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tomcat8的后台线程     所属分类 tomcat 浏览量 165
嵌入式启动

 tomcat8 嵌入式 servlet 实例 

dyyx.Main at localhost:50351    
    Thread [main] (Running) 
    Daemon Thread [NioBlockingSelector.BlockPoller-1] (Running) 
    Daemon Thread [ContainerBackgroundProcessor[StandardEngine[Tomcat]]] (Running)  
    Daemon Thread [http-nio-8086-ClientPoller-0] (Running)  
    Daemon Thread [http-nio-8086-ClientPoller-1] (Running)  
    Daemon Thread [http-nio-8086-Acceptor-0] (Running)  
    Daemon Thread [http-nio-8086-AsyncTimeout] (Running)    
    Daemon Thread [http-nio-8086-exec-1] (Running)  
    Daemon Thread [http-nio-8086-exec-2] (Running)  
    Daemon Thread [http-nio-8086-exec-3] (Running)  
    

ContainerBackgroundProcessor线程 Private thread class to invoke the backgroundProcess method of this container and its children after a fixed delay. BlockPoller 处理阻塞的读写操作 Daemon Thread [http-nio-8086-exec-N] 工作线程 Acceptor accept线程 接受新连接 ClientPoller IO读写线程 The background thread that adds sockets to the Poller, checks the poller for triggered events and hands the associated socket off to an appropriate processor as events occur. AsyncTimeout The background thread that checks async requests and fires the timeout if there has been no activity.
Daemon Thread [NioBlockingSelector.BlockPoller-1] (Running) org.apache.tomcat.util.net.NioBlockingSelector.BlockPoller public void open(Selector selector) { sharedSelector = selector; poller = new BlockPoller(); poller.selector = sharedSelector; poller.setDaemon(true); poller.setName("NioBlockingSelector.BlockPoller-"+(++threadCounter)); poller.start(); } Daemon Thread [ContainerBackgroundProcessor[StandardEngine[Tomcat]]] (Running) org.apache.catalina.core.ContainerBase.threadStart() String threadName = "ContainerBackgroundProcessor[" + toString() + "]"; thread = new Thread(new ContainerBackgroundProcessor(), threadName); thread.setDaemon(true); thread.start(); Daemon Thread [http-nio-8086-ClientPoller-0] (Running) NioEndpoint.startInternal() // Start poller threads pollers = new Poller[getPollerThreadCount()]; for (int i=0; i < pollers.length; i++) { pollers[i] = new Poller(); Thread pollerThread = new Thread(pollers[i], getName() + "-ClientPoller-"+i); pollerThread.setPriority(threadPriority); pollerThread.setDaemon(true); pollerThread.start(); } Daemon Thread [http-nio-8086-Acceptor-0] (Running) org.apache.tomcat.util.net.Nio2Endpoint.Acceptor org.apache.tomcat.util.net.AbstractEndpoint.startAcceptorThreads() protected final void startAcceptorThreads() { int count = getAcceptorThreadCount(); acceptors = new Acceptor[count]; for (int i = 0; i < count; i++) { acceptors[i] = createAcceptor(); String threadName = getName() + "-Acceptor-" + i; acceptors[i].setThreadName(threadName); Thread t = new Thread(acceptors[i], threadName); t.setPriority(getAcceptorThreadPriority()); t.setDaemon(getDaemon()); t.start(); } } Daemon Thread [http-nio-8086-AsyncTimeout] (Running) org.apache.coyote.AbstractProtocol.AsyncTimeout<S> org.apache.coyote.AbstractProtocol.start() asyncTimeout = new AsyncTimeout(); Thread timeoutThread = new Thread(asyncTimeout, getNameInternal() + "-AsyncTimeout"); timeoutThread.setPriority(endpoint.getThreadPriority()); timeoutThread.setDaemon(true); timeoutThread.start(); Daemon Thread [http-nio-8086-exec-2] (Suspended (breakpoint at line 20 in HelloServlet)) owns: NioChannel (id=69) HelloServlet.doPost(HttpServletRequest, HttpServletResponse) line: 20 HelloServlet.doGet(HttpServletRequest, HttpServletResponse) line: 15 HelloServlet(HttpServlet).service(HttpServletRequest, HttpServletResponse) line: 622 HelloServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 729 ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 230 ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 165 StandardWrapperValve.invoke(Request, Response) line: 198 StandardContextValve.invoke(Request, Response) line: 108 NonLoginAuthenticator(AuthenticatorBase).invoke(Request, Response) line: 522 StandardHostValve.invoke(Request, Response) line: 140 ErrorReportValve.invoke(Request, Response) line: 79 StandardEngineValve.invoke(Request, Response) line: 87 CoyoteAdapter.service(Request, Response) line: 343 Http11Processor.service(SocketWrapperBase<?>) line: 1096 Http11Processor(AbstractProcessorLight).process(SocketWrapperBase<?>, SocketEvent) line: 66 AbstractProtocol$ConnectionHandler<S>.process(SocketWrapperBase<S>, SocketEvent) line: 760 NioEndpoint$SocketProcessor.run() line: 1480 ThreadPoolExecutor(ThreadPoolExecutor).runWorker(ThreadPoolExecutor$Worker) line: 1142 ThreadPoolExecutor$Worker.run() line: 617 TaskThread$WrappingRunnable.run() line: 61 工作线程池 org.apache.tomcat.util.threads.ThreadPoolExecutor org.apache.tomcat.util.net.AbstractEndpoint.createExecutor() public void createExecutor() { internalExecutor = true; TaskQueue taskqueue = new TaskQueue(); TaskThreadFactory tf = new TaskThreadFactory(getName() + "-exec-", daemon, getThreadPriority()); executor = new ThreadPoolExecutor(getMinSpareThreads(), getMaxThreads(), 60, TimeUnit.SECONDS,taskqueue, tf); taskqueue.setParent( (ThreadPoolExecutor) executor); }

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