Tomcat的ThreadLocalLeakPreventionListener工作原理

当context stop的时候，如果thread pool的thread没有正常停止的话，而且ThreadLocal中引用了webclassloader加载的对象，有很有可能造成内存泄露，一个解决办法就是杀掉所有的threadpool的线程。Tomcat的ThreadLocalLeakPreventionListener就是这样一个原理 Engine engine = (Engine) context.getParent().getParent();

        Service service = engine.getService();
        Connector[] connectors = service.findConnectors();
        if (connectors != null) {
            for (Connector connector : connectors) {
                ProtocolHandler handler = connector.getProtocolHandler();
                Executor executor = null;
                if (handler != null) {
                    executor = handler.getExecutor();
                }

                if (executor instanceof ThreadPoolExecutor) {
                    ThreadPoolExecutor threadPoolExecutor =
                        (ThreadPoolExecutor) executor;
                    threadPoolExecutor.contextStopping();
                } else if (executor instanceof StandardThreadExecutor) {
                    StandardThreadExecutor stdThreadExecutor =
                        (StandardThreadExecutor) executor;
                    stdThreadExecutor.contextStopping();
                }

            }
        }
    }

 

评论

1 楼 wendellup_account1 2013-04-28  

学习了。貌似只有tomcat7中才有这个类。。