org.apache.cassandra.concurrent

Class SEPExecutor

java.lang.Object

org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService

org.apache.cassandra.concurrent.SEPExecutor

All Implemented Interfaces:

java.util.concurrent.Executor, java.util.concurrent.ExecutorService, LocalAwareExecutorService, ResizableThreadPool, SEPExecutorMBean

public class SEPExecutor
extends AbstractLocalAwareExecutorService
implements SEPExecutorMBean

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SEPExecutor.TakeTaskPermitResult

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

LocalAwareExecutorService.MaximumPoolSizeListener

Field Summary

Fields

Modifier and Type	Field and Description
ThreadPoolMetrics	metrics
java.lang.String	name
protected java.util.concurrent.ConcurrentLinkedQueue<org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService.FutureTask<?>>	tasks

Method Summary

Modifier and Type	Method and Description
protected void	addTask(org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService.FutureTask<?> task)
boolean	awaitTermination(long timeout, java.util.concurrent.TimeUnit unit)
int	getActiveTaskCount() Returns the approximate number of threads that are actively executing tasks.
long	getCompletedTaskCount() Returns the approximate total number of tasks that have completed execution.
int	getCorePoolSize() Returns maximum pool size of thread pool.
int	getMaximumPoolSize() Returns maximum pool size of thread pool.
int	getMaxTasksQueued()
int	getPendingTaskCount() Returns the approximate total of tasks waiting to be executed.
boolean	isShutdown()
boolean	isTerminated()
void	maybeExecuteImmediately(java.lang.Runnable command)
protected void	onCompletion()
void	setCorePoolSize(int newCorePoolSize) Allows user to resize maximum size of the thread pool.
void	setMaximumPoolSize(int newMaximumPoolSize) Allows user to resize maximum size of the thread pool.
void	shutdown()
java.util.List<java.lang.Runnable>	shutdownNow()

Methods inherited from class org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService

execute, execute, invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor, newTaskFor, submit, submit, submit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

name

public final java.lang.String name

metrics

public final ThreadPoolMetrics metrics

tasks

protected final java.util.concurrent.ConcurrentLinkedQueue<org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService.FutureTask<?>> tasks

Method Detail

onCompletion

protected void onCompletion()

Specified by:

onCompletion in class AbstractLocalAwareExecutorService

getMaxTasksQueued

public int getMaxTasksQueued()

Specified by:

getMaxTasksQueued in interface LocalAwareExecutorService

addTask

protected void addTask(org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService.FutureTask<?> task)

Specified by:

addTask in class AbstractLocalAwareExecutorService

maybeExecuteImmediately

public void maybeExecuteImmediately(java.lang.Runnable command)

Specified by:

maybeExecuteImmediately in interface LocalAwareExecutorService

shutdown

public void shutdown()

Specified by:

shutdown in interface java.util.concurrent.ExecutorService

shutdownNow

public java.util.List<java.lang.Runnable> shutdownNow()

Specified by:

shutdownNow in interface java.util.concurrent.ExecutorService

isShutdown

public boolean isShutdown()

Specified by:

isShutdown in interface java.util.concurrent.ExecutorService

isTerminated

public boolean isTerminated()

Specified by:

isTerminated in interface java.util.concurrent.ExecutorService

awaitTermination

public boolean awaitTermination(long timeout,
                                java.util.concurrent.TimeUnit unit)
                         throws java.lang.InterruptedException

Specified by:

awaitTermination in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

getPendingTaskCount

public int getPendingTaskCount()

Description copied from interface: LocalAwareExecutorService

Returns the approximate total of tasks waiting to be executed. Because the states of tasks and threads may change dynamically during computation, the returned value is only an approximation, but one that does not ever decrease across successive calls.

Specified by:

getPendingTaskCount in interface LocalAwareExecutorService

Returns:

the number of tasks

getCompletedTaskCount

public long getCompletedTaskCount()

Description copied from interface: LocalAwareExecutorService

Returns the approximate total number of tasks that have completed execution. Because the states of tasks and threads may change dynamically during computation, the returned value is only an approximation, but one that does not ever decrease across successive calls.

Specified by:

getCompletedTaskCount in interface LocalAwareExecutorService

Returns:

the number of tasks

getActiveTaskCount

public int getActiveTaskCount()

Description copied from interface: LocalAwareExecutorService

Returns the approximate number of threads that are actively executing tasks.

Specified by:

getActiveTaskCount in interface LocalAwareExecutorService

Returns:

the number of threads

getCorePoolSize

public int getCorePoolSize()

Description copied from interface: ResizableThreadPool

Returns maximum pool size of thread pool.

Specified by:

getCorePoolSize in interface ResizableThreadPool

setCorePoolSize

public void setCorePoolSize(int newCorePoolSize)

Description copied from interface: ResizableThreadPool

Allows user to resize maximum size of the thread pool.

Specified by:

setCorePoolSize in interface ResizableThreadPool

getMaximumPoolSize

public int getMaximumPoolSize()

Description copied from interface: ResizableThreadPool

Returns maximum pool size of thread pool.

Specified by:

getMaximumPoolSize in interface ResizableThreadPool

setMaximumPoolSize

public void setMaximumPoolSize(int newMaximumPoolSize)

Description copied from interface: ResizableThreadPool

Allows user to resize maximum size of the thread pool.

Specified by:

setMaximumPoolSize in interface ResizableThreadPool