程序包 java.util.concurrent

类 ForkJoinWorkerThread

java.lang.Object

java.lang.Thread

java.util.concurrent.ForkJoinWorkerThread

所有已实现的接口:

Runnable

public class ForkJoinWorkerThread
extends Thread

A thread managed by a ForkJoinPool, which executes ForkJoinTasks. This class is subclassable solely for the sake of adding functionality -- there are no overridable methods dealing with scheduling or execution. However, you can override initialization and termination methods surrounding the main task processing loop. If you do create such a subclass, you will also need to supply a custom ForkJoinPool.ForkJoinWorkerThreadFactory to ForkJoinPool#ForkJoinPool in a ForkJoinPool.

从以下版本开始:

1.7

嵌套类概要

从类继承的嵌套类/接口 java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

字段概要

从类继承的字段 java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

构造器概要

构造器

限定符	构造器	说明
protected	ForkJoinWorkerThread(ForkJoinPool pool)	Creates a ForkJoinWorkerThread operating in the given pool.

方法概要

限定符和类型	方法	说明
ForkJoinPool	getPool()	Returns the pool hosting this thread.
int	getPoolIndex()	Returns the unique index number of this thread in its pool.
protected void	onStart()	Initializes internal state after construction but before processing any tasks.
protected void	onTermination(Throwable exception)	Performs cleanup associated with termination of this worker thread.
void	run()	This method is required to be public, but should never be called explicitly.

从类继承的方法 java.lang.Object

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

从类继承的方法 java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

构造器详细资料

ForkJoinWorkerThread

protected ForkJoinWorkerThread(ForkJoinPool pool)

Creates a ForkJoinWorkerThread operating in the given pool.

参数:

pool - the pool this thread works in

抛出:

NullPointerException - if pool is null

方法详细资料

getPool

public ForkJoinPool getPool()

Returns the pool hosting this thread.

返回:

the pool

getPoolIndex

public int getPoolIndex()

Returns the unique index number of this thread in its pool. The returned value ranges from zero to the maximum number of threads (minus one) that may exist in the pool, and does not change during the lifetime of the thread. This method may be useful for applications that track status or collect results per-worker-thread rather than per-task.

返回:

the index number

onStart

protected void onStart()

Initializes internal state after construction but before processing any tasks. If you override this method, you must invoke super.onStart() at the beginning of the method. Initialization requires care: Most fields must have legal default values, to ensure that attempted accesses from other threads work correctly even before this thread starts processing tasks.

onTermination

protected void onTermination(Throwable exception)

Performs cleanup associated with termination of this worker thread. If you override this method, you must invoke super.onTermination at the end of the overridden method.

参数:

exception - the exception causing this thread to abort due to an unrecoverable error, or null if completed normally

run

public void run()

This method is required to be public, but should never be called explicitly. It performs the main run loop to execute ForkJoinTasks.

指定者:

run 在接口中 Runnable

覆盖:

run 在类中 Thread

另请参阅:

Thread.start(), Thread.stop(), Thread(ThreadGroup, Runnable, String)