tomboxfan

yield() : Give a hint to the thread scheduling mechanism that, you’ve done enough and some other thread might as well have the CPU. And this is really a hint --- there is no guarantee that your implem...

/**  * A standard implementation for Delayed interface   *  * A Delayed instance means something which has a time attribute. Generally means a thread       * will start up this time later.  *  ...

Key point :   1) 1 task is composed of several portion.   2) every portion finished, the portion will call latch.countDown()   3) Threads depending on this task will call latch.await()   4) la...

1) supply special resources.   This resource can be only used by one special thread.   2) permit held up resources can be required by other threads.   threads manager should be able to signal ...

3 implementations: LinkedBlockingQueue, ArrayBlockingQueue, SynchronousQueue,     About threading communication, use wait()/notify()/notifyAll() is really quite low level. And it's error-prone, an...

//: concurrency/waxomatic2/WaxOMatic2.java // Using Lock and Condition objects. package concurrency.waxomatic2;   import static java.lang.System.out; import java.util.concurrent.ExecutorService; ...

Very important paragraph on how the CountDownLatch works. CountDownLatch is a flexible latch implementation that can be used in any of these situations; it allows one or more threads to wait for a se...

 a thread can be really interrupted by aThread.interrupt() only under 1 situation -- in blocked status wrapped with catch(InterruptedException e) {...}. Precisely,    a) aThread.sleep();  b) aObje...

In Java 5, Thread.interrupt() is not encouraged. Instead, you are encouraged to use <1st way> aExecutorService.shutdownnow(); <2nd way> aFuture<?>.cancel(true); For the 1st way...

1) Each thread has a boolean interrupted status.   2) 3 interrupt related methods defined in Thread class   public class Thread {     public void interrupt() {...} // interrupts the target threa...

ExecutorService exec = Executors.newCachedThreadPool(); for(int i = 0; i < 10; i++) {     exec.execute(new Entrance(i));//obviously Entrance is another class which implements Runnable } TimeUn...

ThreadLocal usage – from Javadoc This class provides thread-local variables. These variables differ from their normal counterparts in that each thread that accesses one (via its get or set method) ha...

Timer typical usage   new Timer().schedule(new TimerTask() {     public void run() {        System.err.println("Aborting");         System.exit(0);     }//end of run   }, 5000); //Terminate afte...

Executor can return Executor, ExecutorService, and ScheduledExecutorService. This is very, very usful Tiger new timer.   scheduler.scheduleAtFixedRate(new TimePrinter(System.out), 0, 10, SECONDS)...

Executor is used to arrange thread execution. Basicly speaking, just manage, how many threads are permited to run together.   ExecutorService obj = Executors.newSingleThreadExecutor( ) -- only 1 Execu...

The important thing need to look at is, use multiple threads(Callable), let them run together, and retrieve results from them. package com.oreilly.tiger.ch10; import java.math.BigInteger; import java....

1) wait(), notify() 方法被调用的时候，只要外面没有被synchronized()罩住，编译可过，但是跑起来一定发生异常--- current thread not owner   2) wait(), notify()的ref1一定要和synchronized(ref2)一致！两个ref必须是同一个东西，否则报错。 3) 处于wait()状态的Thread&nb...

java.util.concurrent.CyclicBarrier A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fix...