- All Implemented Interfaces:
- Direct Known Subclasses:
public class ForkJoinWorkerThread extends java.lang.ThreadA 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.ForkJoinWorkerThreadFactoryto use it in a
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
getPool()Returns the pool hosting this thread.
getPoolIndex()Returns the index number of this thread in its pool.
onStart()Initializes internal state after construction but before processing any tasks.
onTermination(java.lang.Throwable exception)Performs cleanup associated with termination of this worker thread.
run()This method is required to be public, but should never be called explicitly.
Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield
protected ForkJoinWorkerThread(ForkJoinPool pool)Creates a ForkJoinWorkerThread operating in the given pool.
pool- the pool this thread works in
java.lang.NullPointerException- if pool is null
public ForkJoinPool getPool()Returns the pool hosting this thread.
- the pool
public int getPoolIndex()Returns the index number of this thread in its pool. The returned value ranges from zero to the maximum number of threads (minus one) that have ever been created in the pool. This method may be useful for applications that track status or collect results per-worker rather than per-task.
- the index number
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.
protected void onTermination(java.lang.Throwable exception)Performs cleanup associated with termination of this worker thread. If you override this method, you must invoke
super.onTerminationat the end of the overridden method.
exception- the exception causing this thread to abort due to an unrecoverable error, or
nullif completed normally
public void run()This method is required to be public, but should never be called explicitly. It performs the main run loop to execute
- Specified by: