thread-pool.md

线程池原理与实现

使用

ExecutorService service = Executors.newCachedThreadPool();
service.execute(new Runnable() {
    @Override
    public void run() {

    }
});

Future<Integer> result = service.submit(new Callable<Integer>() {

    @Override
    public Integer call() throws Exception {
        return 1;
    }
});

以newCachedThreadPool()为例

所以问题的关键是ThreadPoolExecutor

ThreadPoolExecutor

默认的饱和策略是AbortPolicy

基本的任务排队方法有三种

1. 无界队列
2. 有界队列
3. 同步移交

扩展ThreadPoolExecutor

1. beforeExecute
2. afterExecute
3. terminated