18 thread pool, threads secure queue, thread creation

Reference: http://blog.csdn.net/madun/article/details/20313269

Create a thread pool

Executorservice  service= Executors.newfixedthreadpool (nthreads);

Commit Thread:

// TODO  has a return status of processing            service.submit (new loaddatathread (Startdocid, Enddocid, Lucenefiledir,  the. Queue,this. docs));

Thread-Safe queues:

linkedblockingqueue<document> queue=New linkedblockingqueue<document> (this. NumDocs );

Blockingqueue, as the name implies, "Blocking queue": A queue that can provide blocking functionality.
First, look at the common methods that Blockingqueue provides:

The Add (e) Remove () Element () method does not block the thread. The illegalstateexception exception is thrown when the constraint is not met. For example: When the queue is filled with elements, then add (e) is called, and an exception is thrown. Offer (e) the poll () Peek () method does not block the thread and does not throw an exception. For example: When the queue is filled with an element and then call offer (e), the element is not inserted and the function returns FALSE. To implement blocking, you need to call the put (e) Take () method. When a constraint is not met, the thread is blocked.

Thread creation:

/***/Publicclassimplements Runnable

18 thread pool, threads secure queue, thread creation