org.gridgain.grid.thread

Class GridThreadPoolExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

org.gridgain.grid.thread.GridThreadPoolExecutor

All Implemented Interfaces:

Executor, ExecutorService

public class GridThreadPoolExecutor
extends ThreadPoolExecutor

An ExecutorService that executes submitted tasks using pooled grid threads.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

Field Summary

Fields

Modifier and Type	Field and Description
static int	DFLT_CORE_POOL_SIZE Default core pool size (value is 100).

Constructor Summary

Constructors

Constructor and Description
GridThreadPoolExecutor() Creates a new service with default initial parameters.
GridThreadPoolExecutor(int corePoolSize, int maxPoolSize, long keepAliveTime, BlockingQueue<Runnable> workQueue) Creates a new service with the given initial parameters.
GridThreadPoolExecutor(int corePoolSize, int maxPoolSize, long keepAliveTime, BlockingQueue<Runnable> workQ, RejectedExecutionHandler hnd) Creates a new service with the given initial parameters.
GridThreadPoolExecutor(int corePoolSize, int maxPoolSize, long keepAliveTime, BlockingQueue<Runnable> workQ, ThreadFactory threadFactory, RejectedExecutionHandler hnd) Creates a new service with the given initial parameters.
GridThreadPoolExecutor(String gridName) Creates a new service with default initial parameters.
GridThreadPoolExecutor(String gridName, int corePoolSize, int maxPoolSize, long keepAliveTime, BlockingQueue<Runnable> workQ) Creates a new service with the given initial parameters.
GridThreadPoolExecutor(String gridName, int corePoolSize, int maxPoolSize, long keepAliveTime, BlockingQueue<Runnable> workQ, RejectedExecutionHandler hnd) Creates a new service with the given initial parameters.

Method Summary

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

afterExecute, allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, beforeExecute, execute, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated, toString

Methods inherited from class java.util.concurrent.AbstractExecutorService

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

Methods inherited from class java.lang.Object

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

Field Detail

DFLT_CORE_POOL_SIZE

public static final int DFLT_CORE_POOL_SIZE

Default core pool size (value is 100).

See Also:

Constant Field Values

Constructor Detail

GridThreadPoolExecutor

public GridThreadPoolExecutor()

Creates a new service with default initial parameters. Default values are:

Name	Default Value
Core Pool Size	100 (see DFLT_CORE_POOL_SIZE).
Maximum Pool Size	None, is it is not used for unbounded queues.
Keep alive time	No limit (see Long.MAX_VALUE).
Blocking Queue (see BlockingQueue).	Unbounded linked blocking queue (see LinkedBlockingDeque).

GridThreadPoolExecutor

public GridThreadPoolExecutor(int corePoolSize,
                      int maxPoolSize,
                      long keepAliveTime,
                      BlockingQueue<Runnable> workQueue)

Creates a new service with the given initial parameters.

Parameters:

corePoolSize - The number of threads to keep in the pool, even if they are idle.

maxPoolSize - The maximum number of threads to allow in the pool.

keepAliveTime - When the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.

workQueue - The queue to use for holding tasks before they are executed. This queue will hold only runnable tasks submitted by the ThreadPoolExecutor.execute(Runnable) method.

GridThreadPoolExecutor

public GridThreadPoolExecutor(int corePoolSize,
                      int maxPoolSize,
                      long keepAliveTime,
                      BlockingQueue<Runnable> workQ,
                      RejectedExecutionHandler hnd)

Creates a new service with the given initial parameters.

Parameters:

corePoolSize - The number of threads to keep in the pool, even if they are idle.

maxPoolSize - The maximum number of threads to allow in the pool.

keepAliveTime - When the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.

workQ - The queue to use for holding tasks before they are executed. This queue will hold only the runnable tasks submitted by the ThreadPoolExecutor.execute(Runnable) method.

hnd - Optional handler to use when execution is blocked because the thread bounds and queue capacities are reached. If null then AbortPolicy handler is used by default.

GridThreadPoolExecutor

public GridThreadPoolExecutor(String gridName)

Creates a new service with default initial parameters. Default values are:

Name	Default Value
Core Pool Size	100 (see DFLT_CORE_POOL_SIZE).
Maximum Pool Size	None, is it is not used for unbounded queues.
Keep alive time	No limit (see Long.MAX_VALUE).
Blocking Queue (see BlockingQueue).	Unbounded linked blocking queue (see LinkedBlockingDeque).

Parameters:

gridName - Name of the grid.

GridThreadPoolExecutor

public GridThreadPoolExecutor(String gridName,
                      int corePoolSize,
                      int maxPoolSize,
                      long keepAliveTime,
                      BlockingQueue<Runnable> workQ)

Creates a new service with the given initial parameters.

Parameters:

gridName - Name of the grid

corePoolSize - The number of threads to keep in the pool, even if they are idle.

maxPoolSize - The maximum number of threads to allow in the pool.

keepAliveTime - When the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.

workQ - The queue to use for holding tasks before they are executed. This queue will hold only runnable tasks submitted by the ThreadPoolExecutor.execute(Runnable) method.

GridThreadPoolExecutor

public GridThreadPoolExecutor(String gridName,
                      int corePoolSize,
                      int maxPoolSize,
                      long keepAliveTime,
                      BlockingQueue<Runnable> workQ,
                      RejectedExecutionHandler hnd)

Creates a new service with the given initial parameters.

Parameters:

gridName - Name of the grid.

corePoolSize - The number of threads to keep in the pool, even if they are idle.

maxPoolSize - The maximum number of threads to allow in the pool.

keepAliveTime - When the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.

workQ - The queue to use for holding tasks before they are executed. This queue will hold only the runnable tasks submitted by the ThreadPoolExecutor.execute(Runnable) method.

hnd - Optional handler to use when execution is blocked because the thread bounds and queue capacities are reached. If null then AbortPolicy handler is used by default.

GridThreadPoolExecutor

public GridThreadPoolExecutor(int corePoolSize,
                      int maxPoolSize,
                      long keepAliveTime,
                      BlockingQueue<Runnable> workQ,
                      ThreadFactory threadFactory,
                      @Nullable
                      RejectedExecutionHandler hnd)

Creates a new service with the given initial parameters.

Parameters:

corePoolSize - The number of threads to keep in the pool, even if they are idle.

maxPoolSize - The maximum number of threads to allow in the pool.

keepAliveTime - When the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.

workQ - The queue to use for holding tasks before they are executed. This queue will hold only the runnable tasks submitted by the ThreadPoolExecutor.execute(Runnable) method.

threadFactory - Thread factory.

hnd - Optional handler to use when execution is blocked because the thread bounds and queue capacities are reached. If null then AbortPolicy handler is used by default.