線程池:

import java.util.linkedlist;

public abstract class manager {

private string mthreadpoolname = null;

private int mthreadpoolmaxsize = 1;

private linkedlist workers = new linkedlist();

public manager() {

}

public manager(string name, int poolmaxsize) {

mthreadpoolname = name;

createworker(name, poolmaxsize);

mthreadpoolmaxsize = poolmaxsize;

}

private void createworker(int poolmaxsize) {

for (int i = 0; i < poolmaxsize; i++) {

worker worker = new worker(this);

workers.addlast(worker);

}

}

public synchronized worker getidleworker() {

return (worker)workers.removefirst();

}

public synchronized void notifyfree(worker worker) {

if (workers.size() < mthreadpoolmaxsize) {

workers.addlast(worker);

} else {

worker = null;

}

}

public int getthreadpoolmaxsize() {

return mthreadpoolmaxsize;

}

public void setthreadpoolmaxsize(int threadpoolmaxsize) {

this.mthreadpoolmaxsize = threadpoolmaxsize;

}

}

線程抽象類:

public abstract class worker implements runnable {

private manager mmanager = null;

private thread mthread = null;

public worker() {

}

public worker(string threadname, manager manager) {

mmanager = manager;

mthread = new thread(this, threadname);

init();

mthread.start();

}

public abstract void init();

public void run() {

while (true) {

waitforstart();

worker worker = mmanager.getidleworker();

process();

isrunning = false;

mmanager.notifyfree(worker);

}

}

public abstract void process();

public void start() {

isrunning = true;

mmanager.getidleworker();

notifytostart();

}

public synchronized void waitforstart() {

try {

wait();

} catch (interruptedexception ex) {

}

}

public synchronized void notifytostart() {

notify();

}

}

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2009-06-16 14:44

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