Java Doc for ThreadPool.java in  » Net » snmp4j » org » snmp4j » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » snmp4j » org.snmp4j.util   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.snmp4j.util.ThreadPool ThreadPool public class ThreadPool implements WorkerPool(Code) The ThreadPool provides a pool of a fixed number of threads that are capable to execute tasks that implement the Runnable interface concurrently. The ThreadPool blocks when all threads are busy with tasks and an additional task is added. author:    Frank Fock version:    1.6 since:    1.0.2 Inner Class :class TaskManager extends Thread Field Summary protected  String name      protected  boolean respawnThreads      protected volatile  boolean stop      protected  Vector taskManagers      Constructor Summary protected   ThreadPool()      Method Summary public synchronized  void cancel()      Cancels all threads non-blocking by interrupting them. public static  ThreadPool create(String name, int size)      Creates a thread pool with the supplied name and size. Parameters:   name - the name prefix for the threads in this pool. Parameters:   size - the number of threads in this pool. public synchronized  void execute(WorkerTask task)      Executes a task on behalf of this thread pool. public  String getName()      Returns the name of the thread pool. protected  String getTaskManagerName(String prefix, int index)      public synchronized  void interrupt()      Interrupts all threads in the pool. public synchronized  boolean isIdle()      Checks if all threads of the pool are idle. public  boolean isRespawnThreads()      Tests if the threads are respawn (recreates) when they have been stopped or canceled. public  void setRespawnThreads(boolean respawnThreads)      Specifies whether threads are respawned by this thread pool after they have been stopped or not. protected  void setup(String name, int size)      public  void stop()      Stops all threads in this thread pool gracefully. public synchronized  boolean tryToExecute(WorkerTask task)      Tries to execute a task on behalf of this thread pool. Field Detail name protected String name(Code) respawnThreads protected boolean respawnThreads(Code) stop protected volatile boolean stop(Code) taskManagers protected Vector taskManagers(Code) Constructor Detail ThreadPool protected ThreadPool()(Code) Method Detail cancel public synchronized void cancel()(Code) Cancels all threads non-blocking by interrupting them. create public static ThreadPool create(String name, int size)(Code) Creates a thread pool with the supplied name and size. Parameters:   name - the name prefix for the threads in this pool. Parameters:   size - the number of threads in this pool. This number also specifies thenumber of concurrent tasks that can be executed with this pool.a ThreadPool instance. execute public synchronized void execute(WorkerTask task)(Code) Executes a task on behalf of this thread pool. If all threads are currently busy, this method call blocks until a thread gets idle again which is when the call returns immediately. Parameters:   task - a Runnable to execute. getName public String getName()(Code) Returns the name of the thread pool. the name of this thread pool. getTaskManagerName protected String getTaskManagerName(String prefix, int index)(Code) interrupt public synchronized void interrupt()(Code) Interrupts all threads in the pool. since:    1.6 isIdle public synchronized boolean isIdle()(Code) Checks if all threads of the pool are idle. true if all threads are idle. since:    1.6 isRespawnThreads public boolean isRespawnThreads()(Code) Tests if the threads are respawn (recreates) when they have been stopped or canceled. true if threads are respawn. setRespawnThreads public void setRespawnThreads(boolean respawnThreads)(Code) Specifies whether threads are respawned by this thread pool after they have been stopped or not. Default is no respawning. Parameters:   respawnThreads - if true then threads will be respawn. setup protected void setup(String name, int size)(Code) stop public void stop()(Code) Stops all threads in this thread pool gracefully. This method will not return until all threads have been terminated and joined successfully. tryToExecute public synchronized boolean tryToExecute(WorkerTask task)(Code) Tries to execute a task on behalf of this thread pool. If all threads are currently busy, this method returns false. Otherwise the task is executed in background. Parameters:   task - a Runnable to execute.true if the task is executing. since:    1.6 Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)