExecutor, invokeAll, invokeAll, invokeAny, invokeAny, maybeExecuteImmediately, submit, submit, submit, submit, submit, submit

Methods inherited from interface java.util.concurrent.ExecutorService

awaitTermination, isShutdown, isTerminated, shutdown, shutdownNow

Methods inherited from interface java.util.concurrent.Executor

execute

Methods inherited from interface org.apache.cassandra.concurrent.ResizableThreadPool

getActiveTaskCount, getCompletedTaskCount, getCorePoolSize, getMaximumPoolSize, getMaxTasksQueued, getPendingTaskCount, setCorePoolSize, setMaximumPoolSize

Method Detail

atLeastOnceTrigger

SequentialExecutorPlus.AtLeastOnceTrigger atLeastOnceTrigger(java.lang.Runnable runnable)

Return an object for orchestrating the execution of this task at least once (in its entirety) after the trigger is invoked, i.e. saturating the number of pending tasks at 1 (2 including any possibly executing at the time of invocation)