[英]Run only one thread with ThreadPoolExecutor()
我使用ThreadPoolExecutor()为我的应用程序运行多个线程。 我想用单线程进行测试,因此在这种情况下我将nb_threads设置为1。 但是我不确定这是正确的,所以您能帮我只走一条线吗?
这是我的代码部分:
private ThreadPoolExecutor executor = null;
public static int NB_THREADS_MAX = 8;
public void submit(Runnable inRunnable) {
if (executor == null) {
/*Choice exactly the number of threads that relates the number of available processors*/
nb_threads = NB_THREADS_MAX < (tmp = Runtime.getRuntime().availableProcessors())
? NB_THREADS_MAX
: tmp;
executor = new ThreadPoolExecutor(nb_threads, nb_threads, 0, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>()); /*In this case, the pool size is fixed*/
}
executor.submit(inRunnable);
}
您为什么不利用工厂类来公开几种方便的方法?
例如:
您可以执行一个单线程线程池:
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
ExecutorService executorService = Executors.newSingleThreadExecutor();
如果您检查newSingleThreadExecutor
源代码,则会找到此代码
public static ExecutorService newSingleThreadExecutor() {
return new FinalizableDelegatedExecutorService
(new ThreadPoolExecutor(1, 1,
0L, TimeUnit.MILLISECONDS,
new LinkedBlockingQueue<Runnable>()));
}
要添加具有可用处理器的固定池,可以执行以下操作:
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
ExecutorService executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
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